Hydroxypypyl methylcellulose ili pafupifupi insuluble mu mtheradi ndi acetone. Njira yothetsera matendawa imakhala yokhazikika mu kutentha kwa firiji ndipo imatha kuwutentha kwambiri. Ambiri mwa hydroxypropyl methylcellulose pamsika tsopano ndi m'madzi ozizira (chipinda otentha madzi, pita madzi). Madzi ozizira a HPMC idzakhala yabwino komanso yotetezeka kugwiritsa ntchito. HPMC imayenera kuwonjezeredwa mwachindunji ku yankho la madzi ozizira pambuyo pa mphindi makumi asanu ndi anayi kuthyola. Ngati ndichitsanzo chapadera, pamafunika kusunthidwa ndi madzi otentha kuti abalalike, kenako ndikuthira m'madzi ozizira kuti usungunuke pambuyo pozizira.
Zinthu za HPMC zikawonjezedwa mwachindunji madzi, adzagwirizana kenako ndikusungunuka, koma chisinthiko ichi chimakhala pang'onopang'ono komanso chovuta. Njira zitatu zotsatirazi zimalimbikitsidwa, ndipo ogwiritsa ntchito amatha kusankha njira yabwino kwambiri malinga ndi njira yogwiritsira ntchito (makamaka kwa madzi ozizira hpmc).
Kusungunula njira ndi kusamala kwa HPMC
1. Njira yamadzi ozizira: Ngati iyenera kuwonjezeredwa mwachindunji ku yankho lachilendo kutentha, ndibwino kugwiritsa ntchito mtundu wozizira wobayira madzi. Pambuyo poti kuwonjezera ma viscy, kusasinthika pang'onopang'ono kumawonjezeka pang'ono ndi index.
2. Njira yosakanikirana ya ufa: hpmc ufa ndi kuchuluka kofanana kapena zina zambiri za ufa ndi zophatikizika ndi zosakanikirana, ndipo mutatha kuwonjezera madzi ndikusungunuka, hpmc imatha kusungunuka nthawi ino ndipo sadzasungunuka. M'malo mwake, ziribe kanthu mtundu wa hydroxypypyl methylcelulose. Imatha kuwuma mwachindunji m'mazinthu zina.
3. Njira yosungunuka yonyowa: hpmc imabalalika kapena kunyongedwa ndi ma solntic, monga Ethanol glycol kapena mafuta, kenako ndikusungunuka m'madzi, ndipo HPMC imasungunuka.
Pakutha, ngati pali chovuta, chidzakutidwa. Izi ndizotsatira zosagwirizana, motero ndikofunikira kufulumizitsa liwiro losangalatsa. Ngati pali thovu mu kusungunuka, chifukwa cha mpweya woyambitsidwa ndi wosagwirizana, ndipo yankho lakelo limaloledwa kuyimilira kwa maola 2- 12 (nthawi yake imatengera kusasinthika kwa yankho) kapena kusintha, njira zina Kuchotsa, kuwonjezera kuchuluka kwa decomer yoyenera kungathetsenso izi. Kuonjeza decomer yoyenera kungathenso kuthetsa izi.
Popeza hydroxypypyl methylcellulose imagwiritsidwa ntchito m'mafakitale osiyanasiyana, ndizofunikira kwambiri kudziwa njira yofatsa ya hydroxygyllulose yogwiritsa ntchito molondola. Kuphatikiza apo, ogwiritsa ntchito amakumbutsidwa kuti alandire chidwi ndi chitetezo cha dzuwa, kutetezedwa kwamvula ndi kutetezedwa kwa chinyezi pakugwiritsa ntchito, kupewa kuwala mwachindunji, ndikusunga malo osindikizidwa ndi owuma. Pewani kulumikizana ndi magwero oyatsidwa ndikupewa mapangidwe a fumbi ambiri m'malo otsekedwa kuti aletse ngozi.
Post Nthawi: Jun-20-2023