Test of PC41’s sweat corrosion resistance and yellowing resistance accelerated aging in the polyurethane strap of smart watch

the test of pc41’s anti-sweat corrosion and anti-yellowing acceleration aging in smart watch polyurethane strap 1. introduction: the “skin” of smart watches – polyurethane strap with the development of technology, smart watches have become an important accessory in modern people’s lives. from health monitoring to communication functions, it is not only a time display tool,…