Cellulose acetate ni ibintu byinshi hamwe nibikoresho byinshi. Mu nganda z’itabi, selulose acetate ikurura nicyo kintu cyambere cyibanze muyungurura itabi kubera imikorere myiza yo kuyungurura. Irakoreshwa kandi mubikorwa bya firime na plastike mugukora firime zifotora, amakadiri yerekana, hamwe nibikoresho bifata ibikoresho. Byongeye kandi, selulose acetate ikora nkibikoresho byingenzi bya membrane, harimo gushungura hamwe nibintu bya osmose bihindagurika, bitewe nuburyo bwiza bwo guhitamo no guhitamo. Hamwe na biodegradabilite hamwe no guhuza n'imihindagurikire y'ikirere, acetate ya selile ikomeje kugira uruhare runini haba mubikorwa gakondo ndetse no gukoresha ibidukikije bigezweho.
Cellulose Acetate Yiyungurura
1. Gutegura ibikoresho bito & Acetylation
Inzira itangiranainkwiselile, isukurwa kugirango ikureho lignine, hemicellulose, nibindi byanduye. Cellulose isukuye noneho irakorwa hamweacide acike, anhydride ya acetike, na aumusemburokubyara selulose acetate esters. Mugenzura urwego rwo gusimburwa, amanota atandukanye nka diacetate cyangwa triacetate arashobora kuboneka.
2. Gutegura no kuzunguruka igisubizo
Nyuma ya acetylation, reaction ivanze itabogamye, nibindi bivanwaho. Acetate ya selile irakaraba, ikuma, ikanashongaacetone cyangwa acetone - ivangwa ryamazigukora igisubizo kimwe. Kuri iki cyiciro, igisubizo kirakorwakuyungururakurandura ibice bitarakemuka hamwe na geles, byemeza ko bihamye kandi bihamye.
3. Gushinga Fibre & Kurangiza
Igisubizo kizunguruka gitunganywa hakoreshejweuburyo bwumye, aho isohorwa binyuze muri spinnerets hanyuma igakomera muri filaments nkuko umusemburo uhinduka. Filaments zegeranijwe, zirambuye, kandi zikora muburyo bukomeza cyangwa ubudodo. Nyuma yubuvuzi nko kurambura, gutobora, cyangwa kurangiza bikoreshwa mugutezimbere fibre, bigatuma bikenerwa mubisabwa muriitabimuyunguruzi, imyenda, hamwe na fibre idasanzwe.
Urupapuro runini rwo kuyungurura
SCY Urukurikirane rwurupapuro
Uru rupapuro rwungurura, hamwe na selile hamwe na cationic resin yibigize, bifite akamaro kanini mugushungura selile ya acetate ibisubizo. Itanga imbaraga zubukanishi, imbaraga zihamye, hamwe no gukuraho ibyanduye. Ibirimo bike bya polyamide epoxy resin (<1.5%) itanga ubwuzuzanye n'umutekano mugutunganya acetate ya selile, bifasha kuvanaho uduce duto, geles, hamwe n’umwanda udashonga mugihe hagumyeho imiti ihamye no kubahiriza ibiryo n’umutekano w’imiti.
Ibyiza
Gukora neza cyane- Kuraho neza ibice byiza, geles, hamwe numwanda udashonga mubisubizo bya selile acetate.
Imbaraga Zumukanishi- Imbaraga ziturika ≥200 kPa zitanga igihe kirekire kandi imikorere ihamye mukibazo.
BikurikiranyeUbwoba- Kugenzura ikirere cyinjira (25-35 L / ㎡ · s) gitanga igipimo cyizewe cyibisubizo hamwe nibisubizo bimwe byo kuyungurura.
Umwanzuro
Cellulose acetate ni ikintu cyingenzi gikoreshwa muyungurura, firime, plastike, hamwe na membrane, bihabwa agaciro kubikorwa byayo no kubora ibinyabuzima. Mugihe cyo gukora, kuyungurura neza nibyingenzi kugirango habeho ubuziranenge no guhoraho.
Urukuta runiniUrukurikirane rwa SCYmuyunguruziimpapuroGutanga ibisubizo bidasanzwe hamwehejuru yo kuyungurura neza, kuramba gukomeye, hamwe no guhagarara neza. Hamwe na resin nkeya kugirango ihuze neza, nuguhitamo kwizewe gutunganya selile ya selile mu biryo, imiti, ninganda.
