树脂中气泡运动速度的影响因素  

EXPERIMENTAL STUDY ON BUBBLE RISING VELOCITY IN RESIN

作　　者：王景明[1] 孙志杰[1] 赵卫娟[1] 张佐光[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《玻璃钢／复合材料》2005年第4期27-30,共4页Fiber Reinforced Plastics/Composites

摘　　要：孔隙是影响复合材料性能的重要因素之一,而孔隙的形成与复合材料制造过程中所产生的气泡密切相关。为了有效地减少复合材料成型过程中的气泡、控制制品的孔隙含量,了解气泡在纯树脂中的运动过程是十分必要的。本文借助图像跟踪和数码采集照相系统,研究了气泡体积、树脂粘度、外压、树脂种类和树脂流动状态对单个气泡运动规律的影响。结果表明,气泡的运动速度随着气泡体积的增加、树脂粘度的减小及外界压力的减小而增大。此外,树脂种类和树脂流动状态对气泡的运动速度也有较大的影响。该研究结果将为复合材料成型过程中气泡运动模型的建立提供实验依据。Porosity is one of the most important factors which affects the performance of composites. The formation of porosity is closely related to the bubbles formed during the composite manufacturing. Thus, it is essential to know the movement behavior in resins in order to reduce voids and control porosity content effectively. In this article the effects of the bubble volume, resin viscosity, external pressure, varieties of resins,resin flow direction and velocity on the moving behavior of a single bubble in resin are studied with digital camera and image collection systems. The results demonstrate that the bubble velocity will increase with the increasing of the bubble volume, decreasing of resin viscosity and external pressure. Furthermore, the bubble velocity is also significantly affected by varieties of resins and flowing state of the resin.

关 键 词：影响因素 树脂 气泡运动 

分 类 号：TB332[一般工业技术—材料科学与工程]