本文研究了SBS和SBS/ PS体系改性SMC复合材料.实验结果表明,SBS能显著降低SMC的收缩率,使其控制在0.3～0.5‰,同时也改善了SMC材料的力学性能SBS/PS体系的抗收缩效果比SBS好,可以实现零收缩.通过SEM分析,SBS的热膨胀和在SBS-UP界面处形成的微孔是其低收缩化的主要原因.
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