Epoxy-polypyrrole-straw composites: Towards higher dielectric constant and lower water absorption

被引：8

作者：

Khan, Anam ^{[1
]}

Tyagi, Prashant ^{[1
]}

Pappu, Asokan ^{[1
]}

机构：

[1] CSIR, Adv Mat & Proc Res Inst, Hoshangabad Rd, Bhopal 462026, Madhya Pradesh, India

来源：

MATERIALS LETTERS | 2019年 / 254卷

关键词：

Polymeric composites; Dielectrics; Interfaces; Epoxy; Paddy straw; Chemical vapour deposition; POLYMER COMPOSITES; PERMITTIVITY;

D O I：

10.1016/j.matlet.2019.07.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Epoxy composites exhibiting high dielectric constant, low dissipation and reduced water absorption were prepared using a functionalized agro-waste as filler. The approach involved thin coating of Polypyrrole (PPy) conducting polymer over micron sized paddy straw (St) particles accomplished via vapour phase polymerization. The PPy coated particles filled epoxy composites exhibited a significant similar to 315% increase in dielectric constant (similar to 23 at 1 KHz), low dissipation factor (0.017 at 1 KHz) and marked reduction in water absorption (similar to 50%; 360 h) as compared to their counterparts filled with uncoated particles. The successful preparation of these composites with improved performance and lightweight paves the way for very low cost sustainable and eco-friendly materials for high end electronics and sensing applications. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：262 / 265

页数：4

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