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形状记忆环氧树脂(SMER)是一种具有热致形状记忆性的热固性树脂,其加工性好,形变量大,具有良好的应用前景。但韧性和热稳定性不足仍然是制约SMER使用范围的重要因素。将具有高度支化结构和大量羟端基的芳香族超支化聚酯(H202)用于SMER改性,引入1%(质量分数)H202时,能够有效改善SMER的热稳定性、韧性和强度,且不会影响其形状记忆性能,具有良好的改性效果。
Shape Memory Epoxy Resin (SMER) is a kind of thermosetting resin with thermochromic shape memory, which has good processability and large deformation volume, and has good application prospect. However, the lack of toughness and thermal stability is still an important factor restricting the use of SMER. Aromatic hyperbranched polyesters (H202) with highly branched structure and a large number of hydroxyl end groups were used in the SMER modification. The introduction of 1% (mass fraction) H202 can effectively improve the thermal stability, toughness and strength of SMER, And will not affect the shape memory performance, with good modification effect.