What is the temperature of the waterborne polyurethane […]
What is the temperature of the waterborne polyurethane resin?
Resin temperature does not exceed 200 degrees, mainly to see the effect after the paint. But also add the other filler!
Heat-resistant temperature test method is not the same, the results are different. There are ways and processes used, there is a great relationship. If it is to do embossing, due to contact with high temperature short time, water-based polyurethane can withstand 170-180 ℃. But if the high temperature anti-adhesion, 70-80 ℃ even if the high temperature, because there is pressure, time lasted for several hours. Typically by testing the softening point (the intuitive temperature at which the aqueous polyurethane film begins to soften), typically below 170 ° C. One-component water-based polyurethane in the tens to 160 ℃ or so. By adding a curing agent or a crosslinking agent, the heat resistance temperature can be increased.