Hydroxypropyl methylcellulose (HPMC) ndeye multifunctional polymer inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana kusanganisira kuvaka.Mumashandisirwo egypsum, HPMC inoshanda sechinhu chakakosha chekuwedzera chine huwandu hwemabhenefiti anobatsira kuvandudza kuita kwese uye kunaka kwegypsum maumbirwo.
Nhanganyaya yehydroxypropyl methylcellulose:
Hydroxypropyl methylcellulose is a semi-synthetic polymer inotorwa kubva ku cellulose, yakasikwa polima inowanikwa muzvirimwa.HPMC inogadzirwa nekurapa cellulose nepropylene oxide uye methyl chloride, zvichikonzera makomisheni ane zvivakwa zvakasimudzirwa zvichienzaniswa neselulosi yemubereki.Iyo dhigirii yekutsiva (DS) yehydroxypropyl uye methoxy mapoka pane cellulose musana inosarudza chaiwo maitiro eHPMC.
Zvinoumba HPMC:
Kuchengeta mvura:
HPMC ine zvivakwa zvekuchengetedza mvura zvakanaka uye inogona kugadzira firimu rakatetepa pamusoro pegypsum kuti inonoke kubuda kwemvura.Izvi zvakakosha kuti uwane yakakwana yekurapa mamiriro uye kudzivirira kuoma kusati kwasvika kweiyo stucco.
Kuvandudza machinability:
Kuwedzerwa kweHPMC kunowedzera kushanda kwepurasita, zvichiita kuti zvive nyore kusanganisa, kuisa uye kupararira.Kuvandudzwa kunoenderana kunobatsira kupa zvirinani kunamatira uye kufukidzira pane dzakasiyana siyana.
Inodzorwa kuseta nguva:
HPMC inobvumira kutonga kukuru pamusoro pekugadzika nguva yepurasita.Nekugadzirisa zvirimo zveHPMC, vagadziri vanogona kugadzirisa nguva dzekuseta kuti vasangane nezvinodiwa zveprojekiti, kuve nechokwadi chekushandisa kwakakwana uye kupera.
Wedzera maawa ekuvhura:
Nguva yekuvhura ndiyo nguva yekuti plaster inoramba ichishanda isati yagadzika.HPMC yakawedzera maawa ayo ekuvhura kuti ipe mhizha nevashandi nguva yakasununguka yekunyorera uye kupedza mabasa.
Wedzera adhesion:
Iyo firimu-inogadzira zvimiro zveHPMC inobatsira kuvandudza chisungo pakati pepurasita uye substrate.Izvi zvinonyanya kukosha kuve nechokwadi chekugara kwenguva refu uye kusimba kwenzvimbo dzakaiswa plastered.
Crack resistance:
HPMC inobatsira kuderedza mukana wekutsemuka mupurasita nekuwedzera kushanduka kwayo uye simba.Izvi zvakakosha kuchengetedza kutendeseka kwechimiro chepasi rakapurasitwa pamusoro penguva refu.
Yakavandudzwa rheology:
Rheology inoreva kuyerera uye deformation maitiro emidziyo.HPMC inogona kushandura rheological zvimiro zvegypsum, ichipa iyo inodiwa kuenderana kuitira nyore kushandisa uye kuyera.
Kushandiswa kweHPMC mugypsum:
Gypsum plaster:
Mukugadzirwa kwegypsum, HPMC inowanzoshandiswa kuvandudza kuchengetedza kwemvura, kushanda uye kunamatira.Inobatsirawo kudzora kuseta nguva uye inovandudza kuita kwese kwegypsum-based stucco.
Cement-based plastering:
HPMC inoshandiswa zvakanyanya mune simende-based plasters uko iri kiyi yekuwedzera kuti uwane inodiwa rheology, yakavhurika nguva uye adhesion.Nguva dzokuronga dzinodzorwa dzinobatsira zvikuru pamabasa makuru okuvaka.
Lime paste:
Lime plaster maumbirwo anobatsirwa nekuwedzera kweHPMC kusimudzira kuchengetwa kwemvura uye kushanda.Iko kuenderana kwepolymer ne lime-based zvinhu zvinoita kuti ive sarudzo yakakodzera yenhaka uye mapurojekiti ekudzoreredza.
Exterior Insulation uye Finishing Systems (EIFS):
HPMC chikamu chakakosha cheEIFS maapplication, inobatsira kunatsiridza kunamatira, kuchinjika uye kutsemuka kuramba.Zvinhu zvayo zvekuchengetedza mvura zvinonyanya kukosha mune zvekunze stucco systems.
mukupedzisa:
Hydroxypropyl methylcellulose ndeyekuwedzerwa kwakakwana mukugadzirwa kwegypsum nekuda kwekubatsira kwayo kwakasiyana-siyana mukuchengetedza mvura, kushanda, kuisa nguva yekutonga, kunamatira uye kuramba kwekuputika.Ingave ichishandiswa mupurasita, simende, lime kana ekunze madziro ekudzivirira masisitimu, HPMC inoita basa rakakosha mukuvandudza kuita kwese uye kunaka kwepurasita.Sezvo maitiro ekuvaka ari kuramba achishanduka, kuita kwakasiyana-siyana uye kuvimbika kweHPMC kwaita kuti ive chinhu chakakosha chemazuva ano maumbirwo epurasita, kuve nechokwadi chekugara kwenguva refu uye kubudirira mune akasiyana mapurojekiti ekuvaka.
Nguva yekutumira: Nov-28-2023