新型C/C复合材料基体前驱体—COPNA树脂

New matrix precursor for carbon-carbon composites—COPNA resin

以苯甲醛为交联剂,萘为单体,在浓硫酸催化下,反应得到未交联的缩合多核芳香烃(COPNA)树脂。采用红外光谱,差热/热重分析仪等,对COPNA树脂的合成反应及COPNA树脂的热稳定性进行了分析。用合成的COPNA树脂对T300 6 K炭布缠绕的坯体进行浸渍增密制备出了COPNA基炭/炭复合材料制品,在常压浸渍固化炭化的条件下,其残炭率达到53.15%。研究结果表明:优化单体与交联剂的物质的量比及催化剂的用量,残炭率还有上升的空间,显示出COPNA树脂是一种极具前景的新型C/C复合材料基体前驱体。

Uncross-linked condensed polynuclear aromatics（COPNA）resins were prepared using benzaldehyde as cross-Jink agent and naphthalene as monomer with the presence of strong sulfuric acid catalyst. Synthesis reaction and thermostability of COPNA resins were analyzed by DTA/TG, IR spectra, etc. COPNA-B resin impregnation was used to densify performs wraped with T300 6 K carbon-cloth in order to get carbon fiber reinforced COPNA- based carbon-carbon composites. After impregnation, solidification and carbonization in the normal pressure reactor, char yield reached 53.15%. The findings indicate that char yield will be increased by optimizing the molar ratio of monomer and cross-link agent and mass content of catalyst, which expresses COPNA resin is a new kind of promis- ing matrix precursor of carbon-carbon composites.