有机硅改性硼酚醛树脂的研制

通过Williamson醚合成、Claisen重排及硅氢化反应得到邻羟基苯丙基硅油(Si-phenol),将其与苯酚混合,采用硼酸酯法合成有机硅改性硼酚醛树脂(SBPF).利用1H NMR和FTIR技术对其结构进行分析,采用热重分析(TGA)、剪切测试、拉伸测试以及冲击测试等手段对其耐热能和力学性能进行表征.考察了Si-phenol的含量对树脂各项性能的影响,并研究其作用机理.结果表明,合成的有机硅改性硼酚醛树脂具有良好的耐热性,适量硅氧烷链段的引入可以改善树脂的黏接性能,提高其力学强度.

Research on Silicone-modified Boric Phenolic Resin

( 2?Hydroxyphenyl ) propyl silicone oil ( Si?phenol ) was obtained via Williamson ether synthesis, Claisen rearrangement, and hydrosilylation, and then was mixed with phenol. The silicone?modified boric phenolic resin( SBPF) was synthesized via borate esterifieation. The structure of SBPF was analyzed by means of 1H NMR and FTIR, and the heat?resistance and mechanical performances of SBPF were characterized by TGA, shearing test, tensile test, and impact test. The effects of Si?phenol content on various performances of SBPF were investigated, and the mechanisms were researched. The result shows that the synthesized resin has good heat?resistance, and the introduction of appropriate proportion siloxane segments could improve its adhe?sive property and enhance its mechanical strength.