Abstract:

The preferential adsorption and encapsulation phenomena in ternary composites were investigated by studying the mechanical properties of the PP/GF/PA66, PP/GF/PET, PP/GB/PA66, PP/GB/PET and PP/PA66/PET composites.It was found that the polymer polarity played an important role in the interface formation during the processing.The polar inorganic fillers or polar polymer could be preferentially encapsulated by the polar polymer in the dipolar polymer matrix during the melted processing.Due to the preferential adsorption and encapsulation, the interface adhesion was improved and the mechanical properties of the ternary composites were also influenced by encapsulation.And better properties could be obtained after encapsulation.Furthermore, the relationship between encapsulation and interface tension was discussed.

Key words:

吸附, 包覆, 极性, 非极性, 热塑性复合材料

摘要：

通过对三相复合材料PP/GF/PA66、PP/GF/PET、PP/GB/PA66、PP/GB/PET以及PP/PA66/PET的力学性能和微观形貌的比较分析，研究了三相复合材料的界面吸附现象。实验结果表明，高分子的极性在多相体系的界面形成过程起着非常重要的作用。在熔融加工时，极性高分子能优先吸附包覆在极性无机填料或极性高分子表面;三相体系中的极性优先吸附包覆作用改善了无机填料和高分子基体之间的界面结合，使材料的力学性能优于不存在优先吸附作用的三相体系的力学性能。此外，通过比较分析复合材料组分之间的界面张力，从界面能的角度解释了多相复合材料中的优先吸附包覆现象。

关键词:

吸附, 包覆, 极性, 非极性, 热塑性复合材料