| 摘要 |
<p>Spray polyurea elastomers comprising an (A) component which includes an isocyanate, and a (B) component which includes (1) an amine terminated polyoxyalkylene polyol and (2) a chain extender, can be made resistant to abrasion by the inclusion of a chemically sized filler material. Suitable filler materials are calcium metasilicate, milled glass, flaked glass, mica or glass spheres; which may be chemically sized by treatment with, for example epoxy silanes, amino silanes or titanate or zirconate coupling agents.</p> |
