Hoʻohana ʻia o TPU ma ke ʻano he Flexibilizer

I mea e hōʻemi ai i nā kumukūʻai huahana a loaʻa ka hana hou aku,polyurethane thermoplasticHiki ke hoʻohana ʻia nā elastomers e like me nā mea hoʻopaʻapaʻa maʻamau e hoʻoikaika i nā ʻano thermoplastic a hoʻololi ʻia.

Ma muli opolyurethaneʻoiai he polymer polar nui, hiki ke hoʻohālikelike me nā resins polar a i ʻole rubbers, e like me ka hoʻohana ʻana me ka polyethylene chlorinated (CPE) e hana i nā huahana olakino; Hiki i ka hui ʻana me ABS ke hoʻololi i ka hoʻohana ʻana i nā plastic thermoplastic engineering; Ke hoʻohanaʻia me ka polycarbonate (PC), loaʻa iā ia nā waiwai e like me ke kū'ēʻana i kaʻaila, kaʻaila, a me ka hopena o ka hopena, a hiki ke hoʻohanaʻia e hana i nā kino kaʻa; Hiki i ka hui ʻana me ka polyester ke hoʻomaikaʻi i kāna hana paʻakikī; Eia hou, hiki ke kūpono me ka polyvinyl chloride, polyoxymethylene (POM), a i ʻole polyvinylidene chloride; Hiki ke hoʻopili maikaʻi ʻia ka polyester polyurethane me 15% nitrile rubber a i ʻole 40% nitrile rubber/polyvinyl chloride blend rubber; Hiki ke hoʻopili maikaʻi ʻia ka polyether polyurethane me 40% nitrile rubber/polyvinyl chloride blend adhesive; Hiki ke hui like me nā copolymers acrylonitrile styrene (SAN); Hiki iā ia ke hana i kahi ʻōnaehana interpenetrating network (IPN) me nā polysiloxanes reactive. ʻO ka hapa nui o nā mea i hoʻohui ʻia i ʻōlelo ʻia ma luna nei ua hana mua ʻia.
I nā makahiki i hala iho nei, ua hoʻonui ʻia ka nui o ka noiʻi e pili ana i ka paʻakikī o POM eTPUma Kina. ʻO ka hui ʻana o TPU a me POM ʻaʻole wale e hoʻomaikaʻi i ke kūpaʻa wela kiʻekiʻe a me nā waiwai mechanical o TPU, akā hoʻoikaika nui hoʻi i ka POM. Ua hōʻike kekahi poʻe noiʻi i ka hoʻāʻo ʻana i ka haʻihaʻi tensile, i hoʻohālikelike ʻia me ka matrix POM, nā huila POM me ka hoʻohui TPU e hoʻololi ʻia mai ka haʻihaʻi haʻihaʻi a i ka haki ductile. Hāʻawi ka hoʻohui o TPU i ka POM me ka hana hoʻomanaʻo hoʻomanaʻo. Hoʻohana ʻia ka ʻāpana crystalline o POM ma ke ʻano paʻa o ka hoʻomanaʻo hoʻomanaʻo hoʻomanaʻo, aʻo ka ʻāpana amorphous o TPU amorphous a me POM e lawelawe ma ke ʻano hoʻohuli. Ke 165 ℃ ka mahana o ka ho'ōla hou ʻana a ʻo ka manawa hoʻihoʻi he 120 s, ʻoi aku ka nui o ka hoʻihoʻi hou ʻana o ka alloy ma luna o 95%, a ʻo ka hopena hoʻihoʻi ka mea maikaʻi loa.
He paʻakikī ka TPU me nā mea polymer non-polar e like me ka polyethylene, polypropylene, ethylene propylene rubber, butadiene rubber, isoprene rubber, a i ʻole ka pauka ʻōpala, a ʻaʻole hiki ke hana i nā mea hoʻohui me ka hana maikaʻi. No laila, hoʻohana pinepine ʻia nā ʻano hana lapaʻau e like me ka plasma, corona discharge, wet chemistry, primer, flame, a i ʻole nā ​​kinoea reactive no ka hope. No ka laʻana, hiki i nā huahana ea ʻAmelika a me nā hui kemika ke hoʻomaikaʻi maikaʻi i ka modulus bending, ka ikaika tensile, a me ke kūpaʻa ʻana o ka pauka ultra-high molecular weight polyethylene fine pauka me ke kaumaha molekala o 3-5 miliona ma hope o ka mālama ʻana i ke kinoea ikaika F2/O2, a e hoʻohui iā ia i nā elastomers polyurethane ma kahi ratio 10%. Eia kekahi, hiki ke hoʻohana ʻia ka mālama kino kino kino F2/O2 i ka oriented elongated short fibers me ka lōʻihi o 6-35mm i ʻōlelo ʻia ma luna nei, hiki ke hoʻomaikaʻi i ka ʻoʻoleʻa a me ka haehae ʻana o ka mea i hoʻohui ʻia.