Hoʻolauna TPU

ʻO Thermoplastic polyurethane (TPU) he mea hoʻoheheʻe thermoplastic elastomer me ka lōʻihi a me ka maʻalahi. Loaʻa iā ia nā hiʻohiʻona o ka plastic a me ka rubber a no laila e hōʻike i nā waiwai e like me ka lōʻihi, ka maʻalahi a me ka ikaika tensile maikaʻi loa.

ʻO TPU, he hanauna hou o ka mea wela wela. Aia i loko o kona hale ka ʻāpana paʻakikī a me ka ʻāpana palupalu, i hana ʻia e polyols, isocyanate a me ka mea hoʻonui kaulahao e ka hopena condensation.
ʻO nā hiʻohiʻona o ka TPU e pili ana i ke kaiapuni, ka hana maʻalahi, ka hana like ʻole, ka hana hou ʻana a me nā mea ʻē aʻe. hihia, overmolding, kamaa, film, adhesive, kāʻei & conveyor, uea & uwea etc.

Wahi a ke ʻano polyols, hiki ke hoʻokaʻawale ʻia ka TPU i ka polyester grade, polyether grade, polycaprolactone grade a me polycarbonate grade etc. ʻO nā ʻano like ʻole o ka TPU he waiwai like ʻole, hiki ke hoʻohana ʻia i nā noi like ʻole. He ākea ka laulā paʻakikī o TPU, e uhi ana i ka 50A-85D.

• Māhele palupalu (polyether a polyester): Ua kūkulu ʻia ia mai loko mai o kahi polyol a me kahi isocyanate e hāʻawi ana i ka maʻalahi a me ke ʻano elastomeric o kahi TPU.
• Māhele Paʻa (ʻala a aliphatic paha): Ua kūkulu ʻia ia mai kahi mea hoʻonui kaulahao a me ka isocyanate e hāʻawi ana i ka TPU i kona paʻakikī a me nā waiwai hana kino.
  1. Nā TPU Aromatic - e pili ana i nā isocyanates e like me MDI
  2. Aliphatic TPUs - e pili ana i nā isocyanates e like me HMDI, HDI a me IPDI

ʻO nā polyurethanes Thermoplastic he elastic a hiki ke hoʻoheheʻe ʻia. Hiki i nā mea hoʻohui ke hoʻomaikaʻi i ke kūpaʻa dimensional a me ke kūpaʻa wela, hoʻemi i ka friction, a hoʻonui i ka hoʻopaʻa ʻana o ka lapalapa, ke kū ʻana o ka fungus, a me ka weatherability.

ʻO nā TPU Aromatic he mau resins ikaika nui e pale aku i ka hoʻouka ʻana e nā microbes, kū maikaʻi i nā kemika. ʻO kahi hoʻihoʻi maikaʻi, ʻo ia ke ʻano o ka hoʻohaʻahaʻa ʻana i nā mea ʻala e nā ala radical manuahi i hoʻoulu ʻia e ka ʻike ʻana i ka wela a i ʻole ke kukui ultraviolet. ʻO kēia hoʻohaʻahaʻa e alakaʻi i ka wehe ʻana o ka huahana a me ka nalowale o nā waiwai kino.

Hoʻohana ʻia nā mea hoʻohui e like me antioxidants, UV absorbers, hindered amine stabilizers no ka pale ʻana i nā polyurethanes mai ka UV light-induced oxidation a no laila e hana i nā polyurethanes thermoplastic i kūpono no ka laulā o nā noi e koi ai i ka wela a me ka māmā.

ʻO Aliphatic TPU, ma ka ʻaoʻao ʻē aʻe, he paʻa māmā a pale i ka discoloration mai ka ʻike UV. Maikaʻi maikaʻi nō hoʻi lākou, e hoʻolilo iā lākou i nā laminates kūpono no ka hoʻopili ʻana i nā aniani a me nā aniani palekana.