sPS/PA66/g-sPS/纳米Al2O3粒子复合材料性能
来源期刊：中南大学学报(自然科学版)2004年第4期
论文作者：曹有名 沈志刚 林尚安
文章页码：543 - 547
关键词：间规聚苯乙烯;纳米氧化铝粒子;复合材料
Key words：syndiotactic polystyrene; nano- Al2O3 particles; composite
摘 要：以间规聚苯乙烯sPS/聚酰胺66(PA66)/接枝间规聚苯乙烯g-sPS为基体,在熔融状态下与纳米氧化铝粒子复合,制备出sPS/PA66/g-sPS/ Al2O3纳米粒子复合材料;测量了纳米复合材料的力学性能和热性能,并用扫描电镜观察了材料的显微组织结构。研究结果表明:纳米Al2O3粒子对于sPS/PA66/g-sPS合金具有明显的增韧增强作用;随着纳米Al2O3粒子质量的增加,玻璃化温度几乎呈线性升高;当纳米氧化铝粒子质量为4 g时,复合材料冲击强度最大;当纳米氧化铝粒子质量为6 g时,复合材料的拉伸强度最大;纳米复合材料的冲击强度和拉伸强度均出现先升高后下降的变化趋势。
Abstract: The nanocomposite composed of syndiotactic polystyrene (sPs)/ polyamide-66 (PA66)/graft syndiotactic polystyrene(g-sPS)/ nano- Al2O3 particles was prepared. The tensile strength and impact strength of composites were measured. The thermal properties and microstructures of composites were investigated by differential scanning calorimetry (DSC) and scanning electron microscopy(SEM), respectively. The results show that the sPS/ PA66/ g-sPS alloy is toughened and reinforced by adding nano- Al2O3 particles. With the increasing of nano- Al2O3 particles, the glass transition temperature almost increases linearly, and the impact and tensile strength of composites increases firstly and then decreases. The nanocomposite with 4 g nano- Al2O3 particles has the maximum impactstrength and that with 6 g nano- Al2O3 particles has the maximum tensile strength.
