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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 .

苯酚与甲醛在件下经加成、缩合制得酚醛树脂,该树脂剂、发泡剂、固化剂一起发泡即得酚醛泡沫塑料。

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3G, 401(K), a,

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