Multifunctionality of cement based composite with electrostatic self-assembled CNT/NCB composite filler

• Autorzy: Zhang L. , Han B. , Ouyang J. , Yu X. , Sun S. , Ou J.

Identyfikatory

DOI

10.1016/j.acme.2016.11.001

• Języki publikacji: EN

Abstrakty

EN

In this paper, electrostatic self-assembled carbon nanotube (CNT)/nanocarbon black (NCB) composite is employed as filler for developing multifunctional cement-based composites. The performances of the composites with different content of filler are investigated. The electrochemical impedance spectroscopy and equivalent circuit are used to explore the conductive and mechanical mechanisms of the composites. Experimental results indicate that the compressive strength and elasticity modulus of the composites sharply decrease when the filler content exceeds 0.77 vol.%. The percolation threshold zone of the electrical conductivity of the composites ranges from 0.39 vol.% to 1.52 vol.%. The piezoresistive properties of the composites with 2.40 vol.% filler are stable and sensitive, and the maximum fractional change of electrical resistivity is 25.4% when the stress amplitude is 10 MPa. The composites feature sensitive and linear thermal resistance effect when the filler content is 0.77 vol.%. Electromagnetic shielding effectiveness of the composites with 2.40 vol.% filler at 18 GHz is 5.0 dB, which is 2.2 times of that of the control samples. The composites exhibit high absorbing electromagnetic wave performances in the frequency range of 2–18 GHz, and the minimum reflectivity reaches −23.08 dB with 0.77 vol.% filler.

Słowa kluczowe

EN

CNT/NCB composite filler; electrical resistivity; piezoresistivity; thermal-resistance effect

PL

kompozyty; rezystancja; odporność termiczna

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. 17, no. 2
• Strony: 354--364
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wykr.

Twórcy

autor

Zhang L.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

autor

Han B.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

autor

Ouyang J.

• School of Transportation and Logistics, Dalian University of Technology, Dalian 116024, China

autor

Yu X.

• Department of Mechanical Engineering, New York Institute of Technology, New York, NY 11568, USA
• School of Machinery and Automation, Wuhan University of Science and Technology, Wuhan 430081, China

autor

Sun S.

• School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

autor

Ou J.

• School of Civil Engineering, Dalian University of Technology, Dalian 116024, China
• School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)