Kusiyana pakati pa hydroxypropyl starch ether ndi cellulose ether

Tsopano anthu ambiri sakudziwa zambiri za hydroxypropyl starch ether. Amaganiza kuti pali kusiyana pang'ono pakati pa hydroxypropyl starch ether ndi starch wamba, koma sichoncho. Kuchuluka kwa hydroxypropyl starch ether komwe kumagwiritsidwa ntchito mu zinthu za mortar ndi kochepa kwambiri, ndipo kuchuluka kwa polar komwe kumawonjezeredwa kumatha kukhala ndi zotsatira zabwino.

Hydroxypropyl starch ether (HPS) ndi ufa woyera wosalala womwe umapezeka posintha zomera zachilengedwe, wothira kwambiri, kenako woumitsidwa ndi spray, popanda ma plasticizer. Ndi wosiyana kwambiri ndi starch wamba kapena starch wosinthidwa.

Ndipo hydroxypropyl methyl cellulose, yomwe imadziwikanso kuti hypromellose, hydroxypropyl methyl red vitamin ether, imagwiritsa ntchito thonje loyera kwambiri ngati zinthu zopangira, ndikuligwiritsa ntchito ndi lye pa 35-40 ° C kwa theka la ola. Finyani, phwanyani cellulose, ndikukalamba bwino pa 35 ° C, kuti digiri yapakati ya polymerization ya alkali fiber yomwe yapezeka ikhale mkati mwa mulingo wofunikira. Ikani alkali fiber mu ketulo ya etherification, onjezerani propylene oxide ndi methyl chloride motsatizana, ndikuitentha pa 50-80 ° C kwa maola 5, ndipo kuthamanga kwakukulu ndi pafupifupi 1.8MPa. Kenako onjezerani hydrochloric acid ndi oxalic acid yokwanira m'madzi otentha pa 90 ° C kuti mutsuke zinthuzo kuti muwonjezere voliyumu, kenako muzimutsuka ndi centrifuge, kenako muzimutsuka mobwerezabwereza mpaka mutakhala wopanda mphamvu. Amagwiritsidwa ntchito kwambiri pa zomangamanga, makampani opanga mankhwala, utoto, mankhwala, makampani ankhondo ndi madera ena, motsatana monga wothandizira kupanga filimu, binder, dispersant, stabilizer, thickener, etc.

Hydroxypropyl starch ether ingagwiritsidwe ntchito ngati chosakaniza cha zinthu zopangidwa ndi simenti, zinthu zopangidwa ndi gypsum ndi zinthu zopangidwa ndi calcium ya lime. Imagwirizana bwino ndi zinthu zina zomangira. Pogwiritsa ntchito limodzi ndi hydroxypropyl methylcellulose ether HPMC, imatha kuchepetsa mlingo wa hydroxypropyl methylcellulose (nthawi zambiri kuwonjezera 0.05% ya HPS kungachepetse mlingo wa HPMC ndi pafupifupi 20%-30%), ndipo imatha kukhala ndi mphamvu yokhuthala, kuti ilimbikitse kapangidwe ka mkati, ndi kukana bwino ming'alu komanso kugwira ntchito bwino.