Hydroxypropyl methylcellulose (HPMC) ipolymer inoshanda zvakasiyana-siyana inoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana kusanganisira kuvaka. Mukushandiswa kwegypsum, HPMC inoshanda sechinhu chakakosha chine mabhenefiti akasiyana-siyana anobatsira kuvandudza mashandiro uye mhando yemafomula egypsum.
Nhanganyaya ku hydroxypropyl methylcellulose:
Hydroxypropyl methylcellulose ipolymer yakagadzirwa zvishoma inotorwa kubva ku cellulose, polymer yechisikigo inowanikwa mumiti. HPMC inogadzirwa nekushandisa propylene oxide ne methyl chloride mukurapa cellulose, zvichiita kuti pave nemakemikari ane hunhu hwakanyanya kana tichienzanisa ne cellulose. Dhigirii rekutsiva (DS) re hydroxypropyl ne methoxy groups pa cellulose backbone rinosarudza hunhu hweHPMC.
Zvinhu zveHPMC:
Kuchengetwa kwemvura:
HPMC ine hunhu hwakanaka hwekuchengetedza mvura uye inogona kugadzira jira rakatetepa pamusoro pegypsum kuti ideredze kupwa kwemvura. Izvi zvakakosha kuti pave nemamiriro ekupisa akakodzera uye kudzivirira kuoma kwestucco nguva isati yakwana.
Kugona kushanda zvakanaka kwemuchina:
Kuwedzerwa kweHPMC kunoita kuti plaster ishande zvakanaka, zvichiita kuti zvive nyore kusanganisa, kuisa uye kuparadzira. Kugadzikana kwakawedzerwa kunobatsira kuti pave nekunamira kwakanaka uye kufukidza nzvimbo dzakasiyana-siyana.
Nguva yekuisa inodzorwa:
HPMC inobvumira kudzora kukuru panguva yekuiswa kwepurasita. Nekugadzirisa huwandu hweHPMC, vagadziri vanogona kugadzirisa nguva dzakatarwa kuti dzienderane nezvinodiwa zvepurojekiti, vachiona kuti ishandiswe zvakanaka uye yapera.
Wedzera maawa ekuvhura:
Nguva yekuvhura inguva iyo plaster inoramba ichishanda isati yanyura. HPMC yakawedzera maawa ayo ekuvhura kuti ipe vashandi vehunyanzvi nevashandi nguva yakasununguka yekushandisa uye yekupedza mabasa.
Wedzera kunamira:
Hunhu hweHPMC hwekugadzira firimu hunobatsira kuvandudza chisungo chiri pakati pepurasita nesubstrate. Izvi zvakakosha zvikuru kuti pave nechokwadi chekuti nzvimbo dzakapurasita dzinogara kwenguva refu uye dzakasimba.
Kuramba kutsemuka:
HPMC inobatsira kuderedza mukana wekutsemuka kweplasta nekuwedzera kuchinjika kwayo uye kusimba kwayo. Izvi zvakakosha kuchengetedza kusimba kwechimiro chepurasta kwenguva refu.
Kuvandudzwa kwerheology:
Rheology inoreva kuyerera uye kushanduka kwezvinhu. HPMC inogona kugadzirisa hunhu hwe rheological hwe gypsum, zvichiita kuti ive nyore kushandisa uye kuenzana.
Kushandiswa kweHPMC mu gypsum:
Gypsum plaster:
Mukugadzira gypsum, HPMC inowanzoshandiswa kuvandudza kuchengetedza mvura, kushanda zvakanaka uye kunamira. Inobatsirawo kudzora nguva yekuisa uye inovandudza mashandiro ese e gypsum-based stucco.
Kupurasita kwakavakirwa pa simende:
HPMC inoshandiswa zvakanyanya mumaplaster akagadzirwa nesimende uko iri chinhu chakakosha pakuwana rheology inodiwa, nguva yekuvhura uye kunamira. Nguva dzekuisa dzakadzorwa dzinobatsira zvikuru kumapurojekiti makuru ekuvaka.
Paste ye lime:
Mafomu eplaster yelime anobatsirwa nekuwedzerwa kweHPMC kuti iwedzere kuchengetedza mvura uye kushanda zvakanaka. Kuenderana kwepolymer nezvinhu zvakagadzirwa nelime kunoita kuti ive sarudzo yakakodzera kumapurojekiti ekare uye ekudzoreredza.
Masisitimu Ekudzivirira Nekupedzisa Kunze (EIFS):
HPMC chikamu chakakosha chekushandiswa kweEIFS, ichibatsira kuvandudza kunamira, kuchinjika uye kuramba kutsemuka. Hunhu hwayo hwekuchengetedza mvura hunonyanya kukosha mumasisitimu ekunze estucco.
mhedziso:
Hydroxypropyl methylcellulose chinhu chinobatsira zvikuru mukugadzira gypsum nekuda kwekubatsira kwayo mukuchengetedza mvura, kushanda zvakanaka, kudzora nguva, kunamira uye kuramba kutsemuka. Ingave ichishandiswa mukugadzira plaster, simende, lime kana kunze kwemadziro, HPMC ine basa guru mukuvandudza mashandiro uye mhando yeplaster. Sezvo maitiro ekuvaka achiramba achichinja, kushanduka-shanduka uye kuvimbika kweHPMC kwakaita kuti ive chikamu chakakosha chekugadzira plaster yemazuva ano, ichivimbisa kugara kwenguva refu uye kubudirira mumapurojekiti akasiyana-siyana ekuvaka.
Nguva yekutumira: Mbudzi-28-2023