Kedu ihe dị mma, PET ma ọ bụ PP?

E jiri ya tụnyere ihe PET na PP, PP ga-akawanye mma na arụmọrụ.
1. Ihe dị iche na nkọwa
PET(Polyethylene terephthalate) aha sayensị bụ polyethylene terephthalate, nke a na-akpọkarị polyester resin, bụ ihe resin.
PP(polypropylene) aha sayensị bụ polypropylene, nke bụ polymer kpụrụ site na mgbakwunye polymerization nke propylene, na bụ thermoplastic synthetic resin.
2.Site na njirimara nke ọdịiche
(1) PET
①PET bụ mmiri ara ehi na-acha ọcha ma ọ bụ na-acha odo odo nke ukwuu kristal polymer nke nwere elu dị larịị ma na-egbuke egbuke.
②PET ihe nwere ezigbo ike ọgwụgwụ, nguzogide abrasion na nkwụsi ike akụkụ, obere iyi na ike siri ike, ike na-ehulata nke 200MPa, na modulus nke 4000MPa.
③ The PET ihe nwere magburu onwe elu na ala okpomọkụ na-eguzogide arụmọrụ, nke a pụrụ iji ruo ogologo oge na okpomọkụ nso nke 120 Celsius C, na ike idi elu okpomọkụ nke 150 Celsius C maka obere oge ojiji na ala okpomọkụ nke -70 Celsius. C.
④ Ethylene glycol eji na-emepụta PET nwere ọnụ ala dị ala na arụmọrụ dị elu.
⑤ Ihe PET anaghị egbu egbu, nwere nkwụsi ike dị mma megide kemịkalụ, ma na-eguzogide acid na-adịghị ike na ihe mgbaze organic, mana ọ naghị eguzogide imikpu n'ime mmiri ọkụ na alkali.
(2) PP
①PP bụ ihe na-acha ọcha waxy nwere ọdịdị doro anya na ìhè. Ọ bụ ụdị resin kacha dị mfe nke a na-ejikarị.
②PP ihe nwere magburu onwe n'ibu Njirimara na ezigbo okpomọkụ na-eguzogide, na-aga n'ihu ojiji okpomọkụ nwere ike iru 110-120 °C.
③PP ihe nwere ezigbo nkwụsi ike kemịkalụ yana ọ naghị emekọrịta ihe na ọtụtụ kemịkalụ ma ewezuga oxidants siri ike.
④ PP ihe nwere okpomọkụ na-agbaze dị elu na ike nkwụsị, na nghọta nke ihe nkiri ahụ dị elu.
⑤PP ihe nwere ezigbo mkpuchi eletriki, ma ọ dị mfe ịka nká ma nwee mmetụta na-adịghị mma na obere okpomọkụ.
3. Ọdịiche eji
A na-eji PET eme ihe n'ọtụtụ ebe, dị ka ịtụgharị n'ime eriri polyester, ya bụ, polyester; dị ka plastik, enwere ike ịfụ ya n'ime karama dị iche iche; dị ka akụkụ eletriki, bearings, gears, wdg.
A na-eji ihe PP eme ihe n'ọtụtụ ebe na mmepụta nke injectionngwaahịa ịkpụzi, ihe nkiri, ọkpọkọ, efere, eriri, mkpuchi, wdg, yana ngwa ụlọ, uzuoku, kemịkalụ, ihe owuwu, ụlọ ọrụ ọkụ na ubi ndị ọzọ.