【摘要】 针对影响酚醛泡沫性质的众多参数的不确定性 ,给出了可发泡性甲阶酚醛树脂的合成方法及酚醛泡沫塑料发泡典型配方 ;考察了反应温度及水含量对酚醛树脂粘度的影响 ,讨论了表面活性剂、发泡剂、固化剂及发泡温度对泡沫性能的影响。结果表明 :当表面活性剂用量为 4%～ 7% ,发泡剂用量为 4%～ 10 % ,固化剂用量为 8%～ 12 % ,发泡温度在 70～ 80℃范围时 ,可制得较好的酚醛泡沫塑料。更多还原

【Abstract】 This study presented the experimental results on the preparation and characteristics of resol and phenolic foam because of a very wide range of process variables with little indication of preferred or desired process parameters. The effects of reaction time and water concentration on the resin viscosity were studied. The effects of surfactant, blowing agent, acid catalyst and foaming temperature on the density of phenolic foam were also investigated. When the surfactant content was 4%～7%, blowing agent content 4%～10%, acid catalyst content 8%～12%, and at foaming temperature 70℃ ～ 80℃, phenolic foams with good properties could be prepared.更多还原