Production of PI/PTFE@PI nanocomposite membranes as dielectric materials using electrospinning and dip-coating methods

被引：0

作者：

Abdullaev, Azim ^{[1
,2
,3
,4
]}

Liu, Fujian ^{[1
,3
]}

Peng, Kun ^{[1
]}

You, Yujie ^{[1
]}

Qu, Kehan ^{[1
]}

Islam, Zahidul ^{[1
]}

Si, Yinsong ^{[1
,3
]}

Fu, Yaqin ^{[1
,2
,3
]}

机构：

[1] Zhejiang Sci Tech Univ, Sch Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

[2] Zhejiang Sci Tech Univ, Int Silk Inst, Sch Text Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

[3] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Minist Educ, Hangzhou 310018, Zhejiang, Peoples R China

[4] Namangan Inst Engn & Technol, Sch Engn Technol, Namangan City 160115, Namangan, Uzbekistan

来源：

COMPOSITES COMMUNICATIONS | 2025年 / 56卷

基金：

中国国家自然科学基金;

关键词：

Electrospinning; Coating; Bonding structure; Low-dielectric; High frequency; POLYIMIDES; PTFE;

D O I：

10.1016/j.coco.2025.102367

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The development of advanced dielectric materials is integral to improving the performance of high-frequency telecommunication devices. Developing composite membranes that effectively balance superior dielectric properties, high thermal stability, mechanical strength, and other key characteristics for practical applications remains a significant challenge. This study presents the fabrication of a nanocomposite membrane, combining polyimide (PI) and polytetrafluoroethylene (PTFE) within a PI matrix, designed for dielectric applications. The PI/PTFE@PI nanocomposite membranes were fabricated through electrospinning and dip-coating techniques. These membranes exhibited dielectric constants between 1.64 and 1.99 at 10 GHz, accompanied by a low dielectric loss, ranging from 0.001 to 0.009. Dielectric breakdown strengths varied between 108.38 and 169.44 kV mm-1. Mechanical properties included a tensile strength of 26.81 MPa and a Young's modulus of 858 MPa. Thermal stability tests showed a maximum thermal degradation temperature (Tmax) of 659 degrees C and a 5 % weight loss temperature (Td5%) of 450 degrees C for pure PI composite membranes. The PI/PTFE@PI-40 % composite membrane demonstrated a water contact angle of 110.8 degrees and a water absorption rate of 0.5 %, indicating its suitability as a potential dielectric material for telecommunication applications.

引用

页数：12