Hydroxyethyl Methyl Cellulose (HEMC)

Hydroxyethyl methyl cellulose (HEMC) yog dej-soluble polymer muab tau los ntawm cellulose.Nws yog non-ionic, non-toxic, thiab tsis-flammable compound uas yog dav siv nyob rau hauv ntau yam kev lag luam thiab cov neeg siv khoom siv.HEMC muaj nuj nqis rau nws lub peev xwm los ua lub thickener, binder, thiab rheology modifier hauv ntau cov khoom.

HEMC yog tsim los ntawm chemically modifying natural cellulose fibers.Hauv cov txheej txheem no, cov cellulose fibers tau kho nrog sodium hydroxide los tsim alkali cellulose.Ethylene oxide ces ntxiv rau qhov sib tov, uas ua rau cov cellulose ua hydroxyethyl cellulose.Thaum kawg, methyl chloride yog ntxiv rau qhov sib tov los tsim HEMC.

HEMC yog siv rau ntau yam kev siv, suav nrog kev tsim kho, khoom noj khoom haus, kev saib xyuas tus kheej, thiab tshuaj.Ib qho ntawm cov kev siv tseem ceeb ntawm HEMC yog nyob rau hauv kev tsim kho, uas nws yog siv nyob rau hauv ntau yam khoom xws li qhuav mix mortars, putties, pobzeb adhesives, thiab gypsum khoom.

Nyob rau hauv qhuav mix mortars, HEMC yog siv los ua thickener, binder, thiab dej tuav tus neeg sawv cev.Nws pab txhim kho kev ua haujlwm ntawm cov mortar thiab tso cai rau kev tswj xyuas cov ntsiab lus dej zoo dua.Qhov no yog ib qho tseem ceeb vim hais tias cov ntsiab lus dej ntawm lub mortar cuam tshuam rau nws qhov sib xws, teem sijhawm, thiab lub zog kawg.

Hauv putties, HEMC feem ntau yog siv los ua cov thickener thiab khi.Qhov sib ntxiv ntawm HEMC rau qhov sib tov pab txhim kho kev ua haujlwm ntawm lub putty thiab tso cai rau kev tswj xyuas cov ntsiab lus dej zoo dua.HEMC kuj tseem pab tiv thaiv kev sib cais ntawm ntau yam khoom hauv cov txheej txheem putty, thiab nws txhim kho qhov adhesion ntawm putty rau substrates.

Hauv cov nplais nplaum, HEMC feem ntau yog siv los ua tus neeg saib xyuas dej.Qhov sib ntxiv ntawm HEMC rau qhov sib tov pab txhim kho kev ua haujlwm ntawm cov nplaum thiab tso cai rau kev tswj xyuas cov dej kom zoo dua.HEMC kuj tseem pab tiv thaiv kev sib cais ntawm ntau yam khoom nyob rau hauv daim ntawv nplaum, thiab nws txhim kho qhov adhesion ntawm cov nplaum rau substrates.

Hauv cov khoom gypsum, HEMC yog siv los ua cov thickener, binder, thiab dej tuav tus neeg sawv cev.Nws pab txhim kho kev ua haujlwm ntawm cov khoom siv gypsum thiab tso cai rau kev tswj cov dej kom zoo dua.Qhov no yog qhov tseem ceeb vim tias cov dej ntsiab lus ntawm cov khoom gypsum cuam tshuam rau nws lub sijhawm teem thiab lub zog kawg.

Hauv cov khoom noj khoom haus, HEMC feem ntau yog siv los ua cov thickener, stabilizer, thiab emulsifier.Nws yog siv rau hauv ntau yam khoom noj khoom haus, nrog rau cov kua ntses, hnav khaub ncaws, thiab cov khoom siv mis nyuj.HEMC muaj nuj nqis rau nws lub peev xwm los txhim kho kev ntxhib los mos thiab ruaj khov ntawm cov khoom no.

Hauv cov khoom tu tus kheej, HEMC yog siv los ua cov thickener, stabilizer, thiab emulsifier.Nws yog siv nyob rau hauv ntau yam sib txawv ntawm cov khoom tu tus kheej, nrog rau cov tshuaj zawv plaub hau, tshuaj pleev, thiab tshuaj pleev ib ce.HEMC muaj nuj nqis rau nws lub peev xwm los txhim kho kev ntxhib los mos thiab ruaj khov ntawm cov khoom no.

Hauv kev lag luam tshuaj, HEMC yog siv los ua ib qho kev sib khi thiab disintegrant.Nws yog siv rau hauv cov ntsiav tshuaj formulations los txhim kho cov ntsiav tshuaj lub zog txhua yam thiab pab nyob rau hauv lub ntsiav tshuaj disintegration thiab dissolution nyob rau hauv lub cev.