Ko te taupū pokey o te hydroxypropyl methylcellulose he tohu tino nui. Ko te pokey e kore e tohu i te ma. Ko te pokey o te cellulose HPMC ka whakawhirinaki ki te tukanga whakaputa. Ko nga taiao whakamahi rereke me whiriwhiri i te HPMC cellulose me nga rereke rereke, ehara i te mea ko te teitei ake o te HPMC cellulose, ko te pai ake! Ko te mea tika he tika!
1. Mana Viscosity
E kore e taea e te hydroxypropyl methylcellulose te kaha-nui te whakaputa i te cellulose tino teitei anake ma te whakakoi me te whakakapi hauota i roto i te hanga. I te nuinga o te waa, kaore e taea te whakahaere i te hanga o te cellulose kikorangi-nui i Haina. Heoi, mena ka taea te whakauru i te mita hāora ki roto i te ketere, ka taea te whakahaere i te hanga o tona pokey.
2. Te whakamahi i te kaihoko hononga
I tua atu, i te whakaaro ki te tere whakakapi o te hauota, he ngawari ki te whakaputa i nga hua-nui-nui ahakoa te ahua o te hau o te punaha. Ae ra, he mea nui ano te tohu polymerization o te miro parakore. Ki te kore e mahi, katahi ka mahi me te hononga hydrophobic. He kaihoko hononga kei tenei rohe i Haina. He aha te ahua o te kaihoko hononga hei whiriwhiri ka whai mana nui ki te mahi o te hua whakamutunga.
3. Te ihirangi Hydroxypropyl
Ko te toenga o te hāora i roto i te reactor ka paheke te cellulose me te heke o te taumaha ngota, engari he iti te toenga o te hāora, i te mea ka hono ano nga ngota ngota pakaru, kaore he uaua ki te hanga i te pokey teitei. Heoi, he nui te mahi o te reiti waiwai ki te ihirangi o te hydroxypropyl. Ko etahi o nga wheketere e hiahia ana ki te whakaheke i te utu me te utu, engari kaore e pai ki te whakanui ake i nga ihirangi o te hydroxypropyl, na reira kaore e taea e te kounga te eke ki te taumata o nga hua o waho.
4. Ētahi atu āhuatanga
Ko te reiti pupuri wai o te hua he hononga nui ki te hydroxypropyl, engari mo te tukanga tauhohenga katoa, ka whakatauhia ano e ia te tere o te pupuri wai, te paanga o te wai, te ōwehenga o te methyl chloride me te propylene oxide, te kukū alkali me te pupuri wai. Ko te ōwehenga ki te miro parakore ka whakatau i te mahi o te hua.
Wā tuku: Apr-04-2023