Polyacetylinic oligomers suitable for high-temperature polymer-matrix composites are provided. The polyacetylinic oligomers have the formula:
D-A-D
wherein
D is an endcap including at least one crosslinking functionality; and
A is backbone selected from the group consisting of imidesulfone; ether; ethersulfone; amide; imide; ester; estersulfone; etherimide; amideimide; oxazole; oxazole sulfone; thiazole; thiazole sulfone; imidazole; and imidazole sulfone. At least one ethynyl functional group, however, is incorporated into the backbone such that crosslinking is not only realized at the endcaps but also at the ethynyl groups within the backbone of the oligomer itself.
提供适用于高温聚合物基复合材料的聚
乙炔寡聚体。该聚
乙炔寡聚体具有以下公式:D-A-D,其中D是至少包括一个交联功能的末端盖;而A是从亚砜酰胺、醚、醚砜、酰胺、亚酰胺、酯、酯砜、醚亚酰胺、酰胺亚酰胺、
噁唑、
噁唑砜、
噻唑、
噻唑砜、
咪唑和
咪唑砜组成的主链。但是,至少一个
乙炔官能团被并入到主链中,使得交联不仅在末端盖处实现,而且在寡聚体本身的主链中的
乙炔基团处也能实现交联。