TY - JOUR
T1 - Enhanced dielectric and mechanical properties of CaCu3Ti4O12/Ti3C2Tx MXene/silicone rubber ternary composites
AU - Zeng, Yu
AU - Rao, Shipeng
AU - Xiong, Chenhan
AU - Du, Guoping
AU - Fan, Zhaoyang
AU - Chen, Nan
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China ( 51362020, 21571095 ).
Publisher Copyright:
© 2021 Elsevier Ltd and Techna Group S.r.l.
PY - 2022/3/1
Y1 - 2022/3/1
N2 - Dielectric polymer composites with conducting fillers would have great potential for diverse applications if their severe leakage loss could be addressed. In this regard, ternary composites using both ceramic and conducting materials as fillers might be an enabler for high dielectric constant and low dielectric loss. Herein, ternary composites with both Ti3C2Tx MXene conducting nanosheets and CaCu3Ti4O12 (CCTO) dielectric particles embedded in silicone rubber were studied. It was found that a ternary composite with 1.2 wt% (0.40 vol%) Ti3C2Tx MXene and 12 wt% (2.58 vol%) CCTO could provide an overall superior performance that include a high dielectric constant of 8.8, low dielectric loss of less than 0.0015, good thermal stability up to 450 °C, and excellent mechanical properties with tensile strength of 569 kPa, elastic module of 523 kPa and elongation at break of 333%. The outstanding performance is attributed to the improved uniform dispersion and good interfacial compatibility of mixed fillers in the polymer matrix, suggesting ternary composites might be a better option over their binary counterparts in preparing high performance dielectric composites.
AB - Dielectric polymer composites with conducting fillers would have great potential for diverse applications if their severe leakage loss could be addressed. In this regard, ternary composites using both ceramic and conducting materials as fillers might be an enabler for high dielectric constant and low dielectric loss. Herein, ternary composites with both Ti3C2Tx MXene conducting nanosheets and CaCu3Ti4O12 (CCTO) dielectric particles embedded in silicone rubber were studied. It was found that a ternary composite with 1.2 wt% (0.40 vol%) Ti3C2Tx MXene and 12 wt% (2.58 vol%) CCTO could provide an overall superior performance that include a high dielectric constant of 8.8, low dielectric loss of less than 0.0015, good thermal stability up to 450 °C, and excellent mechanical properties with tensile strength of 569 kPa, elastic module of 523 kPa and elongation at break of 333%. The outstanding performance is attributed to the improved uniform dispersion and good interfacial compatibility of mixed fillers in the polymer matrix, suggesting ternary composites might be a better option over their binary counterparts in preparing high performance dielectric composites.
KW - Composites
KW - Dielectric properties
KW - Interfacial compatibility
KW - Mechanical properties
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U2 - 10.1016/j.ceramint.2021.11.150
DO - 10.1016/j.ceramint.2021.11.150
M3 - Article
AN - SCOPUS:85119500212
SN - 0272-8842
VL - 48
SP - 6116
EP - 6123
JO - Ceramics International
JF - Ceramics International
IS - 5
ER -