Preparation and properties test of two-component waterborne polyurethane fabric coating
Three kinds of waterborne polyurethane( WPU) with different hard-segment content and hydrophilic group content were prepared.By mixing water-dispersible polyisocyanate with WPU at four weight ratios, the two-component WPU fabric coating was obtained.The influences on the fabric coating’s performance of hard-segment content and hydrophilic group content, as well as the weight ratios of WPU to water-dispersible polyisocyanate, were explored.It was experimentally proved that the fabric coating exhibited high air permeability and good waterproof feature.The hard-segment content and hydrophilic group content of WPU affected the performance of fabric coating.The resistance to hydrostatic water pressure of the coated fabrics increased with the increase of the appropriate dosage of water-dispersible polyisocyanate, but decreased with excessive dosage.
waterborne polyurethanewater dispersible polyisocyanatehard-segment contenthydrophilic group contentweight ratiocoated fabricproperty
NETL
NSTL
万方数据
维普
