Effect of halogen-free nanoparticles on the mechanical, structural, thermal and flame retardant properties of polymer matrix composite
Effect of halogen-free nanoparticles on the mechanical, structural, thermal and flame retardant properties of polymer matrix composite
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DOI：
10.1016/j.compstruct.2017.03.093
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发表时间：
2018
影响因子：
6.3
通讯作者：
M. Yurddaşkal;E. Çeli̇k
中科院分区：
文献类型：
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作者：
M. Yurddaşkal;E. Çeli̇k
在这项工作中，聚丙烯（PP）纳米复合材料增强与30重量%的无卤阻燃剂，这是通过在双螺杆挤出机熔融复合，然后注射成型技术制备。目的是通过增强不同组成的无卤纳米颗粒来制备阻燃纳米复合材料，并研究该纳米复合材料在工业应用中的可用性。在此范围内，无卤纳米碳酸钙/水菱镁矿，三氧化二锑，膨润土和硼酸锌颗粒增强聚丙烯基体。研究了不同矿物种类和含量对含无卤阻燃剂的聚丙烯纳米复合材料的结构、热性能、力学性能和阻燃性能的影响。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、热重分析（TGA）、拉伸试验和UL 94阻燃试验对复合材料的结构、热性能、力学性能和阻燃性能进行了表征。TGA和阻燃测试表明，与纯PP和包含其他矿物类型的PP复合材料相比，在碳酸钙镁石/水菱镁矿存在下的分解温度增加。结果表明，随着矿物含量的增加，PP复合材料的阻燃性能得到改善，表明碳酸钙镁石/水菱镁矿与PP之间具有良好的相容性，使PP的UL 94阻燃等级达到V-0级。
In this work, polypropylene (PP) nanocomposites were reinforced with 30 wt% of halogen-free flame retardants, which were prepared by melt compounding in a twin-screw extruder followed by injection molding technique. It was aimed to produce flame retardant nanocomposites by reinforcing different halogen-free nanoparticles with various compositions and to investigate the usability of the nanocomposites in industrial applications. Within this scope, halogen-free nano sized huntite/hydromagnesite, antimony trioxide, bentonite and zinc borate particles were reinforced to polypropylene matrix. The influence of different mineral type/content was investigated for polypropylene nanocomposites containing halogen-free flame retardants on the structural, thermal, mechanical and flame retardant properties. The nanocomposites were analyzed with X-ray diffraction (XRD), scanning electron microscopy (SEM), thermo-gravimetric analysis (TGA), tensile and UL94 flame retardancy tests to characterize the structural, thermal, mechanical and flame retardant behaviour of the PP composites. TGA and flame retardant tests showed that the decomposition temperature was increased in the presence of huntite/hydromagnesite in comparison to neat PP and PP composites comprising other mineral types. It was concluded that the flame retardancy behaviour of PP composites was improved within creasing mineral content, indicating that the UL94 rating reached V-0 via a good compatibility between huntite/hydromagnesite and PP.