Mussel-Inspired and Magnetic Co-functionalization of Hexagonal Boron Nitride in Poly(vinylidene fluoride) Composites Toward Enhanced Thermal and Mechanical Performance for Heat Exchangers

• DOI: 10.1021/acsami.8b14154
• Publication Date: 2018-09-19T13:49:31Z
• Authors: Chunyu Du; Mei Li; Min Cao; Shasha Song; Shichao Feng; Xipeng Li; Hong Guo; Baoan Li
• Keywords: Surface Modification

Thermal-conductive polymer composites have developed to be a hotspot in academic and industrial fields recently. Both efficient heat transport superior mechanical properties are of critical significance for high-performance thermal-conductive devices. In this paper, magnetic hexagonal boron nitride (mhBN) with excellent interfacial compatibility is successfully synthesized by dopamine co-functionalization, mhBN-poly(vinylidene fluoride) (mhBN-PVDF) combination high thermal conductivity outstanding property achieved due the integration interaction aligned filler architecture into one material's system. The increases from 0.35 W/(m K) 20 wt % pure BN-PVDF 0.82 after modification further 1.43 alignment. effective medium approximation model demonstrates that optimization mhBN orientation decrease resistance two major factors enhancement conductivity. Moreover, mhBN-PVDF also exhibit tensile strength (168.5 MPa at 15 content) impact (20-30 kJ/m2). significantly enhanced result exchange ability durability test, which important potential application industry.