Cellulose ethers zvinhu zvakasiyana-siyana zvinoshandiswa mumaindasitiri akasiyana siyana anosanganisira kuvaka, mishonga uye chikafu.Nzira yekugadzira cellulose ether yakaoma zvikuru, inosanganisira matanho akawanda, uye inoda hunyanzvi hwakawanda uye midziyo yakakosha.Muchikamu chino, tichakurukura zvakadzama maitiro ekugadzira cellulose ethers.
Nhanho yekutanga mukugadzirwa kwe cellulose ether ndiko kugadzirira kwezvinhu zvakasvibiswa.Iyo mbishi inoshandiswa kugadzira cellulose ethers inowanzobva muhuni pulp uye tsvina donje.Iyo huni yehuni inoputirwa uye inoongororwa kubvisa chero marara makuru, nepo donje tsvina inogadziriswa kuita pulp yakanaka.Iyo pulp inoderedzwa muhukuru nekukuya kuti iwane hupfu hwakatsetseka.Hupfu hupfu hwehuni nedonje remarara zvinozosanganiswa pamwe chete muzvikamu zvakati zvichienderana nezvinodiwa zvechigadzirwa chekupedzisira.
Nhanho inotevera inosanganisira kugadzirwa kwemakemikari eiyo yakasanganiswa feedstock.Iyo pulp inotanga kurapwa nealkaline solution (kazhinji sodium hydroxide) kuti iparadze iyo fibrous chimiro che cellulose.Iyo cellulose inokonzeresa inozobatwa nesolvent senge kabhoni disulfide kugadzira cellulose xanthate.Kurapa uku kunoitwa mumatangi ane kuenderera mberi kwepulp.Iyo cellulose xanthate mhinduro inozoburitswa kuburikidza neextrusion mudziyo kuita filaments.
Mushure mezvo, iyo cellulose xanthate filaments yakarukwa mubhavhu rine dilute sulfuric acid.Izvi zvinoguma nekuvandudzwa kwe cellulose xanthate maketani, kugadzira cellulose fibers.Mafiibha ecellulose achangobva kuumbwa anogezwa nemvura kuti abvise tsvina isati yaitwa bleach.Iyo bleaching process inoshandisa hydrogen peroxide kuchena shinda dze cellulose, dzinozogezwa nemvura dzosiiwa kuti dziome.
Mushure mekunge ma cellulose fibers aomeswa, vanopinda maitiro anonzi etherification.Iyo etherification process inosanganisira kuunzwa kwemapoka ether, senge methyl, ethyl kana hydroxyethyl mapoka, mu cellulose fiber.Iyo nzira inoitwa uchishandisa maitiro eetherification agent uye acid catalyst muhupo hwe solvent.Magadzirirwo anowanzoitwa pasi pemamiriro akanyatsodzorwa etembiricha uye kumanikidza kuti ive nechokwadi chepamusoro chigadzirwa chegoho uye kuchena.
Panguva ino, iyo cellulose ether yaive muchimiro cheupfu chena.Chigadzirwa chakapedzwa chinozoiswa kune akatevedzana emhando yekudzora bvunzo kuti ive nechokwadi chekuti chigadzirwa chinosangana nezvinodiwa uye zvakatemwa, senge viscosity, kuchena kwechigadzirwa uye hunyoro hwemukati.Iyo inobva yaiswa mukati uye inotumirwa kune yekupedzisira mushandisi.
Kupfupisa, maitiro ekugadzira cellulose ether anosanganisira kugadzirwa kwezvinhu, kurapwa kwemakemikari, kutenderera, kuchena uye etherification, inoteverwa nekuyedzwa kwemhando yekudzora.Iyo yese maitiro inoda hunyanzvi michina uye ruzivo rwekuita kwemakemikari uye inoitwa pasi pemamiriro akanyatso kudzora.Kugadzira cellulose ether inzira yakaoma uye inopedza nguva, asi yakakosha mumaindasitiri mazhinji.
Nguva yekutumira: Jun-21-2023