采用硅橡胶对酚醛泡沫进行增韧改性,以改善其掉渣性。通过SEM分析、压缩强度、掉渣率、吸水率检测等手段,分析研究了硅橡胶改性酚醛泡沫结构与性能。结果表明:硅橡胶改性酚醛泡沫的掉渣性得到明显改善;随着硅橡胶用量的增加,改性酚醛泡沫的表观密度逐渐提高,泡沫的压缩强度也逐渐增强;当硅橡胶用量低于10%时,随着硅橡胶用量的增加,改性酚醛泡沫的吸水率逐渐下降。 The use of silicone rubber phenolic foam toughening modified to improve the deslagging. Through SEM analysis, compressive strength, dross removal rate, water absorption test and other means, analysis of the structure and properties of silicone rubber modified phenolic foam. The results show that the desmear properties of silicone rubber modified phenolic foam are obviously improved. With the increase of silicone rubber dosage, the apparent density of modified phenolic foam gradually increases and the compressive strength of foam also gradually increases. When the amount of silicone rubber is less than 10%, with the increase of the amount of silicone rubber, the water absorption of modified phenolic foam gradually decreased.