Cellulose ether HPMC mune simende dhaka uye gypsum yakavakirwa slurry, inonyanya kutamba basa rekuchengetedza mvura uye kukora, inogona zvinobudirira kuvandudza kunamatira uye sag kuramba kweslurry.
Tembiricha yemhepo, tembiricha uye mwero wekumanikidza kwemhepo zvinogona kukanganisa chiyero chekubuda kwemvura mumatope esimende uye zvigadzirwa zvegypsum. Mumwaka wakasiyana, iyo mvura yekuchengetedza mhedzisiro yeslurry inogona kugadziriswa nekuwedzera kana kudzikisa huwandu hweHPMC. Mukuvaka kwekupisa kwezhizha zhizha, kuitira kuti uwane mhedzisiro yekuchengetedza mvura, zvinodikanwa kuwedzera HPMC zvigadzirwa muhuwandu hwakakwana maererano nefomati. Zvikasadaro, pachave nekusakwana hydration, kudzikisa simba, kuputika, hollow dhiramu uye kudeuka kunokonzerwa nekunyanya kuomesa, uye mamwe matambudziko emhando. Sezvo tembiricha inoderera, huwandu hweHPMC hunogona kudzikiswa zvishoma nezvishoma, uye iyo yakafanana yekuchengetedza mvura inogona kuwanikwa.
Pane mimwe misiyano uye zvikonzero zvekuchengetedza mvura mhedzisiro yehuwandu hwakafanana hwezvigadzirwa zvakawedzerwa HPMC. Yakanakisa HPMC yakatevedzana zvigadzirwa zvinogona kunyatsogadzirisa dambudziko rekuchengetedza mvura pasi pekushisa kwakanyanya. Mumwaka wekushisa wepamusoro, kunyanya munzvimbo dzinopisa uye dzakaoma uye dzakatetepa kuvakwa padivi rezuva, yemhando yepamusoro HPMC inodiwa kuvandudza kuchengetwa kwemvura kwe slurry. Yemhando yepamusoro HPMC, ayo methoxy uye hydroxypropyl mapoka pamwe ne cellulose molecular cheni yunifomu kugovera, inogona kuvandudza hydroxyl uye ether bond pamaatomu eokisijeni uye mubatanidzwa wemvura hydrogen bond kugona, kuita mvura yemahara kuita mvura yakasanganiswa. Uye zvinobudirira akapararira muslurry uye akaputira ese akasimba particles, hydration reaction ine inorganic cementing zvinhu, uye kuumbwa kwechikamu chekunyorova firimu, mvura mugadziko inoburitswa zvishoma nezvishoma kwenguva yakareba, kuitira kuti inyatso kudzora kubuda kwemvura kunokonzerwa. nepamusoro tembiricha yemamiriro ekunze, kuti uwane kuchengetwa kwemvura kwakanyanya.
Kuchengetwa kwemvura kwezvigadzirwa zveHPMC kunowanzo kukanganiswa nezvinhu zvinotevera:
1. Kufanana kweHPMC: Kuita kwakafanana kweHPMC, methoxy, hydroxypropoxy yunifomu kugovera, kuchengetwa kwemvura kwakakwira.
2 HPMC yekupisa gel tembiricha:Kupisa gel kune yakakwira
tembiricha uye chiyero chekuchengetedza mvura yakakwirira; kana zvisina kudaro, ine mwero wakaderera wekuchengetedza mvura.
3. Iyo viscosity yeHPMC: Kana iyo viscosity yeHPMC ichiwedzera, mwero wekuchengetedza mvura unowedzerawo. Apo iyo
viscosity inosvika pane imwe dhigirii, kuwedzera kwehuwandu hwekuchengetedza mvura kunowanzo kuve munyoro.
4. HPMC zvemukati:Kuwedzera kweHPMC kunowedzera, kunowedzera mwero wekuchengetedza mvura uye zvirinani kuchengetedza kwemvura. Muchikamu che 0.25-0.6%, chiyero chekuchengetedza mvura chakawedzera nokukurumidza nekuwedzera kwekuwedzera. Apo iyo yakawedzerwa yakawanda yakawedzera, maitiro ekuwedzera kwehuwandu hwekuchengetedza mvura kwakava kunonoka.
Nguva yekutumira: Jul-29-2022