Polyethylene jẹ abbreviated bi PE, eyiti o jẹ iru resini thermoplastic ti a ṣe nipasẹ polymerization ti ethylene.Ni ile-iṣẹ, o tun pẹlu awọn copolymers ti ethylene ati iye kekere ti α-olefin.Polyethylene ko ni olfato, ti kii ṣe majele, kan lara bi epo-eti, ni iwọn otutu kekere ti o dara julọ (iwọn lilo iwọn otutu ti o kere ju le de ọdọ -70～-100 ℃), ni iduroṣinṣin kemikali to dara, ati pe o le duro ọpọlọpọ awọn acids ati alkalis (kii ṣe sooro si awọn ohun-ini oxidizing). ) Acid), insoluble ni awọn olomi gbogbogbo ni iwọn otutu yara, gbigbe omi kekere, idabobo itanna to dara julọ;ṣugbọn polyethylene jẹ ifarabalẹ pupọ si aapọn ayika (kemikali ati awọn ipa ẹrọ), ati pe ko ni idiwọ ooru ti ko dara.Awọn ohun-ini ti polyethylene yatọ lati eya si eya, nipataki da lori eto molikula ati iwuwo.Awọn ọna iṣelọpọ oriṣiriṣi le ṣee lo lati gba awọn ọja pẹlu awọn iwuwo oriṣiriṣi (0.91 ~ 0.96g/cm3).Polyethylene le ṣe ilọsiwaju nipasẹ awọn ọna imudọgba thermoplastic gbogbogbo (wo iṣelọpọ ṣiṣu).O ni ọpọlọpọ awọn lilo, ni akọkọ ti a lo lati ṣe awọn fiimu, awọn apoti, awọn paipu, awọn monofilaments, awọn okun waya ati awọn kebulu, awọn iwulo ojoojumọ, ati bẹbẹ lọ, ati pe o le ṣee lo bi awọn ohun elo idabobo giga-giga fun awọn TV, awọn radar, ati bẹbẹ lọ.
Awọn oriṣi ti PE:
(1) LDPE: kekere iwuwo polyethylene, ga titẹ polyethylene
(2) LLDPE: polyethylene iwuwo kekere laini
(3) MDPE: polyethylene iwuwo alabọde, resini bimodal
(4) HDPE: polyethylene iwuwo giga, polyethylene titẹ kekere
(5) UHMWPE: Polyethylene iwuwo molikula ti o ga julọ
(6) Polyethylene ti a ṣe atunṣe: CPE, polyethylene ti o ni asopọ agbelebu (PEX)
(7) Ethylene copolymer: ethylene-propylene copolymer (ṣiṣu), EVA, ethylene-butene copolymer, ethylene-olefin miiran (gẹgẹ bi awọn octene POE, cyclic olefin) copolymer, ethylene-unsaturated ester copolymer ( EAA, EMAA, EEA, EMMA, EMAH

Pipette wati ṣe ti HDPE ohun elo