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 nesipo pa 35-40 ° C kwehafu yeawa, Svina, kupwanya cellulose, uye zera zvakanaka pa 35 ° C, kuitira kuti avhareji yedhigirii yepolymerization yeakawanikwa alkali fiber iri mukati meiyo inodiwa. 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 dosi ye hydroxypropyl methylcellulose (kazhinji kuwedzera 0.05% yeHPS inogona kuderedza dosi yeHPMC ne20% -30%), uye inogona kutamba kuwedzera simba, kukurudzira mukati. chimiro, nekuramba kuri nani kutsemuka uye kushanda kwakagadziridzwa.
Nguva yekutumira: Kubvumbi-24-2023