▲Hydroxypropyl methyl cellulose (HPMC)ipfu chena isina hwema, isina kunaka, isina chepfu. Kana yanyungudika mumvura zvizere, hydroxypropyl methyl cellulose inozogadzira colloid inoonekera yakajeka.
▲ Zvinhu zvikuru zve hydroxypropyl methyl cellulose (HPMC): donje rakanatswa, methyl chloride, propylene oxide, nezvimwe zvinhu, caustic soda, acid, toluene, isopropanol, nezvimwewo.
Kuenzanisa zvakanakira nezvakaipa zvehydroxypropyl methyl cellulose:
1. Hydroxypropyl methyl cellulose yakachena HPMC haina kusimba uye ine huwandu hudiki, ine chikero che 0.3–0.4/ml.
HPMC yakasanganiswa ine kuyerera kwakanaka uye inorema, izvo zvakasiyana zvikuru nechitarisiko chechigadzirwa chaicho.
2. Mhinduro yemvura ye HPMC yakachena ye hydroxypropyl methyl cellulose yakajeka, ine chiedza chakawanda, ine mwero wekuchengetedza mvura > 97%.
Mvura inogadziriswa yeHPMC ine tsvina, uye mvura inochengetwa inonetsa kusvika pa80%.
3. HPMC yakachena haifanirwe kunhuhwirira ammonia, starch uye alcohols.
HPMC yakasanganiswa inogona kunhuhwirira marudzi ese ezvinonaka, kunyangwe isina kunaka, inonzwika kunge inorema.
4. Hupfu hweHPMC hwakachena hwehydroxypropyl methyl cellulose hune fibrous pasi pemaikorosikopu kana girazi rinokudza.
HPMC yakasanganiswa inogona kuonekwa sezvinhu zvakasimba kana makristaro pasi pemaikorosikopu kana girazi rinokudza.
Kubva pazvinhu zvipi zvinotiratidza zvakanakira nezvakaipa zvehydroxypropyl methyl cellulose?
1. dhigirii chena
Kunyange zvazvo kuchena kusingakwanise kuona kana HPMC iri nyore kushandisa, uye kana mishonga yekuchenesa ikawedzerwa panguva yekugadzira, inokanganisa kunaka kwayo. Zvisinei, zvigadzirwa zvakawanda zvakanaka zvine kuchena kwakanaka.
2. Kunaka
Kupfava kweHPMC kunowanzova nemambure makumi masere (80 mesh) uye mambure zana (100 mesh), uye kupfava kwacho kunowedzera, kazhinji, ndiko kuri nani.
3. Kutumira
Isahydroxypropyl methyl cellulose (HPMC)mumvura kuti igadzire colloid inoonekera, uye tarisa kufambiswa kwayo kwechiedza. Kufambiswa kwechiedza kwakakwira, zviri nani, zvichiratidza kuti hapana zvinhu zvakawanda zvisinganyunguduke mairi. Kupinda kwemagetsi e-vertical reactors kazhinji kwakanaka, nepo ma-horizontal reactors akanyanya kuipa.
4. Kuenzana
Kana simba remagetsi rakanyanya kukura, kurema kwacho kuri nani. Hunhu hwacho hwakakura, kazhinji nekuti huwandu hwehydroxypropyl group hurimo hwakakwira, uye huwandu hwehydroxypropyl group hwakakwira, kuchengetedza mvura kuri nani.
Nguva yekutumira: Kubvumbi-25-2024