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本文介绍采用丙烯酸接枝PP(PP-g-AA)和用偶联剂处理云母的方法来制取PP/云母复合材料.所制复合材料的物理机械性能、热性能有显著提高.当云母用量为30%时,AA用量为2%,BPO用量为0.5%的复合材料,其综合性能最好.用硅烷作偶联剂较之钛酸酯作偶联剂效果显著.由本实验所制复合材料的熔体指数为3～4.3g/10min,拉伸强度35.5～38.5MPa,断裂伸长率20%～21%,弯曲强度53.5～61.1MPa.悬臂梁冲击强度47.4J/m.热变形温度133～139℃,其主要技术指标均已达到和超过同类产品水平,可做汽车用塑料材料,生产耐热刚性仪表板等.
In this paper, PP / mica composites were prepared by acrylic acid grafted PP (PP-g-AA) and mica with coupling agent.The physical and mechanical properties and thermal properties of the composites were significantly improved.When the amount of mica Is 30%, the AA dosage of 2%, BPO dosage of 0.5% of the composite material, its best overall performance with silane as a coupling agent than titanate as a coupling agent effect is significant by the experimental system made of composite materials The melt index is 3 ~ 4.3g / 10min, tensile strength of 35.5 ~ 38.5MPa, elongation at break of 20% ~ 21%, bending strength of 53.5 ~ 61.1MPa Izod impact strength of 47.4J / m Heat distortion temperature 133 ~ 139 ℃, the main technical indicators have reached and exceeded the level of similar products, plastic materials can be used for automotive production of heat-resistant rigid dashboard.