Kodi pali kusiyana kotani pakati pa mawilo a polyurethane ndi mawilo a nayiloni?

1. Zida za mawilo a polyurethane ndizofewa, zotsutsana bwino ndi phokoso komanso phokoso lochepa;pomwe mawilo a nayiloni amakhala olimba, ndipo kulimba kwawo kumasiyana pang'ono ndi polyurethane.Mwachitsanzo, zovala zopangidwa ndi nayiloni sizimva kuvala.

2. Zida za mawilo a polyurethane ndi mawilo a nayiloni ndizosiyana.Ma polyurethanes amapangidwa polima kuchokera ku isocyanates (monomers) ndi ma hydroxyl compounds.Chifukwa cha gulu lamphamvu la polar carbamate, losasungunuka m'magulu osakhala a polar, limakhala ndi kukana mafuta abwino, kulimba, kukana kuvala, kukana kukalamba komanso kumamatira.Zida zoyenera kutentha kwakukulu (-50 mpaka 150 ° C) zikhoza kukonzedwa kuchokera ku zipangizo zosiyana siyana, kuphatikizapo elastomers, thermoplastic resins ndi thermosetting resins.Si kugonjetsedwa ndi hydrolysis pa kutentha, kapena zamchere sing'anga.Nayiloni ndi liwu lodziwika bwino la ma polima okhala ndi magulu a amide mugawo lobwereza la unyolo waukulu wa macromolecular.Polyamides akhoza kukonzedwa ndi mphete-kutsegula polymerization lactams, kapena polycondensation wa diamines ndi dibasic zidulo.