应用化学 ›› 2020, Vol. 37 ›› Issue (6): 666-672.DOI: 10.11944/j.issn.1000-0518.2020.06.190354

• 研究论文 • 上一篇    下一篇

二维水滑石纳米片对氧化铝/聚酰亚胺复合薄膜耐电晕性能的影响

马平川a,马莉莉b,杨正慧a,郭海泉a*(),高连勋a   

  1. a中国科学院长春应用化学研究所,高分子复合材料工程实验室 长春 130024
    b青岛科技大学先进电工材料研究院 山东 青岛 266042
  • 收稿日期:2019-12-27 接受日期:2020-03-31 出版日期:2020-06-01 发布日期:2020-06-08
  • 通讯作者: 郭海泉
  • 基金资助:
    吉林省科技发展计划(20170204024GX)项目资助

Improved Corona-Resistance Properties of Alumina/Polyimide Films with Exfoliated Layered Double Hydroxide Nanosheets

MA Pingchuana,MA Lilib,YANG Zhenghuia,GUO Haiquana*(),GAO Lianxuna   

  1. aLaboratory of Polymer Composites Engineering,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    bAdvanced Electrical Materials Research Institute,Qingdao University of Science and Technology,Qingdao,Shandong 266042,China
  • Received:2019-12-27 Accepted:2020-03-31 Published:2020-06-01 Online:2020-06-08
  • Contact: GUO Haiquan
  • Supported by:
    Supported by the Jilin Provincial Science and Technology Development Program(No.20170204024GX)

摘要:

将二维层状材料水滑石剥离为二维纳米片分散液,向其中加入纳米氧化铝,并进行聚酰亚胺(PI)的原位聚合,构筑PI/水滑石纳米片/氧化铝纳米粒子三元复合薄膜。 结果表明,在PI薄膜中同时加入质量分数为10%氧化铝和2%水滑石纳米片,比仅加入质量分数为10%氧化铝时的耐电晕时间(180 min)提高了12倍,拉伸强度提高了37.8%。 聚合物中同时加入纳米片、纳米粒子两种不同形貌填料,能够同时提升复合材料的耐电晕性能和机械性能。

关键词: 聚酰亚胺, 耐电晕, 氧化铝, 水滑石

Abstract:

Incorporation of inorganic nanoparticles to polyimides is an important strategy to improve corona resistance. The improvement of corona-resistant characteristics is closely related to the dispersion of nano fillers. The controllable distribution of nanoparticles in polymer matrix has always been a challenge. In this paper, The Al2O3/polyimide(PI) composites were synthesised via in situ polymerization in the solution of two-dimensional nano-sheets exfoliated from layered double hydroxides (LDH). In the process of the film formation, the two-dimensional nano-sheets tend to aggregate and orientate towards the substrates with the solvent volatilization, which would affect the distribution of Al2O3 in the polymer matrix, and furthermore improve the corona resistance of the Al2O3/LDH/PI composites. The corona resistance time of Al2O3/LDH/PI composites is 180 min, and improves by twelve-fold when 2% (mass fraction) LDH is added into 10% (mass fraction) Al2O3/PI composites, and the tensile strength increases by 37.8%. Due to the different morphologies, the combination of two-dimensional nanosheets and nanoparticles can effectively improve the corona resistance and mechanical properties of Al2O3/LDH/PI composite films.

Key words: polyimides, corona resistance, alumina, layered double hydroxides