Hydroxypropyl methylcellulose (HPMC) chinhu chinoshanda chemakemikari chinoshandiswa zvakanyanya mundima yeindasitiri. Iyo isiri-ionic cellulose ether, inonyanya kuwanikwa nekugadziriswa kwemakemikari echisikigo cellulose. Zvikamu zvaro ndezvekuti mapoka ehydroxyl ari mumamorekuru ecellulose anotsiviwa nemapoka emethoxy uye hydroxypropyl. HPMC inoshandiswa zvakanyanya muminda yakawanda senge kuvaka, machira, mushonga, chikafu, uye zvizorwa nekuda kwekusiyana kwayo kwemuviri nemakemikari zvimiro.
1. Muviri uye makemikari zvinhu
HPMC ine mvura yakanaka solubility uye inogona kunyungudika nekukurumidza mumvura inotonhora kuita inoonekera kana zvishoma mukaka colloidal mhinduro. Mhinduro yaro ine aqueous ine high viscosity, uye viscosity yayo inobatana nekugadzirisa, tembiricha uye dhigirii yekutsiva mhinduro. HPMC yakagadzikana muhupamhi pH renji uye ine kushivirira kwakanaka kune acids uye alkalis. Mukuwedzera, ine yakanakisa firimu-kuumba, adhesion, kuchengetedza mvura uye thickening zvivakwa.
2. Nzira yekugadzira
Maitiro ekugadzira eHPMC anonyanya kusanganisira matanho akadai sealkali kurapwa, etherification reaction uye post-kurapwa. Chekutanga, natural cellulose pretreated pasi alkaline mamiriro kuti activate, ipapo etherified ne methoxylating agents uye hydroxypropylating agents, uye pakupedzisira chigadzirwa chekupedzisira anowanikwa neutralization, kugeza, kuomesa uye kupwanya. Munguva yekugadzira maitiro, maitiro ekuita senge tembiricha, kudzvanywa, nguva yekuita uye huwandu hweakasiyana reagents huchakanganisa kunaka uye kuita kweHPMC.
3. Minda yekushandisa
3.1 Indasitiri yekuvaka
Muindasitiri yekuvaka, HPMC inonyanya kushandiswa seyakakora, bhainda uye inochengeta mvura yedhaka resimende. Inogona kuvandudza kushanda, kuita kwekuvaka uye kusimba kwechisungo chedhaka, uku ichideredza shrinkage uye kuputika kwedhaka.
3.2 Coating industry
HPMC inoshandiswa seyakakora, dispersant uye stabilizer muindasitiri yekupfeka. Inogona kuvandudza rheological zvimiro zvejasi, kuita kuti zvive nyore kubhurashi, uye kugadzirisa kunamatira uye kupfava kwejasi.
3.3 Maindasitiri ezvemishonga uye ezvekudya
Mundima yemishonga, HPMC inoshandiswa senge firimu-kugadzira zvinhu, inosimudzira-kuburitswa mumiririri uye stabilizer yemapiritsi ezvinodhaka. Inogona kudzora kusunungurwa kwemishonga uye kuvandudza kugadzikana kwemishonga. Muindasitiri yechikafu, HPMC inoshandiswa sechinhu chinowedzera kukora, emulsify, kumisa uye kudzikamisa chikafu.
3.4 Cosmetic Indasitiri
Muzvizoro, HPMC inoshandiswa seyakakora, firimu rekare uye stabilizer. Inogona kukwidziridza manyorerwo uye mashandisiro ezvizoro, uye kugadzirisa kugadzikana uye kunyorovesa zvivakwa zvezvigadzirwa.
4. Zvakanakira uye Zvinetso
Semakemikari anoshanda akasiyana, HPMC yakaratidza zvakakosha mabhenefiti munzvimbo dzakasiyana dzemaindasitiri. Chekutanga, inotorwa kubva kune yakasikwa cellulose uye ine yakanaka biocompatibility uye kuchengetedza kwezvakatipoteredza zvivakwa. Chechipiri, HPMC ine kugadzikana kwemakemikari yakakwirira uye inogona kuchengetedza kushanda kwayo pasi pemamiriro akasiyana ezvakatipoteredza. Nekudaro, maitiro ekugadzira eHPMC akaomarara uye ane zvakakwirira zvinodikanwa zvekugadzira michina uye tekinoroji. Pamusoro pezvo, kuenderana kwemhando uye kugadzikana kwekuita pakati pemabheti akasiyana ezvigadzirwa zvakare nyaya dzinoda kutariswa.
5. Future Development Trends
Nekufambira mberi kwesainzi uye tekinoroji uye shanduko mukudiwa kwemusika, tarisiro yekushandiswa kweHPMC ichave yakakura. Mundima yekuvaka, HPMC ichaita basa rakakura muzvinhu zvitsva zvekuvaka uye zvivakwa zvakasvibirira. Muminda yemishonga nechikafu, HPMC ichave ichishandiswa zvakanyanya sezvo hutano nekuchengetedza zviyero zvinovandudza. Uye zvakare, sevanhu vanonyanya kutarisisa kuchengetedza kwezvakatipoteredza uye kusimudzira kwakasimba, HPMC, sechinhu chinodzoreredzwa sosi, inoratidza mabhenefiti ayo ezvakatipoteredza mune mamwe minda.
Hydroxypropyl methylcellulose (HPMC) yave yakakosha makemikari zvinhu mukugadzirwa kwemaindasitiri nekuda kweiyo yakasarudzika zvivakwa uye yakakura mashandisirwo minda. Mune ramangwana, nekuenderera mberi kwekufambira mberi kwetekinoroji uye nekuenderera mberi kwekuwedzera kwenzvimbo dzekushandisa, HPMC ichaita basa rakakosha mune mamwe minda, kuunza mikana mitsva nematambudziko mukusimudzira maindasitiri akasiyana.
Nguva yekutumira: Jul-31-2024