Preparation and Properties of Polytriazole Resin/Boron Nitride Nanosheet Composites
ZHANG Yu1, LI Yujing2, WAN Liqiang1,*, HUANG Farong1, LIU Zuozhen3
1 Key Laboratory of Specially Functional Polymeric Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 210046, China 2 Shanghai Satellite Equipment Research Institute, Shanghai 201100, China 3 Huachang Polymer Co., Ltd., East China University of Science and Technology, Shanghai 201100, China
Abstract: Amino- and hydroxyl-functionalized boron nitride nanosheets (BNNS-AH) were prepared in high yield by dry ball milling using hexagonal boron nitride (h-BN), sucrose and urea. The thickness of the BNNS-AH is about 1.5 nm, the number of layers is 4—6, the average diameter is about 1.5 μm, the yield can reach 91.0%, the stable dispersion concentration in water can reach 30 mg/mL. Then polytriazole resin/boron nitride nanosheet (PTA resin/BNNS-AH)composites were prepared by blending method. And the effect of BNNS-AH addition on PTA resin/BNNS-AH composites was studied. The results show that compared with the pure PTA resin, the Tg, Td5 and thermal conductivity of the composite are significantly improved. When the mass fraction of BNNS-AH is 3.0wt%, the Tg of the composite reaches 243 ℃, an increase of 32 ℃; Td5 reaches 362 ℃, an increase of 19 ℃; the thermal conductivity is 0.33 W·m-1·K-1, an increase of 64.5%.
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2024, Vol. 38 
