HPMC (hydroxypropyl methylcellulose) chinhu chakakosha chivakwa chekuwedzera uye chinoshandiswa zvakanyanya mudhaka rekuzvimisa-leveling. Kuzvimisa-leveling dhaka chinhu chine mvura yakawanda uye kugona kuzvimisa, izvo zvinowanzo shandiswa mukuvaka pasi kuita nzvimbo yakatsetseka uye yakati sandara. Muchishandiso ichi, basa reHPMC rinonyanya kuratidzwa mukuvandudza fluidity, kuchengetwa kwemvura, kunamatira uye kuita kwekuvaka kwedhaka.
1. Hunhu uye nzira yekuita kweHPMC
HPMC is a non-ionic cellulose ether ine hydroxyl uye methoxy mapoka muchimiro chayo chemolecular, iyo inoumbwa nekutsiva mamwe maatomu ehydrogen mu cellulose molecules. Hunhu hwayo hukuru hunosanganisira kunaka kunyungudika kwemvura, kukora, kuchengetedza mvura, lubricity uye kumwe kugona kwekubatanidza, izvo zvinoita kuti ishandiswe zvakanyanya mukuvaka.
Mudhaka rekuzvimisa, iwo makuru mhedzisiro yeHPMC inosanganisira:
Kukora mhedzisiro: HPMC inowedzera viscosity yekuzvimisa-leveling dhaka nekudyidzana nemamorekuru emvura kugadzira colloidal mhinduro. Izvi zvinobatsira kudzivirira kuparadzaniswa kwedhaka panguva yekuvaka uye kunovimbisa kufanana kwezvinhu.
Kuchengetwa kwemvura: HPMC ine yakanakisa kuchengetedza kwemvura kuita, iyo inogona kunyatso kudzikisa kurasikirwa kwemvura panguva yekuoma kwedhaka uye kuwedzera nguva yekushanda kwedhaka. Izvi zvinonyanya kukosha kune dhaka rinozvimisa, nekuti kurasikirwa kwemvura nekukurumidza kunogona kukonzera kutsemuka kwepamusoro kana kusagadzikana kwedhaka.
Kuyerera kwemutemo: HPMC inogona zvakare kuchengetedza yakanaka fluidity uye yekuzvimiririra kugona nekudzora nemazvo rheology yedhaka. Kudzora uku kunogona kudzivirira dhaka kuti risave nemhepo yakawandisa kana yakaderera panguva yekuvaka, kuve nechokwadi kufambira mberi kwakanaka kwemaitiro ekuvaka.
Kuwedzeredzwa kwechisungo kuita: HPMC inogona kuwedzera simba rekubatanidza pakati pekuzvimisa-leveling dhaka nepasi pepamusoro, kuvandudza mashandiro ayo ekunamatira, uye kudzivirira kugova, kupaza uye mamwe matambudziko mushure mekuvaka.
2. Kushandiswa chaiko kweHPMC mudhaka rekuzvimisa
2.1 Kuvandudza kushanda kwekuvaka
Kuzvimisikidza dhaka kazhinji kunoda nguva yakareba yekushanda panguva yekuvaka kuti ive nechokwadi chekuyerera kwakakwana uye nguva yekuyera. Kuchengetwa kwemvura kweHPMC kunogona kuwedzera nguva yekutanga yekumisikidza yedhaka, nekudaro kunatsiridza kuve nyore kwekuvaka. Kunyanya mukuvakwa kwepasi-hombe, vashandi vekuvaka vanogona kuwana nguva yakawanda yekugadzirisa uye kuenzana.
2.2 Kuvandudza kuita kwedhaka
Iko kukora mhedzisiro yeHPMC haingodzivise kupatsanurwa kwedhaka, asi zvakare kuve nechokwadi chekugovera kwakafanana kweaggregate uye simende zvikamu mudhaka, nekudaro zvichivandudza kuita kwese kwedhaka. Uye zvakare, HPMC inogona zvakare kudzikisa chizvarwa chemabhuru pamusoro peiyo-yega-yepamusoro dhaka uye kunatsiridza kupera kwepasi kwedhaka.
2.3 Kuvandudza kusamira kwepack
Panguva yekuomeswa kwedhaka rinozvimisa, kukurumidza kubuda kwemvura kunogona kuita kuti huwandu hwayo huderedze, zvichikonzera kutsemuka. HPMC inokwanisa kudzikamisa kumhanya kwekuomeswa kwedhaka uye kuderedza mukana wekupwanya kwe shrinkage nekuchengetedza hunyoro. Panguva imwecheteyo, kushanduka kwayo uye kunamatira kunobatsirawo kuvandudza kutsemuka kuramba kwedhaka.
3. Mhedzisiro yeHPMC dosage pakuita kwedhaka
Mudhaka rekuzvimiririra, huwandu hweHPMC hwakawedzerwa hunoda kunyatsodzorwa. Kazhinji, huwandu hweHPMC hwakawedzerwa huri pakati pe0.1% ne0.5%. Huwandu hwakakodzera hweHPMC hunogona kuvandudza zvakanyanya kuyerera uye kuchengetwa kwemvura kwedhaka, asi kana dosi yakawandisa, inogona kukonzera matambudziko anotevera:
Yakanyanya kuderera fluidity: Yakawandisa HPMC inoderedza kuyerera kwedhaka, kukanganisa kushanda kwekuvaka, uye kunyange kukonzera kusakwanisa kuzvidzora.
Yakawedzerwa nguva yekumisikidza: Yakawandisa HPMC ichawedzera nguva yekumisikidza yedhaka uye inokanganisa kufambira mberi kwekuvaka kunotevera.
Naizvozvo, mumashandisirwo anoshanda, zvinodikanwa kugadzirisa zvine hungwaru dosage yeHPMC zvinoenderana neformula yekuzvimisa-leveling dhaka, ambient tembiricha uye zvimwe zvinhu kuti ive nechokwadi chekuita kwekuvaka kwakanyanya.
4. Pesvedzero yemhando dzakasiyana dzeHPMC pakuita kwedhaka
HPMC ine zvakasiyana-siyana zvinotsanangurwa. Mhando dzakasiyana dzeHPMC dzinogona kuve nemhedzisiro dzakasiyana pakuita kwedhaka rekuzvimisa nekuda kwehuremu hwadzo hwakasiyana hwemamorekuru uye madhigirii ekutsiva. Kazhinji kutaura, HPMC ine high substitution degree uye yakakwira molecular huremu ine kusimba kwakasimba uye kuchengetwa kwemvura mhedzisiro, asi mwero wayo wekuparara unononoka. HPMC ine yakaderera substitution dhigirii uye yakaderera mamorekuru uremu inonyungudika nekukurumidza uye inokodzera zviitiko zvinoda kukurumidza kuparara uye pfupi-nguva coagulation. Naizvozvo, kana uchisarudza HPMC, zvinodikanwa kuti usarudze akakodzera akasiyana zvichienderana neakanangana nekuvaka zvinodiwa.
5. Impact yezvakatipoteredza zvinhu pakuita kweHPMC
Kuchengetwa kwemvura uye kukora mhedzisiro yeHPMC ichakanganiswa nenzvimbo yekuvaka. Semuenzaniso, mukupisa kwakanyanya kana kuderera kwehunyoro nharaunda, mvura inoputika nekukurumidza, uye kuchengetedza kwemvura kweHPMC kunova kwakanyanya kukosha; munzvimbo ine hunyoro, huwandu hweHPMC hunoda kudzikiswa zvakafanira kudzivirira kugadzika kwedhaka zvishoma nezvishoma. Naizvozvo, mune chaiyo yekuvaka maitiro, huwandu uye mhando yeHPMC inofanirwa kugadziridzwa zvinoenderana nemamiriro ekunze kuti ive nechokwadi chekugadzikana kweiyo-yega-leveling dhaka.
Sekuwedzera kwakakosha mudhaka rekuzvimisa-leveling, HPMC inonatsiridza zvakanyanya kuita kwekuvaka uye yekupedzisira mhedzisiro yedhaka kuburikidza nekukora kwayo, kuchengetwa kwemvura, kugadziridzwa kwemvura uye kuwedzeredzwa kwekunamatira. Nekudaro, mumashandisirwo chaiwo, zvinhu zvakaita sehuwandu, akasiyana uye nharaunda yekuvaka yeHPMC inofanirwa kutariswa zvizere kuti iwane yakanakisa kuvaka maitiro. Nekuenderera mberi kwekufambira mberi kwetekinoroji, kushandiswa kweHPMC mune yekuzvimisa dhaka kunowedzera kuwedzera uye kukura.
Nguva yekutumira: Sep-24-2024