摘要
分别用废印刷电路板(PCB)非金属粉、磨碎玻璃纤维作为增强材料,采用熔融共混方法制备了聚丙烯(PP)基复合材料,并通过其力学性能试验和缺口冲击断面、废PCB非金属粉、磨碎玻璃纤维的形貌观察,分析研究了两种增强材料及表面改性对复合材料力学性能的影响。实验结果表明:废PCB非金属粉/PP复合材料力学性能得到了明显提高,其中拉伸强度、拉伸模量、弯曲强度和弯曲模量最大增幅分别为28%、41%、86%和133%;废PCB非金属粉与磨碎玻璃纤维都能作为PP增强填料,但其韧性降低;表面改性对废PCB非金属粉/PP复合材料力学性能的影响不大,但是对磨碎玻璃纤维/PP复合材料力学性能的影响大;废PCB非金属粉/PP复合材料综合力学性能高于磨碎玻璃纤维/PP复合材料,可代替磨碎玻璃纤维作为PP基复合材料的增强填料,不仅可以减少环境污染,实现资源再利用,而且大大降低复合材料成本。
Polypropylene （PP） matrix composites, reinforced with nonmetals recycled from waste printed circuit boards and milled glass fibers, respectively, were prepared by the melt blending method. The effects of the two reinforcing materials and surface modification on the strengthening of PP matrix were investigated based on the results of mechanical properties and impact fracture surface morphologies of the composites, and on the surface morphologies of the two reinforcing materials. The results show that both strength and rigidity of the composites can be successfully reinforced by filling the two materials. The maximum increment of tensile strength, tensile modulus, flexural strength and flexural modulus of the nonmetals/PP composites is 28%, 41%, 86% and 133%, respectively, but the toughness decreases. The surface modification of nonmetals has little effect on the mechanical properties of the composites, while the surface modification of the milled glass fibers has a great effect. The nonmetals recycled are more effective in improving the mechanical properties of the composites than the milled glass fibers, and can replace milled glass fibers as reinforcing fillers in the PP composites, which provides a promising way for resolving the environmental pollutions, recycling resources and reducing the composite materials cost.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2009年第2期59-66,共8页
Acta Materiae Compositae Sinica
基金
国家自然科学基金资助项目(50774003)
中国博士后科学基金资助项目(20070420286)
北京市教育委员会共建项目建设计划资助项目
关键词
废印刷电路板
非金属粉
磨碎玻璃纤维
增强
聚丙烯
waste printed circuit boards
nonmetal materials
milled glass fibers
strengthening
polypropylene
