ʻO nā huahana polyurethane soft foam moʻo ka nui o ka poloka, hoʻomau, sponge, kiʻekiʻe resilience foam (HR), ʻili ʻili ponoʻī, ʻūhā hoʻomaha mālie, microporous foam a me semi-rigid energy-absorbing foam.He 50% o ka huina o ka huahana polyurethane.Nui nā ʻano huahana like ʻole a ke hoʻonui mau nei ke ʻano o ka noi, a ua komo lākou i nā ʻano hana like ʻole o ka hoʻokele waiwai o ka ʻāina: nā mea pono hale, nā kaʻa, ka hoʻomaikaʻi ʻana i ka hale, nā lako, nā kaʻaahi, nā moku, aerospace a me nā ʻano ʻē aʻe he nui.Mai ka hiki ʻana mai o ka puʻu palupalu PU i ka makahiki 1950, ʻoi aku ka nui ma hope o ke komo ʻana i ke kenekulia 21, ʻo ka ʻenehana, nā ʻano like ʻole, a me nā huahana huahana ua lele nui.ʻO nā mea koʻikoʻi e pili ana: ʻo ka puʻupuʻu palupalu PU ʻoluʻolu, ʻo ia hoʻi nā huahana polyurethane ʻōmaʻomaʻo;haʻahaʻa VOC waiwai PU pulu palupalu;haʻahaʻa atomization PU pulu palupalu;wai piha PU pulu palupalu;piha MDI moʻo pulu palupalu;ka pale ahi, ka uahi haʻahaʻa, ka huʻa MDI piha;Nā mea hoʻohui hou e like me ka reactive polymer catalysts, stabilizers, flame retardants a me nā antioxidants;polyols me ka haʻahaʻa unsaturation a me ka haʻahaʻa monoalcohol maʻiʻo;ultra-low density PU flexible foam me nā waiwai kino maikaʻi loa;ke alapine resonance haʻahaʻa, Haʻahaʻa-hoʻololi PU palupalu pulu;polycarbonate diol, polyε-caprolactone polyol, polybutadiene diol, polytetrahydrofuran a me nā polyol kūikawā;wai CO2 foaming technology, negative pressure foaming technology, etc. I ka pōkole, ʻo ka puka ʻana mai o nā ʻano ʻano hou a me nā ʻenehana hou ua hoʻoikaika i ka hoʻomohala hou ʻana o ka puʻu palupalu PU.
Kumukānāwai hū
I mea e synthesize i ka puʻupuʻu palupalu PU maikaʻi e kū ana i nā koi, pono e hoʻomaopopo i ke kumu hoʻohālikelike kemika o ka ʻōnaehana foam i mea e koho ai i nā mea waiwai nui a me nā mea kōkua a me nā kaʻina hana.ʻO ka hoʻomohala ʻana o ka ʻoihana polyurethane ʻaʻole ia he hana hoʻohālike, akā ua ʻike ʻia ma o ke ʻano o ka ʻenehana maka a me ke kaʻina hana synthesis e like me nā koi hana o ka huahana hope.Hoʻokomo ka polyurethane foam i nā hoʻololi kemika i ka wā o ke kaʻina hana, a paʻakikī nā mea e pili ana i ka waiwai o ka ʻōpū, ʻaʻole wale i ka hopena kemika o isocyanate, polyether (ester) waiʻona a me ka wai, akā ʻo ka colloid chemistry o ka huʻa.ʻO nā hopena kemika e pili ana i ka hoʻopaneʻe kaulahao, ka huʻa a me ka hoʻopili kea.Hoʻopilikia pū ia i ke ʻano, ka hana a me ke kaumaha molekala o nā mea i komo i ka hopena.ʻO ka hopena maʻamau no ka synthesis o ka polyurethane foam hiki ke hōʻike ʻia e kēia ʻano:
Ka manawa hoʻouna: Sep-06-2022