foamer

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 .

苯酚与甲醛在碱性条件下经加成、缩合制得可性酚醛树脂，该树脂和面活性剂、泡剂、固化剂一起泡即得酚醛泡沫塑料。