Chii chiri kushandiswa kweHPMC mukuvaka?

Hydroxypropyl methylcellulose (HPMC) imhando ye cellulose ether inoshandiswa zvakanyanya muindasitiri yekuvaka. Ipolymer inonyungudika nemvura inoshandiswa sekuwedzera mune zvakawanda zvekuvaka, senge simende, kongiri, dhaka, uye plaster. HPMC inoshandiswa mukuvaka kuvandudza zvivakwa zvezvinhu izvi, sekushanda, kuchengetedza mvura, uye kunamatira.

HPMC i polymer yakagadzirwa kubva ku cellulose, inova polima yechisikigo inowanikwa muzvirimwa. Inogadzirwa nekuita cellulose nepropylene oxide uyezve hydroxypropylating iyo. Iyo hydroxypropylation process inowedzera hydroxyl mapoka kune cellulose mamorekuru, ayo anoita kuti awedzere kunyungudika mumvura. Izvi zvinoita kuti HPMC ive yekuwedzera yakakura yezvinhu zvekuvaka, sezvo inogona kuvandudza zvimiro zvezvinhu izvi pasina kushandura chimiro chazvo chemakemikari.

HPMC inogona kushandiswa mumhando dzakasiyana dzekuvaka, semendi, kongiri, dhaka, uye plaster. Mune simende, HPMC inogona kushandiswa kuvandudza kushanda kwemusanganiswa, pamwe nekudzikisa kudiwa kwemvura kune yakapihwa kuenderana. Izvi zvingabatsira kuderedza simende inodiwa pabasa rakapiwa, uyewo kuderedza mari yebasa racho. HPMC inogona zvakare kushandiswa mukongiri kuvandudza kushanda uye kuchengetwa kwemvura yemusanganiswa. Izvi zvinogona kubatsira kuderedza kuwanda kwemvura inodiwa pakuenderana kwakapihwa, pamwe nekuderedza mutengo webasa.

Mudhaka uye plaster, HPMC inogona kushandiswa kuvandudza kunamatira kwedhaka kana plaster kune substrate. Izvi zvinogona kubatsira kuderedza nguva uye kushanda nesimba kunodiwa kuisa dhaka kana plaster, pamwe nekuderedza mutengo webasa. HPMC inogona zvakare kushandiswa kuvandudza kuchengetwa kwemvura kwedhaka kana plaster, izvo zvinogona kubatsira kuderedza kuwanda kwemvura inodiwa pakuenderana kwakapihwa.

Pakazere, HPMC inogoneka uye inobatsira yekuwedzera yezvinhu zvekuvaka. Inogona kushandiswa kuvandudza kushanda, kuchengetedza mvura, uye kunamatira simende, kongiri, dhaka, uye plaster. Izvi zvinogona kubatsira kuderedza nguva nenhamburiko inodikanwa nokuda kwebasa rakapiwa, pamwe chete nokuderedza mutengo webasa racho.