Polyethylene terephthalate Usoro kemịkal bụ -OCH2-CH2OCOC6H4CO- aha Bekee: polyethylene terephthalate, nke a na-akpọ PET, bụ polymer dị elu, nke sitere na mmeghachi omume mmiri mmiri na-ekpo ọkụ nke ethylene terephthalate.A na-enweta Ethylene terephthalate site na mmeghachi omume esterification nke terephthalic acid na ethylene glycol.PET bụ mmiri ara ehi na-acha ọcha ma ọ bụ na-acha odo odo, nke nwere nnukwu kristal nke nwere elu dị larịị ma na-egbuke egbuke.Ọ nwere ọmarịcha anụ ahụ na n'ibu na oke okpomọkụ.Okpomọkụ eji eme ogologo oge nwere ike iru 120 Celsius.Ihe mkpuchi eletrik dị mma.Ọbụlagodi na oke okpomọkụ na ugboro dị elu, akụrụngwa eletrik ya ka dị mma, mana nguzogide corona adịghị mma.Nguzogide na-akpụ akpụ, nkwụsi ike ike ọgwụgwụ, nkwụsi ike nke esemokwu, na nkwụsi ike nke akụkụ niile dị ezigbo mma.
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1, ọ nwere ezigbo n'ibu Njirimara, mmetụta ike bụ 3 ~ 5 ugboro nke ndị ọzọ na fim, na mpịachi eguzogide dị mma.
2, na-eguzogide mmanụ, abụba, dilute acid, itughari alkali, na ọtụtụ ihe mgbaze.
3, ọ nwere magburu onwe elu na ala okpomọkụ iguzogide.Ọ nwere ike na-eji ruo ogologo oge na okpomọkụ nso nke 120 ℃, na ike idi elu okpomọkụ nke 150 ℃ na ala okpomọkụ nke -70 ℃ na obere oge ojiji, na n'ibu Njirimara nke elu na ala okpomọkụ nwere obere mmetụta.
4, gas na mmiri vapor permeability dị ala, ya bụ, ọ nwere ezigbo gas, mmiri, mmanụ na isi na-eguzogide.
5, nghọta dị elu, nwere ike igbochi ụzarị ultraviolet, gloss dị mma.
6, anaghị egbu egbu, enweghị ụtọ, ịdị ọcha na nchekwa dị mma, enwere ike iji ya ozugbo maka nkwakọ ngwaahịa nri.
PET bụ mmiri ara ehi na-acha ọcha ma ọ bụ na-acha odo odo nke ukwuu polymer kristal nke nwere elu dị larịị ma na-egbuke egbuke.Ezigbo nguzogide na-akpụ akpụ, nkwụsi ike ike ọgwụgwụ, nkwụsi ike na nkwụsi ike akụkụ, obere abrasion na ike siri ike, yana ihe siri ike n'etiti ihe ndị dị na thermoplastic: mkpuchi ọkụ eletrik dị mma, mmetụta okpomọkụ dị ala, mana nkwụsị nke corona adịghị mma.Okpomọkụ, nkwụsi ike ihu igwe, nkwụsi ike nke kemịkalụ dị mma, mmiri na-erughị ala, iguzogide acid na-adịghị ike na ihe mgbaze organic, ma ọ bụghị n'ime mmiri ọkụ na alkali.PET resin nwere okpomọkụ mgbanwe iko dị elu, ọsọ kristal na-adịghị ngwa, ogologo okirikiri ịkpụzi ogologo, ogologo ogologo okirikiri ịkpụzi, nnukwu ịkpụzi shrinkage, nkwụsi ike nke akụkụ na-adịghị mma, nhịhịa nke ịkpụzi kristal, yana nguzogide dị ala.Site na nkwalite nke onye na-emepụta ihe, onye na-ahụ maka kristal na nkwado fiber glass, PET nwere njirimara ndị a na mgbakwunye na njirimara PBT:
1, okpomọkụ agbagọ okpomọkụ na ogologo oge ojiji okpomọkụ bụ ndị kasị elu n'etiti thermoplastic izugbe-nzube ihe.
2, n'ihi na ọ na-eguzogide okpomọkụ dị elu, a na-emikpu PET n'ime mmiri ịsa ahụ na 250 ° C maka 10 sekọnd, ọ fọrọ nke nta ka ọ ghara ịgbanwe agba.Ọ dị mma karịsịa maka nkwadebe nke akụkụ eletrọnịkị na eletrik na-ere ere.
3, ike na-ehulata bụ 200Mpa, modulus na-agbanwe bụ 4000Mpa, ihe na-akpụ akpụ na ike ọgwụgwụ dịkwa mma nke ukwuu, isi ike elu dị elu, na akụrụngwa akụrụngwa yiri plastik thermosetting.
4, ebe ọ bụ na ethylene glycol eji emepụta PET fọrọ nke nta ka ọ bụrụ ọkara ọnụ ahịa butylene glycol eji eme ihe, PET resin na agbakwunyere PET bụ ọnụ ahịa kacha ala n'etiti plastik injinia ma nwee nnukwu ụgwọ ọrụ.