Preparation and property of PVDF/(PA6/BN/AlN) thermal conductive composite with double percolation structure

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  • 1. School of Chemistry and Chemical Engineering,Anhui University,Hefei 230601;
    2. Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province,Hefei 230601

Received date: 2019-03-19

  Online published: 2022-11-01

Abstract

Using boron nitride (BN) and aluminum nitride (AlN) as thermally conductive fillers,BN and AlN are dispersed in polyamide 6(PA6) by solution ultrasonic stripping,and then melt blended with polyvinylidene fluoride (PVDF),PVDF/(PA6/BN/AlN) thermal conductive composites with double percolation structure was prepared.The effect of BN/AlN loading on the thermal conductivity and dielectric properties of PVDF/PA6 composite were investigated.The results showed that BN/AlN selectively distributed in the PA6 phase.With the increase of BN/AlN loading,the thermal conductivity of the composite increases,which are beneficial to improve the heat absorption and heat dissipation ability of the composite.When the BN/AlN loading is 5wt%,the thermal conductivity of the composite is 0.564W/(m·K),and the thermal conductivity is increased by 164.8% compared with the pure PVDF/PA6 composite.The addition of BN/AlN is also beneficial to improve the dielectric properties of PVDF/PA6 composite.When BN/AlN is 5wt% and the frequency is 100Hz,the dielectric constant value is 11923,which was 917 times that of pure PA6/PVDF composite.

Cite this article

Zhang Zhen, Zhao Jun, Cao Ming, Chen Peng, Qian Jiasheng, Wu Bin, Xia Ru . Preparation and property of PVDF/(PA6/BN/AlN) thermal conductive composite with double percolation structure[J]. New Chemical Materials, 2020 , 48(7) : 60 -63 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.014

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