A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .
苯酚与甲醛在碱
条件下经加成、缩合制得可
酚醛树脂，该树脂和表面
、
、固化一起即得酚醛沫塑料。
A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .
苯酚与甲醛在碱条件下经加成、缩合制得可酚醛树脂，该树脂和表面、、固化一起即得酚醛沫塑料。
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