TY - GEN
T1 - Properties of PAAM Grafted alumina/epoxy nanocomposites
AU - Chen, Yu
AU - Guo, Jielin
AU - Shao, Zhihui
AU - Cheng, Yonghong
AU - Wu, Jielong
AU - Tanaka, Toshikatsu
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/10/8
Y1 - 2015/10/8
N2 - The electric properties of nanocomposites are determined by the interface between nano particles and epoxy resin, so the interface modification is very important. In this paper, silane coupling agent which has a carbon-carbon double bond and an oxymethylphenyl was used to modify the surface of α-Al2O3. In the modification, carbon-carbon double bonds were introduced to the surface of nano particles. The carbon-carbon double bonds will serve as active groups in the grafting process. The polyacrylamide (PAAM) was grafted on the surface of α-Al2O3. And the amino groups were introduced to the surface of α-Al2O3. Then the interface between the nano particle and the epoxy resin can be reinforced by the reaction between the amino group and epoxy ring. The FTIR (Fourier Transform Infrared) spectrum of grafted alumina was tested to confirm the modification and grafting process. Then, five kinds of materials were prepared, i.e. neat epoxy, micro composites, and three kinds of nanocomposites with different contents of PAAM grafted alumina particles. The specimens with thickness of 200 μm were prepared for investigation. The SEM micrographs were investigated to observe the dispersion of nano particles in epoxy resin. And the properties including the thermal behavior, dielectric strength, and dielectric spectrum were measured and analyzed. It is concluded that the epoxy nanocomposites loaded with PAAM grafted alumina particles show homogeneous dispersion, increasing thermal degradation initiation temperature and higher dielectric breakdown strength.
AB - The electric properties of nanocomposites are determined by the interface between nano particles and epoxy resin, so the interface modification is very important. In this paper, silane coupling agent which has a carbon-carbon double bond and an oxymethylphenyl was used to modify the surface of α-Al2O3. In the modification, carbon-carbon double bonds were introduced to the surface of nano particles. The carbon-carbon double bonds will serve as active groups in the grafting process. The polyacrylamide (PAAM) was grafted on the surface of α-Al2O3. And the amino groups were introduced to the surface of α-Al2O3. Then the interface between the nano particle and the epoxy resin can be reinforced by the reaction between the amino group and epoxy ring. The FTIR (Fourier Transform Infrared) spectrum of grafted alumina was tested to confirm the modification and grafting process. Then, five kinds of materials were prepared, i.e. neat epoxy, micro composites, and three kinds of nanocomposites with different contents of PAAM grafted alumina particles. The specimens with thickness of 200 μm were prepared for investigation. The SEM micrographs were investigated to observe the dispersion of nano particles in epoxy resin. And the properties including the thermal behavior, dielectric strength, and dielectric spectrum were measured and analyzed. It is concluded that the epoxy nanocomposites loaded with PAAM grafted alumina particles show homogeneous dispersion, increasing thermal degradation initiation temperature and higher dielectric breakdown strength.
KW - breakdown strength
KW - dielectric spectrum
KW - nanocomposites
KW - PAAM grafted alumina
KW - thermal properties
UR - https://www.scopus.com/pages/publications/84962557787
U2 - 10.1109/ICPADM.2015.7295267
DO - 10.1109/ICPADM.2015.7295267
M3 - 会议稿件
AN - SCOPUS:84962557787
T3 - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
SP - 297
EP - 300
BT - ICPADM 2015 - 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015
Y2 - 19 July 2015 through 22 July 2015
ER -