Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly (imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor
申请人:United States of America as represented by the Administrator of NASA
公开号:US10626098B2
公开(公告)日:2020-04-21
Copoly(imide oxetane) materials are disclosed that can exhibit a low surface energy while possessing the mechanical, thermal, chemical and optical properties associated with polyimides. The copoly(imide oxetane)s are prepared using a minor amount of fluorinated oxetane-derived oligomer with sufficient fluorine-containing segments of the copoly(imide oxetane)s migrate to the exterior surface of the polymeric material to yield low surface energies. Thus the coatings and articles of manufacture made with the copoly(imide oxetane)s of this invention are characterized as having an anisotropic fluorine composition. The low surface energies can be achieved with very low content of fluorinated oxetane-derived oligomer. The copolymers of this invention can enhance the viability of polyimides for many applications and may be acceptable where homopolyimide materials have been unacceptable.
本发明公开了共聚(亚胺氧杂环丁烷)材料,这种材料表面能较低,同时具有与聚酰亚胺相关的机械、热、化学和光学特性。共聚(酰亚胺氧杂环丁烷)材料的制备使用了少量氟化氧杂环丁烷衍生的低聚物,共聚(酰亚胺氧杂环丁烷)材料中足够的含氟段迁移到聚合物材料的外表面,从而产生低表面能。因此,使用本发明的共聚(亚胺氧杂环丁烷)制造的涂层和制品具有各向异性氟组成的特点。低表面能可以通过极低的含氟氧杂环丁烷衍生低聚物含量来实现。本发明的共聚物可以提高聚酰亚胺在许多应用中的可行性,在均聚酰亚胺材料无法接受的情况下,本发明的共聚物也是可以接受的。