Bocz Katalin, Simon Dániel, Bárány Tamás, Marosi György
Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest H-1111, Hungary.
Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest H-1111, Hungary.
Polymers (Basel). 2016 Aug 8;8(8):289. doi: 10.3390/polym8080289.
The flame retardant synergism between highly stretched polymer fibres and intumescent flame retardant systems was investigated in self-reinforced polypropylene composites. It was found that the structure of reinforcement, such as degree of molecular orientation, fibre alignment and weave type, has a particular effect on the fire performance of the intumescent system. As little as 7.2 wt % additive content, one third of the amount needed in non-reinforced polypropylene matrix, was sufficient to reach a UL-94 V-0 rating. The best result was found in self-reinforced polypropylene composites reinforced with unidirectional fibres. In addition to the fire retardant performance, the mechanical properties were also evaluated. The maximum was found at optimal consolidation temperature, while the flame retardant additive in the matrix did not influence the mechanical performance up to the investigated 13 wt % concentration.
在自增强聚丙烯复合材料中研究了高度拉伸的聚合物纤维与膨胀型阻燃体系之间的阻燃协同作用。结果发现，增强材料的结构，如分子取向程度、纤维排列和编织类型，对膨胀型体系的防火性能有特殊影响。添加剂含量低至7.2 wt%，仅为非增强聚丙烯基体所需量的三分之一，就足以达到UL-94 V-0等级。在单向纤维增强的自增强聚丙烯复合材料中发现了最佳结果。除了阻燃性能外，还对机械性能进行了评估。在最佳固结温度下发现最大值，而在基体中添加阻燃剂直至所研究的13 wt%浓度时，均不影响机械性能。
