Iji belata ọnụ ahịa ngwaahịa ma nweta arụmọrụ ọzọ,polyurethane thermoplasticEnwere ike iji elastomers dị ka ihe ndị na-eme ka ike sie ike na-eme ka ihe dị iche iche na-ekpo ọkụ na rọba gbanwee.
N'ihipolyurethaneịbụ polar polar nke ukwuu, ọ nwere ike dakọtara na resin polar ma ọ bụ rubbers, dị ka mgbe ejiri ya na chlorinated polyethylene (CPE) na-emepụta ngwaahịa ahụike;Ịgwakọta na ABS nwere ike dochie ojiji nke injinia thermoplastic plastik;Mgbe ejikọtara ya na polycarbonate (PC), ọ nwere ihe ndị dị ka nkwụsị mmanụ, mmanụ ọkụ, na mmetụta mmetụta, a pụkwara iji ya mee ozu ụgbọ ala;Ịgwakọta na polyester nwere ike imeziwanye arụmọrụ ike ya;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 15% nitrile roba ma ọ bụ 40% nitrile roba / polyvinyl chloride ngwakọta roba;Polyether polyurethane nwekwara ike dakọtara nke ọma na 40% nitrile roba / polyvinyl chloride ngwakọta nrapado;Ọ nwekwara ike dakọtara na acrylonitrile styrene (SAN) copolymers;Ọ nwere ike ịmepụta netwọk interpenetrating (IPN) yana polysiloxanes reactive.Ọtụtụ n'ime ihe nrapado agwakọta ndị a kpọtụrụ aha n'elu ka ewepụtalarị n'ihu ọha.
N'ime afọ ndị na-adịbeghị anya, enwere mmụba na-arịwanye elu nke nyocha na ike siri ike nke POM site naTPUna China.Ngwakọta nke TPU na POM abụghị naanị na-eme ka nguzogide okpomọkụ dị elu na akụrụngwa akụrụngwa nke TPU, kamakwa na-emesi POM ike.Ụfọdụ ndị na-eme nchọpụta egosila na n'ime ule mgbawa mgbaji, ma e jiri ya tụnyere POM matrix, POM alloys na TPU mgbakwunye na-enwe mgbanwe site na mgbaji na-agbaji agbaji gaa na ọkpụkpụ ductile.Mgbakwunye TPU na-enyekwa POM arụ ọrụ ebe nchekwa ọdịdị.Mpaghara kristal nke POM na-eje ozi dị ka akụkụ a kapịrị ọnụ nke alloy ebe nchekwa ọdịdị, ebe mpaghara amorphous nke TPU amorphous na POM na-eje ozi dị ka oge ntụgharị.Mgbe mgbake nzaghachi okpomọkụ bụ 165 ℃ na mgbake oge bụ 120 s, mgbake ọnụego nke alloy ruru n'elu 95%, na mgbake mmetụta kasị mma.
TPU siri ike dakọtara na ihe ndị na-abụghị polar polar dị ka polyethylene, polypropylene, ethylene propylene roba, roba butadiene, roba isoprene, ma ọ bụ uzuzu rubber, na enweghị ike ịmepụta ihe mgbagwoju anya na arụmọrụ dị mma.Ya mere, a na-ejikarị usoro ọgwụgwọ elu dị ka plasma, mwepu corona, kemistri mmiri, primer, ire ọkụ, ma ọ bụ gas na-emeghachi omume maka nke ikpeazụ.Dịka ọmụmaatụ, ngwaahịa ikuku America na ụlọ ọrụ kemịkalụ nwere ike melite modulus na-ehulata, ike tensile, ma na-eyi nguzogide polyethylene dị mma nke nwere oke molekul nke 3-5 nde mgbe F2/O2 na-arụ ọrụ gas n'elu ọgwụgwọ, na na-agbakwunye ya na polyurethane elastomers na nha 10%.Ọzọkwa, enwere ike itinye ọgwụgwọ F2 / O2 na-arụ ọrụ gas na eriri mkpụmkpụ elongated nwere ogologo 6-35mm nke a kpọtụrụ aha n'elu, nke nwere ike melite isi ike na akwa akwa nke ihe mejupụtara.
Oge nzipu: Jan-19-2024