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将废环氧树脂与聚氯乙烯(PVC)共混,采用模压工艺制备复合材料。通过正交实验,讨论废环氧树脂添加量、硅烷偶联剂KH-550用量、模压时间3个因素对复合材料力学性能的影响大小,得到其优化条件。在正交实验所得优化条件基础之上,研究单因素对复合材料的影响,最终确定实验的最优方案。结果表明:当模压时间10 min,废环氧树脂添加量70%,硅烷偶联剂用量2份时,复合材料的力学性能达到最优,冲击强度为10.49 kJ/m2,拉伸强度为62.24 MPa。
The waste epoxy resin and polyvinyl chloride (PVC) blending, the use of molding process for the preparation of composite materials. Through orthogonal experiment, the influence of the amount of waste epoxy resin, the amount of silane coupling agent KH-550 and the molding time on the mechanical properties of composites were discussed, and the optimal conditions were obtained. Based on the optimized conditions of orthogonal experiment, the influence of single factor on the composite material was studied, and the optimal scheme of the experiment was finally determined. The results show that when the molding time is 10 min, the content of waste epoxy resin is 70% and the amount of silane coupling agent is 2 parts, the mechanical properties of the composites are optimized. The impact strength is 10.49 kJ / m2 and the tensile strength is 62.24 MPa .