水滑石的制备及其阻燃性能研究进展

由于聚合物受热易燃烧,常存在火灾风险,通常需要引入阻燃剂来提升其阻燃性能。水滑石(LDHs)因其无卤、无毒且抑烟性能优异,在阻燃领域受到了越来越多的关注。基于此,对LDHs的结构、制备方法及其阻燃机理进行了介绍,特别是对提高LDHs阻燃性能的途径即从层板阳离子掺杂、层间阴离子插层和表面改性进行了重点综述,并对不同结构LDHs的阻燃机理及阻燃性能进行了总结,最后展望了LDHs作为阻燃剂今后的发展趋势。

Research progress on preparation and flame retardant properties of layered double hydroxide

Polymer is easy to burn when heated, which may result in fire disaster. Thus, it is necessary to improve the flame retardant performance of polymer by employing flame retardants. Layered double hydroxide (LDHs) has attracted more and more attention in the field of flame retardant due to its halogen-free, non-toxic and excellent smoke suppression performance. In this paper, the structure, preparation methods, and flame retardant mechanism of LDHs were summarized. In particular, the methods to improve the flame retardant properties of LDHs, including cationic doping of laminate, interlayer anion intercalation, and surface modification, were emphatically reviewed. Moreover, the flame retardant mechanism and properties of LDHs with different structure were concluded. At last, the development trend of LDHs as flame retardant in the future has prospected. The aim of this paper is to provide guidance for the development of LDHs flame retardants and related researchers.