Hydroxypropyl methyl cellulose HPMC imhando ye cellulose ether isina ionic yakagadzirwa ne cellulose yepolymer yechisikigo kuburikidza nekugadzirwa kwemakemikari akasiyana-siyana. Iupfu huchena husina hwema, husina kunaka uye husina chepfu hunozvimba kuita mhinduro ye colloidal yakajeka kana kuti ine turbid mumvura inotonhora. Ine hunhu hwekukora, kubatana, kupararira, emulsification, kuumbwa kwefirimu, kusungirirwa, kunyudzwa, gelation, kushanda pamusoro, kuchengetedza hunyoro uye colloid inodzivirira. Hydroxypropyl methylcellulose inogona kushandiswa muzvivakwa, indasitiri yekuputira, resin yekugadzira, indasitiri yeceramic, mishonga, chikafu, machira, kurima, indasitiri yemakemikari yezuva nezuva nemamwe maindasitiri.
Basa uye musimboti wekuchengetedza mvura: cellulose ether HPMC inonyanya kuita basa rekuchengetedza mvura uye kukora mumota wesimende uye gypsum-based slurry, izvo zvinogona kuvandudza simba rekubatanidza uye kuramba kweslurry. Zvinhu zvakaita sekupisa kwemhepo, tembiricha uye kumhanya kwekumanikidzwa kwemhepo zvinokanganisa mwero wekushanduka kwemvura mumota wesimende uye zvigadzirwa zvegypsum. Nokudaro, mumwaka yakasiyana, pane misiyano mumhedzisiro yekuchengetedza mvura yehuwandu hwakafanana hwezvigadzirwa zveHPMC. Mukugadzirwa kwacho, mhedzisiro yekuchengetedza mvura yeslurry inogona kugadziriswa nekuwedzera kana kuderedza huwandu hweHPMC inowedzerwa.
Kuchengetwa kwemvura kwemethyl cellulose ether mumamiriro ekupisa kwakanyanya chiratidzo chakakosha chekusiyanisa mhando yemethyl cellulose ether. Zvigadzirwa zvakanaka zveHPMC zvinogona kugadzirisa dambudziko rekuchengetedzwa kwemvura pakupisa kwakanyanya. Munguva dzekupisa kwakanyanya, kunyanya munzvimbo dzinopisa uye dzakaoma uye kuvaka kwakatetepa parutivi rwezuva, HPMC yepamusoro inodiwa kuti ivandudze kuchengetwa kwemvura kweslurry.
HPMC yemhando yepamusoro ine hunhu hwakanaka kwazvo. Mapoka ayo emethoxy nehydroxypropoxy akapararira zvakaenzana pamwe chete ne cellulose molecular chain, izvo zvinogona kuvandudza kugona kwemaatomu eokisijeni ari pa hydroxyl ne ether bonds kubatana nemvura kugadzira hydrogen bonds. , Kuti mvura yakasununguka ibatane nemvura, nokudaro ichidzora kubuda kwemvura kunokonzerwa nemamiriro ekunze anopisa, uye kuita kuti mvura irambe yakachengetwa zvakanyanya.
HPMC yemhando yepamusoro inogona kuparadzirwa zvakaenzana uye zvinobudirira mumota yesimende uye zvigadzirwa zvakagadzirwa negypsum, uye inoputira zvidimbu zvese zvakasimba, uye inoumba jira refirimu rinonyorovesa. Mvura iri muhwaro inoburitswa zvishoma nezvishoma kwenguva yakareba. Zvinhu zvakakanyiwa zvinosangana nekuita kwemvura, kuitira kuti ive nechokwadi chekuti zvinhu zvinobatana uye simba rekumanikidza. Nokudaro, mukugadzirwa kwezhizha rinopisa zvakanyanya, kuitira kuti pave nemigumisiro yekuchengetedza mvura, zvigadzirwa zveHPMC zvemhando yepamusoro zvinofanirwa kuwedzerwa muhuwandu hwakakwana zvichienderana nefomula, zvikasadaro, mvura isina kukwana, simba shoma, kutsemuka, kuvharika uye kudonha zvichaitika nekuda kwekuoma kwakanyanya. Matambudziko, asiwo anowedzera kuoma kwevashandi vekuvaka. Sezvo tembiricha ichidzikira, huwandu hweHPMC hunowedzerwa hunogona kudzikiswa zvishoma nezvishoma, uye mhedzisiro imwechete yekuchengetedza mvura inogona kuwanikwa.
Kuchengetwa kwemvura kweHPMC kunokanganiswa nezvinhu zvinotevera:
1. Kufanana kwe cellulose ether HPMC
MuHPMC ine mhinduro dzakafanana, mapoka emethoxy nehydroxypropoxy anogoverwa zvakaenzana, uye mwero wekuchengetedza mvura wakakwira.
2. Tembiricha yemafuta emuchina we HPMC ye cellulose ether
Kupisa kwegel inopisa kwakakwira, mwero wekuchengetedza mvura wakakwira; pane kudaro, mwero wekuchengetedza mvura wakaderera.
3. Kupenya kwe cellulose ether HPMC
Kana viscosity yeHPMC ikawedzera, mwero wekuchengetedza mvura unowedzerawo; kana viscosity yasvika padanho rakati, kuwedzera kwemwero wekuchengetedza mvura kunowanzova kwakadzikama.
4. Kuwedzera kwe cellulose ether HPMC
Kana huwandu hwe cellulose ether HPMC hwakawedzerwa hwakawanda, huwandu hwekuchengetedza mvura hunowedzera uye huwandu hwekuchengetedza mvura hunowedzerawo. Pahuwandu hwekuwedzera kwe 0.25-0.6%, huwandu hwekuchengetedza mvura hunowedzera nekukurumidza nekuwedzera kwehuwandu hwekuwedzera; kana huwandu hwekuwedzera huchiwedzera, mwero wekuchengetedza mvura unowedzera kuderera.
Nguva yekutumira: Zvita-16-2021