硅烷偶联剂对ZnO/PA6复合材料力学性能的影响

Effects of coupling agents on the mechanic properties of PA6 composite filled with zinc oxide

以硅烷偶联剂KH550和KH560为改性剂对ZnO粉体进行表面改性,KH550带有氨基团,KH560带有环氧基团,通过HAAKE双螺杆混合机制备ZnO/PA6复合材料。红外光谱证实改性后两种偶联剂均与ZnO表面发生了化学键和;结果表明经偶联剂改性的氧化锌比未改性的氧化锌能更好的提高PA6的拉伸强度,而且在ZnO的添加量为2%～3%时对PA6力学性能的改善达到一个最佳效果。

ZnO/PA6 composite is pepared by mixing organic modified ZnO with PA6 in HAAKE mixer, mechanic properties of ZnO/PA6 are studied in the experiment.Compared with untreated ZnO,the treated ZnO can have a more significant improvement on the strength of the PA6 composites.The content of the ZnO has a significant influence on the ZnO/PA6 composite,The tensile strength can reach an optimal extent when the content of modified ZnO is between 2% and 3%.