玻璃纤维增强聚丙烯(GF/PP)复合材料和黄麻纤维增强聚丙烯(JF/PP)复合材料在汽车内饰材料中应用较为广泛。采用热重-差热分析仪分别研究氮气气氛中不同升温速率下两种复合材料的热分解特性,结果表明,GF/PP复合材料的热分解过程为一个阶段,JF/PP复合材料热分解过程为三个阶段;随着升温速率的提高,两种复合材料的初始分解温度、分解终止温度和最大热失重速率温度都出现不同程度向高温方向移动的趋势。使用Flynn-Wall-Ozawa(FWO)法和Friedman法进行热解动力学分析,发现GF/PP复合材料的平均表观活化能均低于JF/PP复合材料的平均表观活化能,JF/PP复合材料的热稳定性更好。
Glass fiber reinforced polypropylene (GF/PP) composite and jute fiber reinforced polypropylene (JF/PP) composite are widely used in automotive interior materials.The thermal decomposition characteristics of two kinds of composites under different heating rates in nitrogen atmosphere were studied by the differential thermal-thermogravimetric analyzer.The results shown that the pyrolysis process of GF/PP composite was only one stage,but that of JF/PP composite was divided into three stages.With increase of the heating rate,the initial decomposition temperature,the terminal decomposition temperature and the maximum mass lost rate's temperature of the composites all move towards to high temperature to different degree.The pyrolysis kinetics were analyzed by the Flynn-Wall-Ozawa (FWO) method and the Friedman method,the average apparent activation energy of GF/PP composite was lower than that of JF/PP composite consequently,so the thermal stability of JF/PP composite was relatively better.
[1] 骆传龙,倪爱清,王继辉,等.玻璃纤维增强聚丙烯和环氧复合材料低速冲击损伤对比研究[J].玻璃钢/复合材料,2019(10):46-50.
[2] Ahmad F,Choi H S,Park M K.A review:natural fiber composites selection in view of mechanical,light weight,and economic properties[J].Macromolecular Materials and Engineering,2015,300(1):10-24.
[3] 彭书逸.黄麻纤维/聚丙烯车用复合材料成型工艺及其性能研究[D].长沙:湖南大学,2018.
[4] 刘胜凯.汉麻纤维增强聚丙烯复合材料VOC释放及性能研究[D].天津:天津工业大学,2016.
[5] 刘丽妍,王瑞.麻纤维复合材料及其应用[J].产业用纺织品,2004,22(2):37-40.
[6] 汤栋,赵玉萍,赵明.黄麻纤维/环氧树脂复合材料的力学性能[J].大连工业大学学报,2011,30(6):461-464.
[7] 梅皓然,谈政,盛杰.汽车内饰件用麻纤维板与玻纤板性能的比较[J].汽车工艺与材料,2015(7):56-59.
[8] 李恺丹,许家友,刘杰.MCA-MMT的制备及其对玻璃纤维增强聚丙烯复合材料阻燃性能的影响[J].复合材料学报,2015,32(3):712-720.
[9] Zhao C S,Huang F L,Xiong W C,et al.A novel halogen-free flame retardant for glass-fiber-reinforced poly(ethylene terephthalate)[J].Polymer Degradation and Stability,2008,93:1188-1193.
[10] 骆传龙,倪爱清,王继辉,等.玻璃纤维增强聚丙烯和环氧复合材料低速冲击损伤对比研究[J].玻璃钢/复合材料,2019(10):46-50.
[11] 董卫国.玻璃纤维/聚丙烯纤维增强热塑复合材料的制备及其性能[J].纺织学报,2019,40(3):71-75.
[12] 窦艳丽,李雪菲,张天琪,等.β-环糊精-聚磷酸铵对黄麻/聚丙烯复合材料阻燃性能的影响[J].复合材料学报,2019,36(11):2568-2578.
[13] Quintiere J G.火灾学基础[M].北京:化学工业出版社,2010.
[14] 左晓玲,邵会菊,吴斌,等.热氧老化对阻燃型长玻纤增强尼龙6静动态力学及降解动力学的影响[J].高分子材料科学与工程,2014,30(6):54-59.
[15] 许瑞,徐闻,程赫鹏.亚麻/LLDPE复合材料力学性能的研究[J].复合材料学报,2002(5):14-21.
[16] 胡荣祖,高胜利,赵凤起,等.热分析动力学,第二版[M].北京:科学出版社,2008.
[17] Chrissafis K.Kinetics of thermal degradation of polymers:complementary use of isoconversional and model-fitting methods[J].Journal of Thermal Analysis and Calorimetry,2009,95(1):273-283.
[18] Friedman H L.Kinetics of thermal degradation of char-forming plastics from thermogravimetry.Application to a phenolic plastic[J].Journal of Polymer Science Part C:Polymer Symposia,1964,6(1):183-195.
[19] Chen R Y,Xu X K,Lu S X,et al.Pyrolysis study of waste phenolic fibre-reinforced plastic by thermogravimetry/Fourier transform infrared/mass spectrometry analysis[J].Energy Conversion & Management,2018,165:555-566.
基金资助
辽宁省自然科学基金(20180540033、20180550746)
PDF
