IHydroxypropylmethylcellulose (HPMC) iphuma ku-cellulose esetshenziswa kabanzi njenge-binder kanye nokujiya emikhakheni eyahlukene okuhlanganisa ukwakhiwa, imithi kanye nokudla. I-HPMC iyi-polymer encibilikayo emanzini enganikeza izinzuzo ezinkulu njengento enamathelayo embonini yamathayela. Kulesi sihloko, sixoxa ngendima ye-hydroxypropylmethylcellulose (HPMC) kuma-adhesives amathayili.
ethula
Izinamathiselo zamathayela ziyizinto ezisekelwe ku-polymer ezisetshenziselwa ukubopha amathayili kuma-substrates ahlukene njengodaka lukasimende, ukhonkolo, i-plasterboard nezinye izindawo. Izinamathiselo zamathayela zingahlukaniswa zibe izinamathiselo eziphilayo kanye nezinamathelisi ezingaphili. Izinamatheliso zamathayili ezinto eziphilayo ngokuvamile zisekelwe kuma-polymers okwenziwa njenge-epoxy, i-vinyl noma i-acrylic, kuyilapho izinto ezinamathelayo ezingaphili zisekelwe kusimende noma izinto ezimbiwa phansi.
I-HPMC isetshenziswa kabanzi njengesengezo kuzinto ezinamathelayo zamathayela wemvelo ngenxa yezakhiwo zayo ezihlukile njengokugcina amanzi, ukuqina, kanye nezakhiwo ze-rheological. Lezi zakhiwo zibalulekile ukuze kuqinisekiswe ukuthi izinamathiselo zamathayili zixutshwe kahle, zikhuthaza ukusebenza kahle futhi zinciphisa isikhathi sokumisa. I-HPMC isiza futhi ukukhulisa amandla okunamathela kuthayela, kuyenze iqine kakhudlwana.
ukugcinwa kwamanzi
Ukugcinwa kwamanzi kuyisici esibalulekile sokuqinisekisa ukuthi izinamathiselo zamathayela azomi ngokushesha. I-HPMC iyisigcini samanzi esihle kakhulu, ingagcina kufika ku-80% wesisindo sayo emanzini. Lesi sakhiwo siqinisekisa ukuthi okunamathelayo kuhlala kusebenziseka isikhathi eside, okunikeza isilungisi sethayela isikhathi esiningi sokubeka ithayela, ngisho nosuku lonke. Ukwengeza, i-HPMC ithuthukisa inqubo yokwelapha, iqinisekisa isibopho esiqinile nokuthuthukisa ukuqina.
ukuqina
I-viscosity ye-adhesives ye-tile ihlobene ngokuqondile nobukhulu bengxube, okuthinta kalula ukusetshenziswa kanye namandla esibopho. I-HPMC iyi-thickener esebenza kahle kakhulu engafinyelela ama-viscosity aphezulu ngisho nasezintweni eziphansi. Ngakho-ke, abathuthukisi be-adhesive tile bangasebenzisa i-HPMC ukukhiqiza izinto zokunamathisela zamathayili ngokungaguquguquki okufanele kunoma iyiphi imfuneko yohlelo lokusebenza.
Izakhiwo ze-Rheological
Izici ze-rheological ze-HPMC zingathuthukisa ukusebenza kwezinamathelisi zamathayili. I-viscosity iyashintsha ngezinga lokucindezelwa kwe-shear esetshenzisiwe, indawo eyaziwa ngokuthi ukugunda kwe-shear. Ukunciphisa i-shear kuthuthukisa izici zokugeleza zokunamathisela ithayela, okwenza kube lula ukusabalalisa phezu kwezindonga naphansi ngomzamo omncane. Ukwengeza, i-HPMC ihlinzeka ngokusatshalaliswa kwengxube, igwema ukunqwabelana kanye nokusebenzisa okungalingani.
Thuthukisa amandla esibopho
Ukusebenza kwe-adhesives ye-tile kuncike kakhulu emandleni esibopho: i-adhesive kumele ibe namandla ngokwanele ukugcina i-tile inamathele ngokuqinile ebusweni futhi imelane nezingcindezi ezingabangela ukuthi i-tile iqhekeke noma ishintshe. I-HPMC inikela kule ndawo ngokuthuthukisa ikhwalithi ye-adhesive futhi ithuthukise ukunamathela kwayo. Ama-resin e-HPMC akhiqiza okunamathelayo kwamathayela okusebenza okuphezulu okunamaleveli aphezulu wamandla ebhondi kanye nokuqina okwandisiwe. Ukusetshenziswa kwe-HPMC kusiza ukuvimbela ukuqhekeka kwe-grout noma ithayela futhi kugcina ithayela liqinile ukuze libukeke liphelile isikhathi eside.
Ekuphetheni
Sengiphetha, i-HPMC ithuthukisa okunamathelayo kwe-organic tile ngokunikeza izinzuzo eziningi, okuhlanganisa ukugcinwa kwamanzi, ukuqina, izakhiwo ze-rheological namandla ebhondi athuthukisiwe. Ikhono le-HPMC lokuthuthukisa ukusebenza kahle, ukunciphisa isikhathi sokumisa nokuvimbela ukuqhekeka kwamathayela kwenze kwaba yingxenye ebalulekile yemboni yamathayili. Ukusetshenziswa kwe-HPMC ekuthuthukisweni kwezinamathiselo zamathayela kungathuthukisa ikhwalithi yomkhiqizo kuyilapho kunikeza izixazululo eziqinile, eziqinile zokubopha ezisebenza ngendlela ejabulisa ngobuhle. Zonke lezi zinzuzo zifakazela ukuthi i-HPMC iyi-polymer eshintsha umdlalo emakethe enamathelayo yamathayili.
Isikhathi sokuthumela: Jun-21-2023