新型薄壁泡沫炭复合材料的制备及性能研究  

Study on preparation and performance of a novel thin-walled carbon foam composite

作　　者：汪洋 林喆[1] 秦志宏[1] 刘嘉恒 李双双 Wang Yang;Lin Zhe;Qin Zhi-hong;Liu Jia-heng;Li Shuang-shuang(School of Chemical Engineering,China University of Mining and Technology,Jiangsu Xuzhou 221116,China)

机构地区：[1]中国矿业大学化工学院,江苏徐州221116

出　　处：《炭素技术》2021年第5期34-38,共5页Carbon Techniques

基　　金：国家自然科学基金项目(51674260,21706276)。

摘　　要：以童亭原煤经全组分分离所得的疏中质组为原料,蒙脱土为添加剂,通过简单的炭化过程制备了蒙脱土/泡沫炭复合材料。其微观结构与2种典型泡沫炭微观结构不同,是一种新型的球形泡薄壁结构。研究蒙脱土添加量对泡沫炭复合材料的微观结构、抗压强度和隔热性能的影响。结果表明蒙脱土与原料间具有良好的相容性,所制备的泡沫炭孔隙率降低,体积密度增加,抗压强度显著提升,热导率下降,200℃下热导率仅为0.069 W/(m·K),是一种良好的轻质隔热材料。Using the loose medium component as raw material which was separated from Tongting raw coal by all components group separation, montmorillonite as additive, the montmorillonite/carbon foam composite material is prepared through a simple carbonization process. The microstructure of the obtained composite, which is different from those of the two typical foamed carbon, is a new type of spherical foam thin-walled structure. The effect of montmorillonite addition on the microstructure, compressive strength and thermal insulation properties of carbon foam composites is studied. The results show that montmorillonite has good compatibility with raw materials. The prepared carbon foam has reduced porosity, increased bulk density, significantly improved compressive strength,and decreased thermal conductivity. The thermal conductivity at 200 ℃ is only 0.069 W/(m·K), indicating that the prepared carbon foam composite is a good light-weight thermal insulation material.

关 键 词：薄壁泡沫炭 蒙脱土改性 轻质隔热 

分 类 号：O613.7[理学—无机化学] TB34[理学—化学]