高朋召,林明清,林海军,李冬云,高波,肖汉宁.纳米二氧化硅改性环氧树脂复合材料的性能研究[J].湖南大学学报:自然科学版,2015,42(6):1~6
纳米二氧化硅改性环氧树脂复合材料的性能研究
Study on the Properties of Nano-SiO2 Modified Epoxy Composites
  
DOI:
中文关键词:  热稳定性  环氧树脂  改性纳米SiO2  介电性能
英文关键词:thermal stability  epoxy resin  modified nano-SiO2  dielectric properties
基金项目:
作者单位
高朋召,林明清,林海军,李冬云,高波,肖汉宁 (1.湖南大学 材料科学与工程学院湖南 长沙410082
2.湖南中泰特种装备有限责任公司湖南 临澧415211
3.中国计量学院 材料科学与工程学院浙江 杭州310018) 
摘要点击次数: 545
全文下载次数: 0
中文摘要:
      利用硅烷偶联剂对纳米SiO2进行表面改性,进而通过共混法将改性后的纳米SiO2粒子分散到环氧树脂(Epoxy)中,制备了不同纳米SiO2含量的SiO2/EP复合材料.利用IR,SEM和TGA、阻抗分析仪等研究了SiO2添加量对复合材料微观结构、热稳定性和介电性能的影响.结果表明,随着纳米SiO2含量的增加,SiO2/EP复合材料的热稳定性逐渐升高,介电常数和损耗因数则呈先降低后增加趋势;当纳米SiO2含量为4%时,纳米颗粒在复合材料中分散均匀,复合材料的热稳定性好,介电性能最优(当测试频率为1 GHz,介电常数为2.86,介电损耗为0.023 53).分析了复合材料热稳定和介电性能变化的微观机理.
英文摘要:
      The blending method was used to prepare nano-SiO2/epoxy composites, where nano-SiO2 was premodified using silane coupling agent. The influences of nano-SiO2 content on the microstructure, thermal stability and dielectric properties of SiO2/EP composites were studied by using IR, SEM, TGA, impedance analyzer et al. The microscopic mechanism of thermal stability and dielectric property evolutions of the SiO2/EP composites were also discussed. with the increase of nano-SiO2 content, the thermal stability of SiO2/EP composites gradually increased, while the dielectric constant and dielectric loss factor of the composites decreased first and then increased. When the content of nano-SiO2 equaled 4%, the nanoparticles exhibited a uniform dispersion in composite, its dielectric constant was 2.86, and its corresponding dielectric loss was 0.023 53.
查看全文  查看/发表评论  下载PDF阅读器
关闭