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 .

苯与甲在碱性条件下经加、制得发性脂，该脂和表面活性剂、发泡剂、固化剂一起发泡即得泡沫塑料。