用十六烷基三甲基溴化铵(CTAB)对蒙脱土进行有机化处理,以过硫酸铵为引发剂,使丙烯腈单体在有机化蒙脱土层间进行原位聚合.对这种插层复合材料的的燃烧性能和热性能进行了初步研究,并且用红外光谱和X射线衍射对其结构进行了分析与表征.结果表明:PAN/MMT共混复合物的阻燃性能有一定提高,其极限氧指数从18%提高到了22%;耐热性能得到一定程度改善.红外光谱和X射线衍射分析结果显示:在蒙脱土片层之间通过原位聚合生成了聚丙烯腈大分子,使蒙脱土层间距有一定程度的增大.
Organized montmorillonite(O-MMT) was prepared using cetyl trimethyl ammonium bromide(CTAB). With ammonium persulfate as the initiator, Polyacrylonitrile (PAN) was made by in situ polymerization between the layer of O-MMT. The structure of PAN/MMT was characterized by Fourier transformed infrared spectroscopy (FT-IR) and X-ray diffractometry (XRD). Both the flame retardant property and heat resistanct were investigated. FT-IR and XRD indicated that the interlay spacing of MMT has been expanded, which was attributed to the fact that PAN has been intercalated into the layer by in situ polymerization. The LOI of the blend was enhanced from 18% to 22%, which revealed that the flame retardant property has been improved. In addition, the heat resistanct has been improved.
参考文献
| [1] | 石宁,王庆昭,倪礼忠,郑安呐.纳米蒙脱土的制备及在超高分子量聚乙烯中的应用[J].高分子材料科学与工程,2008(07):56-58,62. |
| [2] | 向莹,刘全校,张勇,曹国荣.蒙脱土的改性方法及应用现状[J].北京印刷学院学报,2007(04):30-33. |
| [3] | 孙晓波,朱利民.我国差别化腈纶的发展现状与对策[J].纺织导报,2007(08):50-53. |
| [4] | Khalil H;Mahajan D;Rafailovich M .Polymer-montmorillonite clay nanocomposites. Part 1: Complexation of montmorillonite clay with a vinyl monomer[J].Polymer international,2005(2):423-427. |
| [5] | Wang JC;Chen YH;Wang JL .Preparation and properties of a novel elastomeric polyurethane/organic montmorillonite nanocomposite[J].Journal of Applied Polymer Science,2006(6):3578-3585. |
| [6] | Deng SB;Bai RB .Adsorption and desorption of humic acid on aminated polyacrylonitrile fibers[J].Journal of Colloid and Interface Science,2004(1):36-43. |
| [7] | 漆宗能;尚文宇.聚合物/层状硅酸盐纳米复合材料理论与实践[M].北京:化学工业出版社,2002:57. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%