分散剂对炭黑/聚酰亚胺复合薄膜性能的影响  

Effects of Dispersant on Properties of Carbon Black/Polyimide Composite Films

作　　者：刘含茂[1] 刘杰 刘婷[1] 胡峰[1] 江乾[1] 刘亦武 LIU Hanmao;LIU Jie;LIU Ting;HU Feng;JIANG Qian;LIU Yiwu(Zhuzhou Times New Material Technology Co.,Ltd.,Zhuzhou 412007,China)

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《绝缘材料》2021年第11期84-87,共4页Insulating Materials

摘　　要：以4,4′-二氨基二苯醚(ODA)为二胺,均苯四甲酸二酐(PMDA)为二酐,不同类型分散剂表面处理的炭黑为遮光填料,制备了一系列黑色聚酰亚胺(PI)薄膜,探讨分散剂对炭黑/PI薄膜表面形貌和性能的影响。结果表明:经分散剂表面处理后的炭黑在PI基体中的分散性及有机-无机的界面相容性得到提升,降低了炭黑团聚程度,提高了薄膜的性能;当采用YK-3(改性嵌段聚合物)分散剂处理炭黑时,薄膜的表面形貌和性能最佳,其电气强度、拉伸强度、断裂伸长率分别为145 kV/mm、146 MPa、38%,光透过率接近0。A series of black polyimide(PI)films were prepared by using 4,4′-diaminodiphenyl ether(ODA)as diamine,pyromellitic dianhydride(PMDA)as dianhydride,and carbon black treated with different types of dispersants as shading filler,respectively,and the effects of dispersants on the surface morphology and properties of the carbon black/PI films were investigated.The results show that the dispersibility of carbon black treated with dispersants in PI matrix and the organic-inorganic interface compatibility are improved,the agglomeration degree of carbon black decreases,and the properties of the films increase.When the carbon black is treated by YK-3(modified block polymer),the surface morphology and properties of the film are the best,its electric strength,tensile strength,and elongation at break are 145 kV/mm,146 MPa,and 38%,respectively,and the light transmittance is close to 0.

关 键 词：黑色聚酰亚胺薄膜 炭黑 分散剂 透过率 

分 类 号：TM215.3[一般工业技术—材料科学与工程] TQ323.7[电气工程—电工理论与新技术]