硼改性酚醛树脂的合成及其复合材料的性能

Studies on Synthesis Technology of Boron Modified Phenolic Resin(BPR) and Properties of CF/BPR Composites

从催化剂用量、反应时间和温度等方面研究了合成工艺条件对硼改性酚醛树脂(BPR)性能的影响,研究了碳纤维/硼改性酚醛树脂(CF/BPR)复合材料性能与碳纤维含量及其表面处理的关系.结果表明:在特定的反应温度、时间和催化剂条件下,可以合成出性能良好的BPR.随着碳纤维含量的增加,CF/BPR复合材料弯曲强度、弯曲模量和冲击强度均逐渐增加;当碳纤维含量达到30%(质量分数)时,CF/BPR复合材料弯曲强度、弯曲模量和冲击强度达到最大值.CF/BPR复合材料弯曲强度和弯曲模量因碳纤维的表面处理而提高,但冲击强度却略有下降.

Effect of catalyst content, reaction time and temperature on synthesis of boron modified phenolic resin was investigated and the relationship between mechanical properties of carbon fiber reinforced boron modified phenolic resin（CF/BPR） composites and carbon fiber（CF） content and surface treatment were studied. The results show that boron modified phenolic resin with different boron content could be synthesized under special technology condition. Flexural strength, flexural modulus and impact strength of CF/BPR composites increase with increasing CF content. Flexural strength, flexural modulus and impact strength of CF/BPR composites reach to maximum when CF content is 30%. Flexural strength and flexural modulus of CF/BPR composites increase when the surface of carbon fiber is treated, but impact strength of CF/BPR composites decreases slightly.