z-logo
Premium
Preparation and characterization of waterborne epoxy coatings containing conductive PANi /silica nanoparticles
Author(s) -
Duong Nguyen Thuy,
Thuy Thai Thu,
Tham Do Quang,
Mai Tran Thi,
Trang Nguyen Thi Thu,
Vu Pham Gia,
Son Nguyen Anh
Publication year - 2020
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201900159
Subject(s) - polyaniline , materials science , epoxy , nanocomposite , composite material , dielectric , coating , nanoparticle , polymerization , scanning electron microscope , in situ polymerization , chemical engineering , polymer , nanotechnology , optoelectronics , engineering
This work reports on the mechanical and dielectric properties of waterborne epoxy coatings containing polyaniline/silica nanocomposites (PANi/SiO 2 ). The nanocomposites with different PANi/SiO 2 ratios were synthesized by in‐situ chemical oxidative polymerization method. The morphology and electric properties of PANi/SiO 2 were examined by field emission scanning electron microscopy (FESEM) and standard four‐probe electrode method. It was shown that the silica nanoparticles were grafted by PANi and it conducted a decrease of electrical conductivity of PANi/SiO 2 composites, compared to pure PANi. The epoxy coatings containing PANi/SiO 2 presented lower dielectric properties than that containing pure PANi. In contrast, the PANi/SiO 2 could maintain the breakdown voltage (from 16.6 to 19.1 kV/mm) and enhance impact resistance of conducting epoxy system up to 100 kg.cm. The results revealed that the PANi/SiO 2 nanocomposite can be used in electrical coating application with good dielectric strength and mechanical properties.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here