两种马来酸酐接枝物对膨胀阻燃聚丙烯增韧共混复合体系性能的影响

doi:10.11901/1005.3093.2016.318

材料研究学报

2017, Vol. 31

Issue (3): 219-225 DOI: 10.11901/1005.3093.2016.318

研究论文

本期目录 | 过刊浏览

两种马来酸酐接枝物对膨胀阻燃聚丙烯增韧共混复合体系性能的影响

金静¹(

),王昊²,舒中俊¹,卢林刚³

1 中国人民武装警察部队学院消防工程系廊坊 065000
2 中国人民武装警察部队学院研究生队廊坊 065000
3 中国人民武装警察部队学院科研部廊坊 065000

Effect of Two Maleic Anhydride Grafted Polymers as Modifier on Intumescent Flame Retardancy and Mechanical Property of Polypropylene Based Composites

Jing JIN¹(

),Hao WANG²,Zhongjun SHU¹,Lingang LU³

1 Department of Fire Protection Engineering, Chinese People's Armed Police Forces Academy, Langfang 065000, China
2 Graduates College, Chinese People's Armed Police Forces Academy, Langfang 065000, China
3 Department of Science and Technology, Chinese People's Armed Police Forces Academy, Langfang 065000, China

引用本文:

金静,王昊,舒中俊,卢林刚. 两种马来酸酐接枝物对膨胀阻燃聚丙烯增韧共混复合体系性能的影响[J]. 材料研究学报, 2017, 31(3): 219-225.
Jing JIN, Hao WANG, Zhongjun SHU, Lingang LU. Effect of Two Maleic Anhydride Grafted Polymers as Modifier on Intumescent Flame Retardancy and Mechanical Property of Polypropylene Based Composites[J]. Chinese Journal of Materials Research, 2017, 31(3): 219-225.

全文: PDF(1041 KB) HTML

摘要:

用膨胀型阻燃剂(IFR)和乙烯辛烯共聚物(POE)对聚丙烯(iPP)进行阻燃和增韧改性,比较研究了两种典型增容剂聚丙烯接枝马来酸酐(PP-g-MAH)和乙烯辛烯共聚物接枝马来酸酐(POE-g-MAH)对膨胀阻燃增韧共混复合体系阻燃性能以及力学性能的影响。结果表明：IFR可提高聚丙烯共混物的燃烧性能,但是明显降低材料的力学性能,而增容剂的加入可同时提高复合材料的燃烧性能和力学性能。PP-g-MAH使IFR的分散更均匀,添加1%(质量分数,下同)的PP-g-MAH使复合材料的平均热释放速率、热释放速率峰值、比消光面积平均值以及烟释放总量比未添加增容剂的阻燃材料分别下降24%、30%、56%和46%;而POE-g-MAH能使复合材料形成包覆结构,使其冲击强度明显提高,加入5%的POE-g-MAH可使复合材料冲击强度提高93%。

关键词 ：复合材料, 阻燃性能与力学性能, 共混复合, 增容剂

Abstract：

To improve the flame retardancy and mechanical properties of iso-polypropylene (iPP), composites of iPP/poly(ethylene-co-octene)/intumescent flame retardant (iPP/POE/IFR),were prepared by melt-extrusion process with a twin-screw extruder. And then their flame retardancy and mechanical properties were investigated systematically. Particularly, the effect of two typical compatibilizers, i.e. maleic anhydride grafted polymers of POE-g-MAH and PP-g-MAH, on the properties of the composites was examined in detail. The results show that IFR is efficient for improving the flame retardancy of the iPP blend, while harmful to their mechanical properties. By comparing with the composite without compatibilizer, the addition of 1%(mass fraction) compatibilizer can improve significantly the flame retardency and mechanical properties for the composites. Furthermore, pp-g-MAH is more effective in improving the flame retardency, while POE-g-MAH is preferable to enhance the mechanical properties. The optimized comprehensive properties are resulted from the fine dispersion of the intumescent flame retardant.

Key words： composite flame retardant and mechanical properties blending and composites compatibilizer

收稿日期: 2016-06-07

基金资助:国家自然科学基金(21472241)、北京分子科学国家实验室开放课题(2013015)及河北省自然科学基金(B2015507044)

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.318 或 https://www.cjmr.org/CN/Y2017/V31/I3/219

表1 iPP/POE/IFR复合材料配比、燃烧性能和力学性能

表2 iPP/POE/IFR/OMMT复合材料在35 kW/m2辐射通量下的锥形量热实验数据

图1 iPP/POE/IFR复合材料在35 kW/m2辐射功率下的锥形量热试验热释放速率曲线

图2 锥型量热实验测试后的膨胀炭层形貌

图3 锥型量热实验测试后的膨胀炭层微观形貌

表3 iPP/POE/IFR复合材料在35 kW/m2辐射功率下的锥形量热试验烟气数据

图4 复合材料冲击断面的微观形貌

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