Electrical, Thermal and Mechanical Properties of Epoxy/CNT/Calcium Carbonate Nanocomposites

被引：0
|
作者：
Backes, Eduardo Henrique [1 ]
Sene, Tarcisio Sanson [1 ]
Passador, Fabio Roberto [2 ]
Pessan, Luiz Antonio [1 ]
机构：
[1] Univ Fed Sao Carlos, Dept Engn Mat, Via Washington Luiz,Km 235, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Paulo, Inst Ciencia & Tecnol, Rua Talim 330, BR-12231280 Sao Jose Dos Campos, SP, Brazil
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2018年 / 21卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
Epoxy nanocomposites; MWCNT; dielectrical properties; DIELECTRIC-PROPERTIES; DISPERSION; NANOTUBES; SONICATION; BEHAVIOR; MATRIX; FILLER;
D O I：
10.1590/1980-5373-MR-2017-0801
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Epoxy/CNT and epoxy/CNT/calcium carbonate nanocomposites were produced via in situ polymerization assisted by ultrasonication without solvent and electrical, mechanical, thermal and thermomechanical properties of nanocomposites were evaluated. Epoxy/CNT presented very low percolation threshold, near 0.05 wt % and nanocomposites with higher contents of CNT presented further increase m electrical conductivity. The addition of calcium carbonate in epoxy/CNT nanocomposites increased the electrical conductivity, due to volume exclusion phenomena. Regarding thermal properties, due to the low content of the CNT and calcium carbonate no changes in glass transition (Tg) were observed. DMA results showed no significant changes in thermomechanical properties, once the contents of CNT and calcium carbonate are below stiffness threshold, however an increase of flexural modulus by adding CNT and calcium carbonate was observed.
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页数：8
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