论文部分内容阅读
研制了马来酸酯接枝聚丙烯相容剂，并将其用于聚苯乙烯／聚丙烯的共混改性；通过力学性能测试、透射电镜分析、差示扫描量热分析等方法研究了相容剂对ＰＳ／ＰＰ合金的混容形态和力学性能的影响。结果表明：相容剂的加入，使ＰＳ／ＰＰ由不相容的独立聚集的两相变为相畴很小的细分散相，共混高分子的链段运动也表现为趋于均相结构的运动方式。加入相容剂后共混材料的冲击强度有明显提高，拉伸强度也有所上升。相容剂的含量对性能也有较大影响，相容剂用量为８％时，力学性能最好，从ＤＳＣ测试中可以看到此时共混物趋向均相体系；继续增大相容剂用量，合金的力学性能反而下降。
The compatibilizer of maleic anhydride grafted polypropylene was developed and used to modify polystyrene / polypropylene blend. The mechanical properties, transmission electron microscopy and differential scanning calorimetry Effect of compatibilizers on compatibility morphology and mechanical properties of PS / PP alloys. The results show that the addition of compatibilizing agent can change PS / PP from incompatible two independent aggregates into fine dispersed phase with small domain phase. The segment movement of blend polymer also appears to be homogeneous The way of exercise. After adding compatibilizer, the impact strength of blends has been significantly improved, and the tensile strength also increased. The content of compatibilizer also has a greater impact on the performance, the compatibilizer dosage of 8%, the best mechanical properties, from the DSC test can be seen at this time blends tend to homogeneous system; continue to increase compatibilizer dosage , The mechanical properties of the alloy but decreased.