Nzira yekusarudza hydroxypropyl methylcellulose kubva mukuchengetedza mvura

Kuchengetwa kwemvura kubva kuhydroxypropyl methylcellulose chimwe chezvinhu zvakakosha zvehydroxypropyl methylcellulose.Zvinhu zvakadai semhepo tembiricha, tembiricha uye kumhanya kwemhepo zvinokanganisa huwandu hwekuvhuvhuta kwemvura mumatope esimende uye zvigadzirwa zvegypsum.Naizvozvo, mumwaka wakasiyana, kune mimwe misiyano mukuchengetedza mvura kwemaitiro ezvigadzirwa zvine huwandu hwakafanana hwehydroxypropyl methylcellulose yakawedzerwa.

Kazhinji, iyo yakakwirira viscosity yehydroxypropyl methylcellulose, zviri nani kuchengetedza mvura kuchaita, asi mhedzisiro yeviscosity pakuchengetedza mvura ichaderedzwa kana viscosity ichipfuura 100,000 mpa.s.Kune hydroxypropyl methylcellulose ine viscosity inopfuura 100,000, zvakakosha kuwedzera huwandu hwehydroxypropyl methylcellulose kuti iwedzere zvakanyanya chiyero chekuchengetedza mvura.

Muchivakwa chakananga, mvura yekuchengetedza mhedzisiro ye slurry inogona kugadziriswa nekuwedzera kana kudzikisa huwandu hwehydroxypropyl methylcellulose.Hydroxypropyl methylcellulose akatevedzana zvigadzirwa zvinogona kunyatsogadzirisa dambudziko rekuchengetedza mvura pasi pekupisa kwakanyanya.Mumwaka wekushisa kwakanyanya, kunyanya munzvimbo dzinopisa uye dzakaoma uye dzakatetepa-layer kuvaka padivi rezuva, yepamusoro-mhando hydroxypropyl methylcellulose inodiwa kuvandudza kuchengetwa kwemvura kweslurry.

Yepamusoro-mhando hydroxypropyl methylcellulose ine yakanaka kwazvo yakafanana.Iwo methoxyl uye hydroxypropoxyl mapoka akagoverwa zvakaenzana pamwe chete ne cellulose molecular chain.Inogona kuvandudza maatomu eokisijeni pahydroxyl uye ether bond.Kugona kwekubatana kwemvura kuumba hydrogen zvisungo zvinoshandura mvura yemahara kuita mvura yakasungwa, nekudaro kudzora zvinobudirira kubuda kwemvura kunokonzerwa nekupisa kwemamiriro ekunze uye kuwana yakakwirira yekuchengetedza mvura.

Yepamusoro-mhando hydroxypropyl methylcellulose inogona kupararira uye zvinobudirira mudhaka resimende uye gypsum-based zvigadzirwa, kuputira zvese zvakasimba zvimedu, uye kugadzira firimu rakanyorova, uye hunyoro huri mujinga huchaburitswa zvishoma nezvishoma kwenguva yakareba.A hydration reaction inoitika neiyo inorganic gelling zvinhu, nekudaro kuve nechokwadi chekusimba kwechisungo uye kumanikidza kusimba kwechinhu.Naizvozvo, mukupisa kwekupisa kwezhizha kuvakwa, kuitira kuti uwane mhedzisiro yekuchengetedza mvura, zvinodikanwa kuwedzera zvigadzirwa zvemhando yepamusoro hydroxypropyl methylcellulose muhuwandu hwakakwana zvichienderana neformula, zvikasadaro, kusakwana kwemvura, kuderera kwesimba, uye kuputika kuchaitika nekuda. kuomesa zvakanyanya.Zvinetso zvemhando yepamusoro semakomba, makomba nekudonha zvinowedzerawo kuoma kwekuvaka kwevashandi.Sezvo tembiricha inodonha, huwandu hwehydroxypropyl methylcellulose yakawedzerwa inogona kuderedzwa zvishoma nezvishoma, uye iyo yakafanana yekuchengetedza mvura inogona kuwanikwa.