1. Te mahana o te ra (0.2% otinga) 50-90°C.
2. Ka whakarewahia ki te wai me te nuinga o te polar c me te wahanga tika o te waiwaro/wai, propanol/wai, dichloroethane, me etahi atu, kare e rewa i roto i te etera, te acetone, te ewaro tino, ka pupuhi ki roto ki te wai maramara, paku puhoi ranei i roto i te wai matao wairewa colloidal. Ko te wairewa wai he mahi mata, he tino marama me te mahi pumau.
3. Kei a HPMC te taonga o te waiariki. Ka whakamahana te wairewa wai hua ki te hanga i te reera ka heke, ka memeha i muri i te whakamatao. He rereke te pāmahana o te reera o nga whakaritenga rereke. He rereke te wairewa ki te pokey. Ko te iti o te pokey, ka nui ake te whakarewatanga. Ko nga korero rereke o te HPMC he rereke nga ahuatanga, a ko te whakakorenga o te HPMC i roto i te wai kaore e pa ki te uara pH.
4. Te rahi o te matūriki: te tere haere o te 100 mata he nui ake i te 98.5%. Kiato rahi: 0.25-0.70g/ (te nuinga o te 0.4g/), te taumaha motuhake 1.26-1.31. Te wera o te tae: 180-200°C, te wera warohanga: 280-300°C. Ko te uara methoxyl mai i te 19.0% ki te 30.0%, me te uara hydroxypropyl mai i te 4% ki te 12%. Viscosity (22°C, 2%) 5～200000mPa .s. Ko te pāmahana reera (0.2%) he 50-90°C.
5. Ko te HPMC nga ahuatanga o te kaha o te whakapaoho, te tote tote, te pumau o te PH, te pupuri wai, te pumau o te rahi, te tino pai o te hanga kiriata me te whānuitanga o te aukati i te whana, te whakamararatanga me te whakakotahitanga.
Te wa tuku: Maehe-22-2023