Ngwaahịa

Polyurethane (PU), aha zuru oke bụ polyurethane, bụ ngwakọta polymer.Ọ bụ Otto Bayer mere ya na 1937. E kewara Polyurethane ụzọ abụọ: ụdị polyester na ụdị polyether.Enwere ike ịme ha ka ọ bụrụ plastik polyurethane (karịsịa plastik ndị nwere ụfụfụ), eriri polyurethane (a na-akpọ spandex na China), polyurethane rubbers na elastomers.

Polyurethane dị nro na-abụkarị usoro ntanetị nke thermoplastic, nke nwere nkwụsi ike ka mma, nkwụsi ike nke kemịkalụ, nkwụsi ike na ihe eji arụ ọrụ karịa ihe ụfụfụ PVC, ma nwee obere nrụrụ mkpakọ.Ọ nwere ezigbo mkpuchi ọkụ, mkpuchi ụda, nguzogide ujo na arụmọrụ mgbochi nje.Ya mere, a na-eji ya dị ka nkwakọ ngwaahịa, ihe mkpuchi ụda, ihe nzacha.

Plastic polyurethane siri ike bụ ìhè dị arọ, magburu onwe ya na mkpuchi ụda na ikpo ọkụ ọkụ, nguzogide kemịkalụ, ezigbo ọkụ eletrik, nhazi dị mfe, na ntinye mmiri dị ala.A na-ejikarị ya eme ihe n'iwu ụlọ, ụgbọ ala, ụlọ ọrụ ụgbọ elu, ihe nhazi ihe mkpuchi okpomọkụ.

Ịrụ ọrụ nke polyurethane elastomer dị n'etiti plastik na roba, mmanụ na-eguzogide mmanụ, mkpuchi mkpuchi, obere okpomọkụ na-eguzogide, ịka nká, ike siri ike na elasticity.A na-ejikarị eme ihe na ụlọ ọrụ akpụkpọ ụkwụ na ụlọ ọrụ ahụike.A pụkwara iji polyurethane mee ihe ntanye, mkpuchi, akpụkpọ anụ sịntetik, wdg.

Polyurethane pụtara na 1930.Mgbe ihe fọrọ nke nta ka ọ bụrụ afọ 80 nke mmepe teknụzụ, ejirila ihe a mee ihe n'ọtụtụ ebe n'ihe gbasara ime ụlọ, ihe owuwu, ihe ndị dị mkpa kwa ụbọchị, ụgbọ njem, na ngwa ụlọ.