摘要
本文以添加硼酸的方法,通过控制体系的pH值,合成可发泡的硼改性酚醛树脂,并制备出硼改性酚醛泡沫。测试表明,该材料具有良好的耐高温性能,其热分解温度为450℃,800℃热失重为60%,最高使用温度为200℃。同时探讨体系pH值对硼改性酚醛树脂可发性和稳定性的影响,分析硼改性提高酚醛泡沫耐高温性能的原因。
Foamed boron-denatured phenolic resin has been synthesized by adding boron and controlling the pH of the system. The characterization data indicate that this material exhibits excellent heat resistance. Its temperature of heat decomposition is 450℃, mass loss is 60% at 800℃, and the highest service temperature is 200℃. Meanwhile, the influence of the pH of the system on foamability and stability of boron-denatured phenolic resin is studied. The mechanism for the improvement of heat resistance of phenolic foam by boron denaturation is also analysed.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2007年第6期26-28,共3页
Fiber Reinforced Plastics/Composites
基金
上海市教委科研项目(06OZ012)
关键词
酚醛树脂
酚醛泡沫
改性
耐高温
phenolic resin
phenolic foam
denaturation
heat resistance
