以聚丙烯(PP )为基体树脂,聚磷酸铵(APP)和三聚氰胺(MA)为无卤阻燃剂,无机矿物质凹凸棒土(AT)为协同阻燃剂,采用熔融共混的方法制备了 PP/无卤阻燃剂/AT 复合材料.采用扫描电子显微镜(SEM)对复合材料的微观形貌进行了研究；通过极限氧指数(LOI)和热重分析(TG)研究了材料的阻燃性和热稳定性；通过对复合材料拉伸强度、冲击强度、弯曲强度以及断裂伸长率等的测试,研究了材料的力学性能.结果表明,无卤阻燃剂APP、MA和AT可在PP体系中均匀分散；阻燃剂的加入使得复合材料的力学性能降低,但 AT 的加入对又可显著提升其力学性能；阻燃剂与 AT 的协同作用可使复合材料的热稳定能和阻燃性能明显改善,材料的极限氧指数可达到27．3,提高了约40％.
In this work,a polypropylene (PP)composite was prepared by melt-blending with ammonium polyphosphate (APP)and melamine (MA)as flame retardants and attapulgite (AT)as synergistic flame re-tardant.Scanning electron microscope (SEM)was used to observe the morphology of the composite.The flame-retardant resistance and thermal stability were evaluated by limiting oxygen index (LOI)and thermogravimetry (TG),and the mechanical properties were also characterized by tensile test,bending test and impact test.The results showed that the mechanical property of the composite decreases after the flame retardant was incorporat-ed,but it is remarkably strengthened due to the addition of AT compared to pure PP.The LOI of the material was 27.3,which was the 40% of increment than that of pure PP.
参考文献
| [1] | 张通,郑玉婴,陈德贤,王攀.合成反应型磷酸酯及其对TPU阻燃和力学性能的影响[J].功能材料,2012(13):1733-1736. |
| [2] | Chrissafisa K;Bikiaris D .Can nanoparticles really enhance thermal stability of polymers Part Ⅰ:an overview on thermal decomposition of addition polymers[J].Thermo-chimica Acta,2011,523(1-2):1-24. |
| [3] | Shen H;Wang Y H et al.Research and preparation of halogen-free flame-retardant polypropylene[J].Procedia Engineering,2011,11:394-400. |
| [4] | 邹志量,夏延致,纪全,全凤玉,郝晓丽.二苯基磷酸阻燃噁唑啉改性的聚丙烯腈的机理[J].功能材料,2011(z3):573-576. |
| [5] | Aubert, M.;Tirri, T.;Wilén, C.-E.;Fran?ois-Heude, A.;Pfaendner, R.;Hoppe, H.;Roth, M. .Versatile bis(1-alkoxy-2,2,6,6-tetramethylpiperidin-4-yl)-diazenes (AZONORs) and related structures and their utilization as flame retardants in polypropylene, low density polyethylene and high-impact polystyrene[J].Polymer Degradation and Stability,2012(8):1438-1446. |
| [6] | Chen, XL;Jiao, CM .Synergistic effects of hydroxy silicone oil on intumescent flame retardant polypropylene system[J].Journal of Polymer Research,2009(5):537-543. |
| [7] | AilianXue;Shouyong Zhou;Yijiang Zhao;Xiaoping Lu;Pingfang Han.Effective NH_2-grafting on attapulgite surfaces for adsorption of reactive dyes[J].Journal of hazardous materials,2011:7-14. |
| [8] | 赵义平,阎家建,陈丁猛,陈莉,董知之,付维贵.复配无卤阻燃聚氨酯泡沫塑料的制备与表征[J].功能材料,2013(05):697-699. |
| [9] | Min Li;Zhishen Wu;Hongtao Kao .Study on preparation, structure and thermal energy storage property of capric-palmitic acid/attapulgite composite phase change materials[J].Applied energy,2011(9):3125-3132. |
| [10] | Liang Shao;Jianhui Qiu;Mingzhu Liu .Preparation and characterization of attapulgite/polyaniline nanofibers via self-assembling and graft polymerization[J].Chemical engineering journal,2010(1/2):301-307. |
| [11] | 刘许强,常希俊.叶酸修饰的凹凸棒土对Pb（Ⅱ）的吸附[J].光谱实验室,2013(01):177-180. |
| [12] | 史建设,张春祥,杨绪杰,陆路德,汪信.纤维状凹凸棒增强尼龙6的微观结构及力学性能[J].功能材料,2010(05):830-832. |
| [13] | 冯辉霞,张娟,吴洁.壳聚糖/改性凹土复合树脂的制备及其缓释性能研究[J].功能材料,2013(03):388-392. |
| [14] | 覃岽益,于金超,彭志勤,胡智文.魔芋葡甘聚糖／凹凸棒土复合膜的制备与表征[J].功能材料,2012(21):2906-2911. |
| [15] | 陈志刚,郭亭亭,李霞章,陈丰,陆晓旺,张跃.凹凸棒土负载CeO2催化氧化处理亚甲基蓝染料废水[J].功能材料,2009(10):1709-1712. |
| [16] | Du Jianxin;Hao Jianwei;Wang Jianqi .An investigation between SiO2,Al2 O3 and PP/APP/PER IFR system through cone calorimeter[J].Polymer Materials Science and Engineering,2004,20(01):165-167. |
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