1.HPMCimagawidwa m'mitundu iwiri: mtundu wa instant ndi mtundu wa fast dispersion.
Mtundu wa HPMC fast dispersion umaphatikizidwa ndi chilembo S, ndipo glyoxal iyenera kuwonjezedwa panthawi yopanga.
Mtundu wa HPMC womwe umagwiritsidwa ntchito nthawi yomweyo suwonjezera zilembo zilizonse, monga "100000″ amatanthauza "100000 viscosity."
2. Ndi kapena popanda S, makhalidwe ndi osiyana
HPMC yomwe imabalalika mofulumira imabalalika mwachangu ikakumana ndi madzi ozizira ndipo imasowa m'madzi. Panthawiyi, madziwo alibe kukhuthala, chifukwa HPMC imabalalika m'madzi popanda kusungunuka kwenikweni. Pakatha mphindi ziwiri, kukhuthala kwa madziwo kumawonjezeka pang'onopang'ono, ndikupanga colloid yowonekera bwino.
HPMC ya Instant imatha kufalikira mwachangu m'madzi otentha pafupifupi 70°C. Kutentha kukatsika kufika pa kutentha kwina, kukhuthala kudzaonekera pang'onopang'ono mpaka colloid yowoneka bwino yokhuthala ipangidwe.
3. Ndi kapena popanda S, cholinga chake ndi chosiyana
HPMC ya Instant ingagwiritsidwe ntchito kokha mu ufa wa putty ndi matope. Mu guluu wamadzimadzi, utoto ndi zinthu zotsukira, padzakhala zochitika zogawa magulu ndipo sizingagwiritsidwe ntchito.
Kufalikira mwachanguHPMCIli ndi ntchito zosiyanasiyana ndipo ingagwiritsidwe ntchito mu ufa wa putty, matope, guluu wamadzimadzi, utoto, ndi zinthu zotsukira popanda zotsutsana zilizonse.
4. Njira yosungunula
4-1. Tengani madzi otentha ofunikira, muwaike mu chidebe ndikutenthetsa mpaka madigiri 80 Celsius, ndipo pang'onopang'ono onjezerani mankhwalawa mukasakaniza pang'onopang'ono. Cellulose imayandama pamwamba pa madzi poyamba, koma pang'onopang'ono imafalikira kuti ikhale slurry yofanana. Yankho limaziziritsidwa pamene likusakaniza.
4-2. 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.
4-3. Ulusi wa cellulose ndi wabwinobwino, ndipo umapezeka ngati tinthu tating'onoting'ono tomwe timasakanikirana mofanana mu ufa wosakanikirana, ndipo umasungunuka mwachangu ukakumana ndi madzi kuti upange kukhuthala kofunikira.
4-4. Pang'onopang'ono komanso mofanana onjezerani cellulose kutentha kwa chipinda, ndipo pitirizani kusakaniza mpaka yankho lowonekera litapangidwa.
5. Ndi zinthu ziti zomwe zimakhudza kusunga madzi kwa hydroxypropyl methyl cellulose?
5-1. Kugwirizana kwa etha ya cellulose HPMC
HPMC, methoxyl ndi hydroxypropoxyl zomwe zimayanjanitsidwa mofanana zimagawidwa mofanana, ndipo kuchuluka kwa madzi omwe amasungidwa kumakhala kwakukulu.
5-2. Kutentha kwa gel yotentha 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.
5-3. Cellulose Ether HPMC Kukhuthala
Pamene kukhuthala kwa HPMC kukukwera, kuchuluka kwa madzi kumawonjezekanso; pamene kukhuthala kufika pamlingo winawake, kuwonjezeka kwa kuchuluka kwa madzi kumachepa.
6.Kuwonjezera kuchuluka kwa efa ya cellulose HPMC
Kuchuluka kwa efa ya cellulose kumakhala kwakukuluHPMCKuonjezera apo, kuchuluka kwa madzi omwe amasungidwa m'madzi kumakhala kwakukulu komanso kuchuluka kwa madzi omwe amasungidwa m'madzi.
Pakati pa 0.25-0.6%, kuchuluka kwa madzi osungidwa kunawonjezeka mofulumira ndi kuchuluka kwa madzi owonjezeredwa; pamene kuchuluka kwa madzi owonjezeredwa kunawonjezeka, kuchuluka kwa madzi osungidwa kunachepa.
Nthawi yotumizira: Epulo-26-2024