Polyether na tushen TPU

Polyether na tushen TPUnau'i ne nathermoplastic polyurethane elastomer. Gabatarwarta ta Ingilishi kamar haka:

### Abun da aka haɗa da haɗin TPU na tushen Polyether galibi an haɗa shi daga 4,4'-diphenylmethane diisocyanate (MDI), polytetrahydrofuran (PTMEG), da 1,4-butanediol (BDO). Daga cikin su, MDI yana ba da tsari mai tsauri, PTMEG ya ƙunshi sassa mai laushi don ba da kayan aiki tare da sassauƙa, kuma BDO yana aiki azaman sarkar sarkar don ƙara tsayin sarkar kwayoyin halitta. Tsarin haɗakarwa shine MDI da PTMEG sun fara amsawa don samar da prepolymer, sannan prepolymer ɗin ya sami hanyar haɓaka sarƙoƙi tare da BDO, kuma a ƙarshe, an kafa TPU na tushen polyether ƙarƙashin aikin mai haɓakawa.

### Halayen Tsari Tsarin kwayoyin halitta na TPU yana da nau'in (AB) nau'in toshe layin layi, inda A wani yanki ne mai laushi mai nauyin nau'in polyether mai nauyin kwayoyin halitta mai nauyin 1000-6000, B shine gabaɗaya butanediol, kuma tsarin sinadarai tsakanin sarƙoƙin AB shine diisocyanate.

### Amfanin Aiki -

** Kyakkyawan juriya na Hydrolysis ***: Haɗin polyether (-O-) yana da kwanciyar hankali mafi girma fiye da haɗin polyester (-COO-), kuma ba shi da sauƙin karyewa da raguwa a cikin ruwa ko yanayi mai zafi da ɗanɗano. Alal misali, a cikin gwajin dogon lokaci a 80 ° C da 95% zafi na dangi, ƙarfin riƙewar ƙarfi, TPU na tushen polyether, ya wuce 85%, kuma babu wani raguwa a cikin ƙimar farfadowa na roba. - ** Kyakkyawan Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Gilashin (Tg) na ɓangaren polyether yana da ƙasa (yawanci ƙasa -50 ° C), wanda ke nufin cewaTPU na tushen polyetherhar yanzu zai iya kula da kyawawa mai kyau da sassauci a cikin ƙananan yanayin zafi. A cikin gwajin tasirin ƙananan zafin jiki na -40 ° C, babu wani abin da ya faru na karaya, kuma bambancin aikin lankwasawa daga yanayin zafin jiki na al'ada bai wuce 10%. - ** Kyakkyawan juriya na lalata sinadarai da juriya na ƙwayoyin cuta **:Polyether na tushen TPUyana da kyakykyawan juriya ga mafi yawan abubuwan kaushi na polar (kamar barasa, ethylene glycol, raunin acid da maganin alkali), kuma ba zai kumbura ko narke ba. Bugu da ƙari, ɓangaren polyether ba a sauƙaƙe ta hanyar ƙananan ƙwayoyin cuta (irin su mold da kwayoyin cuta), don haka zai iya guje wa gazawar aikin da ke haifar da yashwar ƙananan ƙwayoyin cuta lokacin amfani da shi a cikin ƙasa mai laushi ko ruwa. - ** Madaidaitan Kayayyakin Injini ***: Ɗaukar misali, taurinta na Shore shine 85A, wanda ke cikin nau'in elastomer masu matsakaicin ƙarfi. Ba wai kawai yana riƙe da babban ƙarfin hali da sassauci na TPU ba, amma kuma yana da isasshen ƙarfin tsari, kuma yana iya cimma daidaituwa tsakanin "farfadowa na roba" da "kwanciyar hankali". Ƙarfin ƙarfinsa na iya isa 28MPa, haɓakawa a hutu ya wuce 500%, kuma ƙarfin hawaye shine 60kN / m.

Ana amfani da Filayen Aikace-aikacen TPU na tushen Polyether sosai a fannoni kamar jiyya, motoci, da waje. A cikin fannin likitanci, ana iya amfani da shi don yin catheters na likitanci saboda kyakkyawan yanayin halitta, juriya na hydrolysis da juriya na ƙwayoyin cuta. A cikin filin mota, ana iya amfani da shi don bututun injin injin, hatimin kofa, da dai sauransu saboda ikonsa na jure yanayin yanayin zafi da zafi, ƙarancin zafin jiki da juriya na ozone. A cikin filin waje, ya dace don yin murfin ruwa na waje, a cikin ƙananan yanayin zafi, da dai sauransu.