HPMC (CAS:9004-65-3), sechinhu chinoshandiswa zvakanyanya mukugadzira zvinhu zvekuvaka, chinonyanya kushandiswa kuchengetedza mvura, kukora uye kuvandudza kushanda kwechigadzirwa chapera. Kuwanda kwekuchengetwa kwemvura ndechimwe chezviratidzo zvikuru paunosarudza HPMC yemhando yepamusoro, saka ngatinyatsoongororai zvinhu zvinokanganisa mwero wekuchengetwa kwemvura kweHPMC.
1. Chiyero cheHPMC, uye mashandiro ayo ekuchengetedza mvura zvinoenderana nehuwandu hwakawedzerwa. Huwandu hweHPMC hunoshandiswa mukuvaka pamusika hunosiyana zvichienderana nemhando. Hunowanzo wedzerwa muzvinhu zvakaita sekubatanidza, kupurasita, dhaka rinorwisa kupwanyika, nezvimwewo. Huwandu hwekuwedzera i2~2.5 KG /MT, huwandu hwekuwedzera hweputty nezvimwewo huri pakati pe2~4.5 KG/MT, glue retiles riri pakati pe3.5~4 KG/MT, uye huwandu hwegrout yetiles i0.3 ~1 KG/MT zvichienderana nenzira dzakasiyana dzekuvaka, hupamhi hwegap uye slurry fineness, dhaka rinozvienzanisa riri pakati pe0.2~0.6 KG/MT, uye ETICS iri pakati pe4~7 KG/MT. Mukati meiyi range, HPMC yakawanda inowedzerwa, mashandiro ekuchengetedza mvura angave ari nani.
2. Kukanganiswa kwenzvimbo yekuvaka. Hunyoro hwemhepo, tembiricha, kumanikidzwa kwemhepo, kumhanya kwemhepo nezvimwe zvinhu zvinokanganisa mwero wekushanduka kwemvura mumota yesimende nezvigadzirwa zvakagadzirwa negypsum. Mumwaka yakasiyana nenzvimbo dzakasiyana, mwero wekuchengetedza mvura wechigadzirwa chimwe chete unosiyana, asi kazhinji, Tembiricha ine simba guru pahuwandu hwekuchengetedza mvura, saka pane maonero ari pamusika: HPMC ine tembiricha yakakwira yegel chigadzirwa chemhando yepamusoro chine mwero wekuchengetedza mvura wakakwira.
3. Maitiro ekugadzira uye kusimba kwe cellulose ether -HPMC. Mapoka e methoxy ne hydroxypropoxy akagoverwa zvakaenzana pamwe chete ne cellulose molecular chain, izvo zvinogona kuwedzera kubatana kwemaatomu e oxygen pa hydroxyl ne ether bonds nemvura. Kugona kwe hydrogen bonding kunoita kuti mvura yakasununguka ibatane nemvura, nokudaro zvichidzora kubuda kwemvura uye kuita kuti mvura irambe yakachengetwa zvakanyanya.
Kana viscosity yeHPMC ikawedzera, mwero wekuchengetedza mvura unowedzerawo, viscosity inosvika padanho rakati, mwero wekuchengetedza mvura unowedzerawo. Inowanzova yakati sandara. Pfupiso yakapfava. Basa rekuchengetedza mvura reHPMC rinokanganiswa nezvinhu zvese. Sarudzo haigone kutsamira pachiratidzo chimwe chete.
Nguva yekutumira: Chivabvu-16-2022