原位聚合法制备钼酚醛树脂纳米复合材料的研究

Study on Preparation of Molybdenum-modified Phenolic Resin Nano-scale Composite by In-situ Polymerization

采用原位聚合法 ,用表面处理过的二氧化硅 (SiO2 )纳米粒子对钼酚醛树脂进行填充改性 ,制备了钼酚醛树脂 /SiO2 纳米复合材料 ,研究了SiO2 纳米粒子填充改性对复合材料耐热性和力学性能的影响。实验结果表明 ,SiO2质量分数为 2 %时 ,材料的耐热性和冲击强度达到最大值 ,分别为 10 5℃和 4 3kJ/m2 ;SiO2 质量分数为 4%时 ,材料的拉伸模量和拉伸强度达到最大值 ,分别为 12 88MPa和 3 0 3MPa。

The nano-scale composites of molybdenum-modified phenolic resin/ SiO_2,in which molybdenum-modified phenolic resin was filled with surface treated nano-scale SiO_2,were prepared by in-situ polymerization. The effect of SiO_2 nano-scale particles on the heat resistance and mechanical properties of the nano-scale composites was studied. The results showed that the heat resistance and impact strength of the nano-scale composites were the maximum when the mass fractrion of SiO_2 was 2%,and the tensile modulus and tensile strength of the nano-scale composites were the maximum,being 1 288 MPa and 30.3 MPa when the mass fraction of SiO_2 was 4%.