抑烟阻燃微胶囊开发与性能验证  

Development and Performance Verification of Smoke Supression and Flame Retardant Microcapsules

作　　者：李威翰 周波超 吴鸿飞 韩武松[3] 王超[1] Li Weihan;Zhou Bochao;Wu Hongfer;Han Wusong;Wang Chao(Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China;Hebei Guangtai Road and Bridge Engineering Corporation Co.,Ltd.,Handan 056002,China;Handan Municipal Expressway Construction and Management Center,Handan 056002,China)

机构地区：[1]北京工业大学城市建设学部,北京100124 [2]河北光太路桥工程集团有限公司,河北邯郸056002 [3]邯郸市交通运输局高速公路建设管理中心,河北邯郸056002

出　　处：《市政技术》2024年第5期8-16,共9页Journal of Municipal Technology

基　　金：邯郸市科学技术研究与发展计划项目(21422093008、21422111084)。

摘　　要：沥青路面施工过程烟气污染严重,且服役过程存在火灾风险隐患,严重危害了行车安全。因此,抑烟阻燃型沥青路面材料研发势在必行。传统的抑烟阻燃路面是将抑烟剂与阻燃剂分别添加到沥青混合料中,其过程繁多,且过量的抑烟剂与阻燃剂会导致沥青路面路用性能下降,不利于路面的长期服役。而采用微胶囊技术则可以兼顾抑烟与阻燃性能。其中,微胶囊外壳采用具有良好抑烟性能的膨胀石墨与活性炭,芯材采用具有阻燃性能优异的氢氧化镁与蒙脱土。由此重点对沥青烟气的抑制效果进行了研究,并发现当微胶囊掺量为3%时,对烟气中的CO、VOCs抑制效果最佳,抑制率可达49%和40%。由于微胶囊拥有抑烟外壳,在抑制烟气的同时,还可以有效防止芯材泄漏,从而保护了沥青路面的路用性能,降低了多种抑制剂对沥青路面的损害。The smoke pollution of asphalt pavement is serious during construction.There is hidden danger of fire risk in service,which seriously endangers driving safety.Therefore,it is imperative to develop smoke suppression and fire retardant asphalt pavement materials.The smoke suppressant and flame retardant are added to asphalt mixture respectively on traditional smoke suppression and flame retardant pavement which has many processes,and exces-sive smoke suppressant and flame retardant will cause the deterioration of pavement performance,which is not con-ducive to the long-term service of the pavement.The microcapsule technology can balance both smoke suppression and flame retardant properties.The shell of the microcapsule was made of expanded graphite and activated carbon with good smoke suppression properties.The core material was made from magnesium hydroxide and montmorillonite with excellent flame retardant properties.In this paper,a major study on the suppression effect of asphalt smoke was conducted.It was found that when the content of microcapsules was 3%,the suppression effect of CO and VOCs in smoke was the best with the susppresion rate of 49%and 40%.Because of the smoke suppression shell,it can restrain the smoke and prevent the core material from leaking effectively to protect the pavement performance and reducing the damage of various inhibitors to the asphalt pavement.

关 键 词：道路工程 微胶囊 抑烟性能 阻燃性能 路用性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]