Preparation and properties of MDA-BAPP-BTDA copolyimide/18-crown ether-6 supramolecular films with inclusion structure and ultralow dielectric constants

被引：2

作者：

Xiao, Chunguang ^{[1
]}

Li, Duxin ^{[1
]}

Lang, Feng ^{[1
]}

Xiang, Yu ^{[1
]}

Lin, Yi ^{[1
]}

Ou, Baoli ^{[2
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha, Peoples R China

[2] Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2021年 / 8卷 / 07期

基金：

中国国家自然科学基金;

关键词：

copolyimide; supramolecular films; crown ether; inclusion structure; dielectric constant; mechanical properties; GAS-TRANSPORT PROPERTIES; PERMEATION PROPERTIES; HIGH ORGANOSOLUBILITY; AROMATIC POLYIMIDES; UNITS PREPARATION; CO-POLYIMIDE; MIXED-GAS; PURE; MEMBRANES; TRANSPARENCY;

D O I：

10.1088/2053-1591/ac161f

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to obtain polyimide composites with ultra-low dielectric constant, a series of MDA-BAPP-BTDA copolyimides/18-crown ether-6 (CPI/18-CE) supramolecular films with inclusion structure were prepared. The effects of 18-CE on CPI's thermal, mechanical, dielectric and water absorption properties were investigated. The inclusion rate of 18-CE to CPI backbone was similar to 50%. The introduction of 18-CE slightly reduced the thermal properties of CPI/18-CE supramolecular films, but greatly improved their mechanical, dielectric and hydrophobic properties. The tensile strength, young's modulus and elongation at break of CPI/18-CE supramolecular films were maximally increased by 21.8%, 34.1% and 92.9% respectively. Meanwhile their dielectric constant, dielectric loss and water absorption were as low as 2.10, 0.007 and 0.63%, respectively. In summary, CPI/18-CE supramolecular films possess excellent dielectric properties and broad application prospect in the field of microelectronics.

引用

页数：12