Kodi pali kusiyana kotani pakati pahydroxypropyl methylcellulose(HPMC) yokhala ndi kapena yopanda S?
1. HPMC imagawidwa m'magulu awiri: mtundu wa nthawi yomweyo ndi mtundu wa kufalikira mwachangu
Mtundu wa HPMC wofalitsa mwachangu umaphatikizidwa ndi chilembo S. Pakupanga, glyoxal iyenera kuwonjezedwa.
Mtundu wa HPMC womwe umagwiritsidwa ntchito nthawi yomweyo suwonjezera zilembo zilizonse, monga "100000″ ndi "100000 viscosity fast dispersion type HPMC".
2. Ndi kapena popanda S, makhalidwe ndi osiyana
HPMC yomwe imafalikira mofulumira imafalikira mofulumira m'madzi ozizira ndipo imasowa m'madzi. Panthawiyi, madziwo alibe kukhuthala, chifukwa HPMC imafalikira m'madzi okha, ndipo palibe kusungunuka kwenikweni. Pakatha mphindi ziwiri, kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono, ndikupanga madzi owoneka bwino omata. Colloid yokhuthala.
HPMC ya Instant imatha kufalikira mofulumira m'madzi otentha pafupifupi 70°C. Kutentha kukatsika kufika pa kutentha kwina, kukhuthala kumawonekera pang'onopang'ono mpaka colloid yowoneka bwino yokhuthala ipangike.
3. Ndi kapena popanda S, cholinga chake ndi chosiyana
HPMC ya Instant ingagwiritsidwe ntchito kokha mu ufa wa putty ndi matope. Mu zomatira zamadzimadzi, zokutira ndi zinthu zotsukira, kusonkhana kumachitika ndipo sikungagwiritsidwe ntchito.
HPMC yomwazika mwachangu ili ndi ntchito zosiyanasiyana. Ingagwiritsidwe ntchito mu ufa wa putty, matope, guluu wamadzimadzi, utoto, ndi zinthu zotsukira popanda zoletsa zilizonse.
Njira yosungunula
1. Tengani madzi otentha ofunikira, muwaike mu chidebe ndikutenthetsa mpaka madigiri 80 Celsius, ndipo pang'onopang'ono onjezerani mankhwalawa mukasakaniza pang'onopang'ono. Cellulose imayandama pamadzi poyamba, koma pang'onopang'ono imafalikira kuti ipange slurry yofanana. Ziziritsani yankholo ndi kusakaniza.
2. Kapena tenthetsani 1/3 kapena 2/3 ya madzi otentha kufika pa 85°C, onjezerani cellulose kuti mupeze slurry ya madzi otentha, kenako onjezerani madzi ozizira otsala, pitirizani kusakaniza, ndikuziziritsa chisakanizocho.
3. Cellulose ili ndi nambala yopyapyala ya maukonde, ndipo imapezeka ngati tinthu tating'onoting'ono mu ufa wosakanikirana bwino, ndipo imasungunuka mwachangu ikakumana ndi madzi kuti ipange kukhuthala kofunikira.
4. Onjezani cellulose pang'onopang'ono komanso mofanana kutentha kwa chipinda, ndipo pitirizani kusakaniza panthawi yothira mpaka yankho lowonekera litapangidwa.
Ndi zinthu ziti zomwe zimakhudza kusunga madzi kwa hydroxypropyl methylcellulose?
Kusunga madzi kwa hydroxypropyl methylcellulose HPMC mankhwala nthawi zambiri kumakhudzidwa ndi zinthu zotsatirazi:
1. Kugwirizana kwa etha ya cellulose HPMC
HPMC yomwe imayankha mofanana imakhala ndi magulu a methoxy ndi hydroxypropoxy omwe amagawidwa mofanana komanso imakhala ndi madzi ambiri osungira madzi.
2. Kutentha kwa gel yotenthetsera ya cellulose ether HPMC
Kutentha kwa gel yotenthetsera kukakhala kwakukulu, kuchuluka kwa madzi osungira madzi kumakhala kwakukulu; apo ayi, kuchuluka kwa madzi osungira madzi kumakhala kochepa.
3. Kukhuthala kwa etha ya cellulose HPMC
Pamene kukhuthala kwa HPMC kukukwera, kuchuluka kwa madzi kumawonjezekanso; pamene kukhuthala kufika pamlingo winawake, kuwonjezeka kwa kuchuluka kwa madzi kumachepa.
Kuchuluka kwa efa ya cellulose HPMC
Kuchuluka kwa ether ya cellulose HPMC kukakhala kwakukulu, kuchuluka kwa madzi omwe amasungidwa kumakwera ndipo kuchuluka kwa madzi omwe amasungidwa kumawonjezeka.
Pakati pa 0.25-0.6%, kuchuluka kwa madzi omwe amasungidwa kumawonjezeka mofulumira ndi kuchuluka kwa madzi omwe amawonjezeredwa; pamene kuchuluka kwa madzi omwe amawonjezeredwa kumawonjezeka, kuchuluka kwa madzi omwe amasungidwa kumawonjezeka pang'onopang'ono.
Nthawi yotumizira: Okutobala-17-2022