introduce
Indasitiri yekuvaka yakafambira mberi zvakanyanya mumakore achangopfuura, nekuwedzera kutarisisa mukuvandudza mashandiro, kusimba uye kusimba kwezvinhu zvekuvaka.Hydroxypropyl methylcellulose (HPMC) yave yekuwedzera yakawanda mune gypsum poda-yakavakirwa zvekuvakisa, ichipa akawanda mabhenefiti anobatsira kuvandudza huwandu hwese uye kugona kwemapurojekiti ekuvaka.
1. Kuvandudza kushanda
Imwe yemabhenefiti makuru ekuwedzera HPMC kune plaster kuvaka ndiko kuvandudzwa kunoshamisa mukushanda.HPMC inoita seye rheology modifier kuti iwedzere simba rekubata-mvura yemusanganiswa wegypsum.Izvi zvinoguma nekugadzikana, kudzoreka kunoenderana kuri nyore kushandisa uye kunoderedza huwandu hwebasa rinodiwa panguva yekuvaka.
2. Kuwedzera kunamatira
HPMC inobatsira kuvandudza zvivakwa zvekubatanidza zvegypsum musanganiswa, kusimudzira zvirinani kubatana pakati pezvinhu uye akasiyana substrates.Izvi zvinonyanya kukosha mukupurasita nekupa zvikumbiro apo kunamatira kwakasimba kunokosha pakugara kwenguva refu uye kugadzikana kwenzvimbo yakapedzwa.Iyo yakagadziridzwa chisungo zvakare inoderedza mukana wekutsemuka uye delamination.
3. Kuchengeta mvura
Kuchengetwa kwemvura chinhu chakakosha mune gypsum-based kuvaka zvinhu.HPMC inonyatso kuwedzera simba rekubata mvura yemusanganiswa, kudzivirira kuoma nekukurumidza uye kuve nechokwadi chekuwedzera kunoenderana hydration maitiro.Izvi zvinonyanya kubatsira munzvimbo dzine shanduko yemamiriro ekunze, sezvo inopa hwindo rakakura rekuvaka nekupedzisa.
4. Dzora nguva ye coagulation
Gypsum-yakavakirwa zvinhu zvinowanzoda yakatarwa nguva yekumisikidza kuti uwane yakaringana simba uye kusimba.HPMC inovimbika retarder inobvumira kudzora kurinani kwekuseta nguva.Izvi zvinonyanya kubatsira kumapurojekiti makuru ekuvaka uko nguva iri yezvakakosha, zvichipa kuchinjika uye nyore kushandisa.
5. Mutswe kuramba
Kutsemuka idambudziko rakajairika mukuvaka uye HPMC inoita basa rakakosha mukudzikamisa dambudziko iri.Nekuwedzera kuchinjika kwese uye kusimba kwekusimba kweiyo gypsum musanganiswa, HPMC inobatsira kuderedza kuumbwa kwekutsemuka, kuve nechokwadi chehupenyu hurefu uye kurongeka kwechivakwa chakapedzwa.
6. Kuvandudza kusimba
Kubatanidza HPMC mu gypsum powder chimiro kunowedzera zvakanyanya kusimba kwechigadzirwa chekupedzisira.Kuwedzeredzwa kunamatira, kuderedzwa kutsemuka uye kudzorwa kuseta nguva kusanganisa kugonesa zvinhu zvekuvaka kuti zvimire zvakatipoteredza uye kushushikana kwechimiro, zvichikonzera hupenyu hurefu hwebasa.
7. Kushandisa zvakasiyana-siyana
Kuenderana kweHPMC neakasiyana ekuwedzera uye zvekuvaka zvinoita kuti ive yakawanda.Inobatanidza zvisina musono muplaster-based formulations uye ine zvakawanda zvakasiyana-siyana zvekushandisa zvinosanganisira plastering, skimming, majoint compounds uye self-leveling underlayments.Izvi zvakasiyana-siyana zvinoita kuti HPMC ive sarudzo yekutanga kune makondirakiti uye vavaki vachitsvaga akavimbika, anochinjika ekuvaka mhinduro.
8. Kugara
Sezvo indasitiri yekuvaka ichiyedza kuwana kuchengetedzwa kwakanyanya, kushandiswa kwezvakatipoteredza zvinowedzera kwave kwakakosha.HPMC inotorwa kubva kune inovandudzwa chirimwa masosi uye inopindirana neiyo indasitiri zvinangwa zvekusimudzira.Iyo biodegradability uye kuderera kwezvakatipoteredza kunoita kuti ive sarudzo-inoshamwaridzika yezvirongwa zvekuvaka zvine chinangwa chekudzikisa kabhoni tsoka.
9. Hunhu hwakagadzikana
Iko kushandiswa kweHPMC mukuvaka plaster kunovimbisa kuwirirana uye kufungidzira mhando yechigadzirwa chekupedzisira.Kudzora nguva yakatarwa, yakagadziridzwa kushanda uye kuwedzeredzwa kunamatira kunofambisa yunifomu application, kuderedza mukana wekukanganisa uye kusawirirana mune yakapedzwa chimiro.
10. Mutengo-kubudirira
Nepo mutengo wekutanga ungave wekufunga, mabhenefiti enguva refu ekushandisa HPMC mukuvaka plaster anowanzo pfuura mari.Kuwedzera kusimba uye kuderedzwa kudiwa kwekugadzirisa kana kugadzirisa kunobatsira kuchengetedza mutengo wenguva refu, zvichiita kuti ive sarudzo ine hungwaru mune zvemari kumapurojekiti ekuvaka uko kwakakosha kurarama kwenguva refu.
mukupedzisa
Mukupedzisa, kuiswa kwehydroxypropyl methylcellulose (HPMC) mukuvaka guruva regypsum kunounza akawanda mabhenefiti kusangana neanogara achichinja zvinodiwa zveindasitiri yekuvaka.Kubva pakuvandudzwa kwekushanda uye kunamatira kune yakadzorwa kuseta nguva uye yakagadziridzwa kusimudzira, HPMC inoita basa rakakosha mukuvandudza mashandiro uye kunaka kwegypsum-based zvivakwa zvekuvaka.Sezvo indasitiri ichienderera mberi nekugashira hunyanzvi, HPMC inomira pachena seyakavimbika uye inogoneka yekuwedzera iyo inobatsira mukubudirira kwemapurojekiti akasiyana ekuvaka pasirese.
Nguva yekutumira: Zvita-04-2023