Mapangidwe a magwiridwe antchito a polyurethane / galasi

Pambuyo pazaka zingapo zotukuka, polyurethane akukula otalika adayamba kujambulidwa . Pamalo mwake, zinthu zitha kupangika pang'ono komanso zopepuka {{2}
Mwachitsanzo, wowonda I - mtengo womwe ungapangidwe ndi ulusi wocheperako wokhalitsa, ndikuchepetsa makulidwe a i-back kuchokera pa 3 {mm Kuphatikiza apo, chifukwa mankhwala owonjezera a Polyirethane samakhala opanda phokoso, amatha kusonkhanitsidwa m'njira yachilendo popanda kuwonongeka komanso kuphwanya.
Makamaka, kugwiritsa ntchito ma polurethane kukoka kochokera kowonekera komwe kumakhala ndi zabwino zotsatirazi: {1) Phazi fiber adamva kuti amachepetsa mtengo wa zopangira ndi ndalama zomwe zimapangidwanso mosavuta, ndipo zonyansa zimatha kuwongolera zomwe zili mu polyirethane zowonjezera-zopitilira 60% . Zolinga zosakwanira polyester imayendera zitsulo ndi aluminium pomanga, malo ogulitsa ndi ochulukirapo {{19} { ogwiritsa ntchito. (4) kuwonjezera pa zomwe zili pamwambazi ndi zabwino zokuwuka, zomwe zingakhale zofunikira kwambiri pamsonkhano wa polyirethane, Tembenukirani Kutha kwa sekondale, kukana kutentha kwa madigiri 240. styrene, malo achitetezo a {{30}