Momwe mungasankhire hydroxypropyl methylcellulose pamatope a pulasitala?

Mtengo wa pH wazinthu za gypsum ndi acidic kapena ndale. Tsopano pali mitundu iwiri ya kalasi yomangahydroxypropyl methylcellulosePamsika: cellulose wosungunuka pang'onopang'ono ndi cellulose nthawi yomweyo (S). Instant cellulose siyoyenera machitidwe a gypsum. Zogulitsa, kusungunuka kwake kumakhala koyipa kwambiri pansi pa acidic kapena ndale, ndipo hydroxypropyl methylcellulose yomwe imasungunuka pang'onopang'ono imatha kusungunuka muzinthu za gypsum, koma cellulose yomwe imasungunuka pang'onopang'ono imakhala ndi vuto lalikulu, ndikosavuta kuphatikizira (pamene gypsum itatha khoma kwa kanthawi kochepa, mawanga ang'onoang'ono ang'onoang'ono amawonekera pamwamba). Pakali pano, mu mankhwala a gypsum, makamaka mu matope a gypsum opopera makina, pamafunika kuti cellulose ether iwonongeke ndikusungunuka mu nthawi yochepa kwambiri, zomwe zimafuna kuti tizichita kafukufuku wozama pa pang'onopang'ono kusungunuka kwa cellulose ether. kupanga ndondomeko. mankhwala pamwamba (osati otchedwa kuwonjezera zina zina mu wamba kalasi mapadi efa), kuti azolowere dongosolo gypsum matope. Hydroxypropyl methylcellulose ether yokhala ndi chithandizo chakuya pamtunda imatha kukhala ndi nthawi yokhazikika yosungunuka komanso zinthu zabwino zamakina mumatope a gypsum, ndipo zimatha kusintha kwambiri kusanja ndi kutsiriza kwa matope.

Makina opopera matope a gypsum nthawi zambiri amagwiritsa ntchito hydroxypropyl methylcellulose ether yotsika kwambiri pakati pa 20,000 ndi 75,000, ndipo kuchuluka kwake kumakhala 0.2% mpaka 0.4%. Nthawi yoyika makina opopera matope a gypsum imayendetsedwa pafupifupi ola limodzi. Timagwiritsa ntchito gypsum matope zokolola nkhawa, pulasitiki mamasukidwe akayendedwe, thixotropy, rheology ndi kusasinthasintha slurry kuweruza ntchito gypsum matope mankhwala.

Timaganizira za khalidwe la desulfurization gypsum gwero calcining ndondomeko, fillers (simenti, fine aggregate, heavy calcium ufa) ndi admixtures (angagwiritsidwe ntchito kumwazikana latex ufa, hydroxypropyl methyl cellulose efa, kukod perlite, gypsum retarder) Kusankha lonse. mankhwala chilinganizo chotsika mtengo.

Hydroxypropyl methyl cellulose etherchifukwa matope a gypsum ali ndi chiyero chapamwamba komanso chogwira ntchito bwino, ndipo akhala akuyamikiridwa kwambiri ndi makasitomala amtundu wa gypsum.