He aha ka mea PU?
Ka wehewehe kumu o ka mea PU
Kū ʻo PU no Polyurethane, kahi mea polymer i hoʻohana nui ʻia i nā ʻoihana like ʻole. Hoʻokumu ʻia ka polyurethane e ka hopena kemika ma waena o ka isocyanate a me ka polyol, a he ʻano nui kona ʻano kino a me nā waiwai kemika. No ka mea hiki i ka PU ke hoʻololi i kona mau waiwai ma o ka hoʻololi ʻana i kāna haku mele, hoʻohana ʻia ia i nā ʻano hana like ʻole, mai nā lole a hiki i nā mea hana.
Hoʻokaʻawale a me nā waiwai o PU
Hiki ke hoʻokaʻawale ʻia ka Polyurethane i nā ʻano ʻano like ʻole, me nā ʻōhua paʻa, nā ʻūhā maʻalahi, nā elastomers, nā uhi a me nā mea hoʻopili. Hoʻohana maʻamau ʻia nā ʻūhā paʻa no ka insulation a me nā panela kūkulu hale, ʻoiai ʻo nā ʻūhā maʻalahi e hoʻohana nui ʻia i nā lako, nā noho kaʻa a me nā moena. ʻO nā Elastomers, ma ka ʻaoʻao ʻē aʻe, hōʻike i ka elasticity e like me ka lāʻau a hoʻohana ʻia no nā kapuaʻi kāmaʻa, nā kaʻa a pēlā aku. Ma muli o kona elasticity maikaʻi, kū'ē abrasion, kū'ē i kaʻaila a me ke kū'ē kahiko, hōʻike nā mea PU i ka hana maikaʻi loa i nā noi likeʻole.
Hoʻohana i ka PU ma nā ʻoihana like ʻole
Loaʻa i ka Polyurethane kahi ākea o nā noi ma nā ʻano āpau. No ka laʻana, ma ka ʻoihana textile, hoʻohana mau ʻia ʻo PU i ka hana ʻana i ka ʻili artificial, he ʻano like me ka ʻili akā ʻoi aku ka maʻalahi a me ka maʻalahi o ka mālama ʻana. I ka ʻoihana kūkulu hale, hoʻohana ʻia ka puʻupuʻu PU ma ke ʻano he mea insulation kiʻekiʻe, i makemake ʻia no kāna conductivity thermal haʻahaʻa a me ke kūpaʻa ʻana o ka wai. I ka ʻoihana kaʻa, hoʻohana ʻia nā mea PU no ka hana ʻana i nā pahu noho a me nā ʻāpana ʻoki o loko e hāʻawi i ka hōʻoluʻolu maikaʻi a me ka lōʻihi.
ʻO ke aloha kaiapuni a me ka hoʻomau o nā mea PU
Ke hoʻonui nei ka ʻike kaiapuni, ua lilo ka hoʻomau ʻana o nā mea PU i mea hopohopo nui. ʻO ka mea maʻamau, hiki ke hoʻohana ʻia kekahi mau kemika ʻino i ka hana ʻana o PU, akā i nā makahiki i hala iho nei, ua hoʻomohala ka ʻoihana i nā kaʻina hana hoʻonaninani e like me ka polyurethane wai a me ka hoʻohana ʻana i nā mea hou. ʻO kēia mau mea PU hou ʻaʻole e hōʻemi wale i ka hopena i ke kaiapuni, akā hoʻonui pū i ka palekana o ka huahana a me ka hoʻomau.
Hōʻuluʻulu manaʻo
He aha ka mea PU? He mea maʻalahi, hana kiʻekiʻe ka polymer i hoʻohana nui ʻia i nā ʻano ʻoihana like ʻole. Inā ma ka lole, ke kūkulu ʻana, ka automotive, a i ʻole ka palekana o ke kaiapuni, makemake ʻia ʻo PU no kāna mau waiwai physicochemical maikaʻi loa. Me ka holomua o ka ʻenehana a me ka hoʻomaikaʻi ʻana i nā koi o ka mālama ʻana i ke kaiapuni, e hoʻonui a hoʻomaikaʻi ka pae noi a me ka pae ʻenehana o nā mea PU.