炔基酚醛树脂防热复合材料的研究

Research on Phenolic Resin Containing Ethynyl Groups Heat-Resistant Composites

以碱为催化剂,通过间乙炔基苯基重氮硫酸盐和酚醛树脂间的偶合反应,制备出间乙炔基苯偶氮酚醛树脂简称炔基酚醛树脂(EPAN),采用该树脂制备了硅基/炔基酚醛树脂复合材料。研究结果表明:该树脂浸胶工艺性好,固化反应活性高,制备出的复合材料高温力学性能保持率好、残碳率高。

Ethynyl phenyl azo novolac resin （EPAN） can be synthesized by coupling reaction between 3-ethynyl phenyl diazonium sulfate and novolac resin in presence of base as catalyst. In this report, the silicon based fiber rein- forced EPAN composites were prepared. The result show that the resin has favorable permeability and high cure activi- ty during the process of making composites, besides, the silicon based fiber reinforced EPAN composites possesses good mechanical retainability and high char yield value at high temperature. Therefore, the silicon based fiber reinforced EPAN composites can be applied far and wide as heat-resistant structural materials and ablative thermal protection materials.