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

关键词:  硼改性酚醛树脂,合成工艺,碳纤维,力学性能,表面处理

Key words:  boron modified phenolic resin(BPR),synthesis technology,carbon fiber,mechanical property,surface treatment

摘要:

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.

Abstract:

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(diffe)-(rent) 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.