Ntshiab hypromelloseHPMCyog qhov pom kev zoo nrog qhov me me ntawm qhov sib txawv ntawm 0.3 txog 0.4 ml, thaum deev HPMC yog ntau lub xov tooj ntawm tes, hnyav dua thiab txawv ntawm cov khoom tiag tiag hauv qhov tsos. Cov ntshiab hypromellose HPMC aqueous tov yog ntshiab thiab muaj lub teeb transmittance siab, thiab nws cov dej tuav tus nqi yog tsawg dua 97%, thaum lub HPMC aqueous tov yog turbid, thiab nws cov dej tuav tus nqi yuav tsis ncav cuag 80%. Ntshiabhypromellose HPMCyuav tsum tsis txhob hnov qab ammonia, hmoov txhuv nplej siab thiab dej cawv, thaum quav cawvHPMCnyiam hnov ntau yam tsw thiab hnov hnyav. Pure hypromellose HPMC hmoov yog fibrous nyob rau hauv ib lub iav magnifying, thaum deev HPMC hmoov yog granular solids los yog muaju.
Hydroxypropylmethylcellulose yog cov khoom siv hauv tsev ntau ntxiv hauv kev siv cov khoom siv hauv tsev, siv dav hauv kev lag luam thiab ntau yam. Hydroxypropyl methyl cellulose tuaj yeem muab faib ua hom dej txias instant thiab kub yaj hom.
Cov dej txias soluble HPMC tuaj yeem siv rau putty hmoov, mortar, kua nplaum, kua coatings, thiab cov khoom siv tshuaj txhua hnub. Kub yaj HPMC feem ntau yog siv rau cov khoom siv hmoov qhuav thiab sib tov ncaj qha nrog cov hmoov qhuav rau daim ntawv thov, xws li putty hmoov thiab mortar. Hydroxypropylmethylcellulose tuaj yeem siv dav los txhim kho kev ua haujlwm ntawm cov khoom siv hauv tsev xws li cement thiab gypsum. Nyob rau hauv cov cement-based mortar, dej tuav tau tuaj yeem txhim kho, lub sij hawm ntsuas lub sijhawm thiab lub sijhawm qhib tuaj yeem txuas ntxiv, thiab cov dej ntws tawm tuaj yeem txo qis.
Hydroxypropylmethylcellulose tuaj yeem siv rau kev sib xyaw cov khoom siv hauv tsev thiab cov tsev, thiab cov qauv sib xyaw qhuav tuaj yeem sib xyaw nrog dej kom tau raws li qhov xav tau. Cellulose ether dissolves sai dua thiab tsis clump. Methylcellulose tuaj yeem sib xyaw nrog cov hmoov qhuav rau cov khoom siv hauv tsev. Nws muaj cov yam ntxwv ntawm cov dej txias dispersion, thiab tuaj yeem ua rau cov sib tov sib xyaw kom zoo dua thiab txawm tias Suspended solids hais. Tsis tas li ntawd, nws tuaj yeem txhim kho lubricity thiab plasticity, nce kev ua tau zoo, thiab ua kom cov khoom tsim tau yooj yim dua. Txhim kho cov dej tuav thiab cov sij hawm ua hauj lwm ntev dua pab tiv thaiv kev ntws ntsug ntawm mortar thiab vuas, ncua sij hawm txias, thiab txhim kho kev ua haujlwm.
Hydroxypropylmethylcellulose tuaj yeem txhim kho kev sib raug zoo ntawm cov nplais pobzeb nplaum, txhim kho cov kab nrib pleb thiab cov pob qij txha ntoo, tsis tsuas yog ua kom cov huab cua nyob hauv mortar, tab sis kuj txo qis qhov ua rau tawg. Nws tseem tuaj yeem txhim kho qhov pom ntawm cov khoom thiab txhim khu kev tiv thaiv sagging ntawm cov nplais pobzeb nplaum.
Post lub sij hawm: Lub Xya hli ntuj-17-2023