Chifukwa chiyani musankhe polyurethane kwa opangira mafakitale ndipo ubwino wake ndi wotani?

Polyurethane (PU), dzina lonse la polyurethane, ndi polima pawiri, yomwe idapangidwa mu 1937 ndi Otto Bayer ndi ena. Polyurethane ili ndi magulu awiri akuluakulu: polyester ndi polyether. Zitha kupangidwa kukhala mapulasitiki a polyurethane (makamaka thovu), ulusi wa polyurethane (wotchedwa spandex ku China), mphira wa polyurethane ndi elastomers. Polyurethane ndi zinthu za polima zomwe ndizoyenera kugwiritsidwa ntchito ngati chivundikiro cha magudumu popanga ma casters a mafakitale.

Ubwino waukulu wa polyurethane casters makamaka motere:

Choyamba, magwiridwe antchito amtundu wosinthika

Zizindikiro zingapo zogwirira ntchito zakuthupi ndi zamakina zitha kusinthidwa posankha zida ndi ma fomula, mkati mwazosintha zingapo zosinthika, kuti zikwaniritse zofunikira zapadera za wogwiritsa ntchito pazogulitsa.

Chachiwiri, kukana kwambiri abrasion
Pamaso pa madzi, mafuta ndi zina zonyowetsa media zogwirira ntchito, ma polyurethane casters amavala kukana nthawi zambiri kangapo kuchulukitsa kangapo ndi zida za rabara wamba. Zida zachitsulo monga zitsulo ndi zina zolimba, koma osati kuti zimavala zosagwira!

Chachitatu, processing njira, lonse applicability
Ma polyurethane elastomers amatha kupangidwa ndi mphira wogwiritsidwa ntchito nthawi zonse popanga pulasitiki, kusakaniza ndi vulcanizing (MPU); amathanso kupangidwa kukhala mphira wamadzimadzi, kuthira ndi kuumba kapena kupopera mbewu, kusindikiza ndi kuumba centrifugal (CPU); Zitha kupangidwanso kukhala zida za granular ndi mapulasitiki wamba ndi jekeseni, extrusion, calendering, kuwombera nkhonya ndi njira zina (CPU). Kuwumbidwa kapena jekeseni kuumbidwa mbali, mkati mwa kuuma osiyanasiyana osiyanasiyana, angathenso kudula, akupera, kubowola ndi processing zina makina.

Chachinayi, kukana kwamafuta, kukana kwa ozoni, kukana kukalamba, kukana kwa radiation, kukana kutentha pang'ono, kufalitsa mawu abwino, mphamvu zomatira zolimba, kuyanjana kwabwino kwambiri komanso kuyanjana kwamagazi. Ubwinowu ndi chifukwa chake ma polyurethane elastomers amagwiritsidwa ntchito kwambiri munkhondo, zakuthambo, zoyimbira, biology ndi zina.