N'oge a, ọtụtụ ndị amaghị ọtụtụ ihe gbasara hydroxypropyl starch ether. Ha na-eche na e nwere ntakịrị ihe dị iche n'etiti hydroxypropyl starch ether na nkịtị starch, ma ọ bụghị. A na-eji hydroxypropyl starch ether mee ihe na obere ego na ngwaahịa ngwa agha, na ọnụ ọgụgụ agbakwunyere nke mpaghara polar nwere ike nweta mmetụta dị mma.
Hydroxypropyl starch ether (HPS) bụ ntụ ntụ ọcha na-acha ọcha nke enwetara site na osisi sitere n'okike dị ka akụrụngwa, gbanwetụrụ, na-etherified nke ukwuu, wee fesaa ya, na-enweghị plastik. Ọ dị nnọọ iche na starch nkịtị ma ọ bụ starch gbanwetụrụ
Hydroxypropyl methyl cellulose, nke a makwaara dị ka hypromellose na hydroxypropyl methyl red vitamin ether, bụ nke a na-eji cellulose owu dị ọcha nke ukwuu dị ka akụrụngwa, na-emeso ya na lye na 35-40 ° C maka ọkara otu awa, squeezed, cellulose na-egweri, ma mee agadi nke ọma. na 35 Celsius C, nke mere na nkezi ogo polymerization nke eriri alkali enwetara dị n'ime oke achọrọ. Tinye eriri alkali n'ime kettle etherification, tinye propylene oxide na methyl chloride n'usoro, mee ka ọ dị na 50-80 Celsius maka awa 5, na nrụgide kachasị bụ ihe dịka 1.8MPa. Mgbe ahụ tinye ihe kwesịrị ekwesị nke hydrochloric acid na oxalic acid na mmiri ọkụ na 90 Celsius C iji sachaa ihe ahụ iji gbasaa olu, wee kpochaa ya na centrifuge, n'ikpeazụkwa na-asachapụ ya ugboro ugboro na nnọpụiche. A na-eji ya eme ihe na-ewu ụlọ, ụlọ ọrụ kemịkalụ, agba, ọgwụ, ụlọ ọrụ ndị agha na mpaghara ndị ọzọ, dịka onye na-emepụta ihe nkiri, ihe nkedo, dispersant, stabilizer, thickener, wdg.
Enwere ike iji hydroxypropyl starch ether dị ka ihe mgbakwunye maka ngwaahịa simenti, ngwaahịa gypsum na ngwaahịa calcium lime. Ọ nwere ezigbo ndakọrịta na ihe mgbakwunye ụlọ ndị ọzọ. Eji ya na hydroxypropyl methylcellulose ether HPMC, ọ nwere ike ibelata usoro onunu ogwu nke hydroxypropyl methylcellulose (n'ịgbakwụnye 0.05% nke HPS n'ozuzu nwere ike ibelata usoro onunu ogwu nke HPMC site na 20%-30%), ma nwee ike rụọ ọrụ na-emekọ ihe. Na-akwalite nhazi nke ime, nguzogide mgbape ka mma yana arụ ọrụ ka mma.
Oge nzipu: Eprel-13-2023