HPMC (Hydroxypropyl Methyl Cellulose) yog ib qho cellulose ether uas tau txais koob meej hauv kev tsim kho kev lag luam raws li kev ntxiv rau putty. Skim lub tsho tiv no yog daim ntawv thov ntawm txheej nyias ntawm cov khoom cementitious tshaj qhov ntxhib saum npoo kom du nws tawm thiab tsim kom muaj ntau qhov chaw. Ntawm no peb tshawb txog cov txiaj ntsig ntawm kev siv HPMC hauv clearcoats.
Ua ntej, HPMC ua raws li cov tshuaj humectant, uas txhais tau hais tias nws pab kom cov skim txheej moist. Qhov no yog ib qho tseem ceeb vim hais tias yog cov khoom dries sai heev, nws yuav tawg los yog shrinkage, ua rau ib tug tsis sib xws nto. Los ntawm kev ncua sij hawm kom qhuav, HPMC tuaj yeem pab xyuas kom cov skim coats qhuav ntau tus sib npaug, ua rau smoother, zoo nkauj dua.
Qhov thib ob, HPMC kuj ua raws li cov thickener, uas txhais tau hais tias nws tuaj yeem pab ua kom cov viscosity ntawm putty. Qhov no yog qhov tshwj xeeb tshaj yog thaum ua haujlwm nrog cov ntaub ntawv nyias lossis cov khoom siv skim-coated, vim nws tuaj yeem pab tiv thaiv cov drips thiab xyuas kom muaj qhov adhesion ntawm cov khoom rau saum npoo. Los ntawm kev ua kom zoo sib xws ntawm cov txheej txheej, HPMC kuj tuaj yeem pab txo qis qhov tshwm sim ntawm cov hnab tshos huab cua 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 kev ua haujlwm ntawm putty. Qhov no yog vim nws ua raws li cov roj nplua nyeem, ua rau nws yooj yim dua los siv cov khoom siv thiab ua kom muaj kev sib faib ntau dua ntawm cov khoom siv thoob plaws qhov chaw. Los ntawm kev txhim kho machinability, HPMC tuaj yeem txuag lub sijhawm thiab kev siv zog thaum lub sijhawm thov, ua rau nws yog qhov kev xaiv nrov rau cov neeg cog lus thiab cov neeg nyiam DIY.
Tsis tas li ntawd, HPMC yog qhov sib xws nrog lwm cov tshuaj ntxiv uas feem ntau siv rau hauv cov kua roj vanish, xws li latex thiab acrylic binders. Qhov no txhais tau tias nws tuaj yeem siv ua ke nrog cov ntaub ntawv no kom ua tiav cov txiaj ntsig tshwj xeeb, xws li txhim kho adhesion lossis dej tsis kam. Los ntawm kev txhim kho tag nrho cov kev ua tau zoo ntawm putties, HPMC tuaj yeem pab txuas ntxiv lub neej ntawm cov khoom tiav thiab txo qhov kev xav tau ntawm cov nqi kho lossis hloov pauv.
Cov txiaj ntsig ib puag ncig ntawm kev siv HPMC kuj tsim nyog hais txog. Raws li ib tug natural polymer muab tau los ntawm cellulose, nws yog biodegradable thiab tsis muaj tshuaj lom, ua rau nws muaj kev nyab xeeb thiab ruaj khov lwm txoj rau hluavtaws additives. Tsis tas li ntawd, vim nws yog dej soluble, tsis muaj kev pheej hmoo ntawm kev paug hauv av los yog lwm yam dej hauv lub sijhawm siv lossis ntxuav.
Nyob rau hauv xaus, HPMC yog ib tug multifunctional thiab npaum putty additive nrog ib tug series ntawm zoo nyob rau hauv cov nqe lus ntawm dej tuav, thickening, tsim, compatibility thiab sustainability. Los ntawm kev koom nrog HPMC rau hauv lawv cov ntaub ntawv skim txheej, cov neeg cog lus thiab DIYers zoo ib yam tuaj yeem ua tau zoo dua, zoo dua qhov chaw thiab txhim kho kev ua haujlwm thiab ua haujlwm ntev.
Post lub sij hawm: Lub Xya hli ntuj-19-2023