【摘 要】
：
通过机械搅拌、冷压成型烧结方法,制备了纳米碳酸钙填充改性聚四氟乙烯(PTFE)复合材料,并研究了复合材料的综合物理机械性能。结果表明:未改性的纳米碳酸钙显著提高了复合材
【机 构】
：
西华大学材料科学与工程学院,西华大学材料科学与工程学院,西华大学材料科学与工程学院 四川成都610039,四川成都610039,四川成都610039
论文部分内容阅读
通过机械搅拌、冷压成型烧结方法,制备了纳米碳酸钙填充改性聚四氟乙烯(PTFE)复合材料,并研究了复合材料的综合物理机械性能。结果表明:未改性的纳米碳酸钙显著提高了复合材料的弹性模量、断裂伸长率和冲击强度,但复合材料的拉伸强度有所降低。改性后的纳米碳酸钙效果并不是很理想,主要是表面改性剂高温分解存在的影响。
The mechanical properties and mechanical properties of the composites were investigated by mechanical stirring and cold-pressing sintering. The nano-CaCO3 filled PTFE composites were prepared. The results showed that the unmodified nano-CaCO3 significantly increased the elastic modulus, elongation at break and impact strength of the composites, but the tensile strength of the composites decreased. The modified nano-calcium carbonate effect is not very satisfactory, mainly due to the presence of surface modifier pyrolysis.
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