碲化铋-碳纤维/智能水泥基材料微结构研究  

Study on Microstructure of Bismuth Telluride Carbon Fiber/Smart Cement-based Materials

作　　者：左俊卿 ZUO Junqing(Shanghai Construction Group Co.,Ltd.,Shanghai 200080,China;Shanghai Engineering Research Center of Super High Rise Building Intelligent Construction,Shanghai 200080,China)

机构地区：[1]上海建工集团股份有限公司,上海200080 [2]上海超高层建筑智能建造工程技术研究中心,上海200080

出　　处：《建筑施工》2022年第5期1006-1009,共4页Building Construction

基　　金：国家自然科学基金青年项目(51508320);上海市自然科学基金资助项目(21ZR1428100);上海市人才发展资金资助项目(2020053);上海市工业互联网创新发展专项(2020-GYHLW-01008);上海建工集团基础研究类项目(21JCYJ-11)。

摘　　要：采用扫描电子显微镜和三维视频显微镜2种图像分析方法,研究了不同碲化铋掺入方式的碲化铋-碳纤维/智能水泥基材料微结构。研究结果表明,碲化铋微观形貌中呈近似圆形的薄片状,其加入水泥基材料能填充水泥基体孔洞,密实水泥基体结构。碲化铋因掺入方式的不同而分布于水泥基体中、分界面处或分界面两侧。碳纤维在整个水泥基材料在空间上形成连续导电网络。在水泥基材料中复掺碲化铋与碳纤维,弥补了单一增强体系的不足,可优化水泥基热电、导电等特性。The microstructure of bismuth telluride carbon fiber/smart cement-based materials with different bismuth telluride incorporation modes was studied by scanning electron microscope and three-dimensional video microscope.The results show that the microstructure of bismuth telluride is approximately circular and thin,and adding cement-based materials can fill the holes in the cement matrix and compact the cement matrix structure.Bismuth telluride is distributed in the cement matrix,at the interface or on both sides of the interface due to different mixing methods.The carbon fiber forms a continuous conductive network in the space of the whole cement-based material.Adding bismuth telluride and carbon fiber into cement-based materials can make up for the deficiency of a single reinforcement system and optimize the characteristics of cement-based thermoelectricity and conductivity.

关 键 词：碲化铋 碳纤维 智能 水泥基材料 微结构 

分 类 号：TU528[建筑科学—建筑技术科学]