Lignin and aluminum flame retardant and preparation method and use thereof

Abstract

The invention provides lignin and aluminum flame retardant and a preparation method and use thereof. In the lignin and aluminum flame retardant, a lignin pyrolysis product is used as a skeleton, the parts where reaction active functional groups exist in a molecular chain are grafted with trivalent aluminum ions and are grafted with various flame-retarding inorganic acid groups and / or amino. Compared with the conventional phenolic aldehyde flame-retarding and thermal-insulation material, the flame retardant has a higher flame-retarding performance for high-flame-retardance groups such as phosphorous acid group, sulfonate, silicate, pyroantimonate, trivalent aluminum, polyamine and the like are introduced into the molecular chain by using the high-activity groups of the lignin to form the high-flame-retardance group aluminum salt and multivariant amine salt combined flame retardant. Due to the use of a large amount of low-cost natural macromolecular lignin, the prepared lignin and aluminum flame retardant and flame-retarding materials prepared thereof have high market competitive power.

Description

technical field [0001] The invention belongs to the technical field of preparation of flame-retardant thermal insulation materials, and in particular relates to a lignin-aluminum flame retardant, a preparation method and its application in flame-retardant thermal insulation materials. Background technique [0002] The fire performance of thermal insulation materials used in construction, aerospace and other industries directly affects people's lives and property safety. Especially since entering the 21st century, there have been more and more building fires, and the consequences have become more and more serious, bringing irreparable losses to the life and property of the country and the people (such as the fire at the new site of CCTV in 2009, the fire at the Shanghai teachers' dormitory in 2010, etc.) fire, etc.). Therefore how high-rise building fire prevention, heat preservation, protection environment and people's life and property have become worldwide problems. Rese...

AI Technical Summary

Problems solved by technology

According to reference 1: Wang Xiaoying, Bi Chengliang, Li Lili, Zhang Baogui, Research progress of new environmentally friendly flame retardants Tianjin Chemical Industry 2009, 23(1), 8-11 records, currently widely used foam materials such as polystyrene (PS) , polyvinyl chloride (PVC), polyurethane (PU), urea-formaldehyde resin (UF), foamed polyolefin and foamed epoxy resin (epoxy) have been used as thermal insulation materials, but because of their poor heat resistance, The production process is complicated, the mechanical properties are not high or the thermal conductivity is not low enough, and there are disadvantages such as easy combustion or smoke when burning, which limits its application in many fields (especially high-rise buildings, high temperature insulation, ultra-low temperature insulation materials, aviation industry, space insulation, etc. technology, etc.) (see Reference 1 for details: Wang Xiaoying, Bi Chengliang, Li Lili, Zhang Baogui, Research Progress of New Environmentally Friendly Flame Retardants Tianjin Chemical Industry 2009, 23(1), 8-11; Reference 2: Lu Haijun Ma Xiaoyan, Yan Hongxia, New Progress in Research on Phosphorus Flame Retardants, New Chemical Materials, 200129(12); Reference 3: Li Fusheng, Hu Xingqi, etc., Research Progress of Flame Retardant Polymer Materials and Their Flame Retardants, Application of Engineering Plastics, 2002, 30 (9) 56-59; Reference 4: Meng Xianyan, Tang Jianhua, Ye Ling, Li Zhongming, Research Status of Polyurethane Foam Flame Retardancy, Chemical Engineering and Equipment, 2008, May, 63-67; Reference 5: Liang Cheng, China's flame retardant Current status and development trend of fuel production, Progress in Fine Petrochemicals, 2001, 2(2), 38-41)

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