Pari zvino vanhu vazhinji havazivi zvakawanda nezve hydroxypropyl starch ether. Vanofunga kuti hapana musiyano mukuru pakati pe hydroxypropyl starch ether ne starch yakajairika, asi handizvo. Huwandu hwe hydroxypropyl starch ether hunoshandiswa muzvigadzirwa zve mortar hushoma kwazvo, uye huwandu hwe polar hunogona kuita mhedzisiro yakanaka.
Hydroxypropyl starch ether (HPS) ipfu chena yakatsetseka inowanikwa nemiti yechisikigo inogadziriswa, inopiswa zvakanyanya, yozoomeswa nespray, isina mapurasitiki. Yakasiyana zvachose nestarch yakajairika kana starch yakagadziriswa.
Uye hydroxypropyl methyl cellulose, inozivikanwawo se hypromellose, hydroxypropyl methyl red vitamin ether, inofanira kushandisa cotton cellulose yakachena kwazvo sezvinhu zvakabikwa, uye yoiisa ne lye pa 35-40 ° C kwehafu yeawa. Svina, pwanya cellulose, uye gadzira zvakanaka pa 35 ° C, kuitira kuti avhareji ye polymerization ye alkali fiber yakawanikwa ive mukati mehuwandu hunodiwa. Isa alkali fiber mu etherification kettle, wedzera propylene oxide ne methyl chloride zvakatevedzana, uye iite etherify pa 50-80 ° C kwemaawa mashanu, uye kumanikidzwa kwakanyanya kuri 1.8MPa. Wobva wawedzera huwandu hwakakodzera hwe hydrochloric acid ne oxalic acid mumvura inopisa pa 90 ° C kuti usuke zvinhu kuti uwedzere vhoriyamu, wozoibvisa nemvura ne centrifuge, uye wozoigeza kakawanda kusvika yanyatsobuda. Inoshandiswa zvakanyanya mukuvaka, indasitiri yemakemikari, pendi, mushonga, indasitiri yemauto nedzimwe nzvimbo, zvichiteerana semumiriri wekugadzira mafirimu, binder, dispersant, stabilizer, thickener, nezvimwewo.
Hydroxypropyl starch ether inogona kushandiswa sekusanganiswa kwezvinhu zvakagadzirwa nesimende, zvigadzirwa zvakagadzirwa negypsum uye zvigadzirwa zvecalcium ye lime. Inoenderana zvakanaka nezvimwe zvinhu zvekuvaka. Kana ikashandiswa pamwe chete nehydroxypropyl methylcellulose ether HPMC, inogona kuderedza huwandu hwehydroxypropyl methylcellulose (kazhinji kuwedzera 0.05% yeHPS kunogona kuderedza huwandu hweHPMC neinenge 20%-30%), uye inogona kuita kuti chimiro chemukati chiwedzere kukora, nekuramba kuri nani kutsemuka uye kushanda kuri nani.
Nguva yekutumira: Kubvumbi-24-2023