Gypsum Plaster yog dab tsi?

Gypsum tes plaster yog cov khoom siv hauv tsev siv rau sab hauv phab ntsa tiav. Nws yog kev sib xyaw ntawm gypsum, aggregates, thiab lwm yam khoom siv ntxiv, thiab yog siv los ntawm cov neeg ua haujlwm txawj siv cov cuab yeej siv tes. Lub plaster yog troweled mus rau saum npoo ntawm phab ntsa, tsim ib tug du thiab txawm tiav uas yuav tsum tau sab laug raws li yog los yog pleev xim rau.

Gypsum, lub hauv paus muaj nyob rau hauv gypsum tes plaster, yog ib txwm tshwm sim ntxhia uas yog mined los ntawm deposits nyob rau hauv lub ntiaj teb. Nws yog cov khoom siv mos thiab dawb uas yooj yim pulverized rau hauv cov hmoov. Thaum sib tov nrog dej, gypsum tsim ib qho muab tshuaj txhuam uas hardens rau hauv cov khoom siv. Cov cuab yeej no ua rau nws muaj qhov zoo tshaj plaws rau plastering.

Aggregates, xws li xuab zeb los yog perlite, yog ntxiv rau gypsum plaster sib tov los txhim kho nws cov hauj lwm, txo shrinkage thiab cracking, thiab txhim kho nws thermal thiab acoustic rwb thaiv tsev zog. Lwm yam additives, xws li cellulose fibers los yog cua-entraining agents, kuj yuav muab ntxiv los txhim kho lub plaster lub zog thiab durability.

Gypsum tes plaster yog ntau yam khoom siv uas tuaj yeem siv rau ntau yam ntawm phab ntsa sab hauv. Nws tuaj yeem siv rau txhua qhov chaw huv, qhuav, thiab suab nrov, suav nrog pob zeb, masonry, lossis plasterboard. Lub plaster tuaj yeem siv los tsim kom zoo nkauj los yog textured tiav, nyob ntawm seb qhov xav tau.

Ib qho ntawm qhov zoo ntawm gypsum tes plaster yog nws cov khoom hluav taws kub-resistant. Gypsum yog ib yam khoom siv hluav taws kub uas tuaj yeem pab tiv thaiv kev sib kis ntawm hluav taws thaum muaj hluav taws. Qhov no ua rau nws yog qhov kev xaiv nrov rau kev lag luam thiab pej xeem cov tsev, qhov twg kev nyab xeeb hluav taws yog ib qho kev txhawj xeeb.

Lwm qhov zoo dua ntawm gypsum tes plaster yog nws yooj yim ntawm daim ntawv thov. Tsis zoo li lub tshuab siv plasters, uas xav tau cov cuab yeej tshwj xeeb, gypsum tes plaster tuaj yeem siv tau manually siv cov cuab yeej tes yooj yim. Qhov no ua rau nws muaj txiaj ntsig zoo rau cov haujlwm me me lossis thaj chaw uas nyuaj rau kev nkag mus.

Cellulose ether, ntawm qhov tod tes, yog cov dej-soluble polymer muab los ntawm ntuj cellulose. Nws yog feem ntau siv hauv gypsum tes plaster ua ib qho ntxiv los txhim kho cov khoom siv thiab ua haujlwm.

Cellulose ether yog ntxiv rau gypsum plaster mix los txhim kho nws cov khoom xws li dej tuav, adhesion, thiab ua haujlwm. Nws ua raws li cov thickener, tso cai rau cov plaster kom kis tau yooj yim thiab sib npaug ntawm qhov chaw, txo kev tawg thiab txhim kho nws tag nrho cov tsos. Nws kuj ua raws li ib tug binder, tuav cov sib tov ua ke thiab txhim kho nws adhesion rau saum npoo.

Cov dej tuav cov khoom ntawm cellulose ether yog qhov tseem ceeb tshwj xeeb hauv gypsum tes plaster. Gypsum plaster yuav tsum muaj qee qhov dej noo kom ua tiav qhov chaw tsim nyog thiab tawv. Yog tsis muaj kev tuav dej kom zoo, plaster tuaj yeem qhuav sai heev, ua rau tawg, shrinkage, thiab lwm yam tsis xws luag. Cellulose ether pab khaws cov dej hauv cov plaster sib tov, ua kom cov txheej txheem kom qhuav thiab ua kom cov plaster teeb kom zoo.

Ntxiv nrog rau cov dej tuav thiab thickening, cellulose ether tuaj yeem txhim kho cov thermal thiab acoustic rwb thaiv tsev ntawm gypsum tes plaster. Los ntawm kev ntxiv cov cellulose fibers rau qhov sib tov, plaster tuaj yeem muab lub suab zoo dua thiab kev rwb thaiv tsev, txhim kho tag nrho kev nplij siab thiab lub zog ntawm lub tsev.

Kev xaiv thiab tus nqi ntawm cellulose ether ntxiv rau gypsum tes plaster tuaj yeem cuam tshuam rau nws qhov kev ua tau zoo thiab kev ua haujlwm. Muaj ntau hom cellulose ether, xws li hydroxyethyl cellulose (HEC), methyl cellulose (MC), thiab carboxymethyl cellulose (CMC), txhua tus muaj nws cov khoom tshwj xeeb thiab cov yam ntxwv. Hom thiab tus nqi ntawm cellulose ether ntxiv rau plaster mix yuav tsum tau ua tib zoo xaiv raws li cov kev cai tshwj xeeb ntawm qhov project.

Hauv cov ntsiab lus, gypsum tes plaster yog cov khoom siv hauv tsev siv rau sab hauv phab ntsa tiav. Nws yog kev sib xyaw ntawm gypsum, aggregates, thiab lwm yam khoom siv ntxiv, thiab yog siv los ntawm cov neeg ua haujlwm txawj siv cov cuab yeej siv tes. Gypsum tes plaster yog hluav taws-resistant, yooj yim rau kev thov, thiab tuaj yeem siv los tsim ntau yam kev ua tiav.