气辅注射成型玻璃纤维增强聚丙烯的发泡结构  

Foaming Structure Formed in Glass Fiber Reinforced PP Molded by Gas-assisted Injection Molding

作　　者：郑国强[1] 王松杰[1] 谢英[1] 杨鸣波[2] 刘春太[1] 

机构地区：[1]郑州大学材料科学与工程学院橡塑模具国家工程研究中心,河南郑州450002 [2]四川大学高分子材料科学与工程学院高分子工程国家重点实验室,四川成都610065

出　　处：《现代塑料加工应用》2008年第5期1-4,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金资助项目(105590352);河南省自然科学基金资助项目(0612002000)。

摘　　要：用扫描电镜对气辅注射成型玻璃纤维(GF)增强聚丙烯(PP)制品横截面进行观察。结果表明,在靠近气道内壁一定厚度的区域内都有发泡结构生成,而纯PP的气辅注射成型制品则没有这种发泡结构,并且这种发泡程度一般随着GF含量和气体压力的增加而增大;在形貌分析的基础上,探讨了气辅注射成型过程中GF和气体穿透对发泡结构形成的影响。Cross-sections of glass fiber （GF） reinforced PP molded by gas-assisted injection were investigated by scanning electron microscope （SEM）. The results show that foaming structure is formed in the region near the gas channel surface. However, foaming structure is not found in the pure PP parts. Additionally, degree of foaming is elevated when content of GF and gas pressure increase. On the basis of the morphological analysis, the effect of GF and gas penetration on foaming structure formation during gas-assisted injection molding is also discussed.

关 键 词：聚丙烯 玻璃纤维 复合材料 气辅注射成型 发泡结构 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]