▲ʻO ka Hydroxypropyl methyl cellulose (HPMC)he pauka keʻokeʻo ʻala ʻole, ʻono ʻole, ʻaʻohe mea ʻawahia. Ma hope o ka hoʻoheheʻe piha ʻana i ka wai, e hana ka hydroxypropyl methyl cellulose i kahi colloid viscous moakaka.
▲ ʻO nā mea maka nui o ka hydroxypropyl methyl cellulose (HPMC): pulupulu i hoʻomaʻemaʻe ʻia, methyl chloride, propylene oxide, a me nā mea maka ʻē aʻe, caustic soda, acid, toluene, isopropanol, etc.
Hoʻohālikelike o nā pono a me nā hemahema o ka hydroxypropyl methyl cellulose:
1.Pure hydroxypropyl methyl cellulose HPMC he wehe ʻia ka ʻike maka a he liʻiliʻi ka nui o ka nui, me ka unahi o 0.3-0.4 / ml.
He maikaʻi loa ka wai o ka HPMC i hoʻopili ʻia a ʻoi aku ke kaumaha, he ʻokoʻa loa ia mai ka huahana maoli i ke ʻano.
2. ʻO ka hydroxypropyl methyl cellulose HPMC aqueous solution he moakāka, kiʻekiʻe ka transmittance māmā, ka helu paʻa wai > 97%.
He lepo iki ka hopena wai HPMC i hoʻopili ʻia, a he paʻakikī ke hiki aku i ka 80% o ka paʻa ʻana o ka wai.
3. ʻAʻole pono ka HPMC maʻemaʻe e honi i ka ammonia, ka starch a me nā ʻalekohol.
Hiki i ka HPMC i hoʻohuihui ʻia ke honi i nā ʻano ʻono like ʻole, ʻoiai inā he ʻono ʻole, e kaumaha ia.
4.Pure hydroxypropyl methyl cellulose HPMC pauka he fibrous ma lalo o kahi microscope a i ʻole ke aniani hoʻonui.
Hiki ke ʻike ʻia ka HPMC i hoʻopili ʻia ma ke ʻano he mau mea paʻa granular a i ʻole nā kristal ma lalo o kahi microscope a i ʻole ke aniani hoʻonui.
Mai nā ʻano hea e ʻike ai i nā pono a me nā hemahema o ka hydroxypropyl methyl cellulose?
1. kekelē keʻokeʻo
ʻOiai ʻaʻole hiki i ka keʻokeʻo ke hoʻoholo inā maʻalahi ka hoʻohana ʻana i ka HPMC, a inā hoʻohui ʻia nā mea hoʻokeʻokeʻo i ka wā o ke kaʻina hana, e hoʻopilikia ia i kona maikaʻi. Eia nō naʻe, ʻo ka hapa nui o nā huahana maikaʻi he keʻokeʻo maikaʻi.
2. Ka maikaʻi
ʻO ka maikaʻi o ka HPMC ma ke ʻano laulā he 80 mesh a me 100 mesh, a ʻo ka ʻoi aku ka maikaʻi o ka fineness, ma ke ʻano laulā, ʻoi aku ka maikaʻi.
3. Hoʻoili
E kauhydroxypropyl methyl cellulose (HPMC)i loko o ka wai e hana i kahi colloid moakaka, a nānā i kona hoʻoili ʻana i ka mālamalama. ʻO ke kiʻekiʻe o ka hoʻoili ʻana o ka mālamalama, ʻoi aku ka maikaʻi, e hōʻike ana he emi nā mea hiki ʻole ke hoʻoheheʻe ʻia i loko. ʻOi aku ka maikaʻi o ka permeability o nā reactors vertical, ʻoiai ʻoi aku ka maikaʻi ʻole o nā reactors horizontal.
4. Ka Hoʻohālikelike
ʻOi aku ka nui o ke kaumaha kikoʻī, ʻoi aku ka maikaʻi o ke kaumaha. Nui ka kikoʻī, ma ke ʻano laulā no ka mea he kiʻekiʻe ka nui o ka hui hydroxypropyl i loko, a kiʻekiʻe ka nui o ka hui hydroxypropyl, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai.
Ka manawa hoʻouna: ʻApelila-25-2024