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 .

苯酚与甲在碱性条件加成、缩合制得可发性酚树脂，该树脂和面活性剂、发剂、固化剂一起发即得酚塑料。