Mune simende dhaka uye gypsum-based slurry,hydroxypropyl methylcelluloseinonyanya kuita basa rekuchengetedza mvura uye kukora, izvo zvinogona kunyatso kuvandudza kubatana uye sag kuramba kwe slurry.Zvinhu zvakadai sekushisa kwemhepo, tembiricha uye kudzvanywa kwemhepo zvinokanganisa chiyero chekubuda kwemvura mudhaka resimende uye zvigadzirwa zvegypsum.Naizvozvo, mumwaka wakasiyana, kune mimwe misiyano mukuchengetedza mvura kwemaitiro ezvigadzirwa zvine huwandu hwakafanana hwehydroxypropyl methylcellulose yakawedzerwa.Mukuvaka chaiko, iyo yekuchengeta mvura mhedzisiro yeslurry inogona kugadziriswa nekuwedzera kana kudzikisa huwandu hweHPMC hwakawedzerwa.Kuchengetwa kwemvura kwemethyl cellulose ether pakupisa kwepamusoro chiratidzo chakakosha chekusiyanisa kunaka kwemethyl cellulose ether.
Yakanakisa hydroxypropyl methylcellulose akatevedzana zvigadzirwa zvinogona kunyatsogadzirisa dambudziko rekuchengetedza mvura pakupisa kwakanyanya.Mumwaka wekushisa kwakanyanya, kunyanya munzvimbo dzinopisa uye dzakaoma uye dzakatetepa-layer kuvakwa padivi rezuva, yemhando yepamusoro HPMC inodiwa kuvandudza kuchengetwa kwemvura kweslurry.
Yepamusoro-mhando HPMC, ine kufanana kwakanaka kwazvo, mapoka ayo methoxy uye hydroxypropoxy akagoverwa zvakaenzana pamwe chete ne cellulose molecular chain, iyo inogona kuvandudza kugona kwemaatomu eokisijeni pane hydroxyl uye ether zvisungo kuti zvibatane nemvura kugadzira hydrogen zvisungo . mvura yakasununguka inova yakasungwa mvura, kuitira kuti inyatso kudzora kubuda kwemvura kunokonzerwa nekupisa kwemamiriro ekunze uye kuwana mvura yakakwirira yekuchengetedza.Mvura inodiwa pakuita hydration kuitira kuisa simende zvinhu zvakaita sesimende negypsum.Huwandu hwakakodzera hweHPMC hunogona kuchengetedza mvura mudhaka kwenguva yakakwana kuti ibvumire kugadzika uye kuomesa maitiro kuenderera.
Huwandu hweHPMC hunodiwa kuwana yakakwana yekuchengeta mvura hunoenderana ne:
1. The absorbency of the base layer
2. Kuumbwa kwedhaka
3. Kukora kwedhaka
4. Mvura inodiwa yedhaka
5. Nguva yekugadzika kwesimende zvinhu
High-quality hydroxypropyl methylcellulose inogona kufanana uye inobudirira yakaparadzirwa mudhaka resimende uye gypsum-based products, uye inoputira zvinhu zvose zvakasimba, uye inoumba firimu rekunyorova, uye hunyoro huri mujinga hunobudiswa zvishoma nezvishoma kwenguva yakareba., uye iyo hydration reaction inoitika neiyo inorganic cementitious zvinhu, nekudaro kuve nechokwadi chekubatanidza kusimba uye kumanikidza kusimba kwechinhu.
mufananidzo
Naizvozvo, mukupisa kwekupisa kwezhizha kuvaka, kuitira kuti uwane mhedzisiro yekuchengetwa kwemvura, zvinodikanwa kuti uwedzere mhando yepamusoro yeHPMC zvigadzirwa muhuwandu hwakakwana maererano neformula, kana zvisina kudaro, pachava nekusakwana hydration, kuderedza simba, kuputika, kuchera nekudonha kunokonzerwa nekunyanya kuoma.Kunowedzerawo kuoma kwekuvaka kwevashandi.Sezvo tembiricha inodzikira, huwandu hwekuwedzera hweHPMC hunogona kudzikiswa zvishoma nezvishoma, uye iyo yakafanana yekuchengetedza mvura inogona kuwanikwa.
Nguva yekutumira: Oct-20-2022