HPMC (HydroxyPropy cellulose) yog lub cellulose ether uas tau txais cov kev tsim muaj nyob hauv kev tsim cov kev lag luam ua ib qho kev ntxiv mus rau putty. Skim tsho tiv no yog daim ntawv thov ntawm ib txheej ntawm cov khoom siv ntawm cov khoom siv khov kho ntawm cov nplaim taws kom du thiab tsim ib qho chaw ntau. Ntawm no peb tshawb cov txiaj ntsig ntawm kev siv HPMC hauv Carmoats.
Ua ntej, HPMC ua raws li kev nyiam ua tus neeg nyiam, uas txhais tau tias nws pab ua kom cov skim txheej. Qhov no tseem ceeb vim tias yog cov ntaub ntawv dries sai heev, nws yuav tawg lossis ntsws, ua rau muaj kev tsis ncaj ncees. Los ntawm kev ncua lub sijhawm qhuav, HPMC tuaj yeem pab xyuas kom ntseeg tau tias skim cov tsho tiv no qhuav ntau tusyees, uas ua rau lub ntsej muag zoo nkauj, ua kom zoo nkauj dua.
Thib ob, HPMC kuj ua raws li cov tuab, uas txhais tau tias nws tuaj yeem pab txhawb cov viscosity ntawm lub putty. Qhov no yog qhov tshwj xeeb tshaj yog thaum ua haujlwm nrog nyias lossis dawb skim-coated cov ntaub ntawv, raws li nws tuaj yeem pab tiv thaiv kom tsis txhob muaj kev phom sij thiab ua kom cov khoom nplaum kom raug rau saum npoo. Los ntawm kev ua kom sib xws ntawm cov txheej putty, HPMC kuj tseem tuaj yeem pab txo qis cov kev nyiam ntawm cov hnab ris huab cua ua hauv cov khoom siv, uas tuaj yeem ua rau tawg thiab lwm yam tsis xws luag.
Lwm qhov txiaj ntsig ntawm HPMC yog tias nws tuaj yeem pab txhim kho cov tshuab luam ntawv ntawm kev tso tawm. Qhov no yog vim nws ua raws li cov roj nplua nyeem, ua rau nws siv tau yooj yim rau cov khoom thiab ua kom muaj zog ntau txawm tias cov khoom xa tuaj thoob plaws saum npoo. Los ntawm kev txhim kho machinability, HPMC tuaj yeem txuag lub sijhawm thiab kev siv zog thaum daim ntawv thov, ua rau nws xaiv cov nyiam ua haujlwm thiab DIY txaus siab.
Tsis tas li ntawd, HPMC tau tshaj tawm nrog lwm cov tshuaj ntxiv siv hauv varnishes, xws li looj thiab Acrylic Binders. Qhov no txhais tau tias nws tuaj yeem siv ua ke nrog cov ntaub ntawv no kom ua tiav cov khoom ua tau zoo, xws li txhim kho adhesion lossis dej tsis kam. Los ntawm kev txhim kho cov kev ua tau zoo tag nrho ntawm kev ua tau zoo, HPMC tuaj yeem pab txuas ntxiv lub neej ntawm cov chaw tiav thiab txo qhov xav tau ntawm cov nqi kho lossis hloov pauv.
Cov txiaj ntsig ib puag ncig ntawm kev siv HPMC kuj tsim nyog tau hais txog. Raws li lub ntuj polymer tau los ntawm cellulose, nws yog biodegradable thiab tsis muaj tshuaj lom, ua kom muaj kev nyab xeeb dua rau cov khoom sib ntxiv hluavtaws. Ib qho ntxiv, txij li nws yog dej soluble, tsis muaj kev pheej hmoo ntawm cov dej hauv av lossis lwm yam dej hauv lub sijhawm thov lossis tu.
Hauv kev xaus, HPMC yog qhov ua tau zoo ntau ntau thiab ua tau zoo rau cov txiaj ntsig ntawm cov dej ua ke, tsim kom zoo, kev tsim kho, kev tsim kho thiab muaj kev ruaj khov. Los ntawm kev sib xyaw HPMC mus rau hauv lawv cov ntaub ntawv skimors thiab diyers zoo ib yam tuaj yeem ua tiav cov smoother, ntau cov kev sib txuam thiab txhim kho kev ua haujlwm thiab ua kom muaj txiaj ntsig.
Lub Sijhawm Post: Jul-19-2023