1. He palupalu nā mea o nā huila polyurethane, me ke kū'ē kū'ē maikaʻi a me ka leo haʻahaʻa;ʻoiai ʻoi aku ka paʻakikī o nā huila nylon, a ʻokoʻa iki ko lākou pale ʻana mai ka polyurethane.ʻO kahi laʻana, nā lole i hana ʻia me ka nylon he mea pale ʻole.
2. Heʻokoʻa nā mea o nā huila polyurethane a me nā huila nylon.Hoʻopili ʻia nā polyurethanes mai nā isocyanates (monomers) a me nā pūhui hydroxyl.Ma muli o ka pūʻulu carbamate polar ikaika, hiki ʻole ke hoʻoheheʻe ʻia i nā hui non-polar, maikaʻi ke kūpaʻa ʻaila, ka paʻakikī, ke kūpaʻa ʻana, ke kūpaʻa ʻelemakule a me ka adhesion.Hiki ke hoʻomākaukau ʻia nā mea kūpono no kahi ākea ākea (-50 a 150 ° C) mai nā ʻano mea maka, me nā elastomers, nā resins thermoplastic a me nā resins thermosetting.ʻAʻole kūʻē ia i ka hydrolysis i ka wela kiʻekiʻe, ʻaʻole hoʻi i ka medium alkaline.ʻO ka Nylon kahi huaʻōlelo maʻamau no nā polymers i loaʻa nā hui amide i ka ʻāpana hou o ke kaulahao nui macromolecular.Hiki ke hoʻomākaukau ʻia nā polyamides e ka polymerization o ka lactams, a i ʻole polycondensation o nā diamines a me nā waikawa dibasic.
Ka manawa hoʻouna: Dec-23-2022