废渣粉煤灰纤维棉增强PVC复合材料

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。

FLY ASH FIBER/PVC COMPOSITES

FAF(fly ash fiber)/PVC composites are prepared by the mechanical mixing and hot compression technique.The effect of different modifiers and FAF content on the mechanical and thermal properties and Rockwell hardness is examined.The interface of FAF/PVC is analyzed and tested by SEM.Compared to PVC material,the tests of mechanical properties indicate when FAF treated with KH550,the tensile strength increases by 12% at 40phr FAF content,when FAF treated with intenerate agent,the impact strength increases by 110% at FAF content of 10phr,when the FAF treated with KH550 and intenerate agent,the impact strength increases by 70% and tensile strength increases by 11% at 10 phr FAF content,VIKA softening point is going up with the content of FAF increasing.The results show that the coupling agent and intenerate agent can improve the intensity and toughness of the composites.FAF/PVC can not only improve the properties of PVC,but also decrease the cost.