摘要
通过对实验现象的观察和分析,推导超临界流体(SCF)微孔发泡注塑的注气流程,推论造成气涌产生原因为硬件设备不可避免的管路间隙,并设计实验证明和定量研究了影响气涌的压力差、限流孔径等因素,同时提出利用虚拟仪器求两段流量积分的方式测量初始气涌量的方法,为微孔发泡注塑精确注气提供了借鉴。
There are often some uneven mixing cells with uneven sizes in supercritical fluid(SCF)microcellular foam injection molding products. This fault was named as 'gas surge'phenomenon,and it influenced the quality of foam products,significantly.In this paper,the procedure of gas injection was deduced through the observation and analysis of the experimental phenomena.It was found that the occurrence of gas surge in SCF micro-foam injection molding was due to the clearance for hardware devices.Influencing factors of gas surge were confirmed by the experiment designed in this work and then studied quantitatively.A measurement method of initial gas surge was also proposed as a reference for precise injection of microcellular foam injection.
出处
《中国塑料》
CSCD
北大核心
2017年第7期82-86,共5页
China Plastics
关键词
微孔发泡
注塑
超临界流体
气涌
气体测量
microcellular foam
injection molding
supercritical fluid
gas surge
gas measurement
