Cellulose, yomwe imadziwikanso kuti hydroxypropylmethylcellulose (HPMC), ndi chinthu chofunikira kwambiri pa gypsum. Gypsum ndi chinthu chomangira chomwe chimagwiritsidwa ntchito kwambiri pakhoma ndi padenga. Chimapereka malo osalala, olinganizika bwino okonzekera kupenta kapena kukongoletsa. Cellulose ndi chinthu chowonjezera chopanda poizoni, choteteza chilengedwe komanso chopanda vuto chomwe chimagwiritsidwa ntchito popanga gypsum.
Cellulose imagwiritsidwa ntchito popanga gypsum kuti ikonze bwino mawonekedwe a gypsum. Imagwira ntchito ngati guluu, imagwira pulasitala pamodzi ndikuiletsa kuti isasweke kapena kufooka ikauma. Pogwiritsa ntchito cellulose mu chisakanizo cha stucco, mutha kuwonjezera mphamvu ndi kulimba kwa stucco, zomwe zimapangitsa kuti ikhale nthawi yayitali komanso isamafunike kukonza kwambiri.
HPMC ndi polima yachilengedwe yochokera ku cellulose, yokhala ndi maunyolo ataliatali a shuga, osinthidwa ndi reaction ndi propylene oxide ndi methyl chloride. Zinthuzo zimawonongeka ndipo sizimawononga chilengedwe. Kupatula apo, HPMC imasungunuka m'madzi, zomwe zikutanthauza kuti imatha kusakanikirana mosavuta mu gypsum mix ikakonzedwa.
Kuwonjezera cellulose ku stucco mix kumathandizanso kukonza ma stucco. Ma cellulose molecules ndi omwe amachititsa kuti pakhale mgwirizano pakati pa stucco ndi pansi pake. Izi zimathandiza kuti plaster imamatire bwino pamwamba pake ndipo imalepheretsa kuti isapatuke kapena kusweka.
Ubwino wina wowonjezera cellulose ku gypsum mix ndi wakuti zimathandiza kuti gypsum igwire bwino ntchito. Mamolekyu a cellulose amagwira ntchito ngati mafuta, zomwe zimapangitsa kuti plaster ifalikire mosavuta. Izi zimapangitsa kuti plaster igwiritsidwe ntchito mosavuta pakhoma kapena padenga, zomwe zimapangitsa kuti malo azikhala osalala.
Cellulose ingathandizenso kuoneka bwino kwa plaster. Mwa kuwonjezera mphamvu ndi kugwirira ntchito bwino kwa stucco, zimathandiza kuonetsetsa kuti plasteryo ikhale yosalala, yofanana yopanda ming'alu ndi zolakwika pamwamba. Izi zimapangitsa kuti plasteryo ikhale yokongola kwambiri komanso yosavuta kupaka utoto kapena kukongoletsa.
Kuwonjezera pa ubwino womwe watchulidwa pamwambapa, cellulose imathandizanso kuti stucco isapse. Ikawonjezeredwa ku gypsum mix, ingathandize kuchepetsa kufalikira kwa moto mwa kupanga chotchinga pakati pa moto ndi khoma kapena denga.
Kugwiritsa ntchito cellulose popanga gypsum kulinso ndi ubwino wambiri pa chilengedwe. Zipangizozi zimawonongeka mosavuta komanso sizowopsa, sizivulaza chilengedwe komanso thanzi la anthu. Kuphatikiza apo, popeza cellulose imawonjezera mphamvu ndi kulimba kwa pulasitala, zimathandiza kuchepetsa kuchuluka kwa kukonza komwe kumafunika pakapita nthawi. Izi zimachepetsa kuchuluka kwa zinyalala zomwe zimapangidwa komanso zimathandiza kusunga zinthu.
Cellulose ndi gawo lofunika kwambiri la gypsum. Kuiyika mu stucco mix kumathandiza kulimbitsa mphamvu, kulimba, kugwira ntchito bwino komanso mawonekedwe a stucco. Kuphatikiza apo, imapereka maubwino angapo azachilengedwe omwe amathandiza kuchepetsa kufunikira kosamalira kwa nthawi yayitali. Kugwiritsa ntchito cellulose mu gypsum ndi gawo lofunikira popanga zipangizo zomangira zokhazikika komanso zosawononga chilengedwe.
Nthawi yotumizira: Ogasiti-10-2023