Basa rehydroxypropyl methylcellulose (HPMC) muzvinhu zvegypsum rakakosha zvikuru. Zvinhu zvegypsum zvinoshandiswa zvakanyanya mukuvaka, kushongedza uye mamwe maindasitiri. Sechinowedzerwa chinoshanda zvakawanda, HPMC inoshandiswa zvakanyanya muzvinhu zvegypsum. Mabasa ayo makuru anosanganisira kuvandudza mashandiro egypsum slurry, kuwedzera simba rekubatanidza, kudzora nguva yekugadzika uye kuvandudza kugara kwenguva refu kwechinhu chacho.
Basa guru reHPMC mu gypsum
1. Kuvandudza mashandiro ebasa
HPMC inogona kuvandudza mashandiro egypsum slurry, zvichiita kuti ive nekuyerera uye kushanda zviri nani. Izvi zvinonyanya kuitika nekuti HPMC ine simba rakanaka rekukora uye inogona kuwedzera viscosity yeslurry, nokudaro ichidzivirira slurry kuti isapararire, isanyungudike nezvimwe zviitiko panguva yekuvaka. Pamusoro pezvo, HPMC inogonawo kuvandudza mashandiro ekuchengetedza mvura yegypsum slurry, kuitira kuti isaome nekuda kwekukurumidzira kwemvura panguva yekuvaka.
2. Wedzera simba rekubatana
HPMC inogona kuwedzera simba rekubatanidza pakati pegypsum nesubstrate. Izvi zvinodaro nekuti HPMC inogona kugadzira chimiro che network chakanaka mu gypsum slurry, izvo zvinowedzera kubatana kwe gypsum slurry, nokudaro zvichivandudza kugona kwayo kubatana ne substrate. Pamusoro pezvo, HPMC ine mwero wakati we wettability, izvo zvinogona kuwedzera nzvimbo yekubatana pakati pe gypsum slurry nepamusoro pe substrate, zvichiwedzera kuwedzera kwekubatana.
3. Dzora nguva yekugwamba kweropa
HPMC inogona kudzora nguva yekugadzika kwe gypsum slurry zvinobudirira. Kuwedzerwa kweHPMC kunogona kuderedza kumhanya kwekugadzika kwe gypsum slurry, zvichipa vashandi vekuvaka nguva yakakwana yekushanda nekugadzirisa, uye kudzivirira zvikanganiso zvekuvaka zvinokonzerwa nekugadzika nekukurumidza. Izvi zvakakosha zvikuru kune zvigadzirwa zvekuvaka munzvimbo huru uye zvigadzirwa zveplaster zvine chimiro chakaoma.
4. Kuvandudza kugara kwenguva refu kwezvinhu
HPMC inogonawo kuvandudza kugara kwenguva refu kwezvinhu zvegypsum. Kuwedzerwa kweHPMC kunogona kuwedzera kuramba kuripo kwezvinhu zvegypsum uye kudzivirira kuoma nekutsemuka kunokonzerwa nekuchinja kwetembiricha uye kuchinja kwehunyoro. Pamusoro pezvo, HPMC ine zvimwe zvinhu zvisingapindi mvura, izvo zvinogona kuderedza kuputsika kwehunyoro pazvinhu zvegypsum uye kuwedzera hupenyu hwazvo hwekushanda.
Pfungwa yekushandisa HPMC mu gypsum
1. Nheyo yekukora
Maumbirwo emamorekuru eHPMC ane huwandu hwakawanda hwema hydroxyl ne methyl groups. Mapoka aya anoshanda anogona kuumba hydrogen bonds nemamorekuru emvura, nokudaro zvichiwedzera viscosity yeslurry. Kukora kweHPMC hakungogone chete kuvandudza kuyerera uye kushanda kwe gypsum slurry, asiwo kuvandudza kugadzikana kweslurry uye kudzivirira delamination uye kunaya kwemvura.
2. Nheyo yekuchengetedza mvura
HPMC ine hunhu hwakanaka hwekuchengetedza mvura uye inogona kugadzira firimu rekuchengetedza mvura rakafanana mu gypsum slurry kuderedza kupwanyika kwemvura. HPMC inogona kudzivirira kupwanyika kwemvura kuti isatsemuke uye iderere panguva yekuomeswa, zvichivandudza kunaka uye mashandisirwo emidziyo yegypsum.
3. Nheyo yekubatana
HPMC inogona kugadzira network yakanaka mu gypsum slurry kuti iwedzere kubatana kwe slurry. Panguva imwe chete, kunyorova kweHPMC kunogona kuwedzera nzvimbo yekubatana pakati pe gypsum slurry nepamusoro pe substrate, nokudaro zvichivandudza simba rekubatanidza.
4. Nheyo yekudzora nguva yekugwamba kweropa
HPMC inogona kunonotsa kumhanya kwekuisa gypsum slurry, kunyanya nekugadzirisa kumhanya kwekuita kwemvura muslurry. Kuwedzerwa kweHPMC kunogona kunonotsa kumhanya kwekuita kwe calcium sulfate muslurry yegypsum, zvichiita kuti slurry ishande kwenguva yakareba uye ishande zviri nani pakuvaka.
5. Nheyo yekuvandudza kugara kwenguva refu
Kusimbaradzwa kweHPMC kunogona kuwedzera kusimbaradzwa kwemidziyo yegypsum uye kudzivirira kupwanyika kwakaoma nekupwanyika kunokonzerwa nekuchinja kwetembiricha uye hunyoro. Pamusoro pezvo, kushanda kweHPMC kusingapindi mvura kunogona kuderedza kupwanyika kwemidziyo yegypsum nemvura uye kuwedzera hupenyu hwayo hwekushanda.
Kushandiswa kweHPMC muzvinhu zvegypsum kwakakosha zvikuru. Nekuvandudza mashandiro ekushanda kwegypsum slurry, kuwedzera simba remabond, kudzora nguva yekugadzika uye kuvandudza kugara kwenguva refu kwezvinhu, HPMC inogona kuvandudza zvakanyanya kunaka uye kushanda kwezvigadzirwa zvegypsum. Saka, HPMC yave chinhu chakakosha uye chakakosha chezvinhu zvegypsum mumapurojekiti ekuvaka nekushongedza emazuva ano.
Nguva yekutumira: Chikunguru-11-2024