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本文选用废渣制成的粉煤灰纤维棉(FAF)和聚氯乙烯(PVC)树脂作为原料,成功制备了FAF/PVC复合材料,研究了FAF的表面处理及其加入量对复合材料力学性能、热性能和硬度的影响,并用SEM对复合材料的界面进行了表征。实验结果表明,相对于纯PVC树脂而言,复合材料含经KH550处理的FAF40phr时,拉伸强度提高约12%;含经软化剂处理的FAF10phr时,冲击强度提高约110%;含经偶联剂和软化剂联合处理的FAF10phr时,冲击强度提高约70%,拉伸强度提高约11%,维卡软化温度随FAF添加量的增加呈上升趋势。研究结果证明,KH550和软化剂联合使用会对复合材料起到有效的增强增韧效果,因此能提高复合材料中FAF的填充量。制成的环保型FAF/PVC复合材料不仅性能全面高于纯PVC,而且材料成本显著降低,为综合利用废渣FAF开拓了新方向。
In this paper, the FAF / PVC composites were successfully prepared by using fly ash fiber cotton (FAF) and polyvinyl chloride (PVC) resin as raw materials. The effects of the surface treatment of FAF and the addition amount on the mechanical properties, Thermal properties and hardness of the composites. The interface of the composites was characterized by SEM. The experimental results show that the tensile strength increases about 12% with KH550 treated FAF 40phr and the impact strength increases about 110% with FAF10phr treated with softener. Compared with pure PVC resin, The impact strength increased by about 70% and the tensile strength increased by about 11% with the addition of FAF 10phr. The Vicat softening temperature increased with the addition of FAF. The results show that the combination of KH550 and softener can effectively enhance the toughening effect of the composites and therefore increase the filling amount of FAF in the composites. Made of environmentally friendly FAF / PVC composite material not only higher than the overall performance of pure PVC, and significantly reduce the cost of materials for the comprehensive utilization of waste residue FAF opened up a new direction.