Hydroxyethylcellulose (HEC) yog cov dej-soluble polymer dav siv nyob rau hauv ntau yam lag luam nrog rau kev tsim kho, khoom noj khoom haus, tshuaj thiab khoom siv kho mob. Nws yog ib yam khoom ntuj tsim, biodegradable tau los ntawm cellulose, carbohydrate nyob rau hauv cov nroj tsuag cell phab ntsa. Hauv cov txheej txheem pob zeb ntuj, HEC ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm thiab kev zoo nkauj ntawm cov txheej.
Ntuj pob zeb txheej yog siv los tiv thaiv thiab txhim kho cov tsos ntawm cov pob zeb ntuj xws li marble, granite thiab limestone. Cov txheej txheem no muab cov txheej txheem tiv thaiv huab cua, corrosion, staining thiab khawb. Lawv kuj tuaj yeem txhim kho cov xim, luster thiab kev ntxhib los mos ntawm lub pob zeb, yog li txhim kho nws txoj kev zoo nkauj.
Txawm li cas los xij, natural stone coatings fim ob peb txoj kev sib tw nrog kev thov, adhesion thiab kev ua tau zoo. Cov txheej txheem yuav tsum ua kom ruaj khov rau ntawm pob zeb saum npoo yam tsis muaj kev puas tsuaj rau lub pob zeb lossis cuam tshuam nws qhov kev ntxhib los mos. Lawv kuj yuav tsum tiv taus UV hluav taws xob thiab lwm yam kev ntxhov siab ib puag ncig uas tuaj yeem ua rau degradation lossis discoloration dhau sijhawm. Tsis tas li ntawd, cov xim yuav tsum yooj yim rau kev thov, qhuav sai, thiab tsis yooj yim rau tawg los yog tev.
Txhawm rau daws cov teeb meem no, cov txheej txheem pob zeb ntuj feem ntau suav nrog ntau yam khoom ntxiv thiab cov khoom ntxiv los txhim kho lawv cov khoom. HEC yog ib qho tshuaj ntxiv uas feem ntau siv rau hauv cov txheej txheem no vim nws cov khoom tshwj xeeb.
Lub luag haujlwm tseem ceeb ntawm HEC hauv cov txheej txheem pob zeb ntuj yog los ua cov thickener, binder thiab rheology modifier. HEC molecules muaj cov qauv kab ntev ntev uas nqus dej thiab tsim cov khoom zoo li gel. Cov tshuaj zoo li gel no ua rau cov xim pleev xim, ua rau lawv muaj kuab heev thiab yooj yim rau kev thov. Tsis tas li ntawd, cov khoom zoo li gel tuaj yeem muab qhov ruaj khov thiab tsis sib xws ntawm cov txheej txheem txheej txheej, tiv thaiv kev sib cais lossis sib cais.
HEC ua raws li ib tug binder los txhim kho cov adhesion ntawm txheej rau pob zeb nto. HEC molecules tuaj yeem sib txuas nrog pob zeb nto thiab txheej txheej los tsim cov ntawv cog lus muaj zog thiab kav ntev. Cov ntawv cog lus no tiv thaiv shearing, spalling los yog delamination nyob rau hauv kev ntxhov siab, ua kom lub sij hawm ntev adhesion thiab kev tiv thaiv ntawm pob zeb nto.
HEC kuj ua raws li kev hloov kho rheology, tswj cov dej ntws thiab viscosity ntawm txheej. Los ntawm kev kho tus nqi thiab hom HEC, qhov viscosity thiab thixotropy ntawm cov txheej txheem tuaj yeem raug kho kom haum rau txoj kev thov thiab kev ua haujlwm siab. Thixotropy yog cov cuab yeej ntawm cov xim uas ntws tau yooj yim thaum raug kev nyuaj siab, xws li thaum sib tov lossis thov, tab sis thickens sai thaum lub shear stress raug tshem tawm. Cov cuab yeej no txhim kho kev sib kis thiab kev tiv thaiv ntawm cov txheej thaum txo qis los yog sagging.
Ntxiv rau nws txoj haujlwm ua haujlwm, HEC tuaj yeem txhim kho cov khoom zoo nkauj ntawm cov pob zeb ntuj. HEC tuaj yeem txhim kho cov xim, luster thiab kev ntxhib los mos ntawm txheej los ntawm kev tsim cov yeeb yaj kiab du thiab zoo ib yam ntawm cov pob zeb nto. Cov yeeb yaj kiab kuj tseem muab cov dej thiab stain tsis kam, tiv thaiv dej los yog lwm yam kua los ntawm discoloring los yog nkag mus rau hauv pob zeb nto.
HEC tseem yog cov khoom siv ntuj tsim thiab ib puag ncig zoo uas muaj kev nyab xeeb siv thiab pov tseg. Nws yog biodegradable thiab tsis tsim muaj teeb meem los ntawm cov khoom lossis emissions thaum tsim khoom lossis siv.
Hauv cov ntsiab lus, hydroxyethyl cellulose (HEC) ua lub luag haujlwm tseem ceeb los ntawm kev txhim kho kev ua haujlwm thiab kev zoo nkauj ntawm cov pob zeb ntuj. HEC ua raws li cov thickener, binder thiab rheology hloov kho, txhim kho cov viscosity, adhesion thiab ntws ntawm txheej. HEC kuj tseem tuaj yeem txhim kho cov xim, gloss thiab kev ntxhib los mos ntawm cov coatings thiab muab cov dej thiab stain tsis kam. Tsis tas li ntawd, HEC yog cov khoom siv ntuj tsim, biodegradable uas muaj kev nyab xeeb thiab zoo ib puag ncig.
Post lub sij hawm: Sep-12-2023