The results of SEM showed circle foams were uniform when the content of AC foaming agent was 1.0 phr, and broken locally when the content of AC foaming agent was 3.0 phr.

• 由扫描电镜可以看出，AC发泡剂为1.；0份时的发泡木塑材料中分布着较均匀统一的圆形泡孔，而AC发泡剂为3