Synthesis and properties of waterborne polyurethane modified with amino siloxane microemulsion

A waterborne polyurethane emulsion and a kind of waterborne polyurethane modified with aminoethylaminopropyltrimethoxysilane(AEAPS)were prepared.Their properties and their application as fabric coating were studied.The results showed that the modified waterborne polyurethane had good centrifugal stability when the mass ratio of amino silicone oil to polypropylene glycol was 8.18% and there was 0.92% silicon on the surface of films casted from the modified waterborne polyurethane.Its microphase separation,water resistance and thermal stability were better.Furthermore,the fabric coated with the modified waterborne polyurethane had good softness and smoothness.