合成温度对石墨烯/Ca(OH)_(2)纳米复合材料制备及性能的影响  

Effect of synthesis temperature on the preparation and properties of graphene/Ca(OH)_(2)nanocomposite

作　　者：王锋 卢嘉兵 刘文秀 顾耀奇 魏书亚 WANG Feng;LU Jiabing;LIU Wenxiu;GU Yaoqi;WEI Shuya(National Centre for Archaeology,Beijing 100013,China;Beijing Stone Carving Art Museum,Beijing 100044,China;Beijing Wetech Environmental Sci-Tech Co.,Ltd.,Beijing 100083,China;Institute for Cultural Heritage and History of Science&Technology,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]国家文物局考古研究中心,北京100013 [2]北京石刻艺术博物馆,北京100044 [3]北京为康环保科技有限公司,北京100083 [4]北京科技大学科技史与文化遗产研究院,北京100083

出　　处：《复合材料学报》2025年第3期1601-1609,共9页Acta Materiae Compositae Sinica

基　　金：北京市文物局科研课题(11000024T000002788106)。

摘　　要：纳米Ca(OH)_(2)对风化后的大理岩石质文物有良好的加固效果,在较低温度下得到性能优异的纳米颗粒对其成本降低和推广应用有重要意义。本研究通过调节反应温度,引入石墨烯量子点,制备得到了一系列石墨烯/Ca(OH)_(2)纳米复合材料,并采用TEM、激光粒度仪、Raman、FTIR、UV-Vis、XRD、SEM、分光测色仪、压汞仪、硬度计、超声波测速仪等对材料形貌组成、相对动力学稳定性、碳酸化反应和模拟样品加固性能进行分析研究。结果表明反应温度的适当升高有利于石墨烯与Ca(OH)_(2)的复合,以及纳米颗粒粒径的减小,在80℃下得到的产物相对动力学稳定性、碳酸化速率和加固性能较好;随着温度继续升高,90℃及以上所制备的材料转变为球状结晶,而且碳酸化后部分会保持为亚稳态球霰石物相,并未表现出更好的加固性能。Graphene/Ca(OH)_(2)nanocomposite has a good consolidation effect on weathered marble artifacts.Preparation of this kind of material with excellent performance at lower temperatures plays an important role on its cost reduction and popularization.In this study,a series of graphene/Ca(OH)_(2)nanocomposites were prepared by adjusting the reaction temperature and addition of graphene quantum dot.The morphology,composition,relative kinetic stability,carbonation reaction and reinforcement property were studied by TEM,laser particle analyzer,Raman,FTIR,UV-Vis,XRD,SEM,colorimeter,mercury injection apparatus,leeb hardness tester and ultrasonic tester.The results showed that the appropriate increase of reaction temperature was conducive to the improvement of combination and the reduction of nanoparticle size.The products obtained at 80℃exhibited good relative kinetic stability,fast carbonation rate and excellent reinforcement property,while the materials prepared at 90℃and above grew into spherical crystals and did not show better properties,may due to the influence of calcium hydroxide transform to vaterite.

关 键 词：石墨烯 纳米材料 氢氧化钙 加固 石墨烯量子点 

分 类 号：TB332[一般工业技术—材料科学与工程]