Gypsum board nrog hluav taws kub, noo noo-pov thawj, ib puag ncig tiv thaiv, siab zog, suab rwb thaiv tsev, tiv thaiv tshav kub, plasticity thiab lwm yam khoom zoo heev.
Cov no los ntawm nws cov khoom siv muaj zog, gypsum, tau piav qhia saum toj no raws li cov ntxhia hauv monoclinic, hydrate uas nws cov tshuaj tseem ceeb yog calcium sulfate (CaSO4). Gypsum yog cov khoom siv dav siv hauv kev lag luam thiab kev tsim kho. Yuav siv tau rau cement retarder, gypsum tsev cov khoom, qauv tsim, kev kho mob zaub mov additives, sulfuric acid ntau lawm, ntawv muab tub lim, xim muab tub lim, thiab lwm yam. Lub microporous qauv ntawm gypsum thiab nws cov khoom thiab cov cua kub ntawm cov dej, kom lawv muaj suab zoo heev. rwb thaiv tsev, rwb thaiv tsev kub thiab hluav taws kev ua haujlwm. Vim tias nws cov qauv microporous, yog li cov khoom siv hauv tsev gesso zoo ib yam li cov av nplaum phab ntsa, kuj muaj cov pa ua pa zoo heev, thaum huab cua noo loj, gypsum cov khoom tsis nqus dej thiab noo noo, huab cua noo, gypsum khoom sab nraud tsis tso dej noo thiab ziab, qhov kev ua haujlwm tshwj xeeb yog txhua yam khoom siv hauv tsev tsis muaj. Gypsum cov khoom ua los ntawm gypsum tuaj yeem siv los ua cov khoom siv raw rau kev rov ua dua tshiab; Txawm hais tias nws tsis rov siv dua, nws tuaj yeem hloov mus rau hauv av raws li cov khib nyiab, tsis muaj kev cuam tshuam ib puag ncig.
