Kedu ihe bụ Plastics Warm Resistant?

A na-eji plastik eme ihe n'ofe ahịa ọ bụla n'ihi ịdị mma nke nrụpụta ha, ọnụ ala na nnukwu ụlọ. N'elu na n'elu ahụkarị ngwaahịa plastik enwere otu klas nke ọkaibe nke mgbochi okpomọkụplastiknke nwere ike ijigide ọkwa okpomọkụ nke enweghị ike. A na-eji plastik ndị a na ngwa ọkaibe ebe ngwakọta nke nguzogide ọkụ, ike igwe, na nguzogide siri ike dị mkpa. Ngosipụta a ga-akọwapụta ihe plastik na-eguzogide okpomọkụ na ihe kpatara ha ji baa uru.

Kedu ihe bụ Plastic Ọkụ na-eguzogide?

Plastic na-ekpo ọkụ na-ekpo ọkụ bụ ụdị plastik ọ bụla nke nwere ọkwa okpomọkụ na-aga n'ihu karịa 150 ° C (302 ° F) ma ọ bụ nkwụsị nke 250 ° C (482 ° F) ma ọ bụ karịa. N'ikwu ya n'ụzọ ọzọ, ngwaahịa ahụ nwere ike ịkwado usoro na ihe karịrị 150 Celsius C ma nwee ike ịtachi obi dị mkpirikpi na ma ọ bụ n'elu 250 Celsius C. Tinyere nguzogide ha na-ekpo ọkụ, plastik ndị a na-enwekarị ụlọ ọrụ dị egwu nke nwere ike na-adakọkwa na nke ọla. Plastics na-eguzogide okpomọkụ nwere ike ịdị n'ụdị thermoplastics, thermosets, ma ọ bụ fotopolymers.

Plastics nwere agbụ molekụla ogologo. Mgbe ọ na-ekpo ọkụ, a na-emebi njikọ dị n'etiti agbụ ndị a, na-emepụta ngwaahịa ahụ ka ọ mebie. Plastics nwere okpomoku agbaze agbaze na-enwekarị mgbanaka aliphatic ebe plastik na-ekpo ọkụ na-eji mgbanaka na-esi ísì ụtọ. N'ihe gbasara mgbanaka na-esi ísì ụtọ, njikọ kemịkalụ abụọ chọrọ ka emebie (tụnyere njikọ naanị nke aliphatic ring) tupu usoro ahụ emebi. Ya mere, ọ na-esiri ike ịgbaze ngwaahịa ndị a.

Na mgbakwunye na kemịkalụ dị n'okpuru, enwere ike ịkwalite nguzogide ikpo ọkụ nke plastik site na iji ihe eji eme ihe. Otu n'ime ihe mgbakwunye na-emebu maka ịkwalite nguzogide ọkwa okpomọkụ bụ eriri iko. Eriri ahụ nwekwara n'ezie uru agbakwunyere nke ịba ụba mkpokọta na ume ihe onwunwe.

Enwere usoro dị iche iche nke ịchọpụta nguzogide okpomọkụ nke rọba. A na-edepụta ihe kachasị mkpa ebe a:

• Ọkwa okpomoku ngbanwe ọkụ (HDT) - Nke a bụ ọnọdụ okpomọkụ nke rọba ga-ada ada n'okpuru nza eburu ụzọ kọwaa. Usoro a anaghị agụta maka nsonaazụ ogologo oge ga-adị na ngwaahịa ahụ ma ọ bụrụ na ejidere okpomọkụ ahụ ruo ogologo oge.
• Igwe na-agbanwe okpomọkụ (Tg) - N'ihe gbasara plastik amorphous, Tg na-akọwa okpomọkụ nke ihe na-agbanwe rubbery ma ọ bụ viscous.
• Okpomọkụ na-aga n'ihu na-aga n'ihu (CUT) - Na-akọwapụta okpomoku kacha mma nke enwere ike iji plastik mee ihe mgbe niile na-enweghị mbibi dị ukwuu na ụlọ ọrụ ya n'ime oge ndụ nke akụkụ ahụ.

Kedu ihe kpatara eji eji Plastics Heat Resistant Plastics?

A na-eji plastik eme ihe n'ọtụtụ ebe. Otú ọ dị, gịnị mere mmadụ ga-eji jiri plastik mee ihe na-ekpo ọkụ na-ekpo ọkụ mgbe ígwè nwere ike ime otu ihe ahụ karịa ụdị okpomọkụ dị iche iche? Ebe a bụ ụfọdụ ihe kpatara ya:

1. Obere arọ - Plastics dị mfe karịa ọla. Ya mere, ha mara oke mma maka ngwa n'ime ụgbọ ala na ahịa ikuku na-adabere na ihe ndị dị fechaa iji welie arụmọrụ izugbe.
2. Nguzogide nchara - Ụfọdụ plastik nwere ezigbo nchara nchara karịa nchara mgbe ekpughere ya na kemịkalụ dịgasị iche iche. Nke a nwere ike ịdị mkpa maka ngwa ndị na-agụnye ma okpomọkụ na ikuku siri ike dị ka ndị dị na ụlọ ọrụ kemịkal.
3. Nrụpụta Mgbanwe - Enwere ike ịme ihe ndị nwere plastik na-eji teknụzụ mmepụta dị elu dị ka ịkpụzi injection. Nke a na-ebute akụkụ ndị na-adịchaghị ọnụ n'otu nkeji karịa ndị ogbo igwe CNC-egweri ha. A pụkwara ime akụkụ plastik site na iji mbipụta 3D nke na-eme ka nhazi dị mgbagwoju anya na ime mgbanwe dị mma karịa ka enwere ike nweta site na iji CNC machining.
4. Insulator - Plastics nwere ike na-arụ ọrụ ma dị ka thermal na eletriki insulators. Nke a na-eme ka ha dị mma ebe ọkụ eletrik nwere ike imebi ngwaọrụ eletrọnịkị nwere mmetụta dị nro ma ọ bụ ebe okpomọkụ nwere ike imetụta usoro ihe ndị ahụ n'ụzọ na-adịghị mma.

Ụdị plastik na-eguzogide okpomọkụ dị elu

Enwere isi otu abụọ nke thermoplastics - ya bụ plastik amorphous na semirystalline. Enwere ike ịchọta plastik na-eguzogide okpomọkụ na nke ọ bụla n'ime otu ndị a dị ka egosiri na Nọmba 1 edepụtara n'okpuru. Isi ihe dị iche n'etiti 2 ndị a bụ omume agbaze ha. Ngwaahịa amorphous enweghị ebe mgbaze nke ọma mana ọ na-eji nwayọ nwayọ ka ọkwa okpomọkụ na-ebili. Ihe ọkara kristal, ma atụnyere, nwere ebe mgbaze dị oke nkọ.

Edepụtara n'okpuru bụ ụfọdụ ngwaahịa a na-enye site naDTG. Kpọọ onye nnọchi anya DTG ma ọ bụrụ na ịchọrọ ngwaahịa nkọwa nke edeghị ebe a.

Polyethermide (PEI).

A na-aghọtakarị ihe a site na aha ahia ya nke Ultem ma bụrụ plastik amorphous nwere ụlọ ọkụ na arụ ọrụ pụrụ iche. Ọ na-eguzogidekwa ire ọkụ ọbụna na-enweghị ihe ọ bụla. Agbanyeghị, ọ dị mkpa ka elele nguzogide ire ọkụ na mpempe data ngwaahịa ahụ. DTG na-enye àgwà abụọ nke plastik Ultem maka mbipụta 3D.

Polyamide (PA).

Polyamide, nke aha ahia ahaziri, Nylon, nwere nnukwu ụlọ na-ekpo ọkụ na-ekpo ọkụ, ọkachasị mgbe ejikọtara ya na ngwa na ihe ndozi. Na mgbakwunye na nke a, naịlọn na-eguzogide oke abrasion. DTG na-enye ụdị nylon na-eguzogide okpomọkụ nwere ọtụtụ ihe ndochi dị iche iche dị ka egosiri n'okpuru.

Photopolymers.

Photopolymers bụ rọba dị iche iche nke na-abịa na polymerized naanị n'okpuru mmetụta nke akụrụngwa ike dị n'èzí dị ka ọkụ UV ma ọ bụ otu usoro anya. Enwere ike iji ihe ndị a wepụta akụkụ ebipụta nke ọma nwere geometry gbagwojuru anya nke na-agaghị ekwe omume site na ụdị nrụpụta ndị ọzọ dị iche iche. N'ime ụdị nke fotopolymers, DTG na-enye plastik 2 na-eguzogide okpomọkụ.