{"id":14788,"date":"2026-06-17T06:26:05","date_gmt":"2026-06-17T06:26:05","guid":{"rendered":"https:\/\/tenessy.com\/?p=14788"},"modified":"2026-06-17T06:26:06","modified_gmt":"2026-06-17T06:26:06","slug":"choose-specialized-hpmc-for-gypsum-products-retarding-water-loss-to-enhance-workability","status":"publish","type":"post","link":"https:\/\/tenessy.com\/cs\/vyberte-si-specialni-prisadu-hpmc-pro-sadrove-vyrobky-ktera-zpomaluje-unik-vody-a-zlepsuje-zpracovatelnost\/","title":{"rendered":"Vyberte si speci\u00e1ln\u00ed HPMC pro s\u00e1drov\u00e9 v\u00fdrobky: zpomalen\u00ed \u00fabytku vody pro zlep\u0161en\u00ed zpracovatelnosti"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"14788\" class=\"elementor elementor-14788\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fdbc6e4 e-con-full e-flex e-con e-parent\" data-id=\"fdbc6e4\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-105ebe2 elementor-widget elementor-widget-image\" data-id=\"105ebe2\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2025\/04\/Gypsum.webp\" class=\"attachment-large size-large wp-image-11500\" alt=\"S\u00e1dra\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2025\/04\/Gypsum.webp 800w, https:\/\/tenessy.com\/wp-content\/uploads\/2025\/04\/Gypsum-300x200.webp 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2025\/04\/Gypsum-768x512.webp 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2025\/04\/Gypsum-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e0d9856 elementor-widget elementor-widget-heading\" data-id=\"e0d9856\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00davod<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ae54ec elementor-widget elementor-widget-text-editor\" data-id=\"5ae54ec\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Na adrese <a href=\"https:\/\/tenessy.com\/applications\/drymix-mortar\/\">malta m\u00edchan\u00e1 za sucha<\/a> syst\u00e9my pro stavebn\u00ed materi\u00e1ly na b\u00e1zi s\u00e1dry \u2013 jako je s\u00e1drov\u00e1 om\u00edtka, sp\u00e1rovac\u00ed hmoty a <a href=\"https:\/\/tenessy.com\/applications\/application-self-leveling\/\">samonivela\u010dn\u00ed s\u00e1drov\u00e9 hmoty<\/a>-<a href=\"https:\/\/tenessy.com\/products\/hpmc-hydroxypropyl-methyl-cellulose\/\">hydroxypropylmethylcelul\u00f3za (HPMC)<\/a> p\u0159edstavuje pouze n\u011bkolik tis\u00edcin celkov\u00e9 hmotnosti such\u00e9 sm\u011bsi (obvykle 0,1%\u20130,5%). P\u0159esto hraje rozhoduj\u00edc\u00ed roli p\u0159i ur\u010dov\u00e1n\u00ed vlastnost\u00ed materi\u00e1lu. Vzhledem k tomu, \u017ee modern\u00ed stavebnictv\u00ed klade st\u00e1le vy\u0161\u0161\u00ed n\u00e1roky na \u00fa\u010dinnost a kvalitu,\u00a0<\/span><strong><span class=\"\">Ne v\u0161echny typy HPMC jsou vhodn\u00e9 pro s\u00e1drov\u00e9 syst\u00e9my. Pouze speci\u00e1ln\u011b upraven\u00e9 HPMC ur\u010den\u00e9 pro s\u00e1drov\u00e9 syst\u00e9my dok\u00e1\u017ee \u00fa\u010dinn\u011b vy\u0159e\u0161it t\u0159i hlavn\u00ed probl\u00e9my s\u00e1drov\u00fdch v\u00fdrobk\u016f: \u201ep\u0159\u00edli\u0161 rychl\u00e9 schnut\u00ed\u201c, \u201e\u0161patnou rozt\u00edratelnost\u201c a \u201esklon k prask\u00e1n\u00ed\u201c.<\/span><\/strong><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">Tento \u010dl\u00e1nek p\u0159in\u00e1\u0161\u00ed podrobnou anal\u00fdzu z hlediska dynamiky tekutin a chemie interakce vody a stavebn\u00edch materi\u00e1l\u016f, kter\u00e1 se zab\u00fdv\u00e1 t\u00edm, jak specializovan\u00fd HPMC zlep\u0161uje zpracovatelnost s\u00e1drov\u00fdch v\u00fdrobk\u016f prost\u0159ednictv\u00edm\u00a0<\/span><strong><span class=\"\">omezen\u00ed \u00fabytku vody<\/span><\/strong><span class=\"\">\u00a0a\u00a0<\/span><strong><span class=\"\">optimalizace reologie<\/span><\/strong><span class=\"\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbece77 elementor-widget elementor-widget-heading\" data-id=\"bbece77\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">I. Podstata hydratace s\u00e1drovce a jej\u00ed vnit\u0159n\u00ed rozpor: Pro\u010d je nezbytn\u00e9 pou\u017e\u00edt speci\u00e1ln\u00ed p\u0159\u00edsadu<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7df1793 elementor-widget elementor-widget-image\" data-id=\"7df1793\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-1024x683.webp\" class=\"attachment-large size-large wp-image-14127\" alt=\"HPMC \u2013 hydroxypropylmethylcelul\u00f3za\" srcset=\"https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-1024x683.webp 1024w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-300x200.webp 300w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-768x512.webp 768w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-1536x1024.webp 1536w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-2048x1365.webp 2048w, https:\/\/tenessy.com\/wp-content\/uploads\/2026\/03\/HPMC-Hydroxypropyl-Methyl-Cellulose-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-740e220 elementor-widget elementor-widget-text-editor\" data-id=\"740e220\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Abychom pochopili \u00falohu specializovan\u00e9ho HPMC, je t\u0159eba nejprve objasnit z\u00e1kladn\u00ed vlastnosti s\u00e1drov\u00fdch materi\u00e1l\u016f.<\/span><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">Stavebn\u00ed s\u00e1drovec (hemihydr\u00e1t s\u00e1drovce, CaSO\u2084\u00b70,5H\u2082O) p\u0159i kontaktu s vodou proch\u00e1z\u00ed hydrata\u010dn\u00ed reakc\u00ed, p\u0159i n\u00ed\u017e se znovu tvo\u0159\u00ed dihydr\u00e1t s\u00e1drovce (CaSO\u2084\u00b72H\u2082O) a vznik\u00e1 krystalick\u00e1 s\u00ed\u0165 \u2013 pr\u00e1v\u011b v tom spo\u010d\u00edv\u00e1 zdroj jeho mechanick\u00e9 pevnosti. Tento proces v\u0161ak p\u0159edstavuje inherentn\u00ed stavebn\u00ed rozpor:<\/span><\/p><ol start=\"1\"><li><p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Rozpor mezi rychlou hydratac\u00ed a pot\u0159ebou vody<\/span><\/strong><span class=\"\">: Teoretick\u00e1 spot\u0159eba vody pro hydrataci hemihydr\u00e1tu s\u00e1drovce \u010din\u00ed pouh\u00fdch 18,6%, av\u0161ak v praxi se pro dosa\u017een\u00ed dostate\u010dn\u00e9 tekutosti obsah p\u0159idan\u00e9 vody \u010dasto pohybuje v rozmez\u00ed 60%\u201380%. Pokud nen\u00ed p\u0159ebyte\u010dn\u00e1 voda \u00fa\u010dinn\u011b \u201euzam\u010dena\u201c, rychle unikne v d\u016fsledku absorpce podkladem nebo odpa\u0159ov\u00e1n\u00ed do okol\u00ed, co\u017e vede k ne\u00fapln\u00e9 hydrataci a pr\u00e1\u0161en\u00ed povrchu.<\/span><\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Kr\u00e1tk\u00e1 doba otev\u0159en\u00ed<\/span><\/strong><span class=\"\">: Oby\u010dejn\u00e1 s\u00e1drov\u00e1 pasta tuhne a tvrdne mimo\u0159\u00e1dn\u011b rychle (b\u011bhem n\u011bkolika minut a\u017e n\u011bco m\u00e1lo p\u0159es deset minut), co\u017e ponech\u00e1v\u00e1 velmi kr\u00e1tk\u00fd \u010dasov\u00fd prostor pro nan\u00e1\u0161en\u00ed, vyrovn\u00e1n\u00ed a fin\u00e1ln\u00ed \u00fapravu.<\/span><\/p><\/li><\/ol><p class=\"ds-markdown-paragraph\"><span class=\"\">B\u011b\u017en\u00e1 zahu\u0161\u0165ovadla \u2013 jako jsou nap\u0159\u00edklad konven\u010dn\u00ed \u0161kroby nebo b\u011b\u017en\u00e1 celul\u00f3za \u2013 sice mohou zv\u00fd\u0161it viskozitu, nedok\u00e1\u017eou v\u0161ak regulovat interakci mezi molekulami vody a krystaly s\u00e1dry.\u00a0<\/span><strong><span class=\"\">Zaveden\u00ed specializovan\u00e9ho HPMC m\u00e1 pr\u00e1v\u011b za c\u00edl nastolit rovnov\u00e1hu v r\u00e1mci tohoto rozporu: zachovat dostate\u010dn\u00e9 mno\u017estv\u00ed vody b\u011bhem f\u00e1ze nan\u00e1\u0161en\u00ed a z\u00e1rove\u0148 zajistit v\u010dasnou a \u00faplnou hydrataci.<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c8fd91 elementor-widget elementor-widget-heading\" data-id=\"0c8fd91\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">II.  Mikromechanismus specializovan\u00e9ho HPMC: V\u00edce ne\u017e jen zadr\u017eov\u00e1n\u00ed vody \u2013 regulace \u201estruktury vody\u201c<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-beb8d88 elementor-widget elementor-widget-heading\" data-id=\"beb8d88\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1.  Vod\u00edkov\u00e9 vazby: zpomalen\u00ed \u00faniku \u201evoln\u00e9 vody\u201c<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d3e02e elementor-widget elementor-widget-text-editor\" data-id=\"9d3e02e\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Molekuly HPMC se prost\u0159ednictv\u00edm vod\u00edkov\u00fdch vazeb v\u00e1\u017eou na molekuly vody, \u010d\u00edm\u017e p\u0159em\u011b\u0148uj\u00ed \u010d\u00e1st \u201evoln\u00e9 vody\u201c na v\u00e1zanou vodu. Hydrofiln\u00ed skupiny na molekul\u00e1rn\u00edch \u0159et\u011bzc\u00edch HPMC tvo\u0159\u00ed <\/span><strong><span class=\"\">s\u00ed\u0165 vod\u00edkov\u00fdch vazeb<\/span><\/strong><span class=\"\">\u00a0s vodou, \u010d\u00edm\u017e se v\u00fdrazn\u011b zvy\u0161uje viskozita kapaln\u00e9 f\u00e1ze.<\/span><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">V s\u00e1drov\u00e9 past\u011b se to projevuje takto: kdy\u017e se materi\u00e1l na b\u00e1zi s\u00e1dry nan\u00e1\u0161\u00ed na savou st\u011bnu z p\u00f3robetonu nebo na suchou s\u00e1drokartonovou desku,\u00a0<\/span><strong><span class=\"\">S\u00ed\u0165 polymern\u00edch film\u016f vytvo\u0159en\u00e1 HPMC \u00fa\u010dinn\u011b br\u00e1n\u00ed rychl\u00e9mu pronik\u00e1n\u00ed molekul vody sm\u011brem k podkladu<\/span><\/strong><span class=\"\">. Tato \u201ezpomalen\u00e1 ztr\u00e1ta vody\u201c nejen zaji\u0161\u0165uje, \u017ee z\u016fstane k dispozici dostatek vody pro dokon\u010den\u00ed hydratace s\u00e1drov\u00fdch \u010d\u00e1stic, ale tak\u00e9 zabra\u0148uje smr\u0161\u0165ov\u00e1n\u00ed p\u0159i vysych\u00e1n\u00ed a prask\u00e1n\u00ed zp\u016fsoben\u00e9mu p\u0159\u00edli\u0161 rychl\u00fdm \u00fabytkem vlhkosti.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b651205 elementor-widget elementor-widget-heading\" data-id=\"b651205\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.  \u201eDvoj\u00ed \u00fa\u010dinek\u201c: P\u0159esn\u00e1 regulace doby tuhnut\u00ed<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38d3ec4 elementor-widget elementor-widget-text-editor\" data-id=\"38d3ec4\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Mezi stavebn\u00edmi d\u011bln\u00edky panuje myln\u00e1 p\u0159edstava, \u017ee HPMC se p\u0159id\u00e1v\u00e1 v\u00fdhradn\u011b jako retard\u00e9r tuhnut\u00ed. Ve skute\u010dnosti m\u00e1 speci\u00e1ln\u00ed HPMC \u00fa\u010dinek\u00a0<\/span><strong><span class=\"\">dvoj\u00ed \u00fa\u010dinek<\/span><\/strong><span class=\"\">\u00a0o s\u00e1drov\u00e9m syst\u00e9mu:<\/span><\/p><ul><li><p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Fyzik\u00e1ln\u00ed zahu\u0161t\u011bn\u00ed<\/span><\/strong><span class=\"\">\u00a0(fyzik\u00e1ln\u00ed \u00fa\u010dinek): Po rozpu\u0161t\u011bn\u00ed zvy\u0161uje HPMC viskozitu pasty a sni\u017euje rychlost dif\u00faze iont\u016f, \u010d\u00edm\u017e zpomaluje rozpou\u0161t\u011bn\u00ed hemihydr\u00e1tu s\u00e1drovce \u2013 vykazuje tak zpomaluj\u00edc\u00ed \u00fa\u010dinek.<\/span><\/p><\/li><li><p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Podpora v oblasti chemick\u00e9ho pr\u016fmyslu<\/span><\/strong><span class=\"\">\u00a0(mo\u017en\u00fd \u00fa\u010dinek): V\u00fdzkumy nazna\u010duj\u00ed, \u017ee specializovan\u00fd HPMC d\u00edky stabilizaci struktur vodn\u00edch klastr\u016f poskytuje v\u00edce nuklea\u010dn\u00edch m\u00edst pro krystalizaci dihydr\u00e1tu s\u00e1drovce. Jakmile dojde k zah\u00e1jen\u00ed hydratace, aktivn\u011b podporuje vz\u00e1jemn\u00e9 propojen\u00ed krystal\u016f.<\/span><\/p><\/li><\/ul><p class=\"ds-markdown-paragraph\"><span class=\"\">V tom spo\u010d\u00edv\u00e1 z\u00e1sadn\u00ed rozd\u00edl mezi specializovan\u00fdm HPMC a b\u011b\u017enou celul\u00f3zou: zaji\u0161\u0165uje dostate\u010dn\u011b dlouhou dobu zpracovatelnosti a z\u00e1rove\u0148 zabra\u0148uje nadm\u011brn\u00e9mu zpomalen\u00ed tuhnut\u00ed, kter\u00e9 by ohrozilo kone\u010dnou pevnost, \u010d\u00edm\u017e zachov\u00e1v\u00e1 pevnostn\u00ed vlastnosti v ran\u00e9m st\u00e1diu tuhnut\u00ed.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9b2cd0b e-flex e-con-boxed e-con e-parent\" data-id=\"9b2cd0b\" data-element_type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47b4288 elementor-widget elementor-widget-heading\" data-id=\"47b4288\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">III. Zlep\u0161en\u00ed zpracovatelnosti stavebn\u00edch materi\u00e1l\u016f: Od \u201elepiv\u00e9 st\u011brky\u201c k \u201ehladk\u00e9mu klouz\u00e1n\u00ed\u201c<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4a0041 elementor-widget elementor-widget-text-editor\" data-id=\"a4a0041\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pro aplik\u00e1tory p\u0159\u00edmo na stavb\u011b jsou mechanismy sice teoretickou z\u00e1le\u017eitost\u00ed, ale \u201epocit p\u0159i pr\u00e1ci\u201c je realita. Speci\u00e1ln\u00ed HPMC zlep\u0161uje zpracovatelnost p\u0159i stavb\u011b n\u00e1sleduj\u00edc\u00edmi hmatateln\u00fdmi zp\u016fsoby:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60c894d elementor-widget elementor-widget-heading\" data-id=\"60c894d\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1.  Tixotropie a odolnost proti st\u00e9k\u00e1n\u00ed<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ac20c4 elementor-widget elementor-widget-text-editor\" data-id=\"3ac20c4\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Prezentace vysoce kvalitn\u00edho HPMC ur\u010den\u00e9ho pro s\u00e1drov\u00fd pr\u016fmysl\u00a0<\/span><strong><span class=\"\">pseudoplasticita<\/span><\/strong><span class=\"\">\u00a0(sn\u00ed\u017een\u00ed viskozity p\u0159i smyku). B\u011bhem m\u00edch\u00e1n\u00ed a nan\u00e1\u0161en\u00ed st\u011brkou, p\u0159i vysok\u00fdch smykov\u00fdch rychlostech, viskozita kles\u00e1, d\u00edky \u010demu\u017e je pasta lehk\u00e1 a snadno se nan\u00e1\u0161\u00ed (hladk\u00e9 rozt\u00edr\u00e1n\u00ed). Jakmile se nan\u00e1\u0161en\u00ed st\u011brkou zastav\u00ed nebo p\u0159i nan\u00e1\u0161en\u00ed na strop nad hlavou, p\u0159i n\u00edzk\u00fdch smykov\u00fdch rychlostech se viskozita rychle obnov\u00ed, \u010d\u00edm\u017e se dos\u00e1hne vynikaj\u00edc\u00ed\u00a0<\/span><strong><span class=\"\">odolnost proti pr\u016fv\u011bsu<\/span><\/strong><span class=\"\">.<\/span><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">B\u011b\u017en\u00e1 celul\u00f3za \u010dasto zp\u016fsobuje \u201elepen\u00ed na st\u011brku\u201c (ulp\u00edv\u00e1n\u00ed na hlad\u00edtku) a pot\u00ed\u017ee p\u0159i vyrovn\u00e1v\u00e1n\u00ed, zat\u00edmco speci\u00e1ln\u00ed HPMC d\u00edky optimalizovan\u00e9mu rozlo\u017een\u00ed molekulov\u00e9 hmotnosti zaji\u0161\u0165uje vynikaj\u00edc\u00ed kluznost a rozt\u00edratelnost.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22fd1b9 elementor-widget elementor-widget-heading\" data-id=\"22fd1b9\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Otev\u0159en\u00fd \u010das a mo\u017enost p\u0159epracov\u00e1n\u00ed<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e5fa09b elementor-widget elementor-widget-text-editor\" data-id=\"e5fa09b\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">P\u0159i pr\u00e1ci v hork\u00e9m podneb\u00ed nebo na vysoce sav\u00fdch podkladech (nap\u0159. na vysoce sav\u00fdch cihlov\u00fdch st\u011bn\u00e1ch \u010di lehk\u00fdch s\u00e1drokartonov\u00fdch desk\u00e1ch) doch\u00e1z\u00ed u b\u011b\u017en\u00fdch v\u00fdrobk\u016f \u010dasto k p\u0159ed\u010dasn\u00e9mu vytvrzen\u00ed okraj\u016f v d\u016fsledku rychl\u00e9ho \u00fabytku vlhkosti, co\u017e m\u00e1 za n\u00e1sledek nekvalitn\u00ed sp\u00e1rov\u00e1n\u00ed.<\/span><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">Speci\u00e1ln\u00ed HPMC vytv\u00e1\u0159\u00ed na povrchu hust\u00fd film, kter\u00fd zadr\u017euje vodu, \u010d\u00edm\u017e zpomaluje rychlost odpa\u0159ov\u00e1n\u00ed povrchov\u00e9 vlhkosti. T\u00edm se prodlu\u017euje\u00a0<\/span><strong><span class=\"\">doba otev\u0159en\u00fdch dve\u0159\u00ed<\/span><\/strong><span class=\"\">, co\u017e umo\u017e\u0148uje del\u0161\u00ed nan\u00e1\u0161en\u00ed na velk\u00fdch ploch\u00e1ch a zaji\u0161\u0165uje, \u017ee p\u0159i p\u0159ekr\u00fdv\u00e1n\u00ed jednotliv\u00fdch tah\u016f nedoch\u00e1z\u00ed k trh\u00e1n\u00ed ani vzniku hrub\u00fdch okraj\u016f.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19b245a elementor-widget elementor-widget-heading\" data-id=\"19b245a\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Mazivost a schopnost vn\u00e1\u0161et vzduch<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fce8f5b elementor-widget elementor-widget-text-editor\" data-id=\"fce8f5b\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\">D\u00edky sv\u00fdm povrchov\u011b aktivn\u00edm vlastnostem vtahuje HPMC p\u0159i m\u00edch\u00e1n\u00ed jemn\u00e9 vzduchov\u00e9 bublinky (co\u017e se obvykle vyva\u017euje pomoc\u00ed odp\u011b\u0148ova\u010d\u016f). M\u00edrn\u00e9 vn\u00e1\u0161en\u00ed vzduchu p\u016fsob\u00ed v past\u011b jako \u201emikrokuli\u010dkov\u00e1 lo\u017eiska\u201c, co\u017e v\u00fdrazn\u011b zvy\u0161uje mazivost, umo\u017e\u0148uje s\u00e1drov\u00e9 past\u011b snadn\u011bji se rozt\u00edrat po povrchu st\u011bny a vede k hlad\u0161\u00edmu a hutn\u011bj\u0161\u00edmu povrchu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc2449f elementor-widget elementor-widget-heading\" data-id=\"bc2449f\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">IV. Pr\u016fvodce v\u00fdb\u011brem: Jak rozpoznat HPMC ur\u010den\u00fd v\u00fdhradn\u011b pro s\u00e1dru?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c29d16f elementor-widget elementor-widget-text-editor\" data-id=\"c29d16f\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Ne v\u0161echny typy HPMC jsou se s\u00e1drovcem stejn\u011b kompatibiln\u00ed. P\u0159i praktick\u00e9m navrhov\u00e1n\u00ed receptur spole\u010dnost TENESSY doporu\u010duje zohlednit n\u00e1sleduj\u00edc\u00ed technick\u00e9 parametry, aby byla zaji\u0161t\u011bna vynikaj\u00edc\u00ed funk\u010dnost:<\/span><\/p><div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"><table><thead><tr><th><strong><span class=\"\">Rozm\u011br parametru<\/span><\/strong><\/th><th><strong><span class=\"\">B\u011b\u017en\u00fd\/univerz\u00e1ln\u00ed HPMC<\/span><\/strong><\/th><th><strong><span class=\"\">HPMC ur\u010den\u00fd pro s\u00e1dru\u00a0<\/span><\/strong><\/th><th><strong><span class=\"\">Dopad na v\u00fdkonnost<\/span><\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong><span class=\"\">Viskozita (mPa\u00b7s)<\/span><\/strong><\/td><td><span class=\"\">Jednoduch\u00e1 nebo nadm\u011brn\u011b vysok\u00e1 viskozita<\/span><\/td><td><span class=\"\">St\u0159edn\u00ed a\u017e vysok\u00e1 viskozita (nap\u0159. 40 000\u201375 000) p\u0159izp\u016fsoben\u00e1 r\u016fzn\u00fdm typ\u016fm s\u00e1dry<\/span><\/td><td><span class=\"\">Vyva\u017euje viskozitu a tekutost, aby se zabr\u00e1nilo \u201eulp\u00edv\u00e1n\u00ed na st\u011brce\u201c<\/span><\/td><\/tr><tr><td><strong><span class=\"\">M\u00edra zadr\u017eov\u00e1n\u00ed vody<\/span><\/strong><\/td><td><span class=\"\">St\u0159edn\u00ed (&lt;98%)<\/span><\/td><td><strong><span class=\"\">Vysok\u00e1 schopnost zadr\u017eov\u00e1n\u00ed vody (\u226599%)<\/span><\/strong><span class=\"\">, optimalizov\u00e1no pro hemihydr\u00e1t s\u00e1drovce<\/span><\/td><td><span class=\"\">Zpomaluje \u00fanik vody a zaji\u0161\u0165uje pevnost mezif\u00e1zov\u00e9ho spojen\u00ed<\/span><\/td><\/tr><tr><td><strong><span class=\"\">Teplota gelovat\u011bn\u00ed<\/span><\/strong><\/td><td><span class=\"\">Konven\u010dn\u00ed (58\u201365 \u00b0C)<\/span><\/td><td><span class=\"\">Modifikovan\u00e1 (70\u201390 \u00b0C), tepeln\u011b odoln\u00e1 kvalita<\/span><\/td><td><span class=\"\">P\u0159izp\u016fsobuje se letn\u00edm stavebn\u00edm prac\u00edm za vysok\u00fdch teplot, aby se zabr\u00e1nilo ztr\u00e1t\u011b tepeln\u00e9 \u00fa\u010dinnosti<\/span><\/td><\/tr><tr><td><strong><span class=\"\">Rychlost rozpou\u0161t\u011bn\u00ed<\/span><\/strong><\/td><td><span class=\"\">Rychl\u00e9 rozpou\u0161t\u011bn\u00ed s tendenc\u00ed k aglomeraci<\/span><\/td><td><strong><span class=\"\">S prodlou\u017een\u00fdm rozpou\u0161t\u011bn\u00edm \/ s povrchovou \u00fapravou<\/span><\/strong><\/td><td><span class=\"\">Zaji\u0161\u0165uje rovnom\u011brn\u00e9 rozpt\u00fdlen\u00ed p\u0159i such\u00e9m m\u00edch\u00e1n\u00ed s postupn\u00fdm uvol\u0148ov\u00e1n\u00edm viskozity po p\u0159id\u00e1n\u00ed vody<\/span><\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-514c49a elementor-widget elementor-widget-heading\" data-id=\"514c49a\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">V. Z\u00e1v\u011br<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63e8315 elementor-widget elementor-widget-text-editor\" data-id=\"63e8315\" data-element_type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"ds-markdown-paragraph\"><span class=\"\">Na dne\u0161n\u00edm st\u00e1le v\u00edce konkuren\u010dn\u00edm trhu se s\u00e1drov\u00fdmi v\u00fdrobky pouh\u00e9 \u201ep\u0159id\u00e1v\u00e1n\u00ed v\u011bt\u0161\u00edho mno\u017estv\u00ed\u201c b\u011b\u017en\u00e9ho HPMC nejen zvy\u0161uje n\u00e1klady, ale m\u016f\u017ee tak\u00e9 zp\u016fsobit ne\u017e\u00e1douc\u00ed jevy, jako je \u201elepiv\u00e1 st\u011brka\u201c a \u201eprodlou\u017een\u00e9 nevytvrzen\u00ed\u201c. V\u011bdecky podlo\u017een\u00fd p\u0159\u00edstup spo\u010d\u00edv\u00e1 v\u00a0<\/span><strong><span class=\"\">spr\u00e1vn\u00fd v\u00fdb\u011br<\/span><\/strong><span class=\"\">.<\/span><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">V\u00fdb\u011br <a href=\"https:\/\/tenessy.com\/\">TENESSY<\/a>HPMC t\u00e9to spole\u010dnosti, speci\u00e1ln\u011b vyvinut\u00fd pro stavebn\u00ed materi\u00e1ly na b\u00e1zi s\u00e1dry, v podstat\u011b znamen\u00e1 vyu\u017eit\u00ed pokro\u010dil\u00e9 technologie vych\u00e1zej\u00edc\u00ed z\u00a0<\/span><strong><span class=\"\">regulace vodn\u00edch staveb<\/span><\/strong><span class=\"\">. Autor:\u00a0<\/span><strong><span class=\"\">zpomalen\u00ed sm\u011brov\u00e9 migrace voln\u00e9 vody<\/span><\/strong><span class=\"\">, d\u00edky speci\u00e1ln\u00edmu HPMC z\u00edsk\u00e1vaj\u00ed s\u00e1drov\u00e9 pasty v\u00fdjime\u010dn\u00e9\u00a0<\/span><strong><span class=\"\">zadr\u017eov\u00e1n\u00ed vody, vynikaj\u00edc\u00ed odolnost proti st\u00e9k\u00e1n\u00ed a hladk\u00fd, p\u0159\u00edjemn\u00fd pocit p\u0159i nan\u00e1\u0161en\u00ed<\/span><\/strong><span class=\"\">.<\/span><\/p><p class=\"ds-markdown-paragraph\"><span class=\"\">To nejen\u017ee sni\u017euje technick\u00e1 rizika, jako jsou praskliny a n\u00edzk\u00e1 povrchov\u00e1 pevnost s\u00e1drov\u00fdch malt, ale tak\u00e9 v\u00fdrazn\u011b zvy\u0161uje efektivitu v\u00fdstavby. Pro v\u00fdrobce stavebn\u00edch materi\u00e1l\u016f, kte\u0159\u00ed usiluj\u00ed o \u0161pi\u010dkovou kvalitu, je investice do specializovan\u00e9ho HPMC nejd\u016fle\u017eit\u011bj\u0161\u00edm krokem k odli\u0161en\u00ed jejich produkt\u016f a zlep\u0161en\u00ed jejich vlastnost\u00ed.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>V syst\u00e9mech such\u00fdch maltov\u00fdch sm\u011bs\u00ed pro stavebn\u00ed materi\u00e1ly na b\u00e1zi s\u00e1dry \u2013 jako jsou s\u00e1drov\u00e9 om\u00edtky, sp\u00e1rovac\u00ed hmoty a samonivela\u010dn\u00ed s\u00e1drov\u00e9 sm\u011bsi \u2013 tvo\u0159\u00ed hydroxypropylmethylcelul\u00f3za (HPMC) pouze n\u011bkolik tis\u00edcin celkov\u00e9 hmotnosti such\u00e9 sm\u011bsi (obvykle 0,1%\u20130,5%).<\/p>","protected":false},"author":1,"featured_media":11500,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[35],"tags":[],"class_list":["post-14788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - 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