▲Hydroxypropyl methyl cellulose (HPMC)he pauda keʻokeʻo ʻole, ʻono ʻole, ʻona ʻole. Ma hope o ka hoʻoheheʻe piha ʻana i ka wai, e hana ka hydroxypropyl methyl cellulose i kahi colloid viscous māmā.
▲ ʻO nā mea waiwai nui o ka hydroxypropyl methyl cellulose (HPMC): ka pulupulu hoʻomaʻemaʻe, ka methyl chloride, propylene oxide, a me nā mea waiwai ʻē aʻe, caustic soda, acid, toluene, isopropanol, etc.
Hoʻohālikelike i nā pono a me nā pōʻino o ka hydroxypropyl methyl cellulose:
1. Maʻemaʻe hydroxypropyl methyl cellulose HPMC ua wehe maka a he uuku bulk density, me ka unahiʻole o 0.3-0.4/ml.
He maikaʻi loa ka wai o ka HPMC male ʻana a ʻoi aku ka kaumaha, ʻokoʻa loa ia mai ka huahana maoli i ka helehelena.
2.Maʻemaʻe hydroxypropyl methyl cellulose HPMC aqueous solution akaka, kiʻekiʻe māmā transmittance, ka wai paʻa helu> 97%.
He haumia ka hoʻonā wai wai HPMC, a paʻakikī ka paʻa ʻana o ka wai i ka 80%.
3. ʻAʻole pono ʻo HPMC maʻemaʻe e honi i ka ammonia, starch a me nā waiʻona.
Hiki ke honi ka HPMC i nā ʻano ʻono like ʻole, ʻoiai ʻaʻole ʻono, kaumaha nō ia.
4.Pure hydroxypropyl methyl cellulose HPMC pauka he fibrous ma lalo o kahi microscope a i ʻole aniani hoʻonui.
Hiki ke ʻike ʻia ka HPMC hoʻomāʻewaʻewa ma ke ʻano he ʻano paʻa a i ʻole kristal ma lalo o kahi microscope a i ʻole aniani hoʻonui.
Mai nā ʻano hea e ʻike ai i nā pono a me nā pōʻino o ka hydroxypropyl methyl cellulose?
1.keokeo degere
ʻOiai ʻaʻole hiki i ka keʻokeʻo ke hoʻoholo inā he maʻalahi ka HPMC e hoʻohana, a inā hoʻohui ʻia nā mea keʻokeʻo i ka wā o ka hana ʻana, e hoʻopilikia ia i kona ʻano. Eia naʻe, ʻo ka hapa nui o nā huahana maikaʻi he keʻokeʻo maikaʻi.
2. Ka maikaʻi
ʻO ka maikaʻi o ka HPMC maʻamau he 80 mesh a me 100 mesh, a ʻoi aku ka maikaʻi o ka maikaʻi, ma ka ʻōlelo maʻamau, ʻoi aku ka maikaʻi.
3.Ka lawe ʻana
Kauhydroxypropyl methyl cellulose (HPMC)i loko o ka wai e hana i ka colloid akaka, a nānā i kona transmittance māmā. ʻO ke kiʻekiʻe o ka transmittance māmā, ʻoi aku ka maikaʻi, e hōʻike ana he liʻiliʻi nā mea insoluble i loko. Maikaʻi ka permeability o nā reactors vertical, a ʻoi aku ka ʻino o ka reactors horizontal.
4.Pono
ʻO ka nui o ka'umekaumaha kikoʻī, ʻoi aku ka maikaʻi o ke kaumaha. Nui ka kikoʻī, maʻamau no ka mea he kiʻekiʻe ka ʻike o ka hui hydroxypropyl i loko, a ʻoi aku ka kiʻekiʻe o ka ʻike o ka hui hydroxypropyl, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai.
Ka manawa hoʻouna: Apr-25-2024