苯并噁嗪/氧化石墨烯导热复合材料的制备与性能研究

doi:10.19491/j.issn.1001-9278.2018.09.013

中国塑料 ›› 2018, Vol. 32 ›› Issue (09): 78-84.DOI: 10.19491/j.issn.1001-9278.2018.09.013

苯并噁嗪/氧化石墨烯导热复合材料的制备与性能研究

孟献瑞¹,陈蓼璞²,高秀秀¹,朱维维¹,张文凯¹,房晓敏³

1. 河南大学
2. 开封市教育技术装备管理中心
3. 河南大学化学化工学院

收稿日期:2018-04-11 修回日期:2018-05-27 出版日期:2018-09-26 发布日期:2018-10-25

Study on Preparation and Performance of Thermal Conductive Graphene Oxide/ Polybenzoxazine Composites

Received:2018-04-11 Revised:2018-05-27 Online:2018-09-26 Published:2018-10-25

摘要/Abstract

摘要： 以双酚A、3氨丙基三乙氧基硅烷和多聚甲醛为原料，通过曼尼希反应合成了氨基硅氧烷功能化苯并嗪（B-TES）;将B-TES引入双酚A苯胺型苯并嗪（BA-a）与氧化石墨烯（GO）组成的复合体系中，通过傅里叶变换红外光谱仪、差示扫描量热仪和旋转流变仪研究了复合体系的热固化过程；激光导热仪测试BA-a/GO/B-TES复合材料的热导率。结果表明，当GO/B-TES添加量从1 %（质量分数，下同）增大到6 %时，复合材料的热导率从0.29 W/（m·K）增大到0.56 W/（m·K）；采用有效介质模型计算GO与聚合物之间的界面热阻（Rb），发现B-TES能够使Rb由150×10-9 m2·K/W降低至130×10-9 m2·K/W；BA-a/GO/B-TES复合材料还表现出低表面能、高热稳定性的特性。

Abstract: Silane-functional benzoxazines (B-TES) were synthesized by a Mannich condensation method using aminopropyltriethoxysilane, bisphenol.A and paraformaldehyde as precursors. The resulting B-TES was introduced into the composite system containing the graphene oxide (GO) and bisphenol-A-aniline-based monomeric benzoxazine (BA-a), and then the thermal curing process of this composite system was investigated by Fourier-transform infrared spectroscopy, differential scanning calorimetry and rheological analysis. The thermal conductivity of poly(BA-a/B-TES)/GO composites were measured with a “laser flash” technique. The results indicated that the thermal conductivity increased from 0.29 W/（m·K） to 0.56 W/（m·K） when the content of GO/B-TES increased from 1 wt % to 6 wt %. The thermal boundary resistance (Rb) between the GO and poly(BA-a) matrix was theoretically predicted according to the Maxwell-Garnett effective medium approximation, and the calculated Rb decreased from 150×10-9 m2· K/W to 130×10-9 m2· K/W due to the bridge connection of the B-TES. In addition, the poly(BA-a/B-TES)/GO composites also exhibited a high thermal stability and low surface energy.

孟献瑞陈蓼璞高秀秀朱维维张文凯房晓敏. 苯并噁嗪/氧化石墨烯导热复合材料的制备与性能研究[J]. 中国塑料, 2018, 32(09): 78-84.

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苯并噁嗪/氧化石墨烯导热复合材料的制备与性能研究

Study on Preparation and Performance of Thermal Conductive Graphene Oxide/ Polybenzoxazine Composites

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