摘要
采用KH560偶联剂改性贝壳粉填充的环氧树脂预聚物胶液涂布玻纤布,热压固化制备环氧树脂基复合材料。通过偏光显微镜、凝胶时间测定仪、扫描电镜、高阻计、耐电痕化指数测试仪等分别研究了贝壳粉体在环氧树脂胶中稳定性和分散性,胶液凝胶化时间,复合材料界面形态及力学性能和电气性能等。实验结果表明,减小粒径和表面改性均可延长贝壳粉在树脂胶液中沉降时间,而后者对改善其分散性效果明显。贝壳粉中一些极性基团可与环氧树脂的环氧基发生反应,从而以化学键形式接入热固性树脂交联网络有效改善界面结合力,提高材料力学性能,同时可保持较好的电气绝缘性,因此该复合材料在绝缘材料领域具有很好应用前景。
The glass fabric was coated by the epoxy resin glue filled with the shell powder that was surfacetreated with KH560 coupling agent,and then the epoxy resin based composites were prepared through hot pressing and solidification.The stability and dispersion of the shell powder in the glue,and glue gelation time,the interfacial morphology,mechanical performances and electric properties were investigated by polarizing microscope,SEM,high resistance meter,resistance to tracking index tester.The results show that both the reduction of the particle size and surface modification are advantageous to prolong the settlement time of the shell powder in glue,and the latter is obvious to improve the dispersion.The polar groups in shell powder can participate in the solidification reaction of epoxy resin,thus inserting the crosslinking net of the thermal set resin,which effectively improve the interfacial combination and enhance the mechanical performances.On the other hand,the electric insulativity of the shell powder filled system is well maintained.Accordingly,the composites show promise by serving as insulation materials.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2015年第10期124-127,共4页
Polymer Materials Science & Engineering
基金
福建省科技计划项目(2015Y0034)
海洋公益性行业科研专项经费资助(201505029)
厦门市科技计划项目(3502Z20132006)
厦门南方海洋研究中心项目资助(14GZP004NF04
14GQT61HJ31)
海洋三所基本科研业务费专项资金项目(海三科2013013)
高分子材料工程国家重点实验室自主课题经费资助(sklpme2014-3-11)
关键词
贝壳粉
表面改性
环氧树脂
复合材料
shell powder
surface modification
epoxy resin
composites
