Hona joale batho ba bangata ha ba tsebe ho hongata ka hydroxypropyl starch ether. Ba nahana hore ho na le phapang e nyane pakeng tsa hydroxypropyl starch ether le starch e tloaelehileng, empa ha ho joalo. Palo ea hydroxypropyl starch ether e sebelisoang lihlahisoa tsa seretse e nyane haholo, 'me palo e ekelitsoeng ea polar e ka fihlela litlamorao tse ntle tsa boleng.
Hydroxypropyl starch ether (HPS) ke phofo e tšoeu e ntle e fumanoang ka ho fetola limela tsa tlhaho, e qhibilihisoa haholo, ebe e omisoa ka spray, ntle le li-plasticizer. E fapane ka ho feletseng le starch e tloaelehileng kapa starch e fetotsoeng.
'Me hydroxypropyl methyl cellulose, e tsejoang hape e le hypromellose, hydroxypropyl methyl red vitamin ether, e lokela ho sebelisa cellulose ea k'hothone e hloekileng haholo e le thepa e tala, 'me e phekoloe ka lye ho 35-40 ° C ka halofo ea hora. Hatella, sila cellulose, 'me u tsofale hantle ho 35 ° C, e le hore tekanyo e tloaelehileng ea polymerization ea alkali fiber e fumanoeng e be ka har'a sebaka se hlokahalang. Kenya alkali fiber ka ketleleng ea etherification, eketsa propylene oxide le methyl chloride ka tatellano, 'me u e etherify ho 50-80 ° C ka lihora tse 5, 'me khatello e phahameng ka ho fetisisa e ka ba 1.8MPa. Ebe u eketsa hydrochloric acid le oxalic acid e lekaneng metsing a chesang ho 90 ° C ho hlatsoa thepa ho atolosa bophahamo, ebe u e ntša metsi ka centrifuge, 'me qetellong u e hlatsoe khafetsa ho fihlela e sa nke lehlakore. E sebelisoa haholo kahong, indastering ea lik'hemik'hale, penteng, meriana, indastering ea sesole le masimong a mang, ka ho latellana e le moemeli oa ho etsa filimi, binder, dispersant, stabilizer, thickener, jj.
Hydroxypropyl starch ether e ka sebediswa e le motswako bakeng sa dihlahiswa tse thehilweng hodima samente, dihlahiswa tse thehilweng hodima gypsum le dihlahiswa tsa calcium tsa lime. E na le tshebedisano e ntle le metswako e meng ya kaho. Ha e sebediswa mmoho le hydroxypropyl methylcellulose ether HPMC, e ka fokotsa tekanyo ya hydroxypropyl methylcellulose (ka kakaretso ho eketsa 0.05% ya HPS ho ka fokotsa tekanyo ya HPMC ka hoo e ka bang 20%-30%)), mme e ka bapala phello ya ho teteana, ho kgothaletsa sebopeho sa kahare, ka ho hanyetsa ho betere ha mapetso le ho sebetsa hantle ho ntlafetseng.
Nako ea poso: Mmesa-24-2023