摘要
以PP为基体,采用热压成型方法制备木塑复合材料。通过X射线衍射和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-βPP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,-αPP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/m2,较未添加铝酸酯偶联剂的复合材料提高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。
PP based wood plastic composites （WPC） were prepared by compression molding. The effects of the content of wood flour and coupling agents on the properties of crystalline structure, theological and mechanical properties of WPC were studied using X-ray diffraction and scanning electron microscopy etc. The result showed that the formation of ^-PP crystals was restrained by wood flour. The （040） diffraction of a-PP was enhanced at 10 phr of WF. The tensile strength of WPC samples was increased, while its toughness showed a sharp decrease by adding WF. The dif- fractions of （010）, （040）, and （130） plains of the composites were strengthened by adding 0. 5 phr of aluminate coupling agent. The notched impact strength of the composites with 0. 5 phr aluminate coupling agent was 6. 25 kJ/m2, which was 23.52% higher than that without the coupling agent. Moreover, the processing ability of WPC was also improved by the aluminate coupling agent.
出处
《中国塑料》
CAS
CSCD
北大核心
2010年第6期67-71,共5页
China Plastics
关键词
聚丙烯
木粉
复合材料
铝酸酯偶联剂
结晶性能
流变性能
力学性能
polypropylene
wood flour
composite
aluminate coupling agent
crystallization
rheological behavior
mechanical property
