We propose a new fabrication method of high thermally conductive epoxy composites for 3 D printing technology, which is based on a thermosetting epoxy system containing graphene nanoplate (GNP) as an IR-absorbing material. Firstly, we developed highly heat-dissipating inks based on bisphenol A diglycidyl ether (DGEBA) type epoxy resins containing graphene nanoplate (GNP) which was used as a heat dissipating filler and, simultaneously, an IR-absorbing material for heat induced rapid curing of printed layer. h-BN was also added as a heat dissipating filler in order to increase the thermal conductivity and to decrease the electrical conductivity of the composite. Secondly, by using a micro dispenser equipped with an IR laser, 2D/3D line patterns of thermally conductive epoxy composites were printed and cured in-situ. Thermal and electrical conductivities of the resulting composites were discussed with respect to the resin compositions and the irradiation conditions. The highest thermal conductivity of 2.77 W/m·K was achieved when the contents of GNP and h-BN were 15.0 and 20.0 phr, respectively.

中文翻译：

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用于二维/三维打印技术的红外激光照射固化高导热环氧复合油墨

我们提出了一种用于 3D 打印技术的高导热环氧树脂复合材料的新制造方法，该方法基于包含石墨烯纳米板 (GNP) 作为红外吸收材料的热固性环氧树脂系统。首先，我们开发了基于双酚 A 二缩水甘油醚 (DGEBA) 型环氧树脂的高散热油墨，其中含有石墨烯纳米板 (GNP)，用作散热填料，同时，还开发了一种用于热诱导快速固化的 IR 吸收材料。印刷层。还添加了 h-BN 作为散热填料，以增加复合材料的热导率和降低电导率。其次，通过使用配备有红外激光器的微型分配器，在原位印刷和固化导热环氧树脂复合材料的 2D/3D 线条图案。就树脂组合物和辐照条件讨论了所得复合材料的热导率和电导率。当 GNP 和 h-BN 的含量分别为 15.0 和 20.0 phr 时，最高热导率达到 2.77 W/m·K。