Kukhuthala kowonekera ndi chizindikiro chofunikira cha hydroxypropyl methylcellulose, njira zoyezera zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo viscometry yozungulira, capillary viscometry ndi drop viscometry.
Hydroxypropyl methylcellulose adayesedwa kale pogwiritsa ntchito capillary viscometry pogwiritsa ntchito viscometer ya Ubbelohde. Nthawi zambiri njira yoyezera ndi yankho lamadzi la 2, njira yake ndi: V = Kdt. V imayimira mamasukidwe akayendedwe, K ndi nthawi zonse za viscometer, d imayimira kachulukidwe pa kutentha kosalekeza, t imatanthawuza nthawi kuchokera pamwamba mpaka pansi pa viscometer, unit ndi yachiwiri, njira iyi ndi yovuta kuigwiritsa ntchito. ndizosavuta kuyambitsa Zolakwika, ndipo ndizovuta kusiyanitsa mtundu wa hydroxypropyl methylcellulose.
Vuto la delamination la guluu yomanga ndi vuto lalikulu lomwe makasitomala amakumana nawo. Choyamba, vuto la zopangira liyenera kuganiziridwa pakumanga guluu wosanjikiza. Chifukwa chachikulu chopangira guluu wosanjikiza ndikuti polyvinyl mowa (PVA) ndi hydroxypropyl methylcellulose (HPMC) sizigwirizana. Chifukwa chachiwiri ndi chakuti nthawi yogwedeza sikwanira, ndipo kukhuthala kwa guluu womanga sikuli bwino.
The hydroxypropyl methylcellulose (HPMC) wa kupangidwa panopa ayenera kugwiritsidwa ntchito guluu zomangamanga, chifukwa hydroxypropyl methylcellulose (HPMC) amamwazikana m'madzi ndipo sangathe kwenikweni kupasuka, ndi mamasukidwe akayendedwe amadzimadzi kumawonjezeka pang'onopang'ono pafupifupi mphindi 2, kupanga Transparent viscous colloid. .
Zinthu zosungunuka zotentha zikasakanizidwa pamodzi m'madzi ozizira, zimabalalika m'madzi otentha ndikuzimiririka m'madzi otentha. Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka mawonekedwe a viscous colloid atapangidwa. Hydroxypropyl pomanga zomatira Mlingo wovomerezeka wa HPMC ndi 2-4kg.
Hydroxypropyl methylcellulose (HPMC) imakhala ndi mankhwala okhazikika, kukana kwa mildew ndi kusunga madzi abwino muzomatira zomangira, ndipo sikukhudzidwa ndi kusintha kwa pH. Itha kugwiritsidwa ntchito kuchokera ku 100,000 S mpaka 200,000 S, koma kukhuthala kwapamwamba pakupanga, ndikwabwinoko, komanso kukhuthala ndi kosagwirizana ndi mphamvu yolumikizirana. Kuchuluka kwa mamasukidwe amphamvu, kutsika mphamvu, nthawi zambiri kukhuthala kwa 100,000 S ndikoyenera.
Nthawi yotumiza: Apr-20-2023