Matsatsing ana, batho ba bangata ha ba tsebe haholo ka hydroxypropyl starch ether. Ba nahana hore ho na le phapang e nyenyane pakeng tsa hydroxypropyl starch ether le starch e tloaelehileng, empa ha ho joalo. Hydroxypropyl starch ether e sebelisoa ka tekanyo e nyenyane lihlahisoa tsa seretse, 'me palo e eketsehileng ea sebaka sa polar e ka finyella liphello tse ntle tsa boleng.
Hydroxypropyl starch ether (HPS) ke phofo e tšoeu e tšoeu e fumanoang limela tsa tlhaho e le lisebelisoa tse tala, tse fetotsoeng, tse nang le etherified haholo, ebe li omisitsoe, ntle le li-plasticizers. E fapane ka ho feletseng le starch e tloaelehileng kapa starch e fetotsoeng
Hydroxypropyl methyl cellulose, eo hape e tsejoang e le hypromellose le hydroxypropyl methyl red vitamin ether, e entsoe ka cellulose e hloekileng haholo ea k'hothone e le thepa e tala, e ts'oaroang ka lye ho 35-40 ° C ka halofo ea hora, e petelitsoe, selulose ea siloa, 'me e tsofala ka nepo. ka 35 ° C, e le hore tekanyo e tloaelehileng ea polymerization ea fiber e fumanoeng ea alkali e ka har'a mefuta e hlokahalang. Kenya fiber ea alkali ka har'a kettle ea etherification, eketsa propylene oxide le methyl chloride ka tatellano, etherify ho 50-80 ° C ka lihora tse 5, 'me khatello e phahameng e ka ba 1.8MPa. Ebe u eketsa tekanyo e loketseng ea hydrochloric acid le oxalic acid ho metsi a chesang a 90 ° C ho hlatsoa thepa ho atolosa molumo, ebe o e senya ka centrifuge, 'me qetellong ue hlatsoe khafetsa ho se nke lehlakore. E sebelisoa haholo kahong, indasteri ea lik'hemik'hale, pente, meriana, indasteri ea sesole le masimo a mang, ka ho latellana e le moemeli oa ho etsa lifilimi, binder, dispersant, stabilizer, thickener, joalo-joalo.
Hydroxypropyl starch ether e ka sebelisoa e le motsoako oa lihlahisoa tse thehiloeng ho samente, lihlahisoa tse thehiloeng ho gypsum le lihlahisoa tsa lime calcium. E na le tumellano e ntle le metsoako e meng ea moaho. Ha e sebelisoa hammoho le hydroxypropyl methylcellulose ether HPMC, e ka fokotsa litekanyetso tsa hydroxypropyl methylcellulose (ka kakaretso ho eketsa 0.05% ea HPS ho ka fokotsa tekanyo ea HPMC ka hoo e ka bang 20% -30%), 'me e ka bapala karolo e kholo. E khothalletsa sebopeho sa ka hare, khanyetso e ntle ea crack le ho ntlafatsa ho sebetsa.
Nako ea poso: Apr-13-2023