TPU mai tushen polyether

TPU mai tushen polyetherwani nau'i ne naelastomer na polyurethane mai thermoplasticGabatarwar sa ta Turanci kamar haka:

### Tsarin Halitta da Haɗawa: TPU mai tushen Polyether galibi ana haɗa shi ne daga 4,4′-diphenylmethane diisocyanate (MDI), polytetrahydrofuran (PTMEG), da 1,4-butanediol (BDO). Daga cikinsu, MDI yana samar da tsari mai tauri, PTMEG ya ƙunshi ɓangaren laushi don ba wa kayan sassauci, kuma BDO yana aiki azaman mai faɗaɗa sarka don ƙara tsawon sarkar kwayoyin halitta. Tsarin haɗakarwa shine cewa MDI da PTMEG sun fara amsawa don samar da prepolymer, sannan prepolymer ya fuskanci amsawar faɗaɗa sarka tare da BDO, kuma a ƙarshe, TPU mai tushen polyether an samar da shi ƙarƙashin aikin mai haɓaka.

### Halayen Tsarin Sarkar kwayoyin halitta ta TPU tana da tsarin layi na tubalan nau'in (AB)n, inda A sashi ne mai laushi mai nauyin polyether mai nauyin kwayoyin halitta mai nauyin kwayoyin halitta 1000-6000, B gabaɗaya shine butanediol, kuma tsarin sinadarai tsakanin sarkar AB shine diisocyanate.

### Fa'idodin Aiki -

**Kyakkyawan Juriyar Hydrolysis**: Haɗin polyether (-O-) yana da kwanciyar hankali mafi girma fiye da haɗin polyester (-COO-), kuma ba shi da sauƙin karyewa da lalacewa a cikin yanayi mai zafi da danshi. Misali, a cikin gwaji na dogon lokaci a 80°C da 95% na ɗanɗano, ƙimar riƙe ƙarfin tensile, TPU mai tushen polyether, ya wuce 85%, kuma babu raguwa a bayyane a cikin ƙimar murmurewa ta roba. – **Kyakkyawan Ragewar Ƙananan Zafi**: Zafin canjin gilashi (Tg) na ɓangaren polyether ya yi ƙasa (yawanci ƙasa da -50°C), wanda ke nufin cewaTPU mai tushen polyetherhar yanzu yana iya kiyaye kyakkyawan sassauci da sassauci a cikin yanayin zafi mai ƙarancin zafi. A cikin gwajin tasirin zafi mai ƙarancin zafi -40°C, babu wani abin da ke faruwa na karyewar karyewa, kuma bambancin aikin lanƙwasawa daga yanayin zafin jiki na yau da kullun bai wuce 10% ba – **Kyakkyawan Juriyar Tsabtace Sinadarai da Juriyar Kwayoyin cuta**:TPU mai tushen polyetheryana da juriya mai kyau ga yawancin sinadarai masu narkewa na polar (kamar barasa, ethylene glycol, acid mai rauni da maganin alkali), kuma ba zai kumbura ko narkewa ba. Bugu da ƙari, ɓangaren polyether ba ya narkewa cikin sauƙi ta hanyar ƙwayoyin cuta (kamar mold da ƙwayoyin cuta), don haka yana iya guje wa gazawar aiki da zaizayar ƙwayoyin cuta ke haifarwa lokacin da ake amfani da shi a cikin ƙasa mai danshi ko muhallin ruwa. – **Daidaitaccen Kayayyakin Inji**: A matsayin misali, taurin bakinsa shine 85A, wanda ke cikin rukunin elastomers masu matsakaicin ƙarfi. Ba wai kawai yana riƙe da babban sassauci da sassauci na TPU ba, har ma yana da isasshen ƙarfin tsari, kuma yana iya cimma daidaito tsakanin "murmurewa mai laushi" da "tsayin siffa". Ƙarfin taurinsa zai iya kaiwa 28MPa, tsawaita lokacin karyewa ya wuce 500%, kuma ƙarfin tsagewa shine 60kN/m.

### Filin Amfani: Ana amfani da TPU mai tushen polyether sosai a fannoni kamar magani, motoci, da kuma waje. A fannin likitanci, ana iya amfani da shi don yin catheters na likitanci saboda kyawun yanayinsa, juriyar hydrolysis da juriyar ƙwayoyin cuta. A fannin motoci, ana iya amfani da shi don bututun injin, hatimin ƙofa, da sauransu saboda iyawarsa ta jure yanayin zafi da danshi mai yawa, ƙarancin laushi da juriyar ozone. A fannin waje, ya dace da yin membranes na hana ruwa shiga waje, a yanayin zafi mai ƙarancin zafi, da sauransu.