HPMC yekuvaka

Hydroxypropyl methyl cellulose (HPMC) isiri-ionic cellulose ether inotorwa kubva kune yakasikwa cellulose. Inoshandiswa zvakanyanya mukuvaka seyakakora mumiriri, binder, dispersant, emulsifier, film-forming agent, inodzivirira colloid, uye inomisa mumiriri.

HPMC ichena kusvika kuchena, isina kunhuwa, isinganakidze, uye isina chepfu. Inonyungudika mumvura inotonhora uye inoumba mhinduro yakajeka, ine viscous. Iyo hainyungudika muorganic solvents senge ethanol, acetone, uye benzene. HPMC is an anionic polysaccharide inoumbwa nelinear cheni yeD-glucose mayuniti akabatanidzwa ne β-1,4-glycosidic bond. Iyo inogadzirwa nekuita kwemethyl chloride uye hydroxypropyl chloride ine cellulose.

HPMC inoshandiswa zvakanyanya mukuvaka nekuda kwehunhu hwayo hwakanaka. Inogona kushandiswa seyakakora mumiriri kuwedzera viscosity yeaqueous mhinduro uye kuvandudza kushanda kwe simende nedhaka. Inogona zvakare kushandiswa sebhainda kuvandudza kunamatira simende uye dhaka kune substrates. HPMC inogona zvakare kushandiswa seanoparadzira kuderedza kudiwa kwemvura yesimende nedhaka uye kuvandudza kushanda kwavo. Pamusoro pezvo, HPMC inogona kushandiswa senge emulsifier kuvandudza kugadzikana kwesimende uye musanganiswa wedhaka.

HPMC inogona zvakare kushandiswa semugadziri wekugadzira firimu kuvandudza kusamira kwemvura simende nedhaka. Inogonawo kushandiswa sechidziviriro colloid kuderedza kushushikana kwepamusoro kwe simenti uye dhaka uye kuvandudza kushanda kwavo. Chekupedzisira, HPMC inogona kushandiswa semumiriri wekumisa kusimudzira kumiswa kwesamende uye musanganiswa wedhaka.

HPMC inoshanda uye inoshanda zvakasiyana-siyana yekuwedzera yezvishandiso zvekuvaka. Inogona kuvandudza kushanda kwesimende nedhaka, kuderedza kudiwa kwavo kwemvura, kunatsiridza kunamatira kwavo kune substrates, uye kunatsiridza kusamira kwavo kwemvura. Pamusoro pezvo, inogona kushandiswa se emulsifier, firimu-inogadzira mumiriri, inodzivirira colloid, uye inomisa mumiriri. HPMC ndeye hupfumi uye yakachengeteka yekuwedzera iyo inogona kushandiswa kuvandudza mashandiro esimende uye dhaka musanganiswa.