Gypsum chinhu chakajairika chekuvaka chinoshandiswa mukati uye kunze kwekushongedza madziro.Iyo inozivikanwa nekusimba kwayo, aesthetics, uye kudzivirira moto.Zvisinei, pasinei nezvikomborero izvi, purasita inogona kukura mitswe nekufamba kwenguva, iyo inogona kukanganisa kuvimbika kwayo uye kukanganisa chitarisiko chayo.Kuputika kweplaster kunogona kuitika nekuda kwezvikonzero zvakasiyana-siyana, kusanganisira zvakatipoteredza, kuvaka kusina kunaka, uye zvinhu zvisina kunaka.Mumakore achangopfuura, hydroxypropyl methylcellulose (HPMC) yekuwedzera yakabuda semhinduro yekudzivirira kuputika plaster.Ichi chinyorwa chinosimbisa kukosha kweHPMC yekuwedzera mukudzivirira kutsemuka kwepurasita uye mashandiro avanoita.
Ndezvipi zvinowedzera HPMC uye zvinoshanda sei?
HPMC zvekuwedzera zvinowanzo shandiswa muindasitiri yekuvaka semaajenti ekuputira uye viscosity modhifita mune akawanda maapplication, kusanganisira plastering.Yakatorwa kubva ku cellulose, inonyungudika mumvura inotonhora uye inopisa uye saka inogona kushandiswa mumhando dzakasiyana dzekuvaka.Kana yakasanganiswa nemvura, HPMC hupfu inoumba gel-sechinhu chinogona kuwedzerwa kumisanganiswa ye stucco kana kuiswa sejira pamusoro pemadziro akadzururwa.Iyo gel-senge mameseji eHPMC inobvumira kuti ipararire zvakaenzana, kudzivirira yakawandisa evaporation yehunyoro uye kuderedza njodzi yekutsemuka.
Kubatsira kwakakosha kweHPMC zvinowedzerwa kugona kudzora hydration mwero wegypsum, uchibvumira nguva yekumisikidza yakanaka.Izvi zvinowedzera zvinogadzira chipingamupinyi chinononoka kuburitswa kwemvura, nekudaro kuderedza mukana wekuoma nguva isati yakwana uye kuputika kunotevera.Mukuwedzera, HPMC inogona kuparadzira mabhuru emhepo mumusanganiswa wegypsum, iyo inobatsira kuvandudza kushanda kwayo uye inoita kuti zvive nyore kushandisa.
Dzivirira kutsemuka kwepurasita uchishandisa HPMC zvinowedzera
Kuomesa shrinkage
Chimwe chezvikonzero zvikuru zvekuputika kwepurasita ndiko kuomesa shrinkage yepasi pepurasita.Izvi zvinoitika kana stucco ichioma uye ichiderera, zvichiita kuti pave nekukakavadzana kunokonzera kutsemuka.HPMC additives inogona kubatsira kuderedza kuomeswa shrinkage nekudzikisa mwero wekuti mvura inoputika kubva mumusanganiswa wegypsum, zvichikonzera kugovera kwemvura.Apo musanganiswa wepurasita une hunyoro hunoenderana, chiyero chekuomeswa chakafanana, kuderedza dambudziko rekuputika uye kupera.
Kusanganisa kusina kunaka
Muzviitiko zvakawanda, plaster isina kusanganiswa ichaita kuti pave nenzvimbo dzisina simba dzinogona kuputsika nyore.Kushandisa HPMC yekuwedzera mune gypsum musanganiswa kunogona kubatsira kuvandudza zvivakwa zvekuvaka uye kuita kuti maitiro ekuvaka ave akapfava.Izvi zvinowedzera zvinoparadzira mvura zvakaenzana mukati mepurasita, zvichibvumira simba risingagumi uye kuderedza dambudziko rekuputika.
kushanduka kwekushisa
Kunyanya kupisa kwekushisa kunogona kukonzera kuti stucco iwedzere uye chibvumirano, zvichiita kuti pave nekukakavadzana kunogona kukonzera kutsemuka.Kushandiswa kweHPMC additives kunoderedza mwero wekubuda kwemvura, nekudaro kunonotsa nzira yekurapa uye kuderedza njodzi yekukurumidza kuwedzera kwemafuta.Kana plaster yaoma zvakaenzana, inoderedza mukana wenzvimbo dzenzvimbo kuti dziomese, zvichikonzera kukakavara kunogona kukonzera kutsemuka.
Nguva isina kukwana yekurapa
Zvichida chinhu chinonyanya kukosha mukupwanya plaster haina kukwana nguva yekurapa.HPMC yekuwedzera inononoka kuburitswa kwemvura kubva musanganiswa wegypsum, nekudaro ichiwedzera nguva yekumisikidza.Nguva refu yekurapa inovandudza kuenderana kweiyo stucco uye kuderedza kutaridzika kwemavara asina simba anogona kutsemuka.Pamusoro pezvo, HPMC zvinowedzera zvinobatsira kugadzira chipingamupinyi kurwisa mamiriro ekunze akanyanya anogona kukonzera kutsemuka munzvimbo dzakavhurika.
mukupedzisa
Kutsemuka mustucco kwakajairika muindasitiri yekuvaka uye kunogona kutungamirira kukugadzirisa kunodhura uye mavanga asina kunaka.Nepo pane zvinhu zvakawanda zvinogona kukonzera makatsemuka mupurasita, kushandisa HPMC additives ndiyo inoshanda mhinduro kudzivirira makatsemuka.Basa rekuwedzera kweHPMC ndere kuumba chipingamupinyi chinodzivirira kuwanda kwehunyoro uye kunoderedza kuomeswa kwemvura uye kuwedzera kwemafuta.Izvi zvinowedzerawo zvinovandudza kushanda, zvichikonzera kusimba kunoenderana uye nani plaster mhando.Nekuwedzera HPMC zvinowedzerwa kune plaster musanganiswa, vavaki vanogona kuve nechokwadi chekugara, inotaridzika inoyevedza nzvimbo.
Nguva yekutumira: Sep-26-2023