{"id":15390,"date":"2026-09-10T01:52:06","date_gmt":"2026-09-10T01:52:06","guid":{"rendered":"https:\/\/tenessy.com\/?p=15390"},"modified":"2026-09-10T01:52:08","modified_gmt":"2026-09-10T01:52:08","slug":"pruvodce-zahustovadly-a-stabilizatory-pro-vodou-reditelne-barvy-od-spolecnosti-hec","status":"publish","type":"post","link":"https:\/\/tenessy.com\/cs\/pruvodce-zahustovadly-a-stabilizatory-pro-vodou-reditelne-barvy-od-spolecnosti-hec\/","title":{"rendered":"HEC ve vodou \u0159editeln\u00fdch barv\u00e1ch: Pr\u016fvodce zahu\u0161\u0165ovadly a stabiliz\u00e1tory"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-1024x683.jpg\" alt=\"\" class=\"wp-image-14889\" title=\"\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-1024x683.jpg 1024w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-300x200.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-768x512.jpg 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-1536x1024.jpg 1536w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-2048x1365.jpg 2048w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/07\/HEC-Product-18x12.jpg 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>HEC<\/u><\/a>\u00a0ve vodou \u0159editeln\u00fdch barv\u00e1ch je z\u00e1kladn\u00edm zahu\u0161\u0165ovadlem v n\u00e1t\u011brov\u00e9m pr\u016fmyslu, kter\u00e9 zaji\u0161\u0165uje pseudoplastick\u00fd tok, odolnost proti st\u00e9k\u00e1n\u00ed a stabilizaci pigment\u016f \u2013 vlastnosti, kter\u00e9 latexov\u00e9 barvy vy\u017eaduj\u00ed \u2013 a to v\u0161e d\u00edky jedin\u00e9mu neiontov\u00e9mu polymeru. Tato p\u0159\u00edru\u010dka vysv\u011btluje mechanismus zahu\u0161\u0165ov\u00e1n\u00ed hydroxyethylcelul\u00f3zy, porovn\u00e1v\u00e1 jej\u00ed reologick\u00e9 vlastnosti s akrylov\u00fdmi zahu\u0161\u0165ovadly a popisuje, jak zvolit t\u0159\u00eddu viskozity a d\u00e1vkov\u00e1n\u00ed pro interi\u00e9rov\u00e9 a exteri\u00e9rov\u00e9 latexov\u00e9 barvy, kter\u00e9 spl\u0148uj\u00ed po\u017eadavky test\u016f na nan\u00e1\u0161en\u00ed \u0161t\u011btcem, vyrovn\u00e1n\u00ed povrchu a odolnost proti drhnut\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u00davod<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>Hydroxyethylcelul\u00f3za (HEC)<\/u><\/a>&nbsp;slou\u017e\u00ed k zahu\u0161\u0165ov\u00e1n\u00ed latexov\u00fdch barev ji\u017e od 60. let a z\u016fst\u00e1v\u00e1 referen\u010dn\u00edm standardem z jednoduch\u00e9ho d\u016fvodu: pln\u00ed svou funkci bez vedlej\u0161\u00edch \u00fa\u010dink\u016f. Ve vodou \u0159editeln\u00e9 barv\u011b se HEC rozpou\u0161t\u00ed ve vodn\u00e9 f\u00e1zi a vytv\u00e1\u0159\u00ed trojrozm\u011brnou polymern\u00ed s\u00ed\u0165, kter\u00e1 zvy\u0161uje viskozitu p\u0159i n\u00edzk\u00e9m smykov\u00e9m nam\u00e1h\u00e1n\u00ed, udr\u017euje pigmenty a plniva v suspenzi, zabra\u0148uje usazov\u00e1n\u00ed b\u011bhem skladov\u00e1n\u00ed, br\u00e1n\u00ed st\u00e9k\u00e1n\u00ed na svisl\u00fdch st\u011bn\u00e1ch a dod\u00e1v\u00e1 barv\u011b konzistenci, d\u00edky n\u00ed\u017e \u0161t\u011btec nebo v\u00e1le\u010dek nan\u00e1\u0161\u00ed rovnom\u011brn\u00fd mokr\u00fd film.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>Hydroxyethylcelul\u00f3za (HEC)<\/u><\/a>&nbsp;v barv\u00e1ch na vodn\u00ed b\u00e1zi je cen\u011bn pro sv\u00e9 chov\u00e1n\u00ed na molekul\u00e1rn\u00ed \u00farovni. Polymer je neiontov\u00fd, tak\u017ee jeho viskozitu t\u00e9m\u011b\u0159 neovliv\u0148uje pH, soli ani povrchov\u011b aktivn\u00ed l\u00e1tky a disperga\u010dn\u00ed \u010dinidla, kter\u00e1 jsou v latexov\u00fdch sm\u011bs\u00edch v\u017edy p\u0159\u00edtomna. Zahu\u0161\u0165uje samotnou vodnou f\u00e1zi, nikoli polymerov\u00e9 latexov\u00e9 \u010d\u00e1stice, \u010d\u00edm\u017e neovliv\u0148uje chemick\u00e9 procesy p\u0159i tvorb\u011b filmu. D\u00edky tomu je HEC nejuniverz\u00e1ln\u011bj\u0161\u00edm dostupn\u00fdm zahu\u0161\u0165ovadlem: funguje s akrylov\u00fdmi, styren-akrylov\u00fdmi, vinyl-akrylov\u00fdmi i \u010dist\u011b akrylov\u00fdmi pojivy, a to v matn\u00fdch, polomatn\u00fdch, sat\u00e9nov\u00fdch i pololeskl\u00fdch barv\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ve spole\u010dnosti TENESSY Chemical vyr\u00e1b\u00edme HEC z prvot\u0159\u00eddn\u00ed alkalick\u00e9 celul\u00f3zy z\u00edskan\u00e9 z bavlny na n\u011bmeck\u00fdch technologick\u00fdch za\u0159\u00edzen\u00edch. Na\u0161e produkty ur\u010den\u00e9 pro stavebnictv\u00ed a n\u00e1t\u011brov\u00e9 hmoty maj\u00ed viskozitu v rozmez\u00ed od 15 000 do 100 000 mPa\u00b7s (roztok 2%, Brookfield, 20 \u00b0C), p\u0159i\u010dem\u017e viskozita roztoku 1% pro n\u00e1t\u011brov\u00e9 aplikace dosahuje a\u017e 5 000\u20136 000 mPa\u00b7s. Vzhledem k tomu, \u017ee viskozita hotov\u00e9 barvy je nejd\u016fle\u017eit\u011bj\u0161\u00edm parametrem kontroly kvality v z\u00e1vod\u011b na v\u00fdrobu n\u00e1t\u011brov\u00fdch hmot, p\u0159\u00edsn\u011b kontrolujeme viskozitu produktu (obvykle \u00b110%) a poskytujeme technick\u00e9 \u00fadaje o reologii, vlhkosti a obsahu popela, aby formul\u00e1to\u0159i mohli \u0161ar\u017ei za \u0161ar\u017e\u00ed dosahovat sv\u00fdch c\u00edlov\u00fdch hodnot podle metod Stormer a Brookfield.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"403\" height=\"252\" data-id=\"15392\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/2d56139c-022b-4546-ad6f-42c2f9a875c5_\u526f\u672c.jpg\" alt=\"\" class=\"wp-image-15392\" title=\"\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/2d56139c-022b-4546-ad6f-42c2f9a875c5_\u526f\u672c.jpg 403w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/2d56139c-022b-4546-ad6f-42c2f9a875c5_\u526f\u672c-300x188.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/2d56139c-022b-4546-ad6f-42c2f9a875c5_\u526f\u672c-18x12.jpg 18w\" sizes=\"(max-width: 403px) 100vw, 403px\" \/><figcaption><\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Jak doch\u00e1z\u00ed ke zahu\u0161\u0165ov\u00e1n\u00ed HEC: mechanismus a reologie<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Mechanismus zahu\u0161\u0165ov\u00e1n\u00ed<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kdy\u017e <a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>Hydroxyethylcelul\u00f3za (HEC)<\/u><\/a>&nbsp;Jakmile se pr\u00e1\u0161ek ve vod\u011b hydratuje, polymern\u00ed \u0159et\u011bzce se roztahuj\u00ed a zab\u00edraj\u00ed velk\u00fd hydrodynamick\u00fd objem. \u0158et\u011bzce vytv\u00e1\u0159ej\u00ed vod\u00edkov\u00e9 vazby s molekulami vody a vzhledem k tomu, \u017ee jsou dlouh\u00e9 a pru\u017en\u00e9, vz\u00e1jemn\u011b se propl\u00e9taj\u00ed. V klidu tato propleten\u00ed vytv\u00e1\u0159ej\u00ed gelovitou s\u00ed\u0165 s vysokou zd\u00e1nlivou viskozitou. Tento mechanismus je \u010dist\u011b hydrodynamick\u00fd \u2013 nedoch\u00e1z\u00ed k \u017e\u00e1dn\u00e9 reakci s latexov\u00fdmi \u010d\u00e1sticemi, nen\u00ed zde \u017e\u00e1dn\u00fd spou\u0161t\u011b\u010d v podob\u011b pH ani asociace s micelami povrchov\u011b aktivn\u00edch l\u00e1tek. Proto je HEC popisov\u00e1n jako \u201czahu\u0161\u0165ovadlo ve vodn\u00e9 f\u00e1zi\u201d, na rozd\u00edl od asocia\u010dn\u00edch zahu\u0161\u0165ovadel, kter\u00e1 se v\u00e1\u017eou na povrchy latexu a pigment\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Praktick\u00fdm d\u016fsledkem je p\u0159edv\u00eddateln\u00e9 chov\u00e1n\u00ed. Jeliko\u017e se jedn\u00e1 sp\u00ed\u0161e o fyzik\u00e1ln\u00ed ne\u017e chemickou s\u00ed\u0165, dod\u00e1v\u00e1 HEC barv\u00e1m v\u00fdrazn\u011b pseudoplastickou (smykem z\u0159editelnou) reologii. P\u0159i vysok\u00e9m st\u0159ihu zp\u016fsoben\u00e9m tahy \u0161t\u011btcem nebo nan\u00e1\u0161en\u00edm v\u00e1le\u010dkem (10 000\u201340 000 s\u207b\u00b9) se propleten\u00ed rozpadaj\u00ed a viskozita kles\u00e1 na n\u00edzkou hodnotu, tak\u017ee se barva snadno rozt\u00edr\u00e1. Jakmile smykov\u00e9 nam\u00e1h\u00e1n\u00ed ustane, s\u00ed\u0165 se znovu vytvo\u0159\u00ed, viskozita se obnov\u00ed a mokr\u00fd film odol\u00e1v\u00e1 st\u00e9k\u00e1n\u00ed a kap\u00e1n\u00ed. Doba zotaven\u00ed se pohybuje v \u0159\u00e1du des\u00edtek milisekund a\u017e n\u011bkolika sekund, v z\u00e1vislosti na molekulov\u00e9 hmotnosti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pseudoplasticita a viskozitn\u00ed k\u0159ivka<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Typick\u00e1 barva zahu\u0161t\u011bn\u00e1 HEC vykazuje pokles viskozity p\u0159ibli\u017en\u011b o t\u0159i a\u017e \u010dty\u0159i \u0159\u00e1dy p\u0159i porovn\u00e1n\u00ed n\u00edzk\u00e9ho smykov\u00e9ho nam\u00e1h\u00e1n\u00ed (0,1 s\u207b\u00b9) s vysok\u00fdm smykov\u00fdm nam\u00e1h\u00e1n\u00edm (10 000 s\u207b\u00b9). P\u0159esn\u00fd tvar k\u0159ivky z\u00e1vis\u00ed na molekulov\u00e9 hmotnosti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HEC s n\u00edzkou molekulovou hmotnost\u00ed (nap\u0159. typy s viskozitou 15 000\u201330 000 mPa\u00b7s): krat\u0161\u00ed \u0159et\u011bzce, slab\u0161\u00ed s\u00ed\u0165, v\u00edce newtonovsk\u00e9 chov\u00e1n\u00ed, lep\u0161\u00ed vyrovn\u00e1n\u00ed, ni\u017e\u0161\u00ed odolnost proti st\u00e9k\u00e1n\u00ed, nutnost vy\u0161\u0161\u00edho d\u00e1vkov\u00e1n\u00ed.<\/li>\n\n\n\n<li>HEC s vysokou molekulovou hmotnost\u00ed (nap\u0159. typy s viskozitou 50 000\u2013100 000 mPa\u00b7s): dlouh\u00e9 \u0159et\u011bzce, siln\u00e9 propleten\u00ed, v\u00fdrazn\u00fd smykov\u00fd z\u0159editeln\u00fd \u00fa\u010dinek, vynikaj\u00edc\u00ed odolnost proti st\u00e9k\u00e1n\u00ed a plnost, av\u0161ak v\u011bt\u0161\u00ed odpor p\u0159i nan\u00e1\u0161en\u00ed \u0161t\u011btcem a men\u0161\u00ed vyrovn\u00e1vac\u00ed schopnost.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdrobce t\u011bchto vlastnost\u00ed dosahuje sm\u00edch\u00e1n\u00edm r\u016fzn\u00fdch typ\u016f surovin nebo \u00fapravou jejich d\u00e1vkov\u00e1n\u00ed. Typick\u00e1 interi\u00e9rov\u00e1 matn\u00e1 barva obsahuje 0,25\u20130,45% HEC (v pom\u011bru k celkov\u00e9 hmotnosti barvy v dodan\u00e9m stavu); exteri\u00e9rov\u00e1 barva s vysok\u00fdm obsahem plniva m\u016f\u017ee obsahovat 0,30\u20130,50%. C\u00edlovou hodnotou je obvykle viskozita podle Stormera (KU) v rozmez\u00ed 90\u2013110 KU a hodnota 1 000\u20132 500 mPa\u00b7s nam\u011b\u0159en\u00e1 na viskozim\u011bru Brookfield LVF p\u0159i 60 ot.\/min, v z\u00e1vislosti na typu barvy a zp\u016fsobu nan\u00e1\u0161en\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>HEC vs. akrylov\u00e1 (asociativn\u00ed) zahu\u0161\u0165ovadla<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Akrylov\u00e1 zahu\u0161\u0165ovadla \u2013 a\u0165 u\u017e se jedn\u00e1 o emulze bobtnaj\u00edc\u00ed v alkalick\u00e9m prost\u0159ed\u00ed (ASE) nebo o hydrofobn\u011b modifikovan\u00e9 emulze bobtnaj\u00edc\u00ed v alkalick\u00e9m prost\u0159ed\u00ed (HASE) \u2013 zahu\u0161\u0165uj\u00ed zcela odli\u0161n\u00fdm mechanismem. \u010c\u00e1stice ASE p\u0159i neutralizaci bobtnaj\u00ed, \u010d\u00edm\u017e se zv\u011bt\u0161uje objem disperze. HASE vytv\u00e1\u0159\u00ed hydrofobn\u00ed vazby, kter\u00e9 spojuj\u00ed \u010d\u00e1stice. Srovn\u00e1n\u00ed s HEC:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Majetek<\/strong><strong><\/strong><\/td><td><strong>HEC<\/strong><strong><\/strong><\/td><td><strong>ASE\/HASE akryl\u00e1t<\/strong><strong><\/strong><\/td><\/tr><tr><td>Lokus zodpov\u011bdn\u00fd za zhu\u0161t\u011bn\u00ed<\/td><td>Vodn\u00ed f\u00e1ze<\/td><td>Povrchy \u010d\u00e1stic \/ voda<\/td><\/tr><tr><td>citlivost na pH<\/td><td>\u017d\u00e1dn\u00e9<\/td><td>Odoln\u00e1 (vy\u017eaduje pH 8\u201310)<\/td><\/tr><tr><td>S\u016fl\/iontov\u00e1 tolerance<\/td><td>Vynikaj\u00edc\u00ed<\/td><td>M\u00edrn\u00e1<\/td><\/tr><tr><td>Sn\u00ed\u017een\u00ed viskozity p\u0159i smyku (p\u0159i stejn\u00e9m KU)<\/td><td>Vysok\u00e1<\/td><td>Ni\u017e\u0161\u00ed (HASE zaji\u0161\u0165uje strukturu se st\u0159edn\u00edm stupn\u011bm smyku)<\/td><\/tr><tr><td>Vyrovn\u00e1v\u00e1n\u00ed<\/td><td>\u00da\u010dinn\u00e9 p\u0159i n\u00edzk\u00e9m d\u00e1vkov\u00e1n\u00ed<\/td><td>Lep\u0161\u00ed v HASE<\/td><\/tr><tr><td>Odolnost proti pr\u016fv\u011bsu<\/td><td>Vynikaj\u00edc\u00ed<\/td><td>M\u00edrn\u00e1<\/td><\/tr><tr><td>Skladovac\u00ed stabilita zahu\u0161\u0165ovadla<\/td><td>Vynikaj\u00edc\u00ed (such\u00fd pr\u00e1\u0161ek)<\/td><td>Vy\u017eaduje neutralizaci p\u0159\u00edmo v plechovce<\/td><\/tr><tr><td>Kompatibilita s biocidy<\/td><td>Standardn\u00ed<\/td><td>Standardn\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Kl\u00ed\u010dov\u00fd kompromis: HEC poskytuje pevnou strukturu p\u0159i n\u00edzk\u00e9m smykov\u00e9m nam\u00e1h\u00e1n\u00ed (odolnost proti st\u00e9k\u00e1n\u00ed, suspenze pigmentu) s slabou strukturou p\u0159i st\u0159edn\u00edm smykov\u00e9m nam\u00e1h\u00e1n\u00ed; HASE poskytuje rovnom\u011brn\u011bj\u0161\u00ed reologii s lep\u0161\u00ed odezvou p\u0159i vysok\u00e9m smykov\u00e9m nam\u00e1h\u00e1n\u00ed (p\u0159i nan\u00e1\u0161en\u00ed \u0161t\u011btcem), vy\u017eaduje v\u0161ak spr\u00e1vnou regulaci pH a nab\u00edz\u00ed men\u0161\u00ed odolnost proti st\u00e9k\u00e1n\u00ed. Mnoho komer\u010dn\u00edch n\u00e1t\u011brov\u00fdch hmot vyu\u017e\u00edv\u00e1 oboj\u00ed \u2013 HEC pro strukturu a zabr\u00e1n\u011bn\u00ed usazov\u00e1n\u00ed, HASE nebo mal\u00e9 mno\u017estv\u00ed HEUR pro vyrovn\u00e1n\u00ed a odolnost proti rozst\u0159ikov\u00e1n\u00ed. Tato hybridn\u00ed sm\u011bs p\u0159edstavuje osv\u011bd\u010denou recepturu, kterou doporu\u010dujeme v\u00fdrobc\u016fm n\u00e1t\u011brov\u00fdch hmot, kte\u0159\u00ed se pot\u00fdkaj\u00ed s probl\u00e9my s vyrovn\u00e1n\u00edm nebo tahem \u0161t\u011btce.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>HEC v barv\u00e1ch na vnit\u0159n\u00ed a vn\u011bj\u0161\u00ed st\u011bny<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Interi\u00e9rov\u00e9 barvy<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Interi\u00e9rov\u00e9 emulzn\u00ed barvy jsou barvy na vodn\u00ed b\u00e1zi ur\u010den\u00e9 pro rychlou aplikaci, snadn\u00e9 \u010di\u0161t\u011bn\u00ed a jednotn\u00fd vzhled na velk\u00fdch ploch\u00e1ch st\u011bn. Technologie HEC p\u0159isp\u00edv\u00e1 t\u0159emi m\u011b\u0159iteln\u00fdmi vlastnostmi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Suspenze pigmentu a plniva.<\/strong>\u00a0Barva s obsahem 30\u201345% pigmentu a plniv se usad\u00ed, pokud je jej\u00ed viskozita p\u0159i n\u00edzk\u00e9m st\u0159ihu p\u0159\u00edli\u0161 n\u00edzk\u00e1. HEC vytv\u00e1\u0159\u00ed mez kluzu, kter\u00e1 udr\u017euje TiO\u2082, uhli\u010ditan v\u00e1penat\u00fd a mastek v suspenzi po cel\u00e9 m\u011bs\u00edce. Toto mezn\u00ed nap\u011bt\u00ed tak\u00e9 zabra\u0148uje syner\u00e9ze \u2013 tvorb\u011b vrstvy vody, kter\u00e1 by se jinak tvo\u0159ila na povrchu plechovky.<\/li>\n\n\n\n<li><strong>Regulace pr\u016fv\u011bsu.<\/strong>\u00a0P\u0159i spot\u0159eb\u011b 7\u201310 m\u00b2\/l dosahuje tlou\u0161\u0165ka mokr\u00e9ho filmu interi\u00e9rov\u00e9 matn\u00e9 barvy p\u0159ibli\u017en\u011b 100\u2013150 \u00b5m. Bez dostate\u010dn\u00e9 struktury odoln\u00e9 proti n\u00edzk\u00e9mu smykov\u00e9mu nam\u00e1h\u00e1n\u00ed doch\u00e1z\u00ed b\u011bhem n\u011bkolika minut k rozte\u010den\u00ed a st\u00e9k\u00e1n\u00ed filmu. D\u00e1vkov\u00e1n\u00ed HEC se obvykle nastavuje tak, aby n\u00e1t\u011br pro\u0161el zkou\u0161kou st\u00e9k\u00e1n\u00ed (Lenetova st\u00e9kac\u00ed li\u0161ta, kl\u00edn 75\u2013250 \u00b5m) bez st\u00e9k\u00e1n\u00ed nad c\u00edlovou tlou\u0161\u0165kou mokr\u00e9ho filmu.<\/li>\n\n\n\n<li><strong>Pocit p\u0159i pou\u017e\u00edv\u00e1n\u00ed.<\/strong>\u00a0\u201cKonzistence\u201d n\u00e1t\u011bru p\u0159i nan\u00e1\u0161en\u00ed \u0161t\u011btcem a v\u00e1le\u010dkem \u2013 tedy odpor, kter\u00fd mal\u00ed\u0159 poci\u0165uje \u2013 je do zna\u010dn\u00e9 m\u00edry ur\u010dena viskozitou v oblasti st\u0159edn\u00edch smykov\u00fdch rychlost\u00ed (1\u2013100 s\u207b\u00b9). Technologie HEC zaji\u0161\u0165uje konzistenci, kterou mal\u00ed\u0159i popisuj\u00ed jako \u201cm\u00e1slovou\u201d, a sni\u017euje tvorbu mlhy a rozst\u0159ikov\u00e1n\u00ed p\u0159i nan\u00e1\u0161en\u00ed v\u00e1le\u010dkem, proto\u017ee vznikaj\u00edc\u00ed film je soudr\u017en\u00fd.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Jedna d\u016fle\u017eit\u00e1 pozn\u00e1mka ohledn\u011b interi\u00e9rov\u00fdch barev: <a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/hec-nc100kh\/\"><u>HEC<\/u><\/a>&nbsp;je citliv\u00fd na vodu a zbytkov\u00fd ve vod\u011b rozpustn\u00fd polymer v such\u00e9m filmu sni\u017euje odolnost proti mokr\u00e9mu od\u011bru, je-li pou\u017eit v nadm\u011brn\u00e9m mno\u017estv\u00ed. Standardn\u00edm \u0159e\u0161en\u00edm je udr\u017eovat HEC v minim\u00e1ln\u00edm d\u00e1vkov\u00e1n\u00ed, kter\u00e9 spl\u0148uje specifikace pro st\u00e9k\u00e1n\u00ed a usazov\u00e1n\u00ed, a p\u0159i formulaci pou\u017e\u00edt test odolnosti proti ot\u011bru (ASTM D2486, ISO 11998) jako z\u00e1v\u011bre\u010dnou kontrolu. P\u0159i obsahu HEC 0,25\u20130,40% dosahuje kvalitn\u00ed styren-akrylov\u00e1 nebo akrylov\u00e1 matn\u00e1 barva st\u00e1le 300\u2013500 cykl\u016f ot\u011bru do selh\u00e1n\u00ed, co\u017e je v\u00fdrazn\u011b nad prahovou hodnotou pro ozna\u010den\u00ed \u201comyvateln\u00e1\u201d.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Vn\u011bj\u0161\u00ed barvy<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e1t\u011bry vn\u011bj\u0161\u00edho zdiva a fas\u00e1d jsou vystaveny p\u016fsoben\u00ed UV z\u00e1\u0159en\u00ed, de\u0161t\u011b, teplotn\u00edm cykl\u016fm a z\u00e1saditosti \u010derstv\u00e9 cementov\u00e9 om\u00edtky. <a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>Hydroxyethylcelul\u00f3za (HEC)<\/u><\/a>&nbsp;zde se pou\u017e\u00edv\u00e1 se t\u0159emi \u00fapravami:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vy\u0161\u0161\u00ed d\u00e1vka HEC (0,30\u20130,501 TP3T)<\/strong>\u00a0aby se zajistil siln\u00fd a rovnom\u011brn\u00fd mokr\u00fd film na drsn\u00fdch, por\u00e9zn\u00edch podkladech, jako jsou om\u00edtky a betonov\u00e9 tv\u00e1rnice. S\u00ed\u0165 ve vodn\u00ed f\u00e1zi rovn\u011b\u017e zpomaluje pronik\u00e1n\u00ed vody do mokr\u00e9ho filmu, \u010d\u00edm\u017e zlep\u0161uje kryc\u00ed schopnost na sav\u00fdch povr\u0161\u00edch.<\/li>\n\n\n\n<li><strong>Kompatibilita fungicid\u016f a prost\u0159edk\u016f proti pl\u00edsn\u00edm.<\/strong>\u00a0D\u00edky sv\u00e9 neiontov\u00e9 povaze HEC neovliv\u0148uje \u00fa\u010dinnost konzerva\u010dn\u00edch l\u00e1tek ve filmu a nevytv\u00e1\u0159\u00ed komplexy se slou\u010deninami zinku \u010di m\u011bdi pou\u017e\u00edvan\u00fdmi v p\u0159\u00edpravc\u00edch pro venkovn\u00ed pou\u017eit\u00ed.<\/li>\n\n\n\n<li><strong>Technika vodot\u011bsnosti.<\/strong>\u00a0Vzhledem k tomu, \u017ee fas\u00e1dn\u00ed n\u00e1t\u011bry mus\u00ed vydr\u017eet \u0159adu let, hraje d\u016fle\u017eitou roli obsah ve vod\u011b rozpustn\u00fdch slo\u017eek ve vyschl\u00e9m n\u00e1t\u011bru. \u0158e\u0161en\u00edm, kter\u00e9 pou\u017e\u00edvaj\u00ed p\u0159edn\u00ed v\u00fdrobci fas\u00e1dn\u00edch n\u00e1t\u011br\u016f, je nahradit \u010d\u00e1st HEC syst\u00e9mem spole\u010dn\u00fdch zahu\u0161\u0165ovadel (viz n\u00ed\u017ee), p\u0159i\u010dem\u017e pod\u00edl polymer\u016f ve vodn\u00e9 f\u00e1zi se udr\u017euje pod 0,3\u20130,41 TP3T celkem.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Hybridn\u00ed p\u0159\u00edstup: HEC + asociativn\u00ed zahu\u0161\u0165ovadlo<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pro v\u00fdvoj\u00e1\u0159e n\u00e1t\u011brov\u00fdch hmot, kte\u0159\u00ed pou\u017e\u00edvaj\u00ed HEC, je neju\u017eite\u010dn\u011bj\u0161\u00edm vylep\u0161en\u00edm jeho sm\u00edch\u00e1n\u00ed s hydrofobn\u011b modifikovan\u00fdm asociativn\u00edm zahu\u0161\u0165ovadlem. Typick\u00fd v\u00fdchoz\u00ed syst\u00e9m:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Komponenta<\/strong><strong><\/strong><\/td><td><strong>Obvykl\u00e9 d\u00e1vkov\u00e1n\u00ed (% na barvu)<\/strong><strong><\/strong><\/td><\/tr><tr><td>HEC (vysok\u00e1 molekulov\u00e1 hmotnost, nap\u0159. 50 000 mPa\u00b7s)<\/td><td>0.15\u20130.25<\/td><\/tr><tr><td>Asociativn\u00ed zahu\u0161\u0165ovadlo HASE nebo HEUR<\/td><td>0,10\u20130,30 (v dod\u00e1van\u00e9m stavu)<\/td><\/tr><tr><td>Bal\u00ed\u010dek pro koalescenci + sm\u00e1\u010den\u00ed\/dispergaci<\/td><td>na jedno slo\u017een\u00ed<\/td><\/tr><tr><td>Neutraliz\u00e1tor (pouze pro HASE\/ASE)<\/td><td>na pH 8,5\u20139,0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nk\u00e1ch&nbsp;<a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>Hydroxyethylcelul\u00f3za (HEC)<\/u><\/a>&nbsp;zaji\u0161\u0165uje skladovac\u00ed stabilitu, odolnost proti st\u00e9k\u00e1n\u00ed a zabra\u0148uje usazov\u00e1n\u00ed; asociativn\u00ed zahu\u0161\u0165ovadlo obnovuje viskozitu p\u0159i st\u0159edn\u00edm a vysok\u00e9m st\u0159ihu, \u010d\u00edm\u017e zlep\u0161uje ta\u017enost p\u0159i nan\u00e1\u0161en\u00ed \u0161t\u011btcem, rozst\u0159ik p\u0159i nan\u00e1\u0161en\u00ed v\u00e1le\u010dkem a vyrovn\u00e1v\u00e1n\u00ed. Tato kombinace p\u0159edstavuje v oboru standardn\u00ed postup k z\u00edsk\u00e1n\u00ed n\u00e1t\u011brov\u00e9 hmoty, kter\u00e1 sou\u010dasn\u011b spl\u0148uje po\u017eadavky testu na st\u00e9k\u00e1n\u00ed i testu rovnom\u011brn\u00e9ho rozprost\u0159en\u00ed (test rovnom\u011brn\u00e9ho rozprost\u0159en\u00ed podle Leneta, ASTM D4062) \u2014 co\u017e je n\u011bco, \u010deho nelze dos\u00e1hnout pouze s HEC p\u0159i vysok\u00e9m obsahu plniv.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Doporu\u010den\u00e9 t\u0159\u00eddy viskozity a d\u00e1vkov\u00e1n\u00ed<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Aplikace<\/strong><strong><\/strong><\/td><td><strong>Stupe\u0148 HEC (2% roztok, mPa\u00b7s)<\/strong><strong><\/strong><\/td><td><strong>D\u00e1vkov\u00e1n\u00ed (% z celkov\u00e9ho mno\u017estv\u00ed barvy)<\/strong><strong><\/strong><\/td><td><strong>C\u00edlov\u00e1 viskozita<\/strong><strong><\/strong><\/td><\/tr><tr><td>Interi\u00e9r \u2013 matn\u00fd povrch<\/td><td>30,000\u201350,000<\/td><td>0.25\u20130.40<\/td><td>90\u2013100 KU; 1 000\u20131 800 mPa\u00b7s (LVF 60)<\/td><\/tr><tr><td>Vnit\u0159n\u00ed n\u00e1t\u011br v proveden\u00ed \u201eeggshell\u201c \/ \u201esatin\u201c<\/td><td>50,000\u201360,000<\/td><td>0.20\u20130.35<\/td><td>95\u2013105 KU<\/td><\/tr><tr><td>Vn\u011bj\u0161\u00ed zdivo \/ fas\u00e1da<\/td><td>30,000\u201350,000<\/td><td>0.30\u20130.50<\/td><td>95\u2013110 KU<\/td><\/tr><tr><td>Z\u00e1kladn\u00ed n\u00e1t\u011br \/ tmel<\/td><td>15,000\u201330,000<\/td><td>0.20\u20130.35<\/td><td>85\u201395 KU<\/td><\/tr><tr><td>Texturovan\u00e1 barva \/ s efektem \u0161tuku<\/td><td>50,000\u2013100,000<\/td><td>0.40\u20130.60<\/td><td>110\u2013125 KU<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pravidla v\u00fdb\u011bru:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vy\u0161\u0161\u00ed obsah pigmentu\/plniva (nad 35% pevn\u00fdch l\u00e1tek) \u2192 vy\u0161\u0161\u00ed d\u00e1vkov\u00e1n\u00ed; molekulovou hmotnost udr\u017eujte na m\u00edrn\u00e9 \u00farovni, aby nedo\u0161lo k nadm\u011brn\u00e9mu zahu\u0161t\u011bn\u00ed a vzniku gelov\u00fdch pruh\u016f.<\/li>\n\n\n\n<li>Vy\u0161\u0161\u00ed obsah TiO\u2082 (lep\u0161\u00ed kryc\u00ed schopnost, vy\u0161\u0161\u00ed n\u00e1klady) \u2192 je zapot\u0159eb\u00ed men\u0161\u00ed mno\u017estv\u00ed HEC, proto\u017ee TiO\u2082 samo o sob\u011b dod\u00e1v\u00e1 hmotnost; zajist\u011bte jeho spr\u00e1vn\u00e9 rozpt\u00fdlen\u00ed.<\/li>\n\n\n\n<li>Aplikace st\u0159\u00edk\u00e1n\u00edm \u2192 pou\u017eijte barvy s ni\u017e\u0161\u00ed viskozitou a ni\u017e\u0161\u00edm d\u00e1vkov\u00e1n\u00edm, aby byla barva dob\u0159e rozpra\u0161ovateln\u00e1.<\/li>\n\n\n\n<li>Pouze strojov\u00e9 nan\u00e1\u0161en\u00ed \u0161t\u011btcem\/v\u00e1le\u010dkem \u2192 posta\u010d\u00ed produkty st\u0159edn\u00ed viskozity; pro nan\u00e1\u0161en\u00ed st\u011brkou nebo vytv\u00e1\u0159en\u00ed struktury jsou zapot\u0159eb\u00ed produkty s vysokou viskozitou.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Viskozitu m\u011b\u0159te v\u017edy a\u017e po \u00fapln\u00e9 hydrataci (u produktu HEC je t\u0159eba po\u010dkat 20\u201360 minut na prom\u00edch\u00e1n\u00ed nebo odle\u017een\u00ed; pro rychlou hydrataci ve v\u00fdrob\u011b lze pou\u017e\u00edt typy s povrchovou \u00fapravou pro rychlou disperzi). Pot\u00e9 ov\u011b\u0159te vlastnosti pomoc\u00ed zkou\u0161ek na st\u00e9k\u00e1n\u00ed, vyrovn\u00e1n\u00ed a odolnost proti ot\u011bru, proto\u017ee hodnoty KU a Brookfield nedok\u00e1\u017eou pln\u011b p\u0159edpov\u011bd\u011bt chov\u00e1n\u00ed mokr\u00e9ho filmu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Jak vybrat HEC pro va\u0161i barvu a ov\u011b\u0159it jej\u00ed vlastnosti<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"403\" height=\"252\" data-id=\"15393\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/061035141222_\u526f\u672c.jpg\" alt=\"\" class=\"wp-image-15393\" title=\"\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/061035141222_\u526f\u672c.jpg 403w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/061035141222_\u526f\u672c-300x188.jpg 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/09\/061035141222_\u526f\u672c-18x12.jpg 18w\" sizes=\"(max-width: 403px) 100vw, 403px\" \/><figcaption><\/figcaption><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdb\u011br se \u0159\u00edd\u00ed typem barvy a jej\u00edmi c\u00edli v oblasti kontroly kvality, nikoli technick\u00fdm listem. Postupujte podle n\u00e1sleduj\u00edc\u00edho po\u0159ad\u00ed:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Stanovte si c\u00edle.<\/strong>\u00a0\u0158ada Stormer KU, viskozita podle Brookfielda, hodnota st\u00e9kavosti, samonivela\u010dn\u00ed schopnost (ASTM D4062) a odolnost proti od\u011bru (ASTM D2486 nebo ISO 11998) pro dan\u00fd typ barvy, kterou vyr\u00e1b\u00edte.<\/li>\n\n\n\n<li><strong>Vyberte stupe\u0148 HEC.<\/strong>\u00a0Jako v\u00fdchoz\u00ed bod pou\u017eijte v\u00fd\u0161e uvedenou tabulku. Pokud je p\u0159\u00ed\u010dinou selh\u00e1n\u00ed usazov\u00e1n\u00ed nebo proh\u00fdb\u00e1n\u00ed, nejprve zvy\u0161te molekulovou hmotnost (propleten\u00ed), pot\u00e9 d\u00e1vkov\u00e1n\u00ed. Pokud je p\u0159\u00ed\u010dinou selh\u00e1n\u00ed vyrovn\u00e1v\u00e1n\u00ed nebo tah\u00e1n\u00ed \u0161t\u011btcem, sni\u017ete molekulovou hmotnost nebo p\u0159idejte asocia\u010dn\u00ed spoluzahu\u0161\u0165ovadlo.<\/li>\n\n\n\n<li><strong>Zajist\u011bte optim\u00e1ln\u00ed hydrataci.<\/strong>\u00a0P\u0159i v\u00fdrob\u011b p\u0159idejte HEC do mletiny nebo do z\u0159ed\u011bn\u00e9 sm\u011bsi za m\u00edch\u00e1n\u00ed; povrchov\u011b upraven\u00e9 (poligranul\u00e1rn\u00ed, rychle sm\u00e1\u010div\u00e9) typy se rozpt\u00fdl\u00ed za 5\u201310 minut a odstran\u00ed \u201cryb\u00ed o\u010di\u201d. Nerozpu\u0161t\u011bn\u00fd HEC je nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou st\u00ed\u017enost\u00ed na \u201ezrnitost\u201c a gelov\u00e9 pruhy \u2013 zkontrolujte z\u0159ed\u011bn\u00fd roztok pomoc\u00ed Hegmanova m\u011b\u0159idla.<\/li>\n\n\n\n<li><strong>Spus\u0165te kompletn\u00ed sadu test\u016f kontroly kvality<\/strong>, v\u010detn\u011b skladovac\u00ed stability (4 t\u00fddny p\u0159i 50 \u00b0C) a cykl\u016f zmrazov\u00e1n\u00ed a rozmrazov\u00e1n\u00ed, pokud bude barva dod\u00e1v\u00e1na do chladn\u00fdch oblast\u00ed. HEC nechr\u00e1n\u00ed emulzi p\u0159ed po\u0161kozen\u00edm mrazem, ale jej\u00ed s\u00ed\u0165ov\u00e1 struktura zaji\u0161\u0165uje, \u017ee rozmrazen\u00e1 barva z\u016fstane homogenn\u00ed.<\/li>\n\n\n\n<li><strong>Zkontrolujte kompatibilitu s cel\u00fdm bal\u00ed\u010dkem<\/strong>\u00a0\u2014 barviva, odp\u011b\u0148ova\u010de, koalescentn\u00ed \u010dinidla a biocidy. Neiontov\u00fd HEC je kompatibiln\u00ed se v\u0161emi standardn\u00edmi p\u0159\u00edsadami do barev; jedinou \u010dastou chybou je p\u0159id\u00e1v\u00e1n\u00ed kationtov\u00fdch biocid\u016f nebo sm\u00e1\u010dedel, kter\u00e1 mohou zp\u016fsobit flokulaci aniontov\u00e9ho latexu, co\u017e je v\u0161ak probl\u00e9m latexu, nikoli HEC.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Spole\u010dnost TENESSY dod\u00e1v\u00e1 HEC v viskozitn\u00edch t\u0159\u00edd\u00e1ch 15 000\u2013100 000 mPa\u00b7s s mo\u017enost\u00ed povrchov\u00e9 \u00fapravy, v\u010detn\u011b kompletn\u00edch technick\u00fdch list\u016f a slu\u017eby posouzen\u00ed receptury. Nab\u00edz\u00edme bezplatn\u00e9 vzorky o hmotnosti 500\u20133 000 g \u2013 co\u017e je mno\u017estv\u00ed dosta\u010duj\u00edc\u00ed k v\u00fdrob\u011b a testov\u00e1n\u00ed 500\u20131 000 kg n\u00e1t\u011brov\u00e9ho hmotu p\u0159i typick\u00e9m d\u00e1vkov\u00e1n\u00ed \u2013 a n\u00e1\u0161 t\u00fdm v\u00fdzkumu a v\u00fdvoje v\u00e1m doporu\u010d\u00ed konkr\u00e9tn\u00ed typ produktu a v\u00fdchoz\u00ed d\u00e1vkov\u00e1n\u00ed pro va\u0161i konkr\u00e9tn\u00ed recepturu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u010cASTO KLADEN\u00c9 DOTAZY<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ot\u00e1zka 1: Jak p\u0159\u00edpravek HEC zahu\u0161\u0165uje barvy na vodn\u00ed b\u00e1zi?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A: \u0158et\u011bzce HEC se rozpou\u0161t\u011bj\u00ed ve vodn\u00e9 f\u00e1zi a fyzicky se propl\u00e9taj\u00ed do s\u00edt\u011b, kter\u00e1 zvy\u0161uje viskozitu p\u0159i n\u00edzk\u00e9m smykov\u00e9m nam\u00e1h\u00e1n\u00ed \u2014 jedn\u00e1 se o \u010dist\u011b hydrodynamick\u00fd mechanismus. P\u0159i p\u016fsoben\u00ed smykov\u00e9ho nam\u00e1h\u00e1n\u00ed se tato propleten\u00e1 struktura rozpad\u00e1 (barva se z\u0159ed\u00ed a rozprost\u00edr\u00e1); v klidu se op\u011bt obnovuje (barva odol\u00e1v\u00e1 st\u00e9k\u00e1n\u00ed a usazov\u00e1n\u00ed). Jeliko\u017e se jedn\u00e1 o neiontov\u00fd polymer, je tento mechanismus nez\u00e1visl\u00fd na hodnot\u011b pH a obsahu sol\u00ed, d\u00edky \u010demu\u017e je viskozita HEC stabiln\u00ed v cel\u00e9m rozsahu slo\u017een\u00ed barev.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ot\u00e1zka 2: Jak\u00e9 je obvykl\u00e9 d\u00e1vkov\u00e1n\u00ed HEC v latexov\u00e9 barv\u011b?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A: U v\u011bt\u0161iny latexov\u00fdch barev pro vnit\u0159n\u00ed i vn\u011bj\u0161\u00ed pou\u017eit\u00ed se pohybuje pracovn\u00ed rozsah v rozmez\u00ed 0,25\u20130,50% HEC z celkov\u00e9 hmotnosti barvy. Matn\u00e9 interi\u00e9rov\u00e9 barvy s obsahem pevn\u00fdch l\u00e1tek 30\u201335% obvykle vy\u017eaduj\u00ed 0,25\u20130,40%; siln\u011b pln\u011bn\u00e9 exteri\u00e9rov\u00e9 barvy na zdivo 0,30\u20130,50%; texturovan\u00e9 n\u00e1t\u011bry 0,40\u20130,60%. P\u0159esn\u00e9 mno\u017estv\u00ed se stanov\u00ed podle c\u00edlov\u00e9 viskozity Stormer (obvykle 90\u2013110 KU) a potvrzuje se zkou\u0161kami st\u00e9k\u00e1n\u00ed, usazov\u00e1n\u00ed a odolnosti proti ot\u011bru.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ot\u00e1zka \u010d. 3: Je HEC lep\u0161\u00ed ne\u017e akrylov\u00e1 zahu\u0161\u0165ovadla do barev?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A: Pln\u00ed r\u016fzn\u00e9 funkce. HEC je bezkonkuren\u010dn\u00ed pro struktury s n\u00edzk\u00fdm smykov\u00fdm nam\u00e1h\u00e1n\u00edm \u2013 odolnost proti st\u00e9k\u00e1n\u00ed, suspenze pigment\u016f, zabr\u00e1n\u011bn\u00ed usazov\u00e1n\u00ed \u2013 a je odoln\u00fd v\u016f\u010di pH a soli. Akrylov\u00e1 zahu\u0161\u0165ovadla (HASE\/ASE) zaji\u0161\u0165uj\u00ed viskozitu p\u0159i st\u0159edn\u00edm a vysok\u00e9m st\u0159ihu, co\u017e p\u0159isp\u00edv\u00e1 k lep\u0161\u00edmu nan\u00e1\u0161en\u00ed \u0161t\u011btcem a vyrovn\u00e1n\u00ed povrchu, vy\u017eaduj\u00ed v\u0161ak regulaci pH a nab\u00edzej\u00ed slab\u0161\u00ed kontrolu nad st\u00e9k\u00e1n\u00edm. Osv\u011bd\u010den\u00fdm postupem v modern\u00ed n\u00e1t\u011brov\u00e9 technologii je kombinace HEC s mal\u00fdm mno\u017estv\u00edm HASE nebo HEUR, \u010d\u00edm\u017e se spojuje struktura s vyrovn\u00e1n\u00edm povrchu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ot\u00e1zka \u010d. 4: Ovliv\u0148uje HEC odolnost lakov\u00e9ho filmu proti od\u011bru?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A: HEC z\u016fst\u00e1v\u00e1 v such\u00e9m filmu ve form\u011b ve vod\u011b rozpustn\u00e9ho polymeru, tak\u017ee jeho nadm\u011brn\u00e9 d\u00e1vkov\u00e1n\u00ed m\u016f\u017ee film zm\u011bk\u010dit a sn\u00ed\u017eit odolnost proti mokr\u00e9mu ot\u011bru. V praxi zachov\u00e1n\u00ed minim\u00e1ln\u00edho d\u00e1vkov\u00e1n\u00ed HEC, kter\u00e9 spl\u0148uje specifikace pro st\u00e9k\u00e1n\u00ed a usazov\u00e1n\u00ed (obvykle \u2264 0,45%), zachov\u00e1v\u00e1 odolnost proti ot\u011bru: kvalitn\u00ed akrylov\u00e9 barvy p\u0159i tomto d\u00e1vkov\u00e1n\u00ed st\u00e1le spl\u0148uj\u00ed 300\u2013500+ cykl\u016f ot\u011bru za mokra podle normy ASTM D2486. Pro dosa\u017een\u00ed maxim\u00e1ln\u00ed odolnosti proti ot\u011bru nahra\u010fte \u010d\u00e1st HEC asociativn\u00edm spoluzahu\u0161\u0165ovadlem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ot\u00e1zka \u010d. 5: Pro\u010d je moje barva zahu\u0161t\u011bn\u00e1 p\u0159\u00edpravkem HEC pln\u00e1 hrudek nebo zrn\u00ed\u010dek?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A: Jedn\u00e1 se t\u00e9m\u011b\u0159 v\u017edy o probl\u00e9m s nerozpu\u0161t\u011bn\u00fdm pr\u00e1\u0161kem, nikoli o vadu v\u00fdrobku. HEC je t\u0159eba p\u0159id\u00e1vat pomalu do dob\u0159e prom\u00edchan\u00e9 vody (nebo z\u0159ed\u011bn\u00e9 vody), aby se ka\u017ed\u00e1 \u010d\u00e1stice hydratovala samostatn\u011b; u standardn\u00edch typ\u016f je t\u0159eba m\u00edchat 20\u201360 minut. Pokud pot\u0159ebujete rychlou hydrataci p\u0159i v\u00fdrob\u011b, pou\u017eijte povrchov\u011b upraven\u00fd, rychle se disperguj\u00edc\u00ed typ HEC, kter\u00fd se navlh\u010d\u00ed b\u011bhem n\u011bkolika sekund a pln\u011b hydratuje za 5\u201310 minut. \u00dapln\u00e9 rozpu\u0161t\u011bn\u00ed v\u017edy ov\u011b\u0159te pomoc\u00ed Hegmanova m\u011b\u0159idla nebo kontrolou viskozity filtrovan\u00e9 sm\u011bsi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Z\u00e1v\u011br<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/hec-nc100kh\/\"><u>HEC<\/u><\/a>&nbsp;Ve vodov\u00fdch barv\u00e1ch zaji\u0161\u0165uje t\u0159i vlastnosti, u nich\u017e v\u00fdrobce barev nem\u016f\u017ee d\u011blat kompromisy: skladovac\u00ed stabilitu bez usazov\u00e1n\u00ed, vertik\u00e1ln\u00ed nan\u00e1\u0161en\u00ed bez st\u00e9k\u00e1n\u00ed a reprodukovatelnou viskozitu v jednotliv\u00fdch \u0161ar\u017e\u00edch. Jeho neiontov\u00fd mechanismus zahu\u0161\u0165ov\u00e1n\u00ed ve vodn\u00ed f\u00e1zi je kompatibiln\u00ed se v\u0161emi b\u011b\u017en\u00fdmi latexov\u00fdmi pojivy a v\u0161emi standardn\u00edmi p\u0159\u00edsadami do barev a jeho pseudoplastick\u00fd tok p\u0159esn\u011b odpov\u00edd\u00e1 po\u017eadavk\u016fm \u0161t\u011btce, v\u00e1le\u010dku nebo st\u0159\u00edkac\u00ed pistole. S viskozitami od 15 000 do 100 000 mPa\u00b7s a d\u00e1vkami 0,25\u20130,50% se HEC hod\u00ed pro interi\u00e9rov\u00e9 matn\u00e9 n\u00e1t\u011bry, exteri\u00e9rov\u00e9 n\u00e1t\u011bry na zdivo, z\u00e1kladn\u00ed n\u00e1t\u011bry a texturovan\u00e9 n\u00e1t\u011bry \u2013 a dokonale se m\u00eds\u00ed s asociativn\u00edmi zahu\u0161\u0165ovadly, kdy\u017e je t\u0159eba zv\u00fd\u0161it vyrovn\u00e1vac\u00ed schopnost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Spole\u010dnost TENESSY Chemical je p\u0159edn\u00edm \u010d\u00ednsk\u00fdm v\u00fdrobcem HEC s v\u00edce ne\u017e 10 000 z\u00e1kazn\u00edky ve v\u00edce ne\u017e 40 zem\u00edch, kter\u00fd vyr\u00e1b\u00ed na n\u011bmeck\u00e9m za\u0159\u00edzen\u00ed s p\u0159\u00edsnou kontrolou viskozity. Vy\u017e\u00e1dejte si bezplatn\u00fd vzorek o hmotnosti 500\u20133 000 g, doporu\u010den\u00ed ohledn\u011b typu produktu nebo posouzen\u00ed receptury od na\u0161eho t\u00fdmu pro v\u00fdzkum a v\u00fdvoj n\u00e1t\u011brov\u00fdch hmot \u2013 dodac\u00ed lh\u016fta je pouh\u00fdch 7\u201314 dn\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Doporu\u010den\u00e9 produkty:<\/strong>\u00a0<a href=\"https:\/\/tenessy.com\/products\/hec-hydroxyethyl-cellulose\/\"><u>HEC (hydroxyethylcelul\u00f3za)<\/u><\/a>\u00a0<strong>Dal\u0161\u00ed \u010dl\u00e1nky:<\/strong>\u00a0<a href=\"https:\/\/tenessy.com\/hec-vs-hpmc\/\"><u>HEC vs. HPMC: V\u00fdb\u011br spr\u00e1vn\u00e9ho celul\u00f3zov\u00e9ho etheru pro n\u00e1t\u011brov\u00e9 hmoty<\/u><\/a>\u00a0| <a href=\"https:\/\/tenessy.com\/hpmc-for-detergent\/\"><u>HPMC pro prac\u00ed prost\u0159edky: zahu\u0161\u0165ovadlo a suspenzn\u00ed \u010dinidlo v v\u00fdrobc\u00edch ka\u017edodenn\u00ed chemie<\/u><\/a>\u00a0| <a href=\"https:\/\/tenessy.com\/cmc-carboxymethyl-cellulose-applications\/\"><u>CMC (karboxymethylcelul\u00f3za): Pr\u016fvodce pr\u016fmyslov\u00fdmi aplikacemi<\/u><\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>HEC\u00a0in water-based paint is the workhorse thickener of the paint industry, providing the pseudoplastic flow, sag resistance, and pigment stabilization that latex paints need from a single, non-ionic polymer. This guide explains the thickening mechanism of hydroxyethyl cellulose, how its rheology compares with acrylic thickeners, and how to select viscosity grade and dosage for interior [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15396,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-15390","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/posts\/15390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/comments?post=15390"}],"version-history":[{"count":1,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/posts\/15390\/revisions"}],"predecessor-version":[{"id":15398,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/posts\/15390\/revisions\/15398"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/media\/15396"}],"wp:attachment":[{"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/media?parent=15390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/categories?post=15390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tenessy.com\/cs\/wp-json\/wp\/v2\/tags?post=15390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}