Kugadzirwa KweHydroxyethyl Cellulose

Hydroxyethyl cellulose (HEC) inowanzo gadzirwa kuburikidza neinodzorwa kemikari yekuita pakati peselulosi uye ethylene oxide, inoteverwa nehydroxyethylation. Iyo nzira inosanganisira akati wandei, kusanganisira:

1. Kugadzirira kweCellulose: Maitiro ekugadzira anotanga nekuparadzaniswa kweselulosi kubva kune inogona kudzokororwa sosi sehuni pulp, machira ekotoni, kana mamwe mafiber ezvirimwa. Iyo cellulose inowanzocheneswa uye kugadziriswa kuti ibvise tsvina uye lignin, zvichikonzera yakanyatsonatswa cellulose zvinhu.
2. Ethoxylation: Munhanho iyi, iyo yakacheneswa cellulose zvinhu inobatwa ne ethylene oxide pamberi pe alkaline catalysts pasi pemamiriro akadzora. Ethylene oxide mamorekuru anowedzera kumapoka ehydroxyl (-OH) echeni ye cellulose polymer, zvichikonzera kuunzwa kwemapoka ethoxy (-OCH2CH2-) pamusana we cellulose.
3. Hydroxyethylation: Kutevera ethoxylation, iyo ethoxylated cellulose inowedzera kubatwa ne ethylene oxide uye alkali pasi pemamiriro ekudzora kuunza hydroxyethyl (-OCH2CH2OH) mapoka pane cellulose chain. Iyi hydroxyethylation reaction inogadzirisa zvimiro zve cellulose, ichipa kunyungudika kwemvura uye hydrophilicity kune polymer.
4. Kucheneswa uye Kuomesa: Iyo hydroxyethylated cellulose inozocheneswa kuti ibvise zvakasara zvinogadzirisa, zvinokonzeresa, uye ne-zvigadzirwa kubva mumusanganiswa wekuita. Iyo HEC yakacheneswa inowanzoshambidzwa, kusefa, uye kuomeswa kuti iwane hupfu hwakatsetseka kana magranules akakodzera kune akasiyana maapplication.
5. Grading uye Packaging: Chekupedzisira, iyo HEC chigadzirwa chinoiswa giredhi zvichienderana nehunhu hwayo senge viscosity, particle size, uye kuchena. Inobva yaiswa mumabhegi, zvigubhu, kana zvimwe zvigubhu kuti zvigovane nekuchengetwa.

Maitiro ekugadzira anogona kusiyanisa zvishoma zvichienderana negiredhi chaiyo uye yemhando zvinodiwa zveHEC chigadzirwa, pamwe nemaitiro ekugadzira emakambani ega. Matanho ekudzora emhando anowanzo shandiswa mukati memaitiro ekugadzira kuti ave nechokwadi chekuenderana, kuchena, uye kuita kweiyo yekupedzisira HEC chigadzirwa.

HEC inoshandiswa mumhando dzakasiyana-siyana dzemaindasitiri, kusanganisira kuvaka, mishonga, kutarisirwa kwevanhu, uye zvokudya, nekuda kwekukora, kugadzikana, uye kuchengetedza mvura.