Abstract: In recent year, nylon (PA) is widely used in people's daily lives. With the rapid development of electronics, aerospace and other special industries, the usage environment of PA is becoming stricter and stricter. Therefore, the overall performances specially the flame retardant performance of PA need to be improved and how to improve the flame retardancy of PA6 is attracting more and more attention. It is important that the flame retardancy should be improved without loss in mechanical performance. At present, the flame retardancy of PA is mainly be achieved by incorporating two types of flame retardants: (Ⅰ) additive flame retardants; (Ⅱ) reactive flame retardants. Among the various additive flame retardants for PA, such as: halogen-containing flame retardants, phosphorus-containing flame retardants, nitrogen-containing flame retardants and inorganic flame retardants, etc., the halogen-containing flame retardants show high flame retardancy, but bring pollution to the environment. The dosage of metal hydroxide is generally high and will cause loss in mechanical properties. For phosphorus-containing and nitrogen-containing flame retardants, the complex preparation process and the poor compatibility with polymer matrix have to be considered. Therefore, it is necessary to develop novel flame retardants with high efficiency, little pollution and low toxicity. With the increasing attention to environmental protection, inorganic flame retardants are widely used to improve the flame retardancy of polymer materials due to their low pollution, low toxicity, good smoke suppression effect. As one of the most important and abundant inorganic fillers, antimony trioxide (Sb2O3) has been employed as flame retardants for polymer materials due to their special structure and composition. Besides, Sb2O3 can be incorporated into polymer materials together with other flame retardant as a synergist, widely used in plastic products, rubber and other polymer materials specially PA materials. In order to further improve the flame retardancy of PA materials, various Sb2O3 have been prepared by different methods and introduced into the PA system. The flame retardant mechanisms of the prepared PA/Sb2O3 composites are also explored. In this paper, the structure of Sb2O3 is firstly introduced. Several common preparation methods, including template method, chemical reduction method, hydrothermal method and precipitation method, are listed and compared. On this basis, the application of Sb2O3 as flame retardant additives in PA is emphatically described. According to the recent studies on flame retardant PA6/Sb2O3 composites, it is pointed out that the deve-lopment trend of Sb2O3 in PA6 mainly includes: (Ⅰ) reducing the amount of Sb2O3 by refining the particle size; (Ⅱ) improving the compatibility of Sb2O3 with polymer matrix through surface modification; (Ⅲ) compounding with halogen-free flame retardant; (Ⅳ) hybridization with other inorganic flame retardants.
作者简介: 孙吉,2020年6月毕业于黄冈师范学院,获得理学学士学位。现在何文涛教授的指导下进行研究,目前主要研究领域为阻燃聚合物纳米材料。何文涛,黄冈师范学院教授。2010年12月在武汉大学高分子化学与物理专业取得博士学位,2011—2018年在国家复合改性聚合物材料工程技术研究中心从事聚合物纳米复合材料的研发工作,并于2015年被评为研究员。2018年1月-6月作为访问学者于澳大利亚南昆士南大学从事阻燃聚合物纳米复合材料研究。近年来,在阻燃聚合物纳米复合材料领域发表论文20余篇,包括Progress in Materials Science、Composites Communications、Polymer Degradation and Stability和Polymers等。
孙吉, 何文涛. 三氧化二锑对尼龙阻燃性能的影响研究发展动态[J]. 材料导报, 2021, 35(Z1): 560-565.
SUN Ji, HE Wentao. Research Progress of the Influence of Antimony Troixide on the Flame Retardant Properties of Nylon. Materials Reports, 2021, 35(Z1): 560-565.