Hydroxyethyl cellulose, tseem hu ua HPMC, yog ib qho uas tsis yog-ionic cellulose ether uas yog dav siv nyob rau hauv ntau yam lag luam rau nws thickening, dej tuav, stability thiab lwm yam khoom. Feem ntau siv rau cov khoom qhuav sib tov los txhim kho cov dej tsis kam thiab ua tiav cov nyhuv thickening zoo dua. Nov yog yuav ua li cas siv HPMC kom zoo thiab qee qhov kev ceev faj kom nco ntsoov.
Thaum siv HPMC hauv kev sib xyaw cov khoom qhuav, nws yog ib qho tseem ceeb kom nkag siab txog cov khoom ntawm cov khoom thiab nws cuam tshuam nrog lwm cov khoom xyaw. HPMC yog cov hmoov dawb lossis dawb dawb uas yog soluble hauv dej txias tab sis insoluble hauv dej kub. Nws kuj tau sib xws nrog ntau cov khoom siv organic thiab inorganic, ua rau nws muaj ntau yam khoom siv tsim nyog rau ntau yam kev siv.
Txhawm rau siv HPMC rau kev sib xyaw qhuav, ua ntej ntsuas qhov xav tau ntawm HPMC thiab lwm cov khoom xyaw qhuav. Nws yog ib qho tseem ceeb kom sib xyaw HPMC kom huv si nrog cov ntaub ntawv qhuav ua ntej ntxiv cov kua. Qhov no yuav ua kom ntseeg tau tias HPMC tau muab faib ua tus sib npaug thoob plaws qhov sib xyaw thiab ua kom cov tshuaj thickens thaum ntxiv dej.
Thaum HPMC tov nrog dej, nws raug nquahu kom siv dej txias lossis chav dej kub los pab txhawb kev sib cais ntawm HPMC. Ntxiv HPMC rau cov dej sov los yog dej kub yuav ua rau clumping thiab tsis sib xws. Nws tseem yog ib qho tseem ceeb kom sib tov HPMC thiab dej maj mam thiab kom huv si kom tsis txhob clumping thiab xyuas kom meej ib tug du thiab zoo ib yam.
Ib qho txiaj ntsig tseem ceeb ntawm kev siv HPMC hauv kev sib xyaw cov khoom qhuav yog nws lub peev xwm los txhim kho cov dej tsis kam. Thaum HPMC ntxiv rau qhov sib tov, nws tsim cov txheej txheem tiv thaiv ib puag ncig cov khoom, pab tiv thaiv dej thiab tiv thaiv kom tsis txhob ya raws los ntawm kev nkag mus rau hauv cov khoom. Qhov no yog qhov tshwj xeeb tshaj yog siv rau hauv cov ntawv thov uas cov dej tsis kam yog qhov tseem ceeb, xws li cov nplais nplaum, grouts thiab cement-based coatings.
Ntxiv nrog rau nws cov khoom tiv thaiv dej, HPMC kuj ua raws li tus neeg sawv cev thickening hauv cov khoom sib tov qhuav. Nws tsub kom lub viscosity ntawm cov khoom sib tov, uas yog ib qho tseem ceeb rau kev ua tiav qhov xav tau kev ntxhib los mos thiab sib xws ntawm cov khoom kawg. Qhov no ua rau HPMC yog cov khoom xyaw zoo tshaj plaws nyob rau hauv ntau yam khoom siv hauv tsev, xim thiab txheej txheej uas yuav tsum tau ua kom tuab rau kev siv thiab kev ua tau zoo.
Thaum HPMC muaj ntau yam txiaj ntsig rau kev sib xyaw cov khoom qhuav, muaj qee qhov kev ceev faj kom nco ntsoov thaum ua haujlwm nrog cov khoom xyaw no. Nws yog ib qho tseem ceeb uas yuav tsum tau siv cov tshuaj HPMC kom raug raws li qhov ntau dhau yuav ua rau cov tshuaj sib xyaw ua kua los yog ntau dua. Nws tseem yog ib qho tseem ceeb kom sib tov HPMC kom huv si thiab xyuas kom meej tias nws yog sib npaug zos thoob plaws qhov sib tov kom tsis txhob clumping thiab uneven thickening.
Tsis tas li ntawd, nws yog ib qho tseem ceeb uas yuav tsum khaws HPMC nyob rau hauv qhov chaw txias, qhuav kom deb ntawm lub hnub ncaj qha thiab noo noo los tiv thaiv cov dej ntxov ntxov thiab degradation ntawm cov khoom. Kev khaws cia thiab tuav ntawm HPMC yuav ua kom nws muaj txiaj ntsig thiab txuas ntxiv nws lub txee lub neej.
Hauv cov ntsiab lus, HPMC yog cov khoom muaj txiaj ntsig zoo hauv cov khoom siv qhuav sib xyaw, muab cov dej ua kom zoo dua qub thiab cov khoom ua kom tuab. Los ntawm kev ua raws li kev siv thiab kev ceev faj ntawm HPMC, koj tuaj yeem txhim kho kev ua tau zoo thiab zoo ntawm ntau yam khoom thiab ua tiav cov txiaj ntsig xav tau hauv koj daim ntawv thov.
Post lub sij hawm: Dec-05-2023