Cellulose ether HPMC nyob rau hauv cov cement mortar thiab gypsum raws li slurry, feem ntau ua si lub luag hauj lwm ntawm dej tuav thiab thickening, tuaj yeem txhim kho qhov adhesion thiab sag kuj ntawm slurry.
Cov huab cua kub, qhov kub thiab cua siab npaum li cas tuaj yeem cuam tshuam tus nqi evaporation ntawm cov dej hauv cov cement mortar thiab gypsum raws li cov khoom.Nyob rau lub caij sib txawv, cov dej khaws cia ntawm slurry tuaj yeem hloov kho los ntawm kev nce lossis txo tus nqi ntawm HPMC.Hauv kev tsim kho ntawm lub caij ntuj sov kub, txhawm rau ua tiav cov txiaj ntsig ntawm kev txuag dej, nws yog ib qho tsim nyog yuav tsum ntxiv cov khoom HPMC kom muaj nuj nqis txaus raws li cov qauv.Txwv tsis pub, yuav muaj dej tsis txaus, txo lub zog, tawg, hollow nruas thiab los ntawm kev ziab sai heev, thiab lwm yam teeb meem zoo.Raws li qhov kub thiab txias qis, tus nqi ntawm HPMC tuaj yeem txo qis, thiab tib cov dej tuav tau tuaj yeem ua tiav.
Muaj qee qhov sib txawv thiab yog vim li cas rau cov dej tuav cov nyhuv tib yam ntawm cov khoom ntxiv HPMC.HPMC series cov khoom lag luam zoo tuaj yeem daws qhov teeb meem ntawm cov dej tuav hauv qhov kub thiab txias.Nyob rau hauv lub caij kub kub, tshwj xeeb tshaj yog nyob rau hauv kub thiab qhuav thiab nyias txheej tsim nyob rau hauv tshav ntuj sab, zoo HPMC yog xav tau los txhim kho cov dej tuav ntawm slurry.High quality HPMC, nws cov methoxy thiab hydroxypropyl pawg raws li cellulose molecular saw uniform tis, tuaj yeem txhim kho hydroxyl thiab ether daim ntawv cog lus ntawm oxygen atoms thiab dej koom haum hydrogen bond peev xwm, ua dej dawb rau hauv dej ua ke.Thiab zoo dispersed nyob rau hauv lub slurry thiab qhwv tag nrho cov khoom hais, hydration cov tshuaj tiv thaiv nrog inorganic cementing cov ntaub ntawv, thiab tsim ib txheej ntawm wetting zaj duab xis, dej nyob rau hauv lub hauv paus maj mam tso tawm rau lub sij hawm ntev, thiaj li mus zoo tswj cov evaporation ntawm dej tshwm sim. los ntawm huab cua kub, kom ua tiav cov dej khaws cia siab.
Kev tuav dej ntawm HPMC cov khoom feem ntau cuam tshuam los ntawm cov hauv qab no:
1. HPMC uniformity: Uniform cov tshuaj tiv thaiv ntawm HPMC, methoxy, hydroxypropoxy uniform distribution, siab dej tuav.
2 HPMC thermal gel kub: Kub gel muaj siab
qhov kub thiab txias khaws cia tus nqi siab;txwv tsis pub, nws muaj tsawg tus nqi tuav dej.
3. Lub viscosity ntawm HPMC: Thaum lub viscosity ntawm HPMC nce, cov dej tuav tus nqi kuj nce.Thaum lub
viscosity nce mus txog ib qho degree, qhov nce ntawm cov dej tuav tus nqi yuav maj mam.
4. HPMC cov ntsiab lus: HPMC ntau ntxiv, qhov siab dua cov dej tuav thiab cov dej tuav tau zoo dua.Nyob rau hauv qhov ntau ntawm 0.25-0.6%, qhov kev txuag dej tau nce sai nrog qhov nce ntawm cov nyiaj ntxiv.Thaum cov nyiaj ntxiv tau nce ntxiv, qhov sib txawv ntawm qhov nce ntawm kev txuag dej tau qeeb.
Post lub sij hawm: Lub Xya hli ntuj-29-2022