Momwe mungayesere kukhuthala kwa hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose yomanga iyenera kupeŵa kulowetsa madzi m'khoma, komanso kusunga madzi okwanira mumatope kungapangitse simentiyo kutulutsa bwino madzi ndi madzi. Hydroxypropyl methylcellulose kukhuthala kwa cellulose mumatope kumayenderana mwachindunji, kukweza kwa mamachulukidwe ake, kumapangitsa kuti hydroxypropyl methylcellulose asungidwe bwino madzi.

Chinyontho cha hydroxypropyl methylcellulose chikachuluka kwambiri, kusungidwa kwa madzi kwa hydroxypropyl methylcellulose kudzachepa, zomwe zidzadzetsa kuchepa kwa ntchito yomanga ya hydroxypropyl methylcellulose. Timadziwanso zinthu zimene sizivuta kulakwitsa. Tizisunga mwatsopano nthawi zonse ndipo tidzalandira zotsatira zosayembekezereka.

Kukhuthala kowonekera ndi chizindikiro chofunikira cha hydroxypropyl methylcellulose. Njira zodziwira zodziwika bwino ndi viscometry yozungulira, capillary viscometry ndi viscometry yakugwa.

M'mbuyomu, njira yodziwira hydroxypropyl methylcellulose inali capillary viscometry, pogwiritsa ntchito ubbelohde viscometer. Nthawi zambiri njira yotsimikizira ndi yankho lamadzi la 2, ndipo njira yake ndi: V=Kdt. V amaimira mamasukidwe akayendedwe, unit ndi, K ndi mosalekeza wa viscometer, d amaimira kachulukidwe pa kutentha nthawi zonse, t amatanthauza nthawi kuchokera pamwamba mpaka pansi kudzera viscometer, unit ndi yachiwiri s. Njirayi ndi yovuta kuigwiritsa ntchito, ndipo ngati pali zinthu zosasungunuka, zimakhala zosavuta kuyambitsa zolakwika, ndipo n'zovuta kudziwa mtundu wa hydroxypropyl methylcellulose.

Vuto la delamination la guluu yomanga ndi vuto lalikulu lomwe makasitomala amakumana nawo. Choyamba, vuto la zopangira liyenera kuganiziridwa mu delamination ya guluu yomanga. Chifukwa chachikulu cha delamination guluu zomangamanga ndi polyvinyl mowa (PVA) ndi hydroxypropyl methylcellulose (HPMC). chifukwa chosagwirizana. Kachiwiri, ndi chifukwa chakuti nthawi yosonkhezera sikwanira; palinso kuti kukhuthala kwa guluu womanga sikwabwino.

Pomanga guluu, instant hydroxypropyl methylcellulose (HPMC) iyenera kugwiritsidwa ntchito, chifukwa hydroxypropyl methylcellulose (HPMC) imamwazikana m'madzi popanda kusungunuka kwenikweni. Pafupifupi mphindi 2, kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, ndikupanga mawonekedwe a viscous colloid.

Zogulitsa zotentha zotentha, zikakumana ndi madzi ozizira, zimatha kumwazikana m'madzi otentha ndikuzimiririka m'madzi otentha. Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka kumapanga mawonekedwe a viscous colloid. Kuchuluka kovomerezeka kwa hydroxypropyl methylcellulose (HPMC) kuwonjezeredwa ku guluu womanga ndi 2-4kg.

Hydroxypropyl methylcellulose (HPMC) imakhala ndi mankhwala okhazikika, kukana kwa mildew, komanso kusunga madzi abwino mu guluu womanga, ndipo sikukhudzidwa ndi kusintha kwa pH mtengo. Itha kugwiritsidwa ntchito ndi mamasukidwe akayendedwe kuyambira 100,000 S mpaka 200,000 S. Koma popanga, kukwezeka kwamphamvu kwambiri, kumakhala bwino. The mamasukidwe akayendedwe ndi inversely molingana ndi mphamvu chomangira. Kukwera mamasukidwe akayendedwe, ang'onoang'ono mphamvu. Nthawi zambiri, kukhuthala kwa 100,000 S ndikoyenera.