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Study on MWNTs/Carbon Black/BR Conductive Composite

Haiqing Hu

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Abstract

The conductivity and physical properties of MWNTs/carbon black/BR composite prepared by mechanical blending method were studied.The results showed that MWNTs could improve the conductivity of BR more effectively compared with carbon black.When the addition level of carbon black was 40 phr,volume resistivity of composite could be reduced from 1.2×1010 Ω·cm to 7.0×105 Ω·cm by adding 1 phr MWNTs.When the blending ratio of MWNTs/carbon black was 5/40,the synergistic reinforcing effect between MWNTs and carbon black in BR was strong,and the Shore A hardness,tensile strength,elongation at break and tear strength of composite were improved significantly.

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What this paper is about

The conductivity and physical properties of MWNTs/carbon black/BR composite prepared by mechanical blending method were studied.The results showed that MWNTs could improve the conductivity of BR more effectively compared with carbon black.When the addition level of carbon black was 40 phr,volume resistivity of composite could be reduced from 1.2×1010 Ω·cm to 7.0×105 Ω·cm by adding 1 phr MWNTs.When the blending ratio of MWNTs/carbon black was 5/40,the synergistic reinforcing effect between MWNTs and carbon black in BR was strong,and the Shore A hardness,tensile strength,elongation at break and tear strength of composite were improved significantly.

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Available abstract

The conductivity and physical properties of MWNTs/carbon black/BR composite prepared by mechanical blending method were studied.The results showed that MWNTs could improve the conductivity of BR more effectively compared with carbon black.When the addition level of carbon black was 40 phr,volume resistivity of composite could be reduced from 1.2×1010 Ω·cm to 7.0×105 Ω·cm by adding 1 phr MWNTs.When the blending ratio of MWNTs/carbon black was 5/40,the synergistic reinforcing effect between MWNTs and carbon black in BR was strong,and the Shore A hardness,tensile strength,elongation at break and tear strength of composite were improved significantly.

Key concepts: Carbon black, Shore durometer, Materials science, Ultimate tensile strength, Composite number, Composite material, Elongation, Carbon nanotube

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