HPMC rau GYPSUM

HPMC, lossis Hydroxypropyl Methylcellulose, yog cov khoom siv ntau yam uas tau siv dav hauv kev tsim kho kev lag luam. Ib qho ntawm nws cov kev siv ntau tshaj plaws yog nyob rau hauv kev tsim cov khoom gypsum. Gypsum yog ib qho ntxhia tshwm sim uas feem ntau siv hauv tsev cov ntaub ntawv xws li plaster thiab phab ntsa ntub dej. HPMC feem ntau ntxiv rau gypsum cov khoom los txhim kho lawv cov kev ua tau zoo, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kev ua hauj lwm, adhesion, thiab dej tuav.

Muaj ntau ntau hom gypsum khoom uas yuav tau txais txiaj ntsig los ntawm kev sib ntxiv ntawm HPMC. Cov no suav nrog:

Plaster: Plaster yog cov khoom siv hauv tsev uas yog tsim los ntawm gypsum hmoov thiab dej. HPMC tuaj yeem muab ntxiv rau plaster los txhim kho nws cov haujlwm ua haujlwm thiab adhesion. Nws tseem tuaj yeem pab txo qis qis thiab tawg thaum lub sijhawm ziab.

Joint compound: Joint compound yog ib hom khoom gypsum uas yog siv los sau cov khoob ntawm cov nplooj ntawv ntawm phab ntsa ntub dej. HPMC tuaj yeem muab ntxiv rau qhov sib koom ua ke txhawm rau txhim kho nws txoj haujlwm ua haujlwm thiab adhesion. Nws tseem tuaj yeem pab txo qis qis thiab tawg.

Self-leveling compounds: Self-leveling compounds yog siv rau theem tsis sib xws hauv pem teb los yog tsim ib tug du nto rau lwm yam ntaub ntawv flooring. HPMC tuaj yeem muab ntxiv rau qhov sib xyaw ua ke ntawm tus kheej txhawm rau txhim kho lawv txoj haujlwm ua haujlwm thiab tuav dej. Nws tseem tuaj yeem pab txo qis qis thiab tawg thaum lub sijhawm ziab.

Gypsum board: Gypsum board, tseem hu ua drywall, yog ib qho khoom siv hauv tsev uas yog tsim los ntawm gypsum plaster sandwiched ntawm ob nplooj ntawv. HPMC tuaj yeem muab ntxiv rau gypsum plaster los txhim kho nws cov haujlwm ua haujlwm thiab ua kom zoo.

Cov khoom tshwj xeeb ntawm HPMC tuaj yeem sib txawv raws li cov khoom lag luam thiab cov chaw tsim khoom, tab sis feem ntau, nws muaj cov yam ntxwv hauv qab no:

Kev tuav dej siab: HPMC yog cov khoom siv hydrophilic, uas txhais tau hais tias nws muaj kev sib raug zoo rau dej. Cov cuab yeej no pab txhim kho kev ua haujlwm ntawm cov khoom siv gypsum, vim nws pab kom cov dej sib tov sib xyaw thiab yooj yim sib kis.

Kev muaj peev xwm ua yeeb yaj kiab zoo: HPMC tuaj yeem tsim cov yeeb yaj kiab nyias ntawm cov khoom siv gypsum thaum nws qhuav, uas yuav pab txhim kho nws lub zog thiab ua haujlwm ntev.

Txhim kho adhesion: HPMC tuaj yeem txhim kho qhov adhesion ntawm cov khoom gypsum mus rau hauv qab substrate, pab tsim kom muaj zog, ruaj khov nto.

Txo cov shrinkage thiab cracking: HPMC tuaj yeem pab txo qis qis thiab tawg uas tshwm sim thaum lub sij hawm ziab, uas tuaj yeem ua rau lub ntsej muag ntau dua thiab du.

Tsis muaj tshuaj lom thiab ib puag ncig tus phooj ywg: HPMC yog cov khoom tsis muaj tshuaj lom, ib puag ncig tus phooj ywg uas muaj kev nyab xeeb rau kev siv hauv kev tsim kho.

Thaum siv HPMC hauv cov khoom siv gypsum, nws yog ib qho tseem ceeb uas yuav tsum ua raws li cov chaw tsim khoom cov lus qhia ua tib zoo. Cov sib tov yuav tsum tau npaj raws li qhov pom zoo ntawm cov dej-rau-hmoov piv, thiab yuav tsum tau muab sib xyaw kom huv si kom paub meej tias HPMC tau sib npaug sib npaug thoob plaws qhov sib xyaw.

Thaum cov khoom gypsum tau siv rau saum npoo, nws yuav tsum tau smoothed thiab leveled siv trowel los yog lwm yam cuab yeej. Nws yog ib qho tseem ceeb kom ua hauj lwm sai sai, raws li cov khoom yuav pib teem nyob rau hauv ib tug luv luv lub sij hawm.

Tom qab cov khoom tau thov, nws yuav tsum tau muab cia kom qhuav rau lub sijhawm pom zoo ua ntej ua haujlwm ntxiv rau ntawm qhov chaw. Qhov no yuav pab xyuas kom meej tias qhov chaw tau kho tau zoo thiab npaj rau kev siv.

Zuag qhia tag nrho, HPMC yog cov khoom tseem ceeb hauv kev tsim cov khoom gypsum. Nws cov khoom tshwj xeeb pab txhim kho kev ua haujlwm ntawm cov ntaub ntawv no, ua rau lawv yooj yim rau kev ua haujlwm nrog thiab ua haujlwm ntev dua. Los ntawm kev siv cov khoom siv gypsum uas muaj HPMC, cov kws tshaj lij kev tsim kho tuaj yeem tsim cov npoo du, uas haum rau ntau yam kev siv.