选用乙烯-丙烯酸酯-甲基丙烯酸缩水甘油酯(E-MA-GMA)三元共聚物对纳米SiO2表面进行修饰包覆改性,考察改性后纳米SiO2在聚对苯二甲酸丁二醇酯(PBT) 体中的分散情况及对PBT复合材料力学性能的影响.FTIR、TEM、SEM结果表明,E-MA-GMA的环氧基团与纳米SiO2的-OH基团发生反应,破坏了SiO2的链状团聚结构,降低了纳米粒子间氢键等作用力.质量分数为10%～20N E-MA-GMA改性的纳米SiO2在PBT基体中的分散性及其与基体的相容性均得到明显改善,从而提高了PBT基复合材料的弯曲和拉伸性能.与纯PBT相比,SiO2/PBT复合材料的拉伸强度提高了9%,而弯曲强度和模量分别提高了14%和20%.
参考文献
| [1] | Hong J S,Namkung H,Ahn K H,et al.The role of organically modified layered silicate in the breakup and coalescence of droplets in PBT/PE blends[J].Polymer,2006,47(11):3967-3975. |
| [2] | Xiao J F,Hu Y,Wang Z Z,et al.Preparation and characterization of poly(butylene terephthalate) nanocomposites from thermally stable organic-modified montmorillonite[J].European Polymer Journal,2005,41(5):1030-1035. |
| [3] | 郑海忠,张坚,鲁世强,等.核-壳式纳米Al2O3/PS复合粒子改性聚苯乙烯的选区激光烧结实验研究[J].复合材料学报,2006.23(1):63-68.Zheng Haizhong,Zhang Jian,Lu Shiqiang,et al.Selective laser sintering of polystyrene modified by Al2O3/PS composite particles with core-shell structure[J].Acta Materiae Compositae Sinica,2006,23(1):63-68. |
| [4] | 高光辉,赵文卓,赵云娜,等.亚微米核壳橡胶粒子改性聚苯乙烯接枝度对形态结构及力学性能的影响[J].复合材料学报,2007,24(2):33-37.Gao Guanghui,Zhao Wenzhuo,Zhao Yunna,et al.Submicron core-shell rubber particles modified polystyrene-Effects of grafting degree on morphology and mechanicalproperty[J].Acta Materiae Compositae Sinica,2007,24(2):33-37. |
| [5] | Li X C,Rang T K,Cho W J,et al.Preparation and characterization of poly(butylene terephthalate)/organoclay nanocomposites[J].Macromolecular Rapid Communications,2001,22(16):1306-1312. |
| [6] | Nogales A,Broza G,Roslaniec Z,et al.Low percolation threshold in nanocomposites based on oxidized single wall carbon nanotubes and poly(butylene terephthalate)[J].Macromolecules,2004,37(20),7669-7672. |
| [7] | 周彤辉,阮文红,王跃林,等.原位接枝改性纳米二氧化硅/聚丙烯复合材料Ⅰ:结构表征[J].复合材料学报,2006.23(2):71-76.Zhou Tonghui,Ruan Wenhong,Wang Yuelin,et aL Polypro pylene composites with nano-silica modified by in-situ grafting polymerization Ⅰ:Structure characterization[J].Acta Mateiae Compositae Sinica,2006,23(2),71-76. |
| [8] | Friedrich Klaus,容敏智,章明秋,等.纳米SiO2/聚丙烯复合材料的微观结构[J].复合材料学报,2006,23(1):44-50.Friedrich Klaus,Rong Minzhi,Zhang Mingqiu,et al.Microstructural analysis of nanosilica reinforced polypropylene composite[J].Acta Materiae Compositae Sinica,2006,23(1):44-50. |
| [9] | Sun S S,Li C Z,Zhang L,et al.Effects of surface modification of fumed silica on interfacial structures and mechanical properties of poly(vinyl chloride) composites[J].European Polymer Journal,2006,42(7),1643-1652. |
| [10] | 赖强,刘河州,胡文彬,等.纳米SiO2改性浇注型聚氯酯的性能[J].机械工程材料,2007,31(9):61-63.Lai Qiang,Liu Hezhou,Hu Wenbin,et al.Properties of casted polyurethane reinforced by nano-sized SiO2[J].Materials for Mechanical Engineering,2007,31(9),61-63. |
| [11] | Jesionowski T,Bula K,Janiszewski J,et al.The influence of filler modification on its aggregation and dispersion behaviour in silica/PBT composite[J].Composite Interfaces,2003,10 (2/3):225-242. |
| [12] | Rong M Z,Zhang M Q,Pan S L,et al.Interfacial effects in polypropylene-silica nanocomposites[J].Journal of Applied Polymer Science,2004,92(3):1771-1781. |
| [13] | Che J F,Luan B Y,Yang X J,et al.Graft polymerization onto nano-sized SiO2 surface and its application to the modification of PBT[J].Materials Letter,2005,59(13):1603-1609. |
| [14] | Sun S L,Xu X Y,Yang H D,et al.Toughening of poly (butylene terephthalate) with epoxy-functionalized acrylonitrile-butadiene-styrene[J].Polymer,2005,46(18),7632-7643. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%