Hydroxyethylcellulose (HEC) yog ib yam khoom siv tau ntau yam siv rau ntau yam lag luam vim nws cov yam ntxwv tshwj xeeb. Nws cov ntawv thov muaj xws li cov tshuaj ntxuav xim thiab cov cement mus rau cov khoom siv rau phab ntsa thiab cov neeg sawv cev rau dej. Kev thov rau HEC tau nce siab hauv xyoo tas los no thiab xav tias yuav txuas ntxiv loj hlob yav tom ntej.
HEC yog muab los ntawm cellulose, ib qho polymer ntuj pom nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. Cov pab pawg Hydroxyethyl raug qhia rau hauv cov saw hlau cellulose los ntawm kev sib xyaw ua ke, yog li hloov nws cov khoom. Cov HEC uas tshwm sim tuaj yeem yaj hauv dej thiab cov kuab tshuaj organic, ua rau nws yog qhov kev xaiv nrov rau ntau yam kev siv.
Ib qho ntawm kev siv HEC feem ntau yog nyob rau hauv kev lag luam coatings. Nws ua haujlwm ua ib qho thickener thiab muab cov xim viscosity, ua rau nws yooj yim dua rau kev siv. HEC kuj pab tiv thaiv cov xim kom tsis txhob ntws los yog sagging, kom ntseeg tau tias qhov chaw du thiab sib npaug. Tsis tas li ntawd, nws txhim kho cov dej ntws ntawm cov xim, ua rau nws yooj yim dua rau cov xim kom lo rau ntawm qhov chaw uas tab tom pleev xim. HEC kuj txhim kho cov xim tiv taus dej thiab kev puas tsuaj, yog li ua rau nws ruaj khov.
HEC kuj tseem siv ua tus neeg ntxuav hauv kev lag luam pleev xim. Nws pab tshem tawm cov av thiab lwm yam tsis huv ntawm qhov chaw pleev xim, ua rau cov xim muaj kev sib txuas zoo dua. Nws kuj tseem tuaj yeem pab tiv thaiv cov xim kom tsis txhob tev tawm lossis tev tawm los ntawm kev txhim kho nws cov khoom sib txuas.
Lwm qhov kev siv loj ntawm HEC yog nyob rau hauv kev lag luam kev tsim kho. Nws yog siv dav hauv cov cement thiab cov qauv pob zeb vim nws muaj peev xwm ua haujlwm ua tus neeg sawv cev thickener, stabilizer thiab tus neeg sawv cev khaws dej. Nws txhim kho qhov ua haujlwm ntawm cov cement thiab cov sib tov pob zeb, ua rau lawv yooj yim dua rau kev tuav thiab tsim. HEC kuj pab txo cov dej uas xav tau hauv qhov sib tov, ua rau muaj kev ruaj khov thiab lub zog zoo dua.
Ntxiv rau cov cement thiab concrete, HEC kuj siv rau hauv cov qauv putty phab ntsa. Nws ua haujlwm ua ib qho thickener, txhim kho cov khoom nplaum ntawm putty thiab ua kom du thiab sib npaug ntawm phab ntsa. HEC kuj pab txo qhov shrinkage uas tshwm sim thaum lub sijhawm ziab, yog li ua kom lub putty ruaj khov.
HEC kuj tseem siv ua tus neeg sawv cev khaws dej hauv kev ua liaj ua teb. Nws raug ntxiv rau hauv av kom pab khaws cov dej noo, uas yog qhov tseem ceeb rau kev loj hlob ntawm cov nroj tsuag. HEC pab txhim kho cov qauv av, ua rau nws yooj yim dua rau cov hauv paus hniav cog kom nkag mus thiab nqus dej thiab cov as-ham.
Zuag qhia tag nrho, kev siv HEC tau hloov pauv ntau yam lag luam vim nws cov khoom tshwj xeeb. Nws txhim kho qhov zoo thiab ruaj khov ntawm cov xim pleev xim, cements, phab ntsa putties, thiab cov neeg sawv cev khaws dej. Nws yog ib qho khoom xyaw tseem ceeb thiab ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom zoo uas ua tau raws li cov neeg siv khoom xav tau.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm HEC yog tias nws yog tus phooj ywg ib puag ncig thiab tsis muaj tshuaj lom. Nws tsis ua rau ib puag ncig puas tsuaj lossis ua rau muaj kev pheej hmoo rau tib neeg lossis tsiaj txhu. Tsis tas li ntawd, nws yooj yim rau kev tuav thiab thauj, ua rau nws zoo tagnrho rau kev siv hauv kev lag luam loj.
Yav tom ntej ntawm HEC yog qhov ci ntsa iab thiab nws yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam. Raws li qhov kev thov rau cov khoom zoo nce ntxiv, qhov kev thov rau HEC kuj tseem yuav nce ntxiv, tsav tsheb ntxiv kev tsim kho tshiab thiab kev txhim kho hauv daim teb no.
Kev siv HEC tau hloov pauv ntau yam lag luam vim nws cov yam ntxwv tshwj xeeb. Nws txhim kho qhov zoo thiab ruaj khov ntawm cov xim pleev xim, cements, phab ntsa putties, thiab cov neeg sawv cev khaws dej. Raws li qhov kev thov rau cov khoom zoo txuas ntxiv mus, qhov kev thov rau HEC kuj tseem yuav nce ntxiv, tsav tsheb ntxiv kev tsim kho tshiab thiab kev txhim kho hauv daim teb no. HEC yog ib qho khoom xyaw tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom zoo uas ua tau raws li cov neeg siv khoom xav tau.
Lub sijhawm tshaj tawm: Lub Kaum Hli-17-2023