Hydroxypropyl methyl cellulose ee cement iyo gypsum ku salaysan

HPMC Hydroxypropyl methyl celluloseHoobiyaha sibidhka iyo slurry gypsum, inta badan waxay ciyaaraan doorka xajinta biyaha iyo dhumucdooda, waxay si wax ku ool ah u wanaajin karaan adhesion iyo caabbinta slurry.

Heerkulka hawada, heerkulka iyo heerka cadaadiska dabayshu waxay saamayn ku yeelan karaan heerka uumiga biyaha ee hoobiye cement iyo gypsum ku salaysan. Sidaa darteed xilliyo kala duwan, ku darida hydroxypropyl methyl cellulose isla qadarka saameynta biyaha alaabada ayaa leh kala duwanaansho. Dhismaha shubka ah, saamaynta haynta biyaha ee slurry waxaa lagu hagaajin karaa iyadoo la kordhinayo ama la dhimayo tirada HPMC. Haysashada biyaha ee etherka methyl cellulose ee heerkulka sare waa tilmaame muhiim ah oo lagu kala saaro tayada methyl cellulose ether.

Aad u fiicanhydroxypropyl methyl cellulosealaabooyin taxane ah ayaa si wax ku ool ah u xallin kara dhibaatada haynta biyaha ee heerkulka sare. Xilliga heerkulka sare, gaar ahaan meelaha kulul iyo qalalan iyo dhismaha lakabka khafiifka ah ee dhinaca qoraxda, baahida loo qabo tayada sare ee HPMC si loo hagaajiyo haynta biyaha ee slurry; hydroxypropyl methyl cellulose (HPMC), lebbiska waa mid aad u wanaagsan, waa oxygen iyo oksijiin hydroxypropyl kooxaha si siman loo qaybiyey weheliyaan silsilad cellulose ah, hagaajin karaa hydroxyl iyo ether oxygen iyo biyaha ku saabsan awoodda xidhitaan laxiriira muhiimka ah foomka hydrogen, ka dhigi biyo lacag la'aan ah fuuqbaxa, si wax ku ool ah loo xakameeyo cimilada kulul ay sababto qoyaan si uumi biyo sare, A.

Tayada sare ee hydroxypropyl methyl cellulose si isku mid ah oo wax ku ool ah u kala firdhi karaa in hoobiye cement iyo alaabta malaastaan, iyo xirmo oo dhan qayb adag, iyo samaynta lakabka ah ee filimka qoynta, qoyaanka saldhigga muddo dheer si tartiib tartiib ah sii daayay, iyo falcelis fuuq alaabta cementitious inorganic, si loo hubiyo in xoogga bond iyo xoog cadaadis of alaabta.

Dhismaha, si loo gaaro saameynta ilaalinta biyaha, waxay u baahan yihiin in lagu daro tayada sareHPMCAlaabooyinka si waafaqsan caanaha, haddii kale, waxaa jiri doona qallajin degdeg ah oo ay sababto fuuq-baxa ku filan, hoos u dhigista xoogga, dildilaaca, durbaanka godan iyo dhibaatooyinka tayada daadinta, laakiin sidoo kale waxay kordhisaa dhibka dhismaha shaqaalaha. Marka heerkulku hoos u dhaco, cadadka biyaha HPMC si tartiib tartiib ah ayaa loo dhimi karaa, waxaana la gaari karaa saameyn la mid ah haynta biyaha.