Abstract: Boron nitride/multi-walled carbon nanotube/brominated butyl rubber (BN/MWCNT/BIIR) composite was prepared by mechanical blending method.The mechanical property and thermal conductivity of composites were tested.The dispersion and distribution of BN and MWCNT in rubber matrix were observed.The corresponding theoretical analysis was carried out.Experimental results showed that the addition of BN and MWCNT can improve the mechanical property and thermal conductivity of BIIR efficiently.MWCNT played the main function in improving mechanical properties of BIIR composite.However,BN was easier to form a thermal conductivity net chain than MWCNT.BN and MWCNT had a synergistic effect on the improvement of thermal conductivity.SEM images showed that BN and MWCNT formed an effective filler network in BIIR matrix.
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