官能化氧化石墨烯复合薄膜的制备与性能研究  

Preparation and performance of functionalized graphene oxide composite thin films

作　　者：刁择铭 罗文 王长宏[1] DIAO Ze-ming;LUO Wen;WANG Chang-hong(School of Materials and Energy,Guangdong University and Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《热固性树脂》2024年第6期20-25,共6页Thermosetting Resin

基　　金：国家自然科学基金(52176063)。

摘　　要：碳基填料/聚合物复合材料因柔韧度高、成本低、加工简单等优点成为目前柔性电热元件的研究重点之一。但碳基填料在聚合物基体中的分散性仍然是其在复合薄膜应用中的难点。本研究制备了对苯二胺官能化氧化石墨烯(PGO)并采用溶液浇铸法制备了不同PGO添加量的聚氨酯(PU)/超级导电炭黑(SP)/PGO复合薄膜,采用XPS光电子能谱仪、微观结构分析、电导率、热导率及电热性能测试研究了PGO和复合薄膜的结构及性能。结果表明:PGO和SP均匀地分散在聚氨酯中,PGO添加质量分数为5%时,复合薄膜综合性能最优。PGO的引入提高了复合薄膜的热导率和电导率,进而提升其最高发热温度和面内温度均匀性。该薄膜作为电热元件可以通过调节施加功率来控制其发热温度,具有快速温度响应、高电热转化效率以及良好的面内温均性。The carbon-based filler/polymer composites are currently one of the research focuses for flexible heating elements due to their high flexibility,low cost,and simple processing.However,the dispersion of carbon-based fillers in the polymer matrix remains a challenge for their application in composite films.In this study,the p-phenylenediamine functionalized graphene oxide(PCO)was prepared and then the polyurethane(PU)/super conductive carbon black(SP)/PGO composite films with different PCO additions were prepared by solution casting method.The structure and properties of PGO and composite films were studied by XPS photoelectron spectroscopy,microstructure analysis and tests of electrical conductivity,thermal conductivity and electrothermal performance.The results showed that PGO and SP were uniformly dispersed in the polyurethane matrix.When the mass fraction of PGO was 5%,thecomprehensive performance of the composite film was the best.The thermal conductivity and conductivity of the composite film were improved by the introduction of PGO,thereby enhancing its maximum heating temperature and in-plane temperature uniformity.As electrical heating elements,ther heating temperature of the composite films can be controlled by adjusting the applied power,which has fast temperature response,high electric thermal conversion efficiency,and good in-plane temperature uniformity.

关 键 词：官能化石墨烯 超级导电炭黑 复合薄膜 电热性能 面内温均性 

分 类 号：TB333.23[一般工业技术—材料科学与工程] O613.71[理学—无机化学]