Kedu ihe bụ thermoplastics?

Thermoplastics bụ klaasị plastik nke bụ rọba n'otu okpomọkụ, na-esi ike mgbe ọ jụrụ oyi, ma nwee ike r.epena usoro a. Ihe e ji mara ihe owuwu molekụla ahụ bụ ngwakọta polymer linear, nke na-enweghị otu ndị na-arụ ọrụ, na anaghị agafe njikọ intermolecular linear mgbe ọ na-ekpo ọkụ. Enwere ike ịmegharị ngwaahịa mkpofu ka ọ bụrụ ngwaahịa ọhụrụ ma emegharịa ya. Ụdị ndị bụ isi bụ polyolefins (vinyl, olefins, styrenes, acrylates, olefins nwere fluorine, wdg), cellulose, polyether polyesters na aromatic heterocyclic polymers, wdg.

definition

Thermoplastics bụ plastik ndị a na-ejikarị eme ihe. A na-emepụta ha na resin thermoplastic dị ka ihe bụ isi na ihe mgbakwunye dị iche iche. N'okpuru ọnọdụ okpomọkụ ụfọdụ, plastik nwere ike ime ka ọ dị nro ma ọ bụ gbazee n'ụdị ọ bụla, na ọdịdị ahụ na-anọgide na-agbanwe agbanwe mgbe ọ jụrụ; steeti a nwere ike ịbụ repeted ọtụtụ ugboro na mgbe niile nwere plasticity, na nke a repetition bụ naanị mgbanwe anụ ahụ, nke a na-akpọ thermoplastic. rọba.

Tinyere polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, acrylic plastik, ndị ọzọ polyolefins na ha copolymers, polysulfone, polyphenylene ether.

Nhazi nhazi

Enwere ike kewaa thermoplastics ka ọ bụrụ plastik ebumnuche izugbe, rọba injinia, na rọba pụrụ iche dabere na njirimara arụmọrụ ha, ụdị ojiji dị iche iche, yana ụdị teknụzụ ịkpụzi.

Ihe ndị bụ isi e ji emepụta plastik n'ozuzu bụ: ngwa sara mbara, nhazi dị mma, na arụmọrụ zuru oke. Dị ka polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) ka a makwaara dị ka "plastik ise n'ozuzu nzube".

The e ji mara nke engineering plastics na pụrụ iche plastics bụ: ụfọdụ owuwu na Njirimara nke elu polymers bụ karịsịa pụtara ìhè, ma ọ bụ ịkpụzi teknụzụ dịtụ siri ike, wdg, na-ejikarị na ọkachamara engineering ma ọ bụ pụrụ iche ubi na oge. Ndị isi injinia plastik bụ: naịlọn (Nylon), polycarbonate (PC), polyurethane (PU), polytetrafluoroethylene (Teflon), PTFE), polyethylene terephthalate (PET), wdg, Plastics pụrụ iche dị ka "synthetic heart valves" na "njikọ artificial" dị ka "polymers ahụike".