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研究了ZnO体积分数和界面对复合材料力学性能和热性能的影响规律,为导热复合材料制备过程中基体与填料配比的选择、合适的填料表面处理方法以及实现力学性能与热性能的兼顾提供了指导依据。研究结果表明:当φ(ZnO)<20%时,填料的加入有利于全面提高复合材料的力学性能和热性能;NDZ-132偶联剂的加入有助于改善聚丙烯/ZnO复合材料的热性能与力学性能,但是界面强度过大会使材料呈现脆性,冲击性能略有下降。加入大分子偶联剂相当于在填料表面增加一个柔性层,有利于提高材料的冲击性能,但是不利于热能在材料内部传递。随着NDZ-132偶联剂质量分数的增加,复合材料的导热性能、拉伸及弯曲性能都呈现出先增加后降低的趋势;当偶联剂质量分数约为1.5%时,复合材料性能达到最佳值。
The effects of ZnO volume fraction and interface on the mechanical properties and thermal properties of the composites were studied. The results show that the choice of matrix and filler ratio during the preparation of the thermal conductive composites, the proper surface treatment of the filler, and the combination of mechanical properties and thermal properties Guidance basis. The results show that the addition of filler can improve the mechanical properties and thermal properties of the composites at φ (ZnO) <20%. The addition of NDZ-132 coupling agent helps to improve the thermal properties of PP / ZnO composites Performance and mechanical properties, but the interface strength is too large to make the material brittle, the impact of a slight decrease. The addition of a macromolecular coupling agent is equivalent to adding a flexible layer on the surface of the filler, which is favorable for improving the impact performance of the material, but not conducive to the transfer of heat energy inside the material. With the increase of the mass fraction of NDZ-132 coupling agent, the thermal conductivity, tensile and flexural properties of the composites tended to increase at first and then decrease with the increase of the mass fraction of NDZ-132. When the mass fraction of the coupling agent was about 1.5% Good value.