Hydroxyethylcellulose (HEC) yog ib qho cellulose ether uas tsis yog ionic soluble uas siv dav hauv ntau yam lag luam. HEC yog los ntawm cov cellulose ntuj thiab hloov kho kom muaj cov pab pawg hydroxyethyl ntawm cov cellulose backbone. Qhov kev hloov kho no ua rau HEC yaj tau zoo heev hauv dej thiab lwm cov kuab tshuaj polar, ua rau nws yog ib qho polymer zoo tagnrho rau ntau yam kev siv.
Ib qho ntawm kev siv tseem ceeb ntawm HEC yog ua cov khoom ua kom tuab thiab nplaum rau ntau yam khoom siv rau cov neeg siv khoom thiab cov khoom lag luam. HEC feem ntau siv rau hauv cov tshuaj pleev ib ce thiab cov khoom siv tu tus kheej xws li tshuaj zawv plaub hau, tshuaj pleev thiab tshuaj txhuam hniav kom muab viscosity thiab ruaj khov. Nws kuj tseem siv rau hauv cov xim pleev, txheej thiab nplaum kom muab cov khoom nplaum thiab txhim kho kev tiv thaiv dej noo.
HEC yog ib qho khoom siv ntau yam rau cov khoom no vim nws muaj peev xwm ua kom viscosity ntau ntxiv hauv cov dej-raws li cov kab ke yam tsis cuam tshuam rau lwm yam khoom. Los ntawm kev ntxiv HEC rau cov khoom no, cov chaw tsim khoom tuaj yeem kho qhov tuab, cov qauv thiab kev sib xws ntawm lawv cov khoom kom tau raws li cov neeg siv khoom nyiam thiab cov kev xav tau ntawm kev lag luam.
Lwm daim ntawv thov tseem ceeb ntawm HEC yog nyob rau hauv kev lag luam tshuaj. HEC yog ib qho khoom xyaw uas siv ntau hauv ntau yam khoom siv tshuaj, suav nrog cov ntsiav tshuaj, tshuaj ntsiav, thiab cov txheej txheem xa tshuaj. Vim lawv muaj peev xwm hloov kho cov khoom rheology thiab o ntawm cov tshuaj, HEC tuaj yeem txhim kho kev siv tau ntawm cov khoom xyaw nquag thiab txhim kho kev tswj hwm kev tso tshuaj. HEC kuj tseem siv los txhim kho kev ruaj khov ntawm cov emulsions thiab cov kev ncua hauv cov tshuaj.
Hauv kev lag luam khoom noj, HEC siv ua cov khoom ua kom tuab thiab ruaj khov hauv ntau yam khoom noj, suav nrog cov kua ntses, cov kua ntses thiab cov khoom noj mis nyuj. HEC yog cov khoom xyaw ntuj tsim uas muaj kev nyab xeeb thiab tau pom zoo rau kev siv hauv khoom noj los ntawm cov koom haum tswj hwm thoob ntiaj teb. Nws kuj tseem siv ua cov roj hloov hauv cov khoom noj uas muaj roj tsawg, muab cov qauv zoo sib xws thiab qhov ncauj zoo li cov khoom muaj roj tag nrho.
HEC kuj tseem siv rau hauv kev lag luam kev tsim kho ua cov khoom ua kom tuab thiab cov khoom sib txuas hauv cov khoom cementitious xws li grouts, mortars thiab adhesives. Cov khoom thixotropic ntawm HEC ua rau nws yog cov khoom xyaw zoo tagnrho rau cov khoom no, tso cai rau lawv nyob hauv qhov chaw thiab tiv thaiv kev sagging lossis settling. HEC muaj kev nplaum zoo dua thiab tiv thaiv dej, ua rau nws yog cov khoom xyaw tseem ceeb hauv cov khoom tiv thaiv dej thiab sealing.
Hydroxyethyl cellulose yog ib qho cellulose ether uas tsis yog ionic soluble nrog ntau yam kev siv hauv ntau yam lag luam. HEC yog ib qho khoom siv tau ntau yam thiab tseem ceeb hauv ntau yam khoom siv rau cov neeg siv khoom thiab kev lag luam, muab kev ruaj khov, viscosity, thiab kev tswj hwm kev tso tawm tshuaj. HEC yog ib qho khoom xyaw ntuj, muaj kev nyab xeeb thiab ib puag ncig zoo uas tau pom zoo rau kev siv los ntawm ntau lub tebchaws thoob ntiaj teb. Nws cov khoom tshwj xeeb thiab kev ua tau ntau yam ua rau HEC yog ib qho khoom xyaw tseem ceeb hauv ntau yam khoom thiab kev lag luam.
Lub sijhawm tshaj tawm: Cuaj hlis-21-2023