Kedu ihe bụ ngwaahịa plastik?
A na-ekewa ngwaahịa plastik n'ime ụdị abụọ nke thermoplastic na thermosetting, ihe na-esonụ bụ mmeghe zuru ezu, enwere m olileanya inyere aka.
1. Thermoplastic
Thermoplastics, nke a makwaara dị ka resin thermoplastic, bụ akụkụ bụ isi nke plastik.A na-eji ihe ndị na-emepụta ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe ndị nwere ike ịgbanye ibe ha site na-agbaze na okpomọkụ ma nwee ike ịgwọ ọzọ.Ihe ndị a na-enwekarị ịdị arọ molekụla dị elu ma nwee nhazi usoro agbụ molekụla ugboro ugboro.Enwere ike ịhazi thermoplastics site na ịkpụzi injection, extrusion, ịkpụzi ịkpụzi, calendering na usoro ndị ọzọ iji mee akụkụ na ngwaahịa nke ụdị na nha dị iche iche.
(1) Polyethylene (PE): PE bụ otu n'ime plastik ndị a na-ahụkarị, nke a na-ejikarị na nkwakọ ngwaahịa, ọkpọkọ, ihe mkpuchi waya na ebumnuche ndị ọzọ.Dị ka usoro ya na njupụta ya si dị, PE nwere ike kewaa n'ime nnukwu njupụta polyethylene (HDPE), obere njupụta polyethylene (LDPE) na linear low density polyethylene (LLDPE).
Polypropylene (PP): PP bụkwa plastik nkịtị, nke a na-ejikarị na arịa, karama, na ngwaọrụ ahụike.PP bụ plastik nke ọkara kristal, yabụ na ọ siri ike na nghọta karịa PE.
(3) Polyvinyl chloride (PVC): PVC bụ otu n'ime mmepụta plastik kachasị elu n'ụwa, nke a na-ejikarị eme ihe na ihe owuwu, ihe mkpuchi waya, nkwakọ ngwaahịa na ngwaọrụ ahụike na ubi ndị ọzọ.PVC nwere ike ịcha agba ma na-eguzogide ọtụtụ kemịkalụ.
(4) Polystyrene (PS): A na-ejikarị PS eme ihe dị arọ, ihe nkwakọ ngwaahịa transperent, dị ka igbe nri na igbe nchekwa.A na-ejikwa PS na-emepụta ụfụfụ, dị ka ụfụfụ EPS.
Acrylonitrile-butadiene-styrene copolymer (ABS): ABS bụ plastik siri ike, na-egbochi mmetụta nke a na-ejikarị eme aka, ụlọ eletrik na akụkụ akpaaka.
(6) Ndị ọzọ: Na mgbakwunye, e nwere ọtụtụ ụdị thermoplastics ndị ọzọ, dị ka polyamide (PA), polycarbonate (PC), polyformaldehyde (POM), polytetrafluoroethylene (PTFE) na ndị ọzọ.
2, plastic thermosetting
Plastics na-ekpo ọkụ bụ klas pụrụ iche nke plastik, dị iche na thermoplastics.Ihe ndị a anaghị eme ka ọ dị nro ma na-asọba mgbe a na-ekpo ọkụ, ma a na-agwọ ya site na okpomọkụ.Plastics na-ekpo ọkụ na-enwekarị ike na ike siri ike ma dabara adaba maka ngwa ndị chọrọ ịdịte aka na ike ka ukwuu.
Epoxy resin (EP): Epoxy resin bụ rọba siri ike na-ekpo ọkụ na-ekpo ọkụ nke a na-ejikarị eme ihe na-ewu, ngwá electronic na ụlọ ọrụ ụgbọ ala.Epoxy resins nwere ike iji ihe ndị ọzọ meghachi omume na kemịkalụ iji mepụta nrapado na mkpuchi dị ike.
(2) Polyimide (PI): Polyimide bụ plastik na-ekpo ọkụ nke ukwuu nke nwere ike idowe ihe onwunwe ya na okpomọkụ dị elu.A na-eji ya n'ọtụtụ ebe na mbara igwe, ngwá electronic na ụlọ ọrụ ụgbọ ala na-emepụta ihe ndị na-eguzogide okpomọkụ dị elu na mkpuchi.
(3) Ndị ọzọ: Tụkwasị na nke ahụ, e nwere ọtụtụ ụdị plastik ndị na-ekpo ọkụ ọkụ, dị ka phenolic resin, furan resin, polyester unsaturated na ndị ọzọ.
Oge nzipu: Dec-07-2023