Selulose ya ethyl(Ethyl cellulose ether), izwi kandi nka cellulose ether, izwi nka EC.
Imiterere ya molekile n'imiterere yayo: [C6H7O2 (OC2H5)3] n.
1. Gukoresha
Iki gicuruzwa gifite inshingano zo gufatanya, kuzuza, gukora firime, nibindi. Kikoreshwa mu gukora pulasitiki zikozwe muri resin, gusiga irangi, gusimbura rabha, wino, ibikoresho bikingira ubushyuhe, ndetse gikoreshwa nk'ubukorikori, ibikoresho byo kurangiza imyenda, nibindi, kandi gishobora gukoreshwa nk'inyamaswa mu buhinzi n'ubworozi. Inyongeramusaruro ku biryo, ikoreshwa nk'ubukorikori mu bikoresho by'ikoranabuhanga no mu bikoresho bya gisirikare.
2. Ibisabwa mu rwego rwa tekiniki
Dukurikije uburyo butandukanye bwo gukoresha, EC ikoreshwa mu bucuruzi ishobora kugabanywamo ibyiciro bibiri: urwego rw'inganda n'urwego rw'imiti, kandi muri rusange ishongeshwa mu bintu bishongesha imiti. Ku rwego rw'imiti EC, amahame yayo y'ubuziranenge agomba kuba yujuje amahame ya Chinese Pharmacopoeia 2000 edition (cyangwa USP XXIV/NF19 edition n'amahame ya Japanese Pharmacopoeia JP edition).
3. Imiterere y'umubiri n'imiti
1. Ishusho: EC ni ifu y'amazi y'umweru cyangwa imvi yoroshye, nta mpumuro.
2. Imiterere: EC icuruzwa muri rusange ntishongera mu mazi, ariko ishongera mu bintu bitandukanye by’umwimerere. Ifite ubushyuhe bwiza, ivu rike cyane iyo ritwitswe, kandi ntirikunze gufata cyangwa ngo rigire ikibazo cyo kubyimba. Ishobora gukora firime ikomeye. Iracyashobora gukomeza koroha. Iki gicuruzwa ntigihumanya, gifite ubushobozi bukomeye bwo kurwanya ibinyabuzima, kandi ntigikoresha imikorere mibi ya metabolic, ariko gishobora kwangirika bitewe n’izuba cyangwa urumuri rwa ultraviolet. Kuri EC yihariye, hari n’ubwoko bushongera mu mazi meza. Kuri EC ifite urugero rwo gusimbuza ruri hejuru ya 1.5, ni thermoplastic, ifite aho yorohereza 135 ~ 155 °C, aho ishonga iri hejuru ya 165 ~ 185 °C, uburemere bw’ibintu byihariye bwa 0.3 ~ 0.4 g / cm3, n’ubucucike bwa 1.07 ~ 1.18 g / cm3. Igipimo cyo gushonga kwa EC kigira ingaruka ku gushonga, kwinjiza amazi, imiterere ya mekanike n’imiterere y’ubushyuhe. Uko urugero rw'ubushyuhe bw'amazi rugenda rwiyongera, ubushyuhe bw'amazi mu byuma biyungurura umwuka bugenda bugabanuka, mu gihe ubushyuhe bw'amazi mu byuma biyungurura umwuka bwiyongera. Bushobora gushonga mu byuma byinshi biyungurura umwuka. Ubushyuhe bukunze gukoreshwa ni toluene/ethanol nk'umunyungugu uvanze wa 4/1 (uburemere). Ubushyuhe bw'ubushyuhe bw'amazi buriyongera, aho bugera n'ubushyuhe bw'amazi biragabanuka, kandi ubushyuhe bw'ikoreshwa ni -60°C ~ 85°C. Ingufu zo gukurura 13.7~ 54.9Mpa, ubushyuhe bw'amazi 10*e12~ 10*e14 ω.cm
Selulosi ya ethyl (DS: 2.3-2.6) ni eteri ya selulosi idafite ionic idashonga mu mazi ariko ishonga mu bintu bishongesha mu bimera.
1. Ntabwo byoroshye gutwika.
2. Ubushyuhe buhamye kandi bufite thermos-plasticity nziza cyane.
3. Ntibihindura ibara ry'izuba.
4.Ubworoherane bwiza.
5. Imiterere myiza ya dielectric.
6. Ifite ubudahangarwa bwiza bwa alkali kandi irwanya aside nke.
7. Imikorere myiza yo kurwanya gusaza.
8. Ubudahangarwa bwiza bw'umunyu, budahangarwa n'ubukonje kandi budahangarwa n'ubushuhe.
9.Irakomera ku miti kandi ntizangirika mu gihe kibitswe igihe kirekire.
10. Ishobora kuba ihuye n'amaresini menshi kandi ihuye neza n'amapulasitiki yose.
11. Biroroshye guhindura ibara mu gihe hari ikirere gifite alkaline nyinshi n'ubushyuhe bwinshi.
4. Uburyo bwo gusenya
Imisemburo ivanze ikoreshwa cyane muri ethyl cellulose (DS: 2.3 ~ 2.6) ni hydrocarbons na alcohols bihumura neza. Imisemburo ishobora kuba benzene, toluene, ethylbenzene, xylene, nibindi, hamwe ningano ya 60-80%; alcohols ishobora kuba methanol, ethanol, nibindi, hamwe ningano ya 20-40%. Shyira buhoro buhoro EC mu gikoresho kirimo iyo misemburo iri mu kuvanga kugeza itose neza kandi ishonge.
Nimero ya CAS: 9004-57-3
5. Gushyira mu bikorwa
Kubera ko amazi yayo adashonga,selulose ya etiliikoreshwa cyane cyane nk'igikoresho cyo gufunga amatafari n'ibikoresho byo gusiga amafoto, nibindi, kandi ishobora no gukoreshwa nk'igikoresho cyo gukumira amatafari mu gutegura ubwoko butandukanye bw'amatafari arekura amatarifa buri gihe;
Ikoreshwa nk'ibikoresho bivanze mu gutegura imiti ipfutse irekura neza kandi irekura neza;
Ikoreshwa nk'igikoresho cy'inyongera cyo gufunga mu gutegura utudomo duto duto dusohora vuba, kugira ngo ingaruka z'umuti zishobore kurekurwa buri gihe kandi zikumire imiti imwe n'imwe ishongeshwa mu mazi gukora imburagihe;
Ishobora kandi gukoreshwa nk'ikintu gitandukanya amazi, gitera imbaraga, kandi kibungabunga amazi mu buryo butandukanye bwo gupima imiti kugira ngo hirindwe ubushuhe n'igabanuka ry'imiti no kunoza uburyo ibinini bibikwamo neza.
Igihe cyo kohereza: 28 Mata 2024