Ka Hoʻohana ʻana o TPU ma ke ʻano he Flexibilizer

I mea e hōʻemi ai i nā kumukūʻai huahana a loaʻa ka hana hou aʻe,ka thermoplastic polyurethaneHiki ke hoʻohana ʻia nā elastomers ma ke ʻano he mau mea hoʻoikaika maʻamau e hoʻoikaika i nā ʻano thermoplastic like ʻole a me nā mea rubber i hoʻololi ʻia.

Ma muli opolyurethaneʻOiai he polymer polar kiʻekiʻe, hiki ke kūpono me nā resins polar a i ʻole nā ​​​​rubbers, e like me ka wā e hoʻohana ʻia ai me ka chlorinated polyethylene (CPE) e hana i nā huahana lapaʻau; ʻO ka hui pū ʻana me ABS hiki ke pani i ka hoʻohana ʻana i nā plastics thermoplastic engineering; Ke hoʻohana ʻia me ka polycarbonate (PC), loaʻa iā ia nā waiwai e like me ke kūpaʻa ʻaila, ke kūpaʻa wahie, a me ke kūpaʻa hopena, a hiki ke hoʻohana ʻia e hana i nā kino kaʻa; ʻO ka hui pū ʻana me ka polyester hiki ke hoʻomaikaʻi i kāna hana paʻakikī; Eia kekahi, hiki ke kūpono me ka polyvinyl chloride, polyoxymethylene (POM), a i ʻole polyvinylidene chloride; Hiki i ka Polyester polyurethane ke kūpono me ka 15% nitrile rubber a i ʻole 40% nitrile rubber/polyvinyl chloride blend rubber; Hiki i ka Polyether polyurethane ke kūpono me ka 40% nitrile rubber/polyvinyl chloride blend adhesive; Hiki ke kūlike me nā acrylonitrile styrene (SAN) copolymers; Hiki iā ia ke hana i kahi ʻano pūnaewele interpenetrating (IPN) me nā polysiloxanes reactive. ʻO ka hapa nui o nā mea hoʻopili i hui ʻia i luna ua hana kūhelu ʻia.
I nā makahiki i hala iho nei, ua nui ka noiʻi ʻana e pili ana i ka hoʻoikaika ʻana o ka POM e nā mea kanu.TPUma 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 iā POM. Ua hōʻike kekahi poʻe noiʻi i nā hoʻokolohua haki tensile, i hoʻohālikelike ʻia me ka matrix POM, ʻo nā hui POM me ka hoʻohui ʻana o TPU e hele i kahi hoʻololi mai ka haki brittle a i ka haki ductile. ʻO ka hoʻohui ʻana o TPU e hāʻawi pū iā POM me ka hana hoʻomanaʻo ʻano. ʻO ka ʻāpana crystalline o POM e lawelawe ma ke ʻano he pae paʻa o ka hui hoʻomanaʻo ʻano, ʻoiai ʻo ka ʻāpana amorphous o amorphous TPU a me POM e lawelawe ma ke ʻano he pae hoʻohuli. Ke 165 ℃ ka mahana pane hoʻōla a he 120 s ka manawa hoʻōla, hiki i ka helu hoʻōla o ka hui ma luna o 95%, a ʻo ka hopena hoʻōla ka mea maikaʻi loa.
He paʻakikī ke kūlike o 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 rubber, a ʻaʻole hiki ke hana i nā mea hui me ka hana maikaʻi. No laila, hoʻohana pinepine ʻia nā ʻano hana mālama ʻili e like me ka plasma, corona discharge, wet chemistry, primer, flame, a i ʻole reactive gases no ka mea hope. No ka laʻana, hiki i nā huahana ea ʻAmelika a me nā hui kemika ke hoʻomaikaʻi nui i ka modulus bending, ka ikaika tensile, a me ke kūpaʻa ʻana o ka pauka polyethylene fine weight molecular ultra-high me ke kaumaha molecular o 3-5 miliona ma hope o ka mālama ʻana i ka ʻili kinoea F2/O2, a hoʻohui iā ia i nā polyurethane elastomers ma kahi ratio 10%. Eia kekahi, hiki ke hoʻopili ʻia ka mālama ʻili kinoea F2/O2 i nā olonā pōkole elongated i kuhikuhi ʻia me ka lōʻihi o 6-35mm i ʻōlelo ʻia ma luna, hiki ke hoʻomaikaʻi i ka paʻakikī a me ka haehae o ka mea hui.