Hydroxypropylmethylrubicin (HPMC) ndi cellulosic material, zamkati kapena thonje zomwe zingagwiritsidwe ntchito kuyenga zamkati zamatabwa. Pamaso alkalization kapena alkalization ndondomeko ayenera kuwonongedwa. Mawotchi kuwonongeka akhoza kuwononga akaphatikiza dongosolo la pepala mapadi zakuthupi, potero kuchepetsa polymerization ndi crystallinity, kuwonjezera ake enieni pamwamba m'dera potero kuonjezera masanjidwewo akhoza kukhala macromolecular ternary ndi mapadi.
Hydroxymethylcellulose imagwiritsidwa ntchito ngati gawo lapansi popanga mafuta. Zothandizira zimatha kumaliza kugwiritsa ntchito shuga, kukonza kagwiritsidwe ntchito ka zinthu, kuchepetsa zotsalira za gawo lapansi mumadzi owiritsa, komanso kuchepetsa mtengo wakuthira madzi oyipa. Makhalidwe a osakaniza ndi yabwino kukhathamiritsa kwa mtanda, kudyetsedwa mtanda ndi mosalekeza nayonso mphamvu njira, kupewa mpheto ya sing'anga zigawo zikuluzikulu ndi dilution mitengo, komanso facilitates kusintha nayonso mphamvu njira. Popeza HPMC ili ndi ntchito yofanana ndi ma ether ena osungunuka m'madzi, imatha kugwiritsidwa ntchito ngati chopangira filimu, thickener, emulsifier ndi stabilizer kwa utoto wa latex ndi utoto wosungunuka wa utomoni wosungunuka m'madzi, wokhala ndi kukana kwambiri kuvala, zokutira yunifolomu ndi kumamatira kupititsa patsogolo kugwedezeka kwapansi, kukhazikika kwa acid-base komanso kugwirizana ndi utoto wazitsulo.
Mapangidwe a hydroxypropylmethylcellulose (HPMC) amasokonezeka, koma kwenikweni, koma kutayika kwa gawo lapansi, maziko..etherification, kusungunuka
Kuchira kwa wothandizira kudzera pa centrifugation, kuchapa, kuyanika ndi kukhudza malo aliwonse ali ndi luso lofunikira komanso chidziwitso.
Zida zothandizira ndi kuwongolera mawotchi kumathandizira kuonetsetsa kuti zinthu zili bwino komanso njira yodalirika yopangira. Amakhudza kuchuluka kwa madzi mu hypromellose dry-mix mortar's matope osungira madzi a hydroxypropyl methylcellulose etha matope kuti apititse patsogolo kusungunuka kwa simenti, matope ndi gawo lapansi kuti awonjezere nthawi yomatira.
Pali zotsatira zazikulu za kusunga madzi, kusunga madzi, kusunga chinyezi ndi putty powder, adhesion ndi lubrication ntchito. hydroxypropyl methylcellulose imagwiritsidwa ntchito kwambiri pantchito yomanga, mafakitale opaka utoto ndi mafakitale ena ambiri.kupanga hydroxypropyl methylcellulose. Kutentha kwa kutentha kwa gelation ndikokwera kwambiri kuposa kwa methylcellulose. Laimu ndi koloko alibe zotsatira zochepa pa ntchito, koma imathandizira kusungunuka kwa masanjidwewo ndikuwonjezera kukhuthala. Pamene polyvinyl mowa, wowuma etere, masamba chingamu ndi hydroxypropyl methylcellulose utoto, etc., katundu njira ya dongosolo pamwamba. Mukamagwiritsa ntchito matope, gypsum, putty powder kapena zinthu zina monga zomatira, zimatha kusintha magwiridwe antchito ndikutalikitsa nthawi yogwira ntchito. Angagwiritsidwe ntchito kukongoletsa, phala matailosi, nsangalabwi, pulasitiki ndi kuchepetsa ntchito simenti zabodza tsinde. Madzi osungira madzi atatha kuyanika sangaphwanyike mofulumira, ndipo mphamvu pambuyo pochiritsa imakhala bwino.
Nthawi yotumiza: Dec-20-2022