玻璃微珠表面处理对LDPE 复合材料拉伸性能的影响

应用Inst ron 材料试验机, 于室温下考察了玻璃微珠含量及其表面处理对填充低密度聚乙烯复合物拉伸性能的影响。结果表明, 复合材料的弹性模量(E_c) 随着微珠体积分数的增加而增大, 屈服强度(R_yR ) 变化不大, 而断裂强度(R_bR )、断裂应变(E_bR ) 和断裂能(E _bR ) 则减小; 在相同的实验条件下, 微珠表面经硅烷偶联剂预处理的填充体系的E c、R_yR 和R_bR 稍高于未作表面预处理的复合材料; 对于E_bR 和E _bR , 两体系之间的差异甚微。 

EFFECTS OF GLASS BEAD SURFACE TREATMENT ON THE TENSILE PROPERTIES OF FILLED LDPE COMPOSITES

The effects of the content and surface treatment of glass beads on the tensile properties of the filled low density polyethylene (LDPE)composites were investigated at room temperature using an Instron materials tester. The results show that the elastic modulus ( Ec) of the composites increases with the addition of the volume fraction of glass beads and the yield strength ( σ yR ) does not vary much. On the contrary, the tensile stress at break ( σ bR ), fracture strain ( ε bR ) and fracture energy ( E bR ) decrease. At the same test conditions the values of E c, σ yR and σ bR of the composite with glass bead surface pretreated with a silane coupling agent are slightly higher than those of the untreated one, and the difference in ε bR and E bR between both the filled systems is very insignificant.