Soluble hydroxypropyl methyl cellulose (HPMC) imhando isiri-ionic cellulose ether, iyo inogadzirwa kubva kune yakasikwa polymer cellulose kuburikidza nekutevedzana kwemakemikari kugadzirisa. Hypromellose (HPMC) ihupfu chena inonyungudika mumvura inotonhora kuti igadzire mhinduro yakajeka, ine viscous. Iyo ine zvimiro zvekukora, kunamatira, kupararira, emulsification, kuumba firimu, kumiswa, adsorption, gelation, basa repamusoro, kuchengetedza mvura uye kuchengetedzwa kwecolloid. Kuchengetwa kwemvura chinhu chakakosha che hypromellose HPMC, iyo zvakare ine hanya nevazhinji vanogadzira dhaka rakanyorova rakasanganiswa muChina. Zvinhu zvinokanganisa kuchengetwa kwemvura yedhaka yakasanganiswa zvinosanganisira huwandu hweHPMC, viscosity yeHPMC, saizi yechikamu uye tembiricha yenzvimbo. Iyo hypromellose HPMC inoita basa rakakosha mudhaka muzvikamu zvitatu: kuchengetedza kwayo kwakanyanya kwemvura, mhedzisiro yayo padhaka kusawirirana uye thixotropy, uye kudyidzana kwayo nesimende. Basa rekuchengetedza mvura re cellulose ether rinoenderana nekutorwa kwemvura pachigadziko, kuumbwa kwedhaka, kukora kwedhaka, kudiwa kwemvura kwedhaka uye nguva yekumisikidzwa kwezvinhu zvekugadzika. Iyo yakanyanya kujeka iyo hypromellose, zviri nani kuchengetedza mvura.
Zvinhu zvinokanganisa kuchengetwa kwemvura kwedhaka zvinosanganisira viscosity ye cellulose ether, huwandu hwekuwedzera, hunyoro hwechikamu uye tembiricha yebasa. Iyo yakakura viscosity ye cellulose ether, zviri nani kuchengetedza mvura. Viscosity yakakosha parameter yeHPMC performance. Nokuda kwechigadzirwa chimwe chete, kuyerwa nenzira dzakasiyana-siyana dzemigumisiro ye viscosity inosiyana zvikuru, uye vamwe vanotowedzera kaviri mutsauko. Naizvozvo, kana uchienzanisa viscosity, inofanira kunge iri munzira imwechete yekuyedza pakati, kusanganisira tembiricha, rotor uye zvichingodaro. Kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Nekudaro, iyo yakakwira viscosity ndeye, iyo yakakwira iyo molecular huremu hweHPMC, iyo solubility yeHPMC inoderera zvinoenderana, iyo ine mhedzisiro yakaipa pakusimba uye kuita kwekuvaka kwedhaka. Iyo yakakwirira viscosity, zviri nani kukora mhedzisiro yedhaka, asi haina kuenzana nehukama. Iyo yakakwirira iyo viscosity, iyo yakawanda viscous iyo yakanyorova dhaka ichave, zvese zvekuvaka, kuita kwekunamatira scraper uye yakakwirira kunamatira kune substrate. Asi hazvibatsiri kuwedzera simba rekugadzirisa dhaka rakanyorova pacharo. Zvose kuvaka, kuita kwekuita kwe-anti-sagging performance. Kusiyana neizvi, imwe yakagadziridzwa hypromellose ine yakaderera kusvika yepakati viscosity yakaratidza kuita kwakanakisa mukuvandudza kusimba kwemaitiro emadhaka akanyorova. Iyo yakakwirira yezvinyorwa zve cellulose ether mudhaka, zviri nani midziyo inochengeta mvura, inokwidza viscosity uye zviri nani midziyo inochengeta mvura. Fineness zvakare yakakosha kuita chiratidzo che hypromellose. Iko kunaka kweiyo hypromellose zvakare kune imwe mhedzisiro pakubata kwayo kwemvura. Kazhinji, kune hypromellose ine viscosity yakafanana asi yakanaka yakasiyana, pasi pehuwandu hwekuwedzera humwe, hunyoro hunyoro, zviri nani kuchengetedza mvura.
Mumatope-akasanganiswa dhaka, kuwedzerwa kwe cellulose ether HPMC yakaderera zvikuru, asi inogona kuvandudza kushanda kwekuvaka kwemvura yakasanganiswa dhaka. Kusarudzwa kwakakodzera kwe hypromellose kune simba guru pakushanda kwemvura yakasanganiswa dhaka.
Nguva yekutumira: Jul-27-2023