Boron nitride/multiwalled carbon nanotubes/carbon (BN/MWCNTs/C) networks were prepared via a rape pollen (RP) biological template assisted strategy. The highly thermally conductive epoxy resin (EP) composites were prepared by impregnating EP into the 3D BN/MWCNTs/C networks. Fourier transform infrared spectra and X-ray photoelectron spectroscopy analyses indicated that the successful modification of BN (m-BN) and the interaction between RP, carboxyl functionalized MWCNTs (c-MWCNTs) and m-BN. Scanning electron microscopy images clearly present the network morphology constructed by MWCNTs connected to m-BN. Thermogravimetric analyzer curves determine the mass concentration of m-BN in EP-based composites. The thermal conductivity (K) reached 1.84 W/(m·K) in the composites at a BN content of 21.3 wt%, displaying a significant enhancement of 868% compared with pure EP. The enhanced K is attributed to the effective connection of BN by the MWCNTs covered on the surface of RP. Meanwhile, the composites exhibit a tensile strength of 39.2 MPa, electrically insulating with a volume electrical resistivity about 9.17 × 10¹⁰ Ω cm and good flame retardancy.

氮化硼/多壁碳纳米管/碳（BN/MWCNTs/C）网络是通过油菜花粉（RP）生物模板辅助策略制备的。通过将 EP 浸渍到 3D BN/MWCNTs/C 网络中来制备高导热环氧树脂 (EP) 复合材料。傅里叶变换红外光谱和 X 射线光电子能谱分析表明 BN (m-BN) 的成功改性以及 RP、羧基功能化 MWCNTs (c-MWCNTs) 和 m-BN 之间的相互作用。扫描电子显微镜图像清楚地呈现了由连接到 m-BN 的 MWCNTs 构建的网络形态。热重分析仪曲线确定了基于 EP 的复合材料中 m-BN 的质量浓度。导热系数（K) 在 BN 含量为 21.3 wt% 的复合材料中达到 1.84 W/(m·K)，与纯 EP 相比显着提高了 868%。增强的K归因于覆盖在 RP 表面的 MWCNT 有效连接 BN。同时，复合材料的拉伸强度为 39.2 MPa，电绝缘，体积电阻率约为 9.17 × 10 ¹⁰  Ω cm，具有良好的阻燃性。