Preparation of Imide Oligomers via Concurrent Reactive Extrusion

Avakian, Roger W [Inventor]Hu, Ling [Inventor]

关键词: EXTRUDING;    IMIDES;    THIN FILMS;    HIGH POLYMERS;    DIAMINES;    RESIN TRANSFER MOLDING;    POLYMER MATRIX COMPOSITES;    BENZENE;    MELTING;    PATENTS;    HIGH TEMPERATURE;    RATIOS;   

RP-ID  :  US-Patent-9,926,408, US-Patent-Appl-SN-15/024,833

学科分类：复合材料

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Reactive extrusion can be used in a continuous, solvent-less preparation of imide oligomers involving two competing reactions among three ingredients, the first reaction between a dianhydride and a diamine and the second reaction between an endcap and the same diamine. The imide oligomer can form a composite via conventional production methods or via formation of a film from imide oligomer re-melted in an extruder before being impregnated into tape or fabric.