Iji TPU dị ka onye na-agbanwe agbanwe

Iji belata ọnụ ahịa ngwaahịa ma nweta arụmọrụ ọzọ,polyurethane thermoplasticEnwere ike iji elastomers mee ihe dị ka ihe ndị na-eme ka ihe sie ike nke a na-ejikarị eme ihe iji mee ka ihe dị iche iche na-eme ka thermoplastic na roba gbanwee sie ike.

N'ihipolyurethaneỌ bụ polima nwere oke polar, ọ nwere ike dakọtara na polar resins ma ọ bụ roba, dịka mgbe ejiri ya na chlorinated polyethylene (CPE) mepụta ngwaahịa ahụike; Ịgwakọta ya na ABS nwere ike dochie ojiji nke plastik thermoplastic injinia; Mgbe ejiri ya na polycarbonate (PC), ọ nwere ihe ndị dị ka iguzogide mmanụ, iguzogide mmanụ, na iguzogide mmetụta, a pụkwara iji ya mee ahụ ụgbọala; Ịgwakọta ya na polyester nwere ike ime ka arụmọrụ siri ike ya ka mma; Na mgbakwunye, ọ nwere ike dakọtara nke ọma na polyvinyl chloride, polyoxymethylene (POM), ma ọ bụ polyvinylidene chloride; Polyester polyurethane nwere ike dakọtara nke ọma na roba nitrile 15% ma ọ bụ roba nitrile 40%/roba nitrile/polyvinyl chloride ngwakọta; Polyether polyurethane nwekwara ike dakọtara nke ọma na 40% nitrile roba/polyvinyl chloride ngwakọta; Ọ nwekwara ike dakọtara na acrylonitrile styrene (SAN) copolymers; Ọ nwere ike ịmepụta nhazi netwọk interpenetrating (IPN) yana polysiloxanes reactive. A na-emepụta ọtụtụ ihe nrapado agwakọtara ndị a kpọtụrụ aha n'elu n'ihu ọha.
N'afọ ndị na-adịbeghị anya, enwere ọtụtụ nnyocha gbasara ime ka POM sie ike site na ndị ọkachamara na-eme nnyocha na-ekwu na ọ na-eme ka POM sie ike.TPUna China. Ngwakọta nke TPU na POM abụghị naanị na ọ na-eme ka iguzogide okpomọkụ dị elu na njirimara igwe nke TPU ka mma, kamakwa ọ na-eme ka POM sie ike nke ukwuu. Ụfọdụ ndị nchọpụta egosila na n'ule mgbawa nrụgide, ma e jiri ya tụnyere matrix POM, alloys POM na mgbakwunye TPU na-agafe site na mgbawa gbawara agbawa gaa na mgbawa ductile. Mgbakwunye nke TPU na-enyekwa POM arụmọrụ ebe nchekwa ọdịdị. Mpaghara kristal nke POM na-eje ozi dị ka usoro edobere nke alloy ebe nchekwa ọdịdị, ebe mpaghara amorphous nke TPU amorphous na POM na-eje ozi dị ka usoro a na-agbanwe agbanwe. Mgbe okpomọkụ nzaghachi mgbake bụ 165 ℃ na oge mgbake bụ 120 s, ọnụego mgbake nke alloy ahụ ruru ihe karịrị 95%, mmetụta mgbake ahụ kacha mma.
Ọ na-esiri ike ikwekọ TPU na ihe ndị na-abụghị polar dịka polyethylene, polypropylene, roba ethylene propylene, roba butadiene, roba isoprene, ma ọ bụ ntụ ntụ roba mkpofu, ọ nweghịkwa ike imepụta ihe ndị mejupụtara ya nke ọma. Ya mere, a na-ejikarị usoro ọgwụgwọ elu dị ka plasma, corona discharge, kemịkalụ mmiri, primer, ire ọkụ, ma ọ bụ gas reactive eme ihe maka nke ikpeazụ. Dịka ọmụmaatụ, ngwaahịa ikuku America na ụlọ ọrụ kemịkalụ nwere ike imeziwanye modulus na-agbagọ agbagọ, ike nrụgide, na iyi nguzogide nke ntụ ntụ polyethylene dị oke elu nke nwere oke molekul dị arọ nke nde 3-5 mgbe ọgwụgwọ elu gas F2/O2 na-arụ ọrụ, ma tinye ya na polyurethane elastomers na oke 10%. Ọzọkwa, enwere ike itinye ọgwụgwọ elu gas F2/O2 na eriri dị mkpụmkpụ ogologo nke nwere ogologo 6-35mm akpọrọ n'elu, nke nwere ike ime ka ike na ike ndọda nke ihe mejupụtara ahụ ka mma.