Preparation and properties of barium titanate nanopowder/epoxy composites

被引：18

作者：

Chandradass, J. ^{[1
]}

Bae, Dong-Sik ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Nanopowder Processing & Synthesis Lab, Chang Won, Gyeongnam, South Korea

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2008年 / 23卷 / 02期

关键词：

BaTiO3; dynamic mechanical analysis; flexural strength; high-temperature curing; impact strength; mechanical properties; nanopowder; tensile strength; thermal properties; thermogravimetry analysis;

D O I：

10.1080/10426910701774320

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article is focused on the preparation of barium titanate nanopowder/epoxy composites and studying the effect of barium titanate nanopowder on improving mechanical and thermal characteristics of the epoxy polymer. Composites are prepared by dispersing barium titanate nanopowder in epoxy resin and, subsequently, cross-linking by using diamino diphenyl methane (DDM) curing agents. Synthesis of barium titanate nanopowder/epoxy composites is carried out for different concentrations (1, 3, and 5 by weight) of barium titanate nanopowder at high temperature. High-temperature curing (HTC) involves mixing the resin-nanopowder solution followed by DDM hardener and curing at 120 degrees C. Tensile, flexure, and impact results showed a maximum value of 72.7MPa, 2.98GPa, and 2J/cm, respectively. DSC analysis revealed that curing occurs at low temperature in the presence of barium titanate nanopowder. Thermogravimetry analysis (TGA) showed the increased thermal stability in the nanoparticle filled epoxy composites as compared with the pure epoxy counterparts. Dynamic mechanical analysis (DMA) revealed, maximum storage modulus of 6400MPa and glass transition temperature of 154 degrees C for 3wt% barium titanate nanopowder.

引用

页码：117 / 123

页数：7

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