摘要
以废旧PP、锯末木粉为原料,采用双螺杆挤出机造粒生产环保型塑木复合材料。研究了木粉、相容剂(PP-g-MAH)对复合材料性能的影响,探讨了塑木型材的挤出成型工艺。结果表明,PP-g-MAH可以增加木粉与PP的界面结合,提高复合材料的性能,合适的用量是6~9份(质量份数,下同);增加木粉含量(低于100份)可以提高复合材料的拉伸弹性模量、弯曲性能和热变形温度,但韧性和硬度呈降低趋势,木粉的理想用量是70~100份左右。塑木型材的挤出成型温度过高容易造成质量缺陷,须严格控制。
Recycled polypropylene (PP) and wood powder were employed to prepare composites via twin-screw extrusion. Effect of the content of wood powder and PP-g-MAH compatibilizer on the properties of composite was studied, the technology of extrusion was discussed. PP-g-MAH improved the affinity between wood powder and PP, so that can improve the properties of the composite, its suitable content was 6- 9 phr. The tensile modulus, flexural strength and heat distortion temperature of the composite increased with increasing content of wood powder (typically 70-100 phr), however, the impact strength decreased. The extrusion temperature of the composite should be strictly controlled because quality flaws would be caused as temperature was too high.
出处
《中国塑料》
CAS
CSCD
北大核心
2006年第8期87-92,共6页
China Plastics
基金
佛山市科委产学研合作项目(200406)
关键词
挤出成型
塑木复合材料
废旧聚丙烯
木粉
extrusion
wood-plastics composite
recycled polypropylene
wood powder