Masiku ano, anthu ambiri sadziwa zambiri za hydroxypropyl starch ether. Iwo amaganiza kuti pali kusiyana kochepa pakati pa hydroxypropyl starch ether ndi wowuma wamba, koma sichoncho. Hydroxypropyl starch ether imagwiritsidwa ntchito pang'ono muzinthu zamatope, ndipo kuchuluka kowonjezera kwa dera la polar kumatha kukhala ndi zotsatira zabwino.
Hydroxypropyl starch ether (HPS) ndi ufa woyera wopangidwa kuchokera ku zomera zachilengedwe monga zopangira, zosinthidwa, zowonongeka kwambiri, kenako zowumitsidwa, popanda mapulasitiki. Ndizosiyana kwambiri ndi wowuma wamba kapena wowuma wosinthidwa
Hydroxypropyl methyl cellulose, yomwe imadziwikanso kuti hypromellose ndi hydroxypropyl methyl red vitamin ether, imapangidwa ndi cellulose ya thonje yoyera kwambiri ngati zopangira, zothiridwa ndi sopo pa 35-40 ° C kwa theka la ola, kufinya, cellulose imapunthwa, ndikukalamba moyenera. pa 35 ° C, kotero kuti pafupifupi digiri ya polymerization wa analandira CHIKWANGWANI zamchere ndi mkati osiyanasiyana chofunika. Ikani ulusi wa alkali mu ketulo ya etherification, onjezerani propylene oxide ndi methyl chloride motsatizana, etherify pa 50-80 ° C kwa maola 5, ndipo kuthamanga kwakukulu kuli pafupi 1.8MPa. Kenaka yikani mlingo woyenera wa hydrochloric acid ndi oxalic acid m'madzi otentha pa 90 ° C kuti mutsuka zinthuzo kuti muwonjezere voliyumu, kenaka muwononge madzi ndi centrifuge, ndipo potsiriza muzitsuka mobwerezabwereza kuti musalowerere. Amagwiritsidwa ntchito pomanga, makampani opanga mankhwala, utoto, mankhwala, mafakitale ankhondo ndi madera ena, motero monga filimu-kupanga wothandizira, binder, dispersant, stabilizer, thickener, etc.
Hydroxypropyl starch ether atha kugwiritsidwa ntchito ngati chophatikizira cha zinthu zopangidwa ndi simenti, zopangidwa ndi gypsum ndi mankhwala a laimu a calcium. Zimagwirizana bwino ndi zosakaniza zina zomanga. Kugwiritsidwa ntchito limodzi ndi hydroxypropyl methylcellulose etha HPMC, kungachepetse mlingo wa hydroxypropyl methylcellulose (nthawi zambiri kuwonjezera 0.05% ya HPS kungachepetse mlingo wa HPMC ndi pafupifupi 20% -30%), ndipo ikhoza kuthandizira kwambiri. Imalimbikitsa kapangidwe ka mkati, kukana bwino kwa ming'alu ndikuwongolera magwiridwe antchito.
Nthawi yotumiza: Apr-13-2023