Enhanced thermal conductivity of functionalized-graphene/boron nitride flexible laminated composite adhesive via a facile latex approach
Enhanced thermal conductivity of functionalized-graphene/boron nitride flexible laminated composite adhesive via a facile latex approach
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DOI：
10.1016/j.compositesa.2017.03.033
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发表时间：
2017-08
影响因子：
8.7
通讯作者：
Zheng Su;Hua Wang;X. Ye;Konghu Tian;Weiqi Huang;Chao Xiao;Xingyou Tian
中科院分区：
文献类型：
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作者：
Zheng Su;Hua Wang;X. Ye;Konghu Tian;Weiqi Huang;Chao Xiao;Xingyou Tian
利用二次作用力和亲水性差，通过胶体共混和自组装技术制备了功能化石墨烯(f-G)层和六方氮化硼(h-BN)层相结合的柔性纤维增强层状复合材料胶粘剂。在该体系中，以聚丙烯酸2-乙基己酯(P2EHA)为聚合物基质，通过自组装技术将功能化的石墨烯与另一层类似交联剂或粘结剂的六方氮化硼连接在一起。刘易斯酸碱(δ+−δ−)相互作用和π-π堆积改善了填料与聚合物基质之间的相容性。通过扫描电子显微镜、拉曼光谱和X射线衍射仪的研究，证实了柔性f-G/h-BN层状复合胶粘剂的制备是有效和成功的。这种定向堆积和层叠结构导致了更高的面内导热系数(∼4.20W/m·K)和通过平面的方向绝缘，以及良好的粘接性能。该方法对环境友好，操作简便，具有工业实际应用的潜力。
Flexible fiber-reinforced laminated composite adhesive combining with functionalized-graphene (f-G) layer and hexagonal boron nitride (h-BN) layer was prepared by colloid-blending and self-assembly technology with the assistance of the secondary force and hydrophilic difference. In this system, poly (2-ethylhexyl acrylate) (P2EHA) as the polymer matrix linked the layer of functionalized-graphene and another layer of hexagonal boron nitride like the cross-linker or adhesive via self-assembly technology. Lewis acid-base (δ+−δ−) interaction and π-π stacking improved the compatibility between the filler and the polymer matrix. The effective and successful fabrication of flexible f-G/h-BN laminated composite adhesive has been confirmed by SEM, Raman spectroscopy, and XRD investigations. The oriented stacking and laminated structure resulted in much higher in-plane thermal conductivities (∼4.20 W/m K) and insulation in the direction through the plane and good adhesive properties. The procedure was environmental friendly, easy operation, and potential for the practical application in industry.