NEW ENVIRONMENTAL FUNCTIONAL MATERIALS |
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Research Status of Environmental Foam Extinguishing Agent for Liquid Fire |
QI Lei1, JIAO Jinqing2, XIONG Jing1, LAI Kezhen1, WEI Yuechang1,*
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1 State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing 102249, China 2 SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao 266071, Shandong, China |
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Abstract Traditional aqueous film-forming foam (AFFF) has good extinguishing performance and is the best extinguishing agent for liquid fire extinguishing at present. However, its components involve perfluorooctane sulfonic acid (PFOS) and other substances that are difficult to decompose, which seriously harm the environment. With the improvement of environmental protection policies and regulations in various countries, it is the general trend that PFOS will be replaced comprehensively in the future. In recent years, many researchers at home and abroad are also actively developing environment-friendly foam extinguishing agents. The current research and development mainly include two directions. One is to research and develop environment-friendly foam extinguishing agent containing fluorine, which uses short-chains fluorocarbon surfactant to replace long-chains fluorocarbon surfactant, meeting the demand of fire extinguishing while reducing the harm to the environment. Although the environmental concerns have been solved for the time being, it has a short service life, and there is a lack of direct evidence of being environmentally friendly in the long run. Another is the development of fluorine-free environment-friendly foam extinguishing agent, mainly using hydrocarbon surfactants and other surfactants for compounding, among which silicone surfactants is the most widely used. In this paper, the research progress of environment-friendly foam extinguishing agents used in liquid fire in recent years is summarized, and the fluorine containing and fluorine-free foam extinguishing agents are introduced, respectively. The research status and problems of various environment-friendly foam extinguishing agents are summarized, and their development prospects are analyzed and discussed reasonably. It is expected to provide reference for prepa-ring foam extinguishing agents with better effect, better performance and no harm to the environment.
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Published:
Online: 2022-10-26
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Fund:Technology Development Program of SINOPEC (321101), the National Natural Science Foundation of China (21972166), Beijing Natural Science Foundation (2202045), National Key Research and Development Program of China (2019YFC1907600). |
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