高分子材料的可燃性是工业应用中需要解决的关键问题。赛克（THEIC）是一种由C、N、O、H组成的含有三嗪环结构精细化工材料，具有优异的化学稳定性、热稳定性及成炭效果，常作为膨胀型阻燃剂（IFR）的碳源使用。然而，THEIC存在加工过程不稳定、单独阻燃效果不佳、水溶性高和易迁移等缺陷，限制其进一步发展。文章介绍THEIC的物化性质和制备方式，着重阐述THEIC在聚丙烯、聚乙烯、环氧树脂等高分子材料中的阻燃应用，特别是对THEIC的分子结构设计和形态变化、阻燃机理以及阻燃材料的性能进行系统的论述。最后，展望THEIC未来的发展方向，指出开发新型改性方式、研究高效阻燃配方、提升加工稳定性、开发纳米复配阻燃剂、扩大阻燃应用领域和多功能化应用是其主要发展方向。

The flammability of polymer materials is a crucial problem to be solved in industrial applications. THEIC, a fine chemical material composed of C, N, O and H containing azine ring structure, is endowed with excellent chemical stability, thermal stability and carbonization effect, and is often used as the carbon source of intumescent flame retardant (IFR). However, THEIC has defects such as unstable processing, poor flame retardant effect alone, high water solubility, and easy migration, which limit its further development. Therefore, the physicochemical properties and preparation methods of THEIC are introduced in this paper, and the flame retardant application of THEIC in polypropylene, polyethylene, epoxy resin and other polymer materials is emphasized. In particular, the molecular structure design and morphological changes of THEIC, flame retardant mechanism and the performance of flame retardant materials have been systematically discussed. Finally, the future development direction of THEIC is prospected, pointing out that developing new modification methods, researching efficient flame retardant formulations, improving processing stability, developing nanocomposite flame retardants, expanding flame retardant application fields and multifunctional applications are the main development directions of THEIC in the future.