聚氯乙烯/芳纶建筑管材的制备及阻燃性能研究  

Preparation and Flame Retardancy of PVC/Aramide Fiber Building Pipes

作　　者：周琳霞 祝睿娟 宋兴海 ZHOU Lin-xia;ZHU Rui-juan;SONG Xing-hai(Zhengzhou Business Technicians Institute,Zhengzhou 450121,China;Hebei University of Water Resources and Electric Engineering,Cangzhou 061001,China)

机构地区：[1]郑州商业技师学院,河南郑州450121 [2]河北水利电力学院,河北沧州061001

出　　处：《塑料科技》2021年第9期47-50,共4页Plastics Science and Technology

基　　金：河北省教育厅2019年青年基金项目(QN2019235)。

摘　　要：聚对苯二甲酰对苯二胺(PPTA)作为芳纶纤维,与聚氯乙烯(PVC)共混,制备PVC/PPTA复合材料,并对复合材料的热稳定性、力学性能、阻燃性能以及耐久性进行研究。结果表明:当PPTA含量为4.5 g,PVC/PPTA的热稳定性最好,并且拉伸强度、断裂伸长率以及弯曲强度均达到最大值,分别为68.9 MPa、254%以及43.6 MPa。PPTA的加入能够提高复合材料的阻燃性能,PVC/PPTA-3的LOI值达到43.6%,与PVC相比,热释放峰值降低30.6%。PVC/PPTA-3经过高温老化,耐久性能下降程度较小,说明其可以有效用于阻燃建筑管材。PVC/PPTA composites were prepared by poly-p-phenylene terephthalamide(PPTA)as aramid fiber blending with polyvinyl chloride(PVC).The thermal stability,mechanical properties,flame retardancy and durability of the composites were studied.The results show that when the PPTA content is 4.5 g,PVC/PPTA has the best thermal stability,and the tensile strength,elongation at break and bending strength which reach the maximum values of 68.9 MPa,254% and 43.6 MPa,respectively.The addition of PPTA can improve the flame retardancy of the composites.The LOI value of PVC/PPTA-3 reaches 43.6%,and the peak heat release rate decreases by 30.6% compared with PVC.After high temperature aging,the durability of PVC/PPTA-3 decreases slightly indicating that it can be effectively used for flame retardant building pipes.

关 键 词：芳纶纤维 聚氯乙烯 建筑管材 阻燃性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]