表面改性剂和硅油对HDPE/Al(OH)3力学性能的影响

摘要

The influence of surface modifiers and silicone oil on the mechanical properties of HDPE/Al(OH)a composite was studied. The presence of silicone oil and special modifiers can greatly increase the notched impact strength and elongation at break of the composite. The influence of Al(OH)3 surface modification on the dispersion of silicone oil was studied by scanning electric microscope (SEM) and differential scanning calorimetry (DSC). Two types of dispersion of silicone oil were observed: silicone oil encapsulating around the filler particles and silicone oil dispersing in HDPE with filler particles separately.%探讨了各种表面改性剂和硅油对高填充HDPE/Al(OH)3复合材料力学性能的影响。研究表明，使用经特殊表面改性剂处理的Al(OH)3作填料并加入硅油时，可以大幅度提高HDPE/Al(OH)3复合材料的缺口冲击强度和断裂伸长率。利用扫描电镜和差示扫描量热仪研究了Al(OH)3的表面改性对硅油分布的影响，观察到硅油的两种分布类型：包覆Al(OH)3粒子和以液滴形式与Al(OH)3粒子单独分散于HDPE中。并将硅油的分布状况与材料的力学性能作了对比分析。