Kev siv HPMC hauv kev tsim kho yog dab tsi?

Hydroxypropyl methylcellulose (HPMC) yog ib hom cellulose ether uas tau siv dav hauv kev tsim kho kev lag luam. Nws yog cov dej-soluble polymer uas yog siv los ua cov khoom siv ntxiv hauv ntau cov ntaub ntawv tsim kho, xws li cement, pob zeb, mortar, thiab plaster. HPMC yog siv rau hauv kev tsim kho los txhim kho cov khoom ntawm cov ntaub ntawv no, xws li kev ua haujlwm, tuav dej, thiab adhesion.

HPMC yog ib qho hluavtaws polymer muab tau los ntawm cellulose, uas yog ib tug natural polymer pom nyob rau hauv cov nroj tsuag. Nws yog tsim los ntawm reacting cellulose nrog propylene oxide thiab ces hydroxypropylating nws. Cov txheej txheem hydroxypropylation ntxiv hydroxyl pawg rau cellulose molecules, uas ua rau lawv ntau soluble hauv dej. Qhov no ua rau HPMC yog ib qho zoo ntxiv rau cov ntaub ntawv tsim kho, vim nws tuaj yeem txhim kho cov khoom ntawm cov ntaub ntawv no yam tsis hloov lawv cov tshuaj muaj pes tsawg leeg.

HPMC tuaj yeem siv ntau yam khoom siv, xws li cement, pob zeb, mortar, thiab plaster. Hauv cov cement, HPMC tuaj yeem siv los txhim kho kev ua haujlwm ntawm kev sib tov, nrog rau txo cov dej xav tau rau qhov sib xws. Qhov no tuaj yeem pab txo qis cov cement uas yuav tsum tau ua rau txoj haujlwm muab, nrog rau txo tus nqi ntawm txoj haujlwm. HPMC tseem tuaj yeem siv rau hauv pob zeb los txhim kho kev ua haujlwm thiab kev tuav dej ntawm kev sib tov. Qhov no tuaj yeem pab txo qis cov dej uas xav tau rau qhov sib xws, nrog rau txo tus nqi ntawm txoj haujlwm.

Hauv mortar thiab plaster, HPMC tuaj yeem siv los txhim kho qhov adhesion ntawm mortar lossis plaster rau substrate. Qhov no tuaj yeem pab txo qis lub sijhawm thiab kev siv zog uas yuav tsum tau siv cov tshuaj khib nyiab lossis plaster, thiab txo cov nqi ntawm txoj haujlwm. HPMC kuj tseem siv tau los txhim kho cov dej tuav ntawm cov mortar lossis plaster, uas tuaj yeem pab txo cov dej xav tau rau qhov sib xws.

Zuag qhia tag nrho, HPMC yog ntau yam thiab muaj txiaj ntsig zoo ntxiv rau cov khoom siv tsim kho. Nws tuaj yeem siv los txhim kho kev ua haujlwm, tuav dej, thiab adhesion ntawm cov cement, pob zeb, mortar, thiab plaster. Qhov no tuaj yeem pab txo qis lub sijhawm thiab kev siv zog uas yuav tsum tau ua rau txoj haujlwm muab, nrog rau txo tus nqi ntawm txoj haujlwm.