HPMC (HydroxyPropyyl methylcellulose)yog ib qho khoom siv dej-soluble polymer uas tau siv dav hauv cov khoom siv canish, tshwj xeeb yog nyob rau hauv kev tsim cov khoom xyaw qhuav, gypsum thiab lwm yam khoom siv hauv tsev.
1. Txhim kho kev ua haujlwm thiab kev ua haujlwm
HPMC muaj cov nyhuv zoo heev thiab tuaj yeem txhim kho fluidity thiab viscosity ntawm cov khoom noj kom haum rau kev lag luam. Tom qab ntxiv HPMC, cov khoom ua haujlwm ntawm cov ntaub ntawv xws li cug ua haujlwm tau zoo, thiab lwm yam, txo cov txheej txheem kev tsim kho, thiab txhim kho kev txhim kho zoo heev thiab ua tau zoo.
2. Txuas cov sij hawm qhib thiab txhim kho kev siv tau zoo
HPMC tuaj yeem ncua lub sijhawm ua haujlwm ntawm cov khoom noj khoom haus cov cement, tso cai rau cov neeg ua haujlwm siv sijhawm ntev dua thaum lub sijhawm tsim kho. Cov kev siv tsiaj tom qab qhib qhib cov ntaub ntawv tso tseg (piv txwv li lub sijhawm cov khoom siv tseem tuaj yeem raug tswj ua ntej ua kom tawv ncauj) yog txuas ntxiv. Rau cov haujlwm tsim loj lossis kev tsim kho cov qauv ntawm cov txheej txheem qhib tau zoo txo cov khoom siv nyuaj thiab poob los ntawm kev ua kom zoo rau cov ntaub ntawv, tshwj xeeb tshaj yog nyob hauv ib puag ncig kub.
3. Txhim Kho Adhesion thiab Dej Kuj
HPMC can enhance the adhesion of cement-based products, allowing them to better adhere to the substrate and enhance the bonding strength between different materials. Hauv cov ntawv thov xws li pobzeb nplaum thiab gypsum, HPMC tuaj yeem txhim kho cov nplaum rau hauv paus nto thiab txo qhov kev pheej hmoo ntawm kev poob ntawm cov vuas, gypsum laug cam thiab lwm yam ntaub ntawv. Tsis tas li ntawd, HPMC muaj cov dej tsis zoo, uas tuaj yeem txhim kho cov kev cuam tshuam ntawm cov khoom siv noo noo ntawm cov tshuaj xis, thiab txuas ntxiv cov kev pabcuam lub neej ntawm cov ntaub ntawv.
4. Txhim kho kev tawg
Kev sivHPMCNyob rau hauv cov khoom noj khoom haus MAAs-basent pab txhim kho cov kab nrib pleb, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kom qhuav shrinkage. Cesent kab ntawv yog nquag rau tawg thaum lub sijhawm evaporation txheej ntawm dej. HPMC tuaj yeem hloov kho cov dej evaporate tus nqi ntawm cov khoom noj khoom haus cov cement los txo qhov tshwm sim ntawm cov kab nrib pleb. Los ntawm kev hloov cov txheej txheem hydration ntawm cov khoom siv cement, HPMC tuaj yeem hloov kho qhov tsis zoo, yog li txhim kho qhov tsis txaus ntseeg ntawm cov khoom.
5. Txhim kho los tiv thaiv kev ua npuas ncauj thiab ruaj khov
HPMC tuaj yeem tswj cov ntsiab lus npuas hauv cov khoom noj khoom haus cov khoom noj thiab txhim kho lawv cov khoom ua kom zoo nkauj. Qhov tshwm sim ntawm cov npuas hauv cov khoom noj-raws yuav cuam tshuam rau lub zog, kev cog lus thiab tsos ntawm cov khoom. Qhov kev sib txuas ntawm HPMC tuaj yeem siv cov qauv ntawm cov slurry thiab txo ntau tiam ntawm bubbles, yog li txhim kho cov kev cog lus thiab tag nrho cov khoom lag luam.
6. Txhim kho saum toj du thiab tsos
Nyob rau hauv ntau cov khoom siv ua kom zoo, nto du thiab cov tsos zoo muaj qhov cuam tshuam tseem ceeb rau kev sib tw ua lag luam ntawm cov khoom kawg. HPMC tuaj yeem txhim kho cov kua txiv qaub ntawm cov khoom khov zoo, ua rau lawv cov chaw smoother thiab smorgbles thaum tsim kho, yog li kev txhim kho cov tsos zoo ntawm cov khoom lag luam. Tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov xws li txheej ci thiab cov nplaum nplaum, HPMC tuaj yeem ua kom ntseeg tau tias qhov saum npoo tsis muaj txiaj ntsig zoo thiab ua tiav qhov pom tau zoo dua.
7. Txhim kho cov kev kho thiab versatility
HPMC yog cov khoom siv uas tuaj yeem hloov kho rau cov kev xav tau sib txawv. Los ntawm kev hloov nws cov qauv molecular (xws li cov qib sib txawv ntawm HydroxyPropation, solubilation, solubilation, etcilation, yog li muab cov khoom siv hloov rau ntau hom Maas-based khoom. daws. Piv txwv li, rau kev ua tau zoo pobzeb cov nplaum thiab kho cov qauv sib txawv, cov qauv sib txawv ntawm HPMC tuaj yeem siv los ua kom tau raws kev tsim kho kev tsim kho.
8. Kev txhawb nqa ib puag ncig ib puag ncig thiab kev txuag hluav taws xob
Raws li cov khoom siv polymer, HPMC feem ntau tsis muaj tshuaj lom, tsis muaj mob thiab ua tau raws li kev tiv thaiv ib puag ncig. Siv hpmc cov khoom noj khoom haus cov cement tsis yog tsuas txhim kho kev ua haujlwm, tab sis kuj txo cov kev cuam tshuam tsis zoo rau ib puag ncig. Tsis tas li ntawd, kev sib ntxiv ntawm HPMC tuaj yeem txo qis cov Maas, txuag lub zog, thiab cov khoom lag luam kom muaj kev hloov pauv mus ncua thiab txo tus nqi kho.
9. Txhim kho cov hluav taws xob ruaj khov
HPMC muaj qee qhov hluav taws xob ruaj khov thiab tuaj yeem tswj tau cov kev ua tau ruaj khov ntawm qhov kub siab dua. Hauv qee cov ntawv thov tshwj xeeb, xws li cov khoom noj khoom haus tshwj xeeb hauv cov khoom siv hluav taws xob siab, kom tau cov khoom lag luam zoo dua qub thiab ua kom muaj kev tsim kho kom zoo.
10. Txhim kho fellity thiab kev sib dhos
HPMC tuaj yeem ua cov khoom xyaw hauv cov khoom noj kom zoo dua tusyees faib thiab txo qhov kev sib txawv los ntawm kev tsis sib xws. Nws txhim kho cov fluidy ntawm slurry thiab zam cov tsos ntawm clumps lossis particle tswm, yog li ua kom muaj kev sib xyaw sib xyaw thiab sib xyaw thoob plaws cov khoom sib xyaw.
Raws li kev ntxiv ntxiv rau cov khoom tso cai ua ke;HPMCTsis tuaj yeem tsuas txhim kho qhov ua haujlwm, kev ua yeeb yam, tawg tsis kam thiab cov khoom lag luam zoo thiab tseem txhim kho kev ua haujlwm muaj txiaj ntsig ntawm cov khoom. Nws cov khoom tau zoo ntawm thickening, retarding solidification, anti-foaming thiab kev tswj hwm funmc ib qho tsis tseem ceeb hauv cov ntaub ntawv hauv tsev niaj hnub no. Raws li kev tsim kho kev lag luam qhov kev thov rau cov ntaub ntawv ua tau zoo nce, kev thov ntawm HPMC hauv cov khoom noj khoom haus cov cement yuav dhau los.
Lub Sijhawm Post: Dec-07-2024