Hydroxypropyl methylcellulose (HPMC) imhando ye cellulose ether isina ionic yakagadzirwa ne cellulose yepolymer yechisikigo kuburikidza nemaitiro akasiyana-siyana emakemikari. Iupfu huchena husina hwema, husina kunaka uye husina chepfu hunozvimba kuita colloidal solution yakajeka kana ine makore mashoma mumvura inotonhora. Ine thickening, binding, disaspersing, emulsifying, film-forming, suspending, adsorbing, gelling, surface active, moisture-retaining and protective colloid properties. Hydroxypropyl methyl cellulose uye methyl cellulose zvinogona kushandiswa muzvivakwa, indasitiri yependi, synthetic resin, indasitiri yeceramic, mishonga, chikafu, machira, kurima, daily chemicals nedzimwe nzvimbo.
Mhedzisiro yekuchengetedza mvura uye musimboti wehydroxypropyl methylcellulose HPMC
Cellulose ether HPMC inonyanya kuita basa rekuchengetedza mvura uye kukora kwayo mumota yesimende uye slurry yakagadzirwa negypsum, uye inogona kuvandudza simba rekubatana uye kuramba kudonha kweslurry.
Zvinhu zvakaita sekupisa kwemhepo, tembiricha uye kumhanya kwekumanikidzwa nemhepo zvinokanganisa mwero wekushanduka kwemvura mumota yesimende uye zvigadzirwa zvakagadzirwa negypsum. Nokudaro, mumwaka yakasiyana, pane misiyano mumhedzisiro yekuchengetedza mvura yezvigadzirwa zvine huwandu hwakafanana hweHPMC hwakawedzerwa. Mukugadzirwa kwacho, mhedzisiro yekuchengetedza mvura yeslurry inogona kugadziriswa nekuwedzera kana kuderedza huwandu hweHPMC hwakawedzerwa. Kuchengetwa kwemvura kwemethyl cellulose ether pasi pemamiriro ekupisa kwakanyanya chiratidzo chakakosha chekusiyanisa mhando yemethyl cellulose ether. Zvigadzirwa zvakanaka zveHPMC series zvinogona kugadzirisa zvinobudirira dambudziko rekuchengetedzwa kwemvura pasi pekupisa kwakanyanya. Mumwaka wekupisa kwakanyanya, kunyanya munzvimbo dzinopisa uye dzakaoma uye kuvaka kwakatetepa parutivi rwezuva, HPMC yepamusoro inodiwa kuti ivandudze kuchengetedza kwemvura kweslurry. HPMC yepamusoro ine hunhu hwakanaka kwazvo. Mapoka ayo emethoxy nehydroxypropoxy akagoverwa zvakaenzana pamwe chete necellulose molecular chain, izvo zvinogona kuvandudza kugona kwemaatomu eokisijeni pazvisungo zvehydroxyl neether kubatana nemvura kuti zvigadzire zvisungo zvehydrogen. , kuitira kuti mvura yakasununguka ive mvura yakasungwa, kuitira kuti inyatsodzora kubuda kwemvura kunokonzerwa nemamiriro ekunze anopisa, uye kuti iwane mvura yakawanda inochengetwa.
HPMC yemhando yepamusoro inogona kuparadzirwa zvakaenzana uye zvinobudirira mumota yesimende uye zvigadzirwa zvakagadzirwa negypsum, uye kuputira zvidimbu zvese zvakasimba, uye kugadzira firimu rekunyorovesa, hunyoro huri pasi hunoburitswa zvishoma nezvishoma kwenguva yakareba, uye guruu risingasanganisike. Maitiro emvura inosanganiswa nezvinhu zvakaungana achaona simba rekubatana uye simba rekumanikidza rezvinhu. Naizvozvo, mukuvaka kwezhizha rinopisa zvakanyanya, kuti uwane mhedzisiro yekuchengetedza mvura, zvakakosha kuwedzera zvigadzirwa zveHPMC zvemhando yepamusoro muhuwandu hwakakwana zvichienderana nefomula, zvikasadaro, pachava nekushaikwa kwemvura yakakwana, kuderera kwesimba, kutsemuka, kuvharika uye kudonha kunokonzerwa nematambudziko ekuomesa zvakanyanya, asiwo kuwedzera kuoma kwekuvaka kwevashandi. Sezvo tembiricha ichidzikira, huwandu hwemvura inowedzerwa neHPMC hunogona kudzikiswa zvishoma nezvishoma, uye mhedzisiro imwechete yekuchengetedza mvura inogona kuwanikwa.
Kuchengetwa kwemvura kwechigadzirwa che hydroxypropyl methylcellulose HPMC pachako kunowanzo kanganiswa nezvinhu zvinotevera:
HPMC, methoxyl nehydroxypropoxyl zvakagadziriswa zvakaenzana zvakapararira zvakaenzana, uye mwero wekuchengetedza mvura wakakwira;
Tembiricha ye thermal gel ye cellulose ether HPMC yakakwira, mwero wekuchengetedza mvura wakakwira; zvikasadaro, mwero wekuchengetedza mvura wakaderera;
Kana viscosity ye cellulose ether HPMC ikawedzera, mwero wekuchengetedza mvura unowedzerawo; kana viscosity yasvika padanho rakati, kuwedzera kwemwero wekuchengetedza mvura kunowanzova kushoma;
Kana huwandu hwe cellulose ether HPMC hwakawedzerwa hwakawanda, chiyero chekuchengetedza mvura chinowedzera uye mhedzisiro yekuchengetedza mvura iri nani. Pahuwandu hwekuwedzera kwe0.25-0.6%, chiyero chekuchengetedza mvura chinowedzera nekukurumidza nekuwedzera kwehuwandu hwekuwedzera; kana huwandu hwekuwedzera huchiwedzera, mafambiro ekuwedzera kwechiyero chekuchengetedza mvura anoderera.
Nguva yekutumira: Chikumi-01-2023