Gabatarwa TPU

Thermoplastic polyurethane (TPU) wani elastomer na thermoplastic mai narkewa ne tare da tsayin daka da sassauci. Yana da halaye na duka filastik da roba kuma don haka yana nuna kaddarorin kamar karko, sassauƙa da kyakkyawan ƙarfi mai ƙarfi.

TPU, sabon ƙarni na thermoplastic elastomer abu. Tsarinsa ya haɗa da yanki mai wuya da yanki mai laushi, wanda polyols, isocyanate da mai shimfiɗa sarkar ke yi ta hanyar motsa jiki.
Siffofin TPU sun haɗa da abokantaka na muhalli, sauƙin sarrafawa, aiki iri-iri, sake yin amfani da su, da dai sauransu.TPU yana da kyawawan kayan jiki, juriya na abrasion, canza launi mai sauƙi, babban elasticity, juriya na yanayi, juriya mai da ƙarancin zafin jiki da dai sauransu, ana amfani dashi sosai a cikin wayar. harka, overmolding, takalma, fim, m, bel & conveyor, waya & na USB da dai sauransu.

Dangane da nau'in polyols, ana iya raba TPU zuwa darajar polyester, darajar polyether, darajar polycaprolactone da darajar polycarbonate da sauransu. Daban-daban na TPU suna da dukiya daban-daban, ana iya amfani da su a aikace-aikace daban-daban. Kewayon taurin TPU yana da faɗi, yana rufe 50A-85D.

• Yanki mai laushi (polyether ko polyester): An gina shi daga polyol da isocyanate wanda ke ba da sassauci da halayen elastomeric na TPU.
• Hard Segment ( aromatic ko aliphatic): An gina shi daga sarkar mai tsawo da isocyanate yana ba TPU taurinsa da kayan aikin jiki.
  1. TPUs na aromatic - bisa ga isocyanates kamar MDI
  2. Aliphatic TPUs - dangane da isocyanates kamar HMDI, HDI da IPDI

Thermoplastic polyurethane suna na roba da narke-aiki. Abubuwan da ake ƙarawa na iya haɓaka kwanciyar hankali da juriya na zafi, rage juriya, da ƙara jinkirin harshen wuta, juriya na naman gwari, da yanayin yanayi.

TPUs masu ƙanshi suna da ƙarfi, resins-manufa na gaba ɗaya waɗanda ke tsayayya da harin ƙwayoyin cuta, suna tsayawa da kyau ga sinadarai. Wani koma baya na ado, duk da haka, shine dabi'ar ƙamshin ƙasƙanci ta hanyar hanyoyin tsattsauran ra'ayi waɗanda ke jawo ta hanyar fallasa ga zafi ko hasken ultraviolet. Wannan lalata yana haifar da canza launin samfur da asarar kaddarorin jiki.

Additives irin su antioxidants, UV absorbers, hana amine stabilizers ana amfani da su don kare polyurethanes daga UV haske-induced hadawan abu da iskar shaka, sabili da haka sanya thermoplastic polyurethanes dace da fadi da kewayon aikace-aikace da zai iya bukatar duka thermal da / ko kwanciyar hankali haske.

Aliphatic TPU, a gefe guda, suna da haske na zahiri kuma suna tsayayya da canza launin daga bayyanar UV. Hakanan a bayyane suke, wanda ya sa su dace da laminates don rufe gilashin da glazing na tsaro.