PP基木塑复合材料的制备及性能研究

以PP为基体，采用热压成型方法制备木塑复合材料。通过X-ray衍射，SEM研究了木粉含量、偶联剂改性对复合材料结晶、流变、力学性能的影响。结果表明，木粉的加入会抑制β-PP晶型的生成，10份木粉可能有助于（040）晶面的生长。随着木粉含量的增加，复合材料的拉伸强度有所提高，而冲击性能明显降低。加入0.5份铝酸酯偶联剂时，α-PP的特征峰（130），以及主要晶面（010）、（040）的衍射强度均有所增加，缺口冲击强度为6.25kJ/㎡，较WF30提高23.52%，SEM结果也显示出同样的趋势；同时，材料的加工性能也有所改善。

Preparation and Mechanical Properties of PP based WPC

PP based wood plastic composite samples were prepared by compression molding. The effects of the content of wood flour and compatibilizer modification on the properties of crystal, rheology and mechanics of WPC were studied using some analysis instruments, such as X-ray diffraction, scanning electron microscopy etc. The result showed that β-PP crystal was restrained by wood flour according, The growth of (040) surface of α-PP may be enhanced at 10 phr of WF. The tensile strength of WPC samples were increased, while its toughness showed a shade decrease by adding the content of WF. The growth of (010), (040), and (130) surface of composites that adding 0.5 phr of aluminic ester coupling agent to the WPC with 30 phr WF is better than that without aluminic ester coupling agent. The notched impact strength of composites with 0.5 phr aluminic ester coupling agent is 6.25 kJ/㎡, 23.52 % higher than that without aluminic ester coupling agent. The results of SEM showed a similar tending. Moreover, the molding properties of WPC were also improved by the AE coupling agent.