Hydroxypropylmethylcellulose (HPMC) chinhu chakakosha chekuwedzera mudhaka, chinoita basa rakakosha mukuvandudza mashandiro edhaka. Sechinhu chisina muchetura, chisingasvibise uye chine hushamwari kwezvakatipoteredza, HPMC yakatsiva zvishoma nezvishoma zvechinyakare zvekuwedzera senge starch ether uye lignin ether muindasitiri yekuvaka. Ichi chinyorwa chichakurukura basa rinokosha reHPMC mudhaka kubva kumativi matatu ekuchengetedza mvura, kushanda uye kubatana.
HPMC inogona kunyatso kuvandudza kuchengetwa kwemvura kwedhaka. Kuchengetedzwa kwemvura kwedhaka zvinoreva kugona kwedhaka kuchengetedza mvura iri mukati mekuvaka. Kuchengetwa kwemvura kwedhaka kwakabatana nekushanda kwesamende uye zvinowedzera zvinoshandiswa mudhaka. Kana dhaka ikarasikirwa nemvura yakawandisa, ichaita kuti dhaka riome, izvo zvichaderedza zvakanyanya kushanda kwayo uye kunamatira, uye kunyange kukonzera matambudziko akadai sekuputika kwechigadzirwa chakapedzwa.
HPMC ine hydroxypropyl uye methyl mapoka uye yakanyanya hydrophilic. Inogona kuumba chidimbu chepamusoro pefirimu pamusoro pezvimedu zvedhaka kudzivirira kubuda kwemvura uye kunyatsovandudza kuchengetwa kwemvura kwedhaka. Panguva imwecheteyo, HPMC inogona zvakare kusanganisa nemamorekuru emvura kuburikidza nehaidhirojeni zvisungo, zvichiita kuti zvinyanye kuomera kuti mamorekuru emvura aparadzanise kubva kune zvimedu zvedhaka. Naizvozvo, HPMC ine mhedzisiro yakakosha pakuvandudza kuchengetwa kwemvura kwedhaka.
HPMC inogona zvakare kuvandudza kushanda kwedhaka. Kushanda kwedhaka kunoreva kureruka uko dhaka rinogona kushandiswa nekuumbwa panguva yekuvaka. Izvo zviri nani kushanda kwedhaka, zviri nyore kuti vashandi vekuvaka vadzore chimiro uye kuwirirana kwedhaka panguva yekuvaka. Kushanda kwakanaka kwedhaka kunogonawo kuderedza nhamba yehomwe dzemhepo muzvigadzirwa zvakapedzwa, zvichiita kuti chimiro chiwedzere uye chakasimba.
HPMC inogona kunyatso kuvandudza kushanda kwedhaka nekudzikisa viscosity yedhaka. Huremu hwemamorekuru eHPMC huremu hwakareba, uye zviri nyore kugadzira mabhondi ehydrogen nemamorekuru emvura, zvichikonzera kukwirisa viscosity. Nekudaro, HPMC inogona kuodzwa kuita zvidimbu zvidiki pasi pekuita kweshear simba, kuderedza viscosity yedhaka. Naizvozvo, kana vashandi vekuvaka vakabata dhaka, iyo HPMC zvimedu zvinoputswa, zvichiita kuti dhaka riwedzere kuyerera uye kuve nyore kuvaka. Uyezve, mapoka e-hydrophilic muHPMC anogonawo kugadzira firimu repamusoro pamusoro pematope, kuderedza kupindirana kwepakati pakati pematope, uye kuwedzera kushanda kwevhu.
HPMC inogona kuvandudza kunamatira kwedhaka. Iko kunamatira kwedhaka kunoreva kugona kwayo kunamatira zvakasimba pamusoro peiyo substrate. Kunamatira kwakanaka kunogona kuumba hukama hwakasimba uye hwakavimbika pakati pedhaka uye substrate, kuve nechokwadi chekugara kwechigadzirwa chakapedzwa. Mukuwedzera, kunamatira kwakanaka kunogonawo kuita kuti pamusoro pechigadzirwa chakapedzwa chive chakanaka uye chakanaka.
HPMC inogona kuvandudza kunamatira kwedhaka munzira dzinoverengeka. Chekutanga pane zvese, HPMC inogona kuumba firimu repamusoro pamusoro peiyo substrate mushure mekuvakwa kwedhaka, iyo inogona kunyatso kudzikisa kushushikana kwepasi kweiyo substrate uye kuita kuti zvive nyore kuti dhaka ribatire kune substrate. Kechipiri, HPMC zvimedu zvinogona zvakare kugadzira network dhizaini pamusoro peiyo substrate, kuwedzera nzvimbo yekubatana pakati pedhaka uye substrate, uye kuwedzera kunatsiridza kunamatira kwedhaka. Uyezve, mapoka e-hydrophilic muHPMC anogona kusanganiswa nemamorekuru emvura, ayo anogona kunyatso wedzera mvura-simende reshiyo yedhaka uye kuwedzera kuvandudza simba rakabatana redhaka.
Iko kushandiswa kweHPMC mudhaka kune akawanda mabhenefiti akadai sekuchengetedza mvura, kushanda, uye kunamira kwakagadziridzwa. Aya mabhenefiti haangobatsiri vashandi vekuvaka, asi zvakare ane mhedzisiro yakanaka pamhando yese yechigadzirwa chakapedzwa. Nekuvandudzwa kwesainzi uye tekinoroji, zvinotendwa kuti HPMC ichaita basa rinowedzera kukosha muindasitiri yekuvaka uye nekupa zvakawanda uye zvinoshanda uye zvakachengeteka zveindasitiri yekuvaka.
Nguva yekutumira: Sep-01-2023