Polyethylene terephthalate Usoro kemịkalụ bụ -OCH2-CH2OCOC6H4CO- Aha Bekee: polyethylene terephthalate, nke a na-akpọ PET, bụ polima dị elu, nke sitere na mmeghachi omume mmiri mmiri nke ethylene terephthalate. A na-enweta Ethylene terephthalate site na mmeghachi omume esterification nke terephthalic acid na ethylene glycol. PET bụ polima ọcha ma ọ bụ odo odo dị nro, nke nwere kristal dị nkọ nke ukwuu, nke nwere elu dị nro ma na-egbuke egbuke. O nwere ihe onwunwe anụ ahụ na nke mekaniki dị mma n'ọtụtụ okpomọkụ. Okpomọkụ ojiji ogologo oge nwere ike iru 120°C. Ihe mkpuchi eletriki dị mma. Ọbụna n'oge okpomọkụ dị elu na ugboro ugboro dị elu, ihe onwunwe eletriki ya ka dị mma, mana iguzogide corona adịghị mma. Mgbochi na-agagharị agagharị, iguzogide ike ọgwụgwụ, iguzogide esemokwu, na nkwụsi ike nha niile dị mma nke ukwuu.
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1, o nwere ezigbo ihe eji arụ ọrụ, ike mmetụta ya dị okpukpu atọ ruo ise karịa nke ihe nkiri ndị ọzọ, ike ndọda ahụ dịkwa mma.
2, na-eguzogide mmanụ, abụba, acid a gwakọtara agwakọta, alkali a gwakọtara agwakọta, na ọtụtụ ihe mgbaze.
3, o nwere ezigbo iguzogide okpomọkụ dị elu na nke dị ala. Enwere ike iji ya ruo ogologo oge n'ogo okpomọkụ nke 120℃, ọ nwekwara ike iguzogide okpomọkụ dị elu nke 150℃ na obere okpomọkụ nke -70℃ na ojiji obere oge, ihe ndị dị na igwe nke okpomọkụ dị elu na nke dị ala anaghị enwe mmetụta dị ukwuu.
4, ike ikuku gas na mmiri adịghị oke, ya bụ, o nwere ezigbo ike iguzogide gas, mmiri, mmanụ na isi ọjọọ.
5, nghọta dị elu, nwere ike igbochi ụzarị ultraviolet, ezigbo mma na-egbuke egbuke.
6, anaghị egbu egbu, enweghị ụtọ, ịdị ọcha na nchekwa dị mma, enwere ike iji ya ozugbo maka nkwakọ ngwaahịa nri.
PET bụ polima ọcha ma ọ bụ odo dị nro nke nwere kristal dị nro nke nwere elu dị nro ma na-egbuke egbuke. Ọ na-eguzogide ike ọgwụgwụ, ike ọgwụgwụ, iguzogide esemokwu na nkwụsi ike nha, obere abrasion na ike dị elu, yana ike kachasị ukwuu n'etiti ihe ndị dị na thermoplastic: mkpuchi eletriki dị mma, mmetụta okpomọkụ dị ala, mana ọ naghị eguzogide corona. Okpomọkụ, iguzogide ihu igwe, nkwụsi ike kemịkal dị mma, obere mmịpụta mmiri, iguzogide asịd na ihe mgbaze organic, mana anaghị amịnye ya na mmiri ọkụ na alkali. PET resin nwere okpomọkụ mgbanwe iko dị elu, ọsọ kristal dị nwayọ, okirikiri ịkpụzi ogologo, okirikiri ịkpụzi ogologo, nnukwu mkpụchi ịkpụzi, nkwụsi ike nha adịghị mma, mgbawa nke ịkpụzi kristal, na obere iguzogide okpomọkụ. Site na mmezi nke ihe nnọchi anya nucleating, ihe nnọchi kristal na nkwado eriri iko, PET nwere njirimara ndị a na mgbakwunye na njirimara nke PBT:
1, okpomọkụ mgbanwe okpomọkụ na okpomọkụ ojiji ogologo oge bụ nke kachasị elu n'etiti ihe ndị e ji thermoplastic mee n'ozuzu ya.
2, n'ihi oke okpomọkụ ya, a na-etinye PET siri ike n'ime bat solder na 250°C ruo sekọnd iri, ọ fọrọ nke nta ka ọ ghara ịgbanwe agba. Ọ dabara nke ọma maka ịkwadebe akụkụ eletrọniki na eletriki e tinyere na ya.
3, ike ịgbagọ bụ 200Mpa, modulus na-agbanwe agbanwe bụ 4000Mpa, ike ọgwụgwụ na nguzogide ike ọgwụgwụ dịkwa mma nke ukwuu, ike elu dị elu, ihe ndị dị na igwe yiri plastik thermosetting.
4, ebe ọ bụ na ethylene glycol eji emepụta PET bụ ihe fọrọ nke nta ka ọ bụrụ ọkara ọnụahịa nke butylene glycol eji eme ihe na mmepụta ahụ, PET resin na PET e mere ka ọ sie ike bụ ọnụ ahịa kacha ala n'etiti plastik injinia ma nwee arụmọrụ dị elu.