Hydroxypropyl Methylcellulose (HPMC)chinhu chinonyungudika nemvura polymer chinoshandiswa zvakanyanya mukuvaka, mushonga, chikafu uye zvizorwa. Munzvimbo ine hunyoro, kuita kweHPMC kunokanganiswa nezvakawanda zvinhu, uye hunhu hwayo hunosarudza kuchinjika kwayo uye kugadzikana mumashandisirwo akasiyana.
1. Hygroscopicity
HPMC ndeye hydrophilic zvinhu zvine yakasimba hygroscopicity. Munzvimbo ine hunyoro, HPMC inogona kutora hunyoro kubva kumhepo, iyo inonyanya kuverengerwa kune akawanda hydroxyl uye methoxy mapoka mune ayo mamorekuru chimiro. Iyi hygroscopicity inokonzera kuti firimu remvura riumbe pamusoro peHPMC, zvichiita kuti iratidze mafuta uye kunamatira zviri nani. Iyi pfuma inonyanya kukosha mukuvaka zvinhu. Semuenzaniso, mukunamatira tile uye putty poda, HPMC inogona kuvandudza mashandiro ekuvaka uye kuchengetedza mvura kwechigadzirwa.
Nekudaro, yakawandisa hygroscopicity inogona kukonzera matambudziko mune mamwe maapplication. Semuenzaniso, kana HPMC ichishandiswa seanodzorwa kuburitsa matrix mumapiritsi emishonga, kunyura kwemvura yakawandisa kunogona kushandura chiyero chekuburitsa zvinodhaka uye kukanganisa kugadzikana kwekuita kwezvinodhaka. Naizvozvo, munzvimbo ine hunyoro, dhizaini yekugadzira yeHPMC inoda kutarisisa kune yayo hygroscopic maitiro.
2. Kugadzikana
HPMC kazhinji inoratidza kugadzikana kwakanaka kwemakemikari munzvimbo dzine hunyoro. Nekuda kwekugadziriswa kwakakosha kweketani yayo yemamorekuru, HPMC yakagadzikana mune ese aridhi uye alkaline nharaunda uye haiitike kuderera kwakanyanya kana kuita kwemakemikari pasi pehunyoro hwepamusoro. Zvisinei, hunyoro hwepamusoro hunogona kuva nehumwe hunoita pane zvayo zvemuviri. Semuyenzaniso, kuparara mwero weHPMC unogona kukurumidza, uye viscosity yayo hunhu anogona kuchinja nokuda mwando absorption.
Zvekushandisa zvekuvaka, hunyoro hwepamusoro nharaunda dzinogona kukonzera kuwanda kwemvura muHPMC-yakagadziridzwa madhaka kana machira kudzikire, nekudaro ichiwedzera nguva yekuomesa yechinhu. Mune zvimwe zviitiko, izvi zvinogona kubatsira nekuti zvinopa nguva yakareba yekushanda. Nekudaro, kunyorova kwakanyanya kunogona kukonzera kuderedzwa kwesimba mushure mekuoma kana kuputika pamusoro.
3. Kuchengeta mvura
HPMC ine yakanakisa kuchengetedza mvura munzvimbo dzine hunyoro. Ichi chivakwa chinoita kuti chiwedzere kukosha muindasitiri yekuvaka. Semuenzaniso, panguva yekugadzira madziro, HPMC inogona kudzivirira nekukasira kurasikirwa kwemvura, nekudaro ichiva nechokwadi chekuti dhaka rine nguva yakakwana yekupedzisa hydration reaction uye kuvandudza kunaka kwekuvaka. Munzvimbo ine hunyoro, iyi mvura yekuchengetedza simba inogona kuwedzeredzwa nekuti hunyoro huri munharaunda hunopa imwe sosi yekunyorova kwechinhu.
4. Kugona kugadzira firimu
Iyo firimu-kugadzira kugona kweHPMC inonyanya kutaridzika munzvimbo dzine hunyoro. Kana iyo HPMC mhinduro inoratidzwa kumhepo ine humidity yakakwira, iyo evaporation yemvura inononoka, ichikurudzira kuumbwa kweyunifomu yefirimu. Iyi firimu ine yakanaka kuchinjika uye tensile kuramba, uye inogona kupa yakanakisa kutsemuka kusamira uye kusapinda mvura zvivakwa zvekuvaka zvekuvaka. Muminda yezvekudya nemishonga, HPMC mafirimu anogona zvakare kushandiswa kupfekedza uye kuchengetedza zvinonzwisa tsitsi kubva mukufurirwa kwenzvimbo dzine hunyoro.
5. Optimization matanho muzvikumbiro
Kuti ugone kukwidziridza mashandiro eHPMC munzvimbo dzine hunyoro, nzira dzakasiyana dzekugadzirisa dzakagamuchirwa munzvimbo dzakasiyana dzekushandisa. Semuenzaniso, nekugadzirisa dhigirii rekutsiva HPMC, hygroscopicity yayo uye viscosity maitiro anogona kuchinjwa; muzvivakwa zvekuvaka, kugadzikana kwekuita kwayo munzvimbo dzine hunyoro kunogona kuvandudzwa nekubatanidza nezvimwe zvinowedzera (senge latex powder kana thickener).
Kuita kweHPMCmunzvimbo dzine hunyoro zvinokanganiswa nezvinhu zvakawanda. Iyo hygroscopicity, kuchengetwa kwemvura uye kugona kugadzira firimu kunoita kuti iratidze kukosha kwekushandisa muminda yekuvaka, mushonga uye chikafu. Nekudaro, nharaunda dzine hunyoro hwepamusoro dzinogona kuunza zvimwe zvinonetsa, izvo zvinoda kugadziriswa kuburikidza nesainzi magadzirirwo ekugadzira uye gadziridzo matanho. Nekudzidza zvakadzama maitiro eHPMC munzvimbo ine hunyoro, hunhu hwayo hunogona kuitwa zvirinani kuzadzisa zvinodiwa zveminda yakasiyana.
Nguva yekutumira: Zvita-24-2024