1. HPMC lagawidwa mu mtundu nthawi yomweyo ndi kudya dispersing mtundu.
Mtundu wobalalika mwachangu wa HPMC uli ndi chilembo S ngati cholumikizira. Glyoxal iyenera kuwonjezeredwa panthawi yopanga.
Mtundu wobalalitsa wa HPMC suwonjezera zilembo zilizonse, monga "100000" zikutanthauza "100000 mamasukidwe akayendedwe obalalitsa HPMC".
2. Ndi kapena popanda S, makhalidwe ndi osiyana
Mofulumira kubalalitsa HPMC mofulumira amabalalitsa m'madzi ozizira ndi mbisoweka m'madzi. The madzi alibe mamasukidwe akayendedwe pa nthawi ino chifukwa HPMC kokha omwazika m'madzi osati kwenikweni kusungunuka. Pambuyo pa mphindi ziwiri, kukhuthala kwamadzimadzi kumawonjezeka pang'onopang'ono, ndikupanga madzi owoneka bwino a viscous. Colloid wandiweyani.
Instant HPMC imatha kumwazikana mwachangu m'madzi otentha pafupifupi 70 ° C. Kutentha kumatsika mpaka kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka mawonekedwe a viscous colloid apangidwa.
3. Ndi kapena popanda S, cholinga ndi chosiyana
Instant HPMC ikhoza kugwiritsidwa ntchito mu putty powder ndi matope. Mu zomatira zamadzimadzi, utoto ndi zinthu zoyeretsera, zomatira zimatha kuchitika ndikukhala zosagwiritsidwa ntchito.
Mofulumira kubalalitsa HPMC ali osiyanasiyana ntchito. Itha kugwiritsidwa ntchito ngati putty ufa, matope, guluu wamadzimadzi, utoto, ndi zinthu zoyeretsera popanda zotsutsana.
njira yothetsera
1. Tengani madzi otentha ofunikira, ikani mu chidebe ndikutenthetsa pamwamba pa 80 ℃, kenaka yikani mankhwalawa pang'onopang'ono ndikuyambitsa. Ma cellulose amayandama pamwamba pamadzi poyamba, koma pang'onopang'ono amabalalika kupanga matope ofanana. Kuziziritsa yankho pamene akuyambitsa.
2. Kapena kutentha 1/3 kapena 2/3 ya madzi otentha pamwamba pa 85 ° C, onjezani mapadi kuti mupeze slurry yamadzi otentha, kenaka yikani madzi otsala a madzi ozizira, kusonkhezera mosalekeza, ndi kuziziritsa kusakaniza kwake.
3. Ma cellulose ali ndi kukula bwino kwa mauna ndipo amakhala ngati tinthu tating'ono ting'onoting'ono mu ufa wosakanikirana. Amasungunuka mwamsanga pamene madzi amapangidwa kuti apange mamasukidwe oyenera.
4. Onjezani cellulose pang'onopang'ono komanso mofanana kutentha kwa firiji, kuyambitsa mosalekeza mpaka njira yomveka bwino ipangidwe.
Kodi ndi zinthu ziti zomwe zimakhudza kusungidwa kwa madzi kwa hydroxypropyl methylcellulose?
Kusungidwa kwa madzi kwa mankhwala a hydroxypropyl methylcellulose HPMC pawokha kumakhudzidwa ndi izi:
1. Homogeneity wa cellulose ether HPMC
Magulu amtundu wa HPMC methoxy ndi hydroxypropoxy amagawidwa mofanana ndipo amakhala ndi madzi ochuluka.
2. Selulosi etha HPMC kutentha gel osakaniza kutentha
Kukwera kwa kutentha kwa gel osakaniza matenthedwe, kumapangitsa kuti madzi asungidwe; pomwe, m'munsimu kuchuluka kwa madzi posungira.
3. Viscosity ya cellulose ether HPMC
Pamene mamasukidwe akayendedwe a HPMC akuwonjezeka, kuchuluka kwa madzi osungirako kumawonjezekanso; pamene mamasukidwe akayendedwe afika pa mlingo winawake, kuchuluka kwa madzi posungira mlingo amakhala wofatsa.
Cellulose ether HPMC kuchuluka kwa kuchuluka
Kuchuluka kwa cellulose ether HPMC kuwonjezeredwa, kumapangitsa kuti madzi asungidwe komanso kuti madzi asungidwe bwino.
Pakati pa 0.25-0.6%, kuchuluka kwa madzi osungira madzi kumawonjezeka mofulumira pamene ndalama zowonjezera zikuwonjezeka; pamene kuchuluka kwa madzi kumawonjezeka, kuwonjezeka kwa chiwerengero cha madzi osungira madzi kumachepa.
Nthawi yotumiza: Feb-06-2024