Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, 35 Qinghua East Road, Haidian District, Beijing 100083, P. R. China.
Dalton Trans. 2018 Oct 30;47(42):14827-14840. doi: 10.1039/c8dt02949k.
Layered double hydroxides (LDHs) are a new type of inorganic flame retardant additive for polymer nanocomposites. Although their unique structural properties and tunable chemical compositions make them highly promising, it has been noticed that on their own, LDHs can hardly fulfill all the requirements for commercial applications. In recent years, the application of LDHs together with other synergistic additives has been proposed as a new route for obtaining highly efficient flame retardant polymer nanocomposites. It is believed that the synergistic additives can overcome the shortcomings of LDHs. As great progress has been made in this field so far, we believe that a timely review is warranted. Thus, in this contribution, the synergistic effect of LDHs with other flame retardant additives including (1) phosphorus-containing compounds, (2) graphene and carbon compounds, (3) intumescent flame retardants, (4) magnesium hydroxide, (5) borate-containing compounds, and (6) some other flame retardant compounds will be critically reviewed. For each type of additive, the synergistic mechanism with LDHs, and their performance on both flame retardancy and thermal stability will be discussed. We believe that this work will inspire and guide researchers from a wide range of backgrounds and help to pave the way for major breakthroughs in both fundamental studies and industrial applications in this field.
层状双氢氧化物（LDHs）是一种新型的无机阻燃剂添加剂，可用于聚合物纳米复合材料。尽管它们独特的结构特性和可调的化学组成使它们具有很高的应用前景，但人们已经注意到，单独使用 LDHs 很难满足商业应用的所有要求。近年来，人们提出将 LDHs 与其他协同添加剂一起应用，作为获得高效阻燃聚合物纳米复合材料的新途径。人们认为协同添加剂可以克服 LDHs 的缺点。由于在这一领域已经取得了很大的进展，我们认为有必要进行及时的综述。因此，在这篇综述中，我们将重点讨论 LDHs 与其他阻燃添加剂（1）含磷化合物、（2）石墨烯和碳化合物、（3）膨胀型阻燃剂、（4）氢氧化镁、（5）含硼化合物以及（6）其他一些阻燃化合物的协同效应。对于每种类型的添加剂，我们将讨论其与 LDHs 的协同机制，以及它们在阻燃性和热稳定性方面的性能。我们相信，这项工作将激发和指导来自广泛背景的研究人员，并为该领域的基础研究和工业应用方面的重大突破铺平道路。
