Heat-setting mechanism of PTFE co-stretching membrane for garment

摘要

Three kinds of PTFE co-stretching membrane for garments were prepared with PTFE and TPU under different heat-setting temperatures. The heat-setting model of co-stretching membrane based on PTFe particles' melting was put forwerd. The effects of heat-setting temperature exerting on membrane morphology, elastic recovery and moisture permeability and so on were clarified with this model. Under 280℃, elastic recovery and water vapor permeability of the membranes is 66% and 9 655 (g/( d ? m2)) respectively, so that the requirements of garment moisture permeable and distortion comfortability can be net.