关键词: 环氧塑封料, 气泡, 脱气剂, 分层

Abstract: The bubbles in the epoxy molding compound (EMC) often bring various defects, thereby reducing the product qualification rate. Three different types of defoamers are studied, the defoaming mechanism of the defoamers is explained, and the defoaming effects of the three defoamers and their influence on the performance of epoxy molding compounds are determined. The final result shows that the solvent-free polyether modified polysiloxane defoamer is more suitable for EMC system. After adding, it can effectively reduce the internal air bubble of the spline, improve the impact resistance of the material, and effectively improve the delamination after MSL-3, thereby improving the reliability of the product.

Key words: epoxymoldingcompound, bubbles, defoamer, delamination