Iye zvino vanhu vazhinji havazivi zvakawanda nezve hydroxypropyl starch ether. Vanofunga kuti pane musiyano mudiki pakati pehydroxypropyl starch ether neyakajairika starch, asi handizvo. Huwandu hwe hydroxypropyl starch ether inoshandiswa muzvigadzirwa zvedhaka idiki kwazvo, uye huwandu hwekuwedzera hwepolar hunogona kuwana yakanaka mhando mhedzisiro.
Hydroxypropyl starch ether (HPS) ipfu chena yakachena inowanikwa nekugadzirisa zvirimwa zvechisikigo, zvakanyanya etherified, uye yobva yapfapfaidza-yakaomeswa, isina plasticizers. Yakasiyana zvachose kubva kune yakajairwa starch kana yakagadziridzwa starch.
Uye hydroxypropyl methyl cellulose, inozivikanwawo se hypromellose, hydroxypropyl methyl red vhitamini ether, ndeye kushandisa yakanyanya yakachena donje cellulose seyakagadzirwa, uye kuibata nelye pa 35-40 ° C kwehafu yeawa, Svina, kupwanya cellulose, uye zera nemazvo pa35 ° C, kuitira kuti avhareji yefiberization inowanikwa mukati meiyo alkali dhigirii yakawanikwa. Isa iyo alkali fiber mu kettle ye etherification, wedzera propylene oxide uye methyl chloride munhevedzano, uye etherify iyo pa50-80 ° C kwemaawa mashanu, uye yakanyanya kudzvanywa inenge 1.8MPa. Zvadaro wobva wawedzera huwandu hwakakodzera hwehydrochloric acid uye oxalic acid kumvura inopisa pa 90 ° C kuti usuke zvinhu kuti uwedzere vhoriyamu, wozoibvisa ne centrifuge, uye pakupedzisira uigeze kakawanda kuti isarerekera. Inoshandiswa zvakanyanya mukuvaka, indasitiri yemakemikari, pendi, mushonga, indasitiri yemauto uye mamwe minda, zvichiteerana semugadziri wemufirimu, binder, dispersant, stabilizer, thickener, nezvimwe.
Hydroxypropyl starch ether inogona kushandiswa semusanganiswa wesimende-based zvigadzirwa, gypsum-based zvigadzirwa uye lime calcium zvigadzirwa. Iine kugarisana kwakanaka nemamwe masanganiswa ekuvaka. Inoshandiswa pamwe chete nehydroxypropyl methylcellulose ether HPMC, inogona kuderedza chiyero che hydroxypropyl methylcellulose (kazhinji kuwedzera 0.05% yeHPS inogona kuderedza chiyero cheHPMC ne20% -30%), uye inogona kutamba kuwedzera kwekuita , kukurudzira chimiro chemukati, nekugadzirisa kushanda zvakanaka uye kupikisa zviri nani.
Nguva yekutumira: Kubvumbi-24-2023