文章通过在酚醛树脂合成中共聚聚己二酸乙二醇酯二醇(PEA)改性酚醛树脂泡沫,从而使酚醛树脂泡沫达到低酸、增韧的效果。同时,考察了PEA对酚醛树脂泡沫物理以及力学性能的影响。实验结果表明:酚醛树脂与PEA的共聚显著改善了酚醛泡沫的韧性,随着PEA含量的增加,泡沫的弯曲位移、压缩强度和冲击强度均得到提升,p H值增加,酸性得到明显的改善。 In this paper, phenolic resin foam is modified to achieve low acidity and toughening effect by copolymerizing polyethylene adipate glycol (PEA) modified phenolic resin foam in phenolic resin synthesis. At the same time, the effects of PEA on the physical and mechanical properties of phenolic foam were investigated. The experimental results show that the copolymerization of phenolic resin and PEA significantly improves the toughness of phenolic foam. With the increase of PEA content, the flexural displacement, compressive strength and impact strength of foam increase. The value of p H increases and the acidity obviously improves.