Polyethylene terephthalate Ifumbire mvaruganda ni -OCH2-CH2OCOC6H4CO- Izina ryicyongereza: polyethylene terephthalate, mu magambo ahinnye yiswe PET, ni polymer ndende, ikomoka kumyuka ya dehidrasi ya reaction ya Ethylene terephthalate.Ethylene terephthalate ibonwa na esterification reaction ya acide terephthalic na Ethylene glycol.PET ni amata yera cyangwa yijimye yumuhondo, polymer ya kirisiti cyane ifite ubuso bworoshye kandi bubengerana.Ifite ibintu byiza byumubiri nubukanishi muburyo bugari.Ubushyuhe burigihe bwo gukoresha burashobora kugera kuri 120 ° C.Gukwirakwiza amashanyarazi ni byiza.Ndetse no ku bushyuhe bwinshi na frequency nyinshi, ibikoresho byamashanyarazi biracyari byiza, ariko kurwanya corona ni bibi.Kurwanya creep, kurwanya umunaniro, kurwanya ubukana, hamwe no guhagarara neza ni byiza cyane.
akarusho
1, ifite imiterere yubukanishi, imbaraga zingaruka zikubye inshuro 3 ~ 5 zizindi firime, kandi kurwanya gukubitwa nibyiza.
2, irwanya amavuta, ibinure, acide aside, ibinyobwa bya alkali, hamwe na solde nyinshi.
3, ifite ubushyuhe buhanitse kandi buke.Irashobora gukoreshwa igihe kirekire mubushuhe bwa dogere 120 ℃, kandi irashobora kwihanganira ubushyuhe bwo hejuru bwa 150 ℃ hamwe nubushuhe buke bwa -70 ℃ mugukoresha mugihe gito, kandi imiterere yubukanishi bwubushuhe bwo hejuru kandi buke ntigira ingaruka nke.
4, imyuka ya gaze n'amazi ni bike, ni ukuvuga ko ifite gaze nziza, amazi, amavuta hamwe no kurwanya umunuko.
5, gukorera mu mucyo mwinshi, birashobora guhagarika imirasire ya ultraviolet, gloss nziza.
6, idafite uburozi, uburyohe, isuku nziza numutekano, birashobora gukoreshwa muburyo bwo gupakira ibiryo.
PET ni amata yera cyangwa yumuhondo yumuhondo cyane kristaline polymer ifite ubuso bworoshye kandi bubengerana.Kurwanya ibimera neza, kurwanya umunaniro, kurwanya ubukana no guhagarara neza, kugabanuka gukomeye hamwe no gukomera cyane, hamwe nuburemere bukomeye mubikoresho bya thermoplastique: amashanyarazi meza, ubushyuhe buke, ariko kurwanya corona nabi.Ubushyuhe, kurwanya ikirere, guhangana n’imiti myiza, gufata amazi make, kurwanya acide nkeya hamwe n’umuti ukomoka ku binyabuzima, ariko ntibishizwe mu mazi ashyushye na alkali.PET resin ifite ubushyuhe bwo hejuru bwikirahure, umuvuduko muke wa kristu, umuvuduko muremure, uruziga rurerure, kugabanuka kwinshi, kugabanuka gukabije, kugabanuka kwinshi, hamwe nubushyuhe buke.Binyuze mu kunoza imikorere ya nucleating agent, kristallisation agent hamwe no gushimangira fibre fibre, PET ifite ibimenyetso bikurikira byiyongera kumiterere ya PBT:
1, ubushyuhe bwo kugoreka ubushyuhe hamwe nigihe kirekire cyo gukoresha ubushyuhe nicyo hejuru cyane mubikoresho rusange bya termoplastique.
2, kubera ubushyuhe bwayo bwinshi, PET ishimangirwa yibizwa mu bwogero bwagurishijwe kuri 250 ° C kumasegonda 10, kandi hafi ntabwo ihindura ibara.Birakwiriye cyane cyane gutegura ibikoresho bya elegitoroniki bigurishwa n'amashanyarazi.
3, imbaraga zunama ni 200Mpa, modulus ya elastique ni 4000Mpa, kurwanya creep numunaniro nabyo nibyiza cyane, ubukana bwubuso buri hejuru, kandi nibikoresho bya mashini bisa na plastiki ya termosetting.
4, kubera ko Ethylene glycol ikoreshwa mugukora PET ni hafi kimwe cya kabiri cyigiciro cya butylene glycol ikoreshwa mu musaruro, PET resin hamwe na PET ishimangirwa nigiciro gito muri plastiki yubuhanga kandi gifite imikorere ihenze.