Phenol-formaldehyde resin (PF) is one of traditional synthetic polymer materials, which has been widely used in many fields. How to improve its heat resistance is always a hot spot. Thermal modifying methods as well as their modifying efficiency are introduced. At the same time, a proposal is put forward to developing a modifying combination. The combination can not only improve the stability of the structure and properties of PF at 400-700℃ , but also stabilizes the one at low, middle and high temperature with a optimized heat-treated process.%酚醛树脂是一种传统的合成树脂,在诸多行业有着广泛的应用.提高酚醛树脂的耐热性一直是业内研究的热点.系统介绍了国内外提高酚醛树脂耐热性所采取的改性方法,以及所取得的研究成果.提出了今后酚醛树脂耐热改性的主要研究方向是进一步提高PF在400～700℃时的结构热稳定性,并开发出良好的改性剂组合、优化热处理工艺,使酚醛树脂分别在低、中、高温区均具有较稳定的结构与性能.
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