Kazhinji, mune synthesis ye hydroxyprupyletl methylcellose, iyo cotton cellalose inobatwa neAlkali Solution Isa iyo alkali fiber muEtheritification kettle, wedzera profylene oxide uye methyl chloride mukutendeuka, uye ℃ Wobva wawedzera huwandu hwakakodzera hwe hydrochloric acid uye oxalic acid kumvura inopisa pa 90 ° c kugeza zvinyorwa kuti uwedzere vhoriyamu. Dehydrate necentrifuge. Geza kusvikira kusarerekera, kana zvirimo mune zvemvura mune zvisingasviki 60%, chiomesa nemhepo inopisa pa130 ° C kusvika pasi pe5%.
Alkalization: Iyo yakadzika yakanatswa cotton mushure mekuvhurwa inowedzerwa mune inert solvent, uye yakagadziriswa mvura yakapfava yekupinza manyorerwe emamiririri ekuzadza mumabhuku emumiririri uye anovandudza kufanana kwekuchinja kwekuchinja. Iyo Alkali inoshandiswa muAlkalization is simbi hydroxide kana organic chigadziko. Mari yealkali yakawedzerwa (nehuremu, iyo imwe chete pazasi) ndeye 0.1-0.6 times iyo yakanatswa machira, uye huwandu hwemvura nyoro ndeye 0.3-1 times iyo yekara yakanatswa; Iyo inert solvent isanganiswa yedoro uye hydrocarbon, uye huwandu hweInert solvent yakawedzerwa yakanatswa machira. Nguva dzegumi neshanu: Iyo inert solvent inogonawo kuve doro ne3-5 kabhoni kabhoni maatomu (senge doro, propanh), propanol), acetone. Inogona zvakare kuve aliphatic hydrocarbons uye inonhuhwirira hydrocarbons; Tembiricha inofanirwa kudzorwa mukati me0-4 ° C panguva yeayo; Nguva yea alkalization iri anenge 1hr. Kugadziriswa kwekushisa uye nguva kunogona kutsanangurwa maererano nezvinodiwa zvezvinhu uye chigadzirwa.
Eteralization: Mushure mekurapwa kweAlkalization, pasi pePuum mamiriro, erirai inoitwa nekuwedzera iyo yekuwedzera mumiririri, uye iyo yekuzunza mumiririri ari profyle oxide. Kuti uderedze iyo yekushomeka kweiyo gadziriro yekutsauka, iyo yekuzadzisa mumiririri akawedzerwa kaviri panguva yekutsvagira.
Post Nguva: Kukadzi-20-2025