以正硅酸乙酯为前驱体,采用模板法制备了粒径为50 nm左右的SiO<,2>空心球,并将其掺入到环氧树脂中,制备了EP/SiO<,2>空心球纳米复合材料.采用傅立叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、热重分析(TGA)和精密阻抗分析仪分别对复合材料的化学结构、断面形貌、热稳定性及介电性能进行了表征.结果表明:在掺杂量不大于10%范围内,EP/SiO<,2>空心球纳米复合材料的介电常数随电场频率的升高而逐渐降低,相同测试频率下,复合材料的介电常数随纳米SiO<,2>含量的增加而降低;复合材料的介质损耗(tanδ)随着频率的增加而增加,在10<'2>～10<'4>Hz,复合材料的tanδ均大于纯EP;在10<'4>～10<'6>Hz,复合材料的tanδ均小于纯EP;复合材料的热稳定性稍有改善.
参考文献
| [1] | Zhang H L;Zhao C X;Wang X Y .Preparation and Characterization of Epoxy-silica Composite Materials by the Sol-gel Process[J].Journal of Materials Science,2005,40:1079-1085. |
| [2] | 赵玉顺 .环氧树脂电力、电子封装材料的制备及其性能研究[D].重庆大学,2007. |
| [3] | Parveen Khurana;S Aggarwal;AK Narula;Veena Choudhary .Studies on the curing and thermal behaviour of DGEBA in the presence of bis(4-carboxyphenyl) dimethyl silane[J].Polymer international,2003(6):908-917. |
| [4] | 钱军民,李旭祥.环氧树脂改性研究进展[J].工程塑料应用,2001(10):50-53. |
| [5] | 张秀菊,李波,林志丹,王勇,吕丽霞,许吉庆,郑少杰.电子封装用复合导热绝缘环氧胶粘剂的研制[J].绝缘材料,2009(01):1-4,14. |
| [6] | Wang YZ;Chen WY;Yang CC;Lin CL;Chang FC .Novel epoxy nanocomposite of low D-k introduced fluorine-containing POSS structure[J].Journal of Polymer Science, Part B. Polymer Physics,2007(4):502-510. |
| [7] | Park, SJ;Jin, FL;Lee, CJ .Preparation and physical properties of hollow glass microspheres-reinforced epoxy matrix resins[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,2005(1-2):335-340. |
| [8] | 王严杰,张续柱,肖忠良,王四清,陶文斌,杜立敏.高频低介电常数改性环氧树脂覆铜板的研制[J].工程塑料应用,2002(04):35-37. |
| [9] | Edward J A;Pope J D.Mackenzie .Nd-doped Silica Glass I:Structural Evolution in the Sol-gel State[J].Journal of Non-Crystalline Solids,1988,106(1-3):236-241. |
| [10] | Lu, SR;Jiang, YM;Wei, C .Preparation and characterization of EP/SiO2 hybrid materials containing PEG flexible chain[J].Journal of Materials Science,2009(15):4047-4055. |
| [11] | Setven R;Dvais A R;Brough A A .Formation of Silica/Epoxy Composite Network Polymers[J].Journal of Non-Crystalline Solids,2003,315:197-205. |
| [12] | Cheng Huang;Qiming Zhang .Enhanced Dielectric and Electromechanical Responses in High Dielectric Constant All-Polymer Percolative Composites[J].Advanced functional materials,2004(5):501-506. |
| [13] | 雷清泉,范勇,王暄.纳米高聚物复合材料的结构特性、应用和发展趋势及其思考[J].电工技术学报,2006(02):1-7,12. |
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%