Okwu Mmalite TPU

Thermoplastic polyurethane (TPU) bụ elastomer thermoplastic na-agbaze nke nwere ogologo ogologo oge na mgbanwe. Ọ nwere njiri mara ma plastik na rọba ma si otú ahụ gosipụta ihe ndị dị ka ogologo oge, mgbanwe yana ike ike dị mma.

TPU, ọgbọ ọhụrụ nke thermoplastic elastomer ihe. Nhazi ya gụnyere akụkụ siri ike na akụkụ dị nro, nke polyols mere, isocyanate na chain extender site na mmeghachi omume condensation.
Njirimara nke TPU gụnyere gburugburu ebe obibi enyi na enyi, nhazi dị mfe, arụmọrụ dịgasị iche iche, imegharị ihe wdg.TPU nwere ihe onwunwe dị mma nke anụ ahụ, nkwụsị abrasion, agba agba dị mfe, elu elasticity, iguzogide ihu igwe, mmanụ na-eguzogide na obere okpomọkụ mgbanwe wdg, na-ejikarị na ekwentị. ikpe, overmolding, akpụkpọ ụkwụ, ihe nkiri, nrapado, belt & ebu, waya & cable wdg.

Dabere na ụdị polyols, TPU nwere ike kewaa n'ime ọkwa polyester, ọkwa polyether, ọkwa polycaprolactone na ọkwa polycarbonate wdg. Dị ka ụdị isocyanate si dị, TPU nwere ike kewaa n'ime TPU aromatic na aliphatic TPU. TPU dị iche iche nwere ihe onwunwe dị iche iche, enwere ike iji ya na ngwa dị iche iche. Oke ike nke TPU obosara, na-ekpuchi 50A-85D.

• Akụkụ dị nro (polyether ma ọ bụ polyester): A na-ewu ya site na polyol na isocyanate nke na-enye mgbanwe na àgwà elastomeric nke TPU.
• Akụkụ siri ike (aromatic ma ọ bụ aliphatic): A na-ewu ya site na eriri eriri na isocyanate na-enye TPU ike ya na arụ ọrụ anụ ahụ.
  1. TPU aromatic - dabere na isocyanates dị ka MDI
  2. Aliphatic TPUs - dabere na isocyanates dị ka HMDI, HDI na IPDI

Thermoplastic polyurethane na-agbanwe na agbaze-processable. Ihe mgbakwunye nwere ike imeziwanye nkwụsi ike nke akụkụ yana nguzogide okpomọkụ, belata esemokwu, na ịbawanye ọkụ ọkụ, nguzogide ero, na ihu igwe.

TPU aromatic siri ike, resins zuru oke na-eguzogide ọgụ nke ụmụ nje, na-eguzo nke ọma na kemịkalụ. Otú ọ dị, ihe ndọghachi azụ nke ịchọ mma bụ àgwà nke aromatics na-eweda ya site na ụzọ radical free na-ebute site na ikpughe na ọkụ ma ọ bụ ultraviolet. Nbibi a na-eduga na ngbanwe nke ngwaahịa na ọnwụ nke ihe anụ ahụ.

A na-eji ihe mgbakwunye dị ka antioxidants, UV absorbers, mgbochi amine stabilizers na-echebe polyurethanes site na ọkụ ọkụ UV na-eme ka ọ bụrụ ihe na-eme ka polyurethane thermoplastic dabara maka ngwa dịgasị iche iche nke nwere ike ịchọ ma okpomọkụ na / ma ọ bụ nkwụsi ike ọkụ.

N'aka nke ọzọ, Aliphatic TPU kwụsiri ike ma na-eguzogide mwepu site na mkpughe UV. Ha dịkwa anya nke ọma, nke na-eme ka ha bụrụ laminates dabara adaba maka iko na-ekpuchi enyo na glazing nchekwa.