氧化石墨烯的修饰及其在硅橡胶中的应用<br /><br />-中国材料进展

文章信息/Info

Title:: Modification of Graphene Oxide and Its application in Silicone Rubber

作者:: 王华兰1; *; 刘日胜1; 胡应乾1; 邬继荣1; 张国栋1; 周旭峰2; 刘兆平2; (1. 杭州师范大学，有机硅化学及材料技术教育部重点实验室浙江杭州 311121

(2. 浙江省石墨烯应用研究重点实验室，中国科学院宁波材料技术与工程研究所，浙江宁波 214122)

Author(s):: WANG Hualan 1; *; LIU Risheng 1; HU Yingqian 1; Wu Jirong1; Zhang Guodong1; ZHOU Xufeng 2; LIU Zhaoping 2; （1.? Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education，Hangzhou Normal University, Hangzhou 311121, China）

（2.? Key Laboratory of Graphene Technologies and Applications of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang 315201, China）

Keywords:: graphene oxide; silicone; silicone rubber; adhesive; mechanical properties

摘要:: 科技的飞速发展为有机硅新材料带来了新的机遇和挑战。为了改善目前有机硅黏合剂的力学强度和黏合性能，以适应不断发展变化的工业应用新需求，本文设计制备了一种全新的功能性氧化石墨烯/SiO2（GOS）复合填料，并制备了相应的GOS/室温硫化硅橡胶（RTV SR）复合材料。研究了GOS对硅橡胶复合材料力学性能的影响，并考查了硅橡胶复合材料对基材金属铝的黏合性能。首先采用正硅酸四乙酯和氧化石墨烯（graphene oxide, GO）为原料，用原位合成法将纳米SiO2修饰到GO的片层上，制备了跨维度的新型功能填料GOS。然后在无溶剂条件下将GOS引入到硅橡胶基体中，经固化后制备了具有良好力学性能和黏合功能的硅橡胶复合材料。研究结果表明：在室温下即能实现SiO2对GO的有效修饰，修饰后的GO更易于在硅橡胶中均匀分散，所得硅橡胶复合材料的力学强度和黏合性能均得到有效提升。

Abstract:: The rapid development of science and technology has brought new opportunities and challenges for new silicone materials. In order to improve the mechanical strength and adhesive properties of the present silicone adhesive and to meet the new requirements of evolving industrial applications, a new functional graphene oxide/SiO2 (GOS) filler and the corresponding GOS/room temperature vulcanized silicone rubber (RTV SR) composites were prepared. The effects of GOS on the mechanical properties of silicone rubber composites were investigated, and the adhesion of silicone rubber composites to the aluminum substrate was also investigated. Firstly, tetraethyl orthosilicate and GO were used as raw materials, and the in-situ synthesis method was used to introduce the nano-SiO2 onto the GO layer to prepare GOS. Then GOS was integrated into the silicone rubber matrix under solvent-free conditions, and the silicone rubber composite with good mechanical properties and adhesion was prepared by vulcanization. The results show that SiO2 can effectively modify GO at room temperature, and the modified GO is more easily dispersed in the silicone rubber. The mechanical strength and adhesive properties of the obtained silicone rubber composite thus increase significantly.