Thermoplastic vs Thermoset

Thermoplastic vs Thermoset

Thermoplastic na-ezo aka n'ihe onwunwe nke ihe nwere ike ịgbasa ma gbanwee mgbe ọ na-ekpo ọkụ, ma nwee ike ịnọgide na-enwe ụdị ụfọdụ mgbe ọ jụrụ. Ọtụtụ polymers linear na-egosipụta thermoplasticity ma na-edozi ya ngwa ngwa site na extrusion, injection ma ọ bụ ịkpụzi. Thermosetting na-ezo aka n'ihe onwunwe nke enweghị ike ime ka ọ dị nro na ịkpụzi repeatedly mgbe ọkụ, na ọ na-apụghị igbari na ihe mgbaze. Nnukwu polymers nwere ihe onwunwe a.

Thermosetting bụ mgbanwe kemịkalụ. Mgbe a kpochara ya ọkụ, usoro ahụ agbanweela wee ghọọ ihe ọzọ. Dịka ọmụmaatụ, ịnweghị ike iweghachi akwa ahụ ka esichara ya. Thermoplasticity bụ mgbanwe anụ ahụ. Ọ bụ naanị na ọnọdụ nke ihe na-agbanwe mgbe ọ na-ekpo ọkụ, ma usoro ahụ adịghị agbanwe agbanwe. Ọ ka bụ nwa afọ. Dịka ọmụmaatụ, mgbe ọkụ na-agbaze kandụl, enwere ike iweghachi ya na kandụl mbụ, ma ọkụ kandụl bụ mgbanwe kemịkal.

1. Thermoplastics

Ọ na-adị nro ma dị nro mgbe ọ na-ekpo ọkụ, na-esikwa ike mgbe ọ dị jụụ. Usoro a na-agbanwe agbanwe ma nwee ike ịbụ reperiri. Polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, acrylic plastic, polyolefins ndị ọzọ na ha copolymers, polysulfide, polyphenylene ether, chlorinated polyether, wdg Ọ bụ thermoplastic. Agbụ molikula resin na thermoplastics niile bụ ahịrị ma ọ bụ alaka. Enweghị njikọ kemịkalụ n'etiti agbụ molekụla, ha na-adị nro ma na-asọpụta mgbe ọkụ. Usoro nke jụrụ oyi na ike siri ike bụ mgbanwe anụ ahụ.

2. Thermosetting plastik

Mgbe ọ na-ekpo ọkụ maka oge mbụ, ọ nwere ike ime ka ọ dị nro ma na-asọba. Mgbe ọ na-ekpo ọkụ na ụfọdụ okpomọkụ, mmeghachi omume kemịkal na-apụta na-agafe na njikọ ma sie ike iji sie ike. Mgbanwe a agaghị agbanwe agbanwe. Mgbe nke ahụ gasịrị, mgbe ọ na-ekpo ọkụ ọzọ, ọ gaghịzi adị nro ma na-asọba. Ọ bụ n'ihi njirimara a ka a na-eme usoro nhazi ahụ, a na-eji mmiri plastik eme ihe n'oge okpomọkụ mbụ iji mejupụta oghere n'okpuru nrụgide, wee sie ike n'ime ngwaahịa nke ọdịdị na nha. Ihe a na-akpọ thermoset.

The resin nke thermosetting plastik bụ linear ma ọ bụ alaka tupu agwọ ya. Mgbe a gwọchara ya, a na-emepụta njikọ kemịkalụ n'etiti ụdọ molekụla iji mepụta usoro netwọk nwere akụkụ atọ. Ọ bụghị naanị na a gaghị agbaze ya ọzọ, mana enweghị ike ịgbaze ya na ihe mgbaze. Phenolic, aldehyde, melamine formaldehyde, epoxy, polyester unsaturated, silicone na plastik ndị ọzọ bụ plastik na-ekpo ọkụ.

Thermoplastic vs Thermoset