诱导相分离 BNNS/PES/EP 复合材料制备及其热物性研究.

In this paper, boron nitride nanosheets (BNNS) were prepared by liquid phase mechanical stripping method and the double modified boron nitride nanosheets (KDBNNS) were prepared by silane coupling agent covalent modification and dopamine non-covalent modification. The reaction induced phase separation was used to distribute KDBNNS at the interface of epoxy resin (EP) and polyether sulfone (PES) to form a thermal conductive pathway. KDBNNS/PES/EP composites were prepared and characterized by Fourier transform infrared spectroscopy analysis, differential scanning calorimetry analysis (DSC), thermal weight loss analysis (TGA), and confocal scanning microscopy. It is observed that BNNS constructs a three-dimensional thermal conductive path in the ternary composite. Studies have shown that when the mass ratio of BNNS is only 3%, the thermal conductivity of the composite reaches 0.394 W/ (m·K), which is 103% higher than pure epoxy 0.194 W/ (m·K) [ABSTRACT FROM AUTHOR]