论文部分内容阅读
氰酸酯(CE)树脂的刚性结构致使其本身不具备形状记忆行为,故采用含有柔性链段的端羧基液体丁腈橡胶(CTBN)改性CE,可制备具有形状记忆效应的共聚物;然后将不同质量分数的硼酸铝晶须(Al Bw)掺杂到上述共聚物中,可制成Al Bw/CE复合材料。研究结果表明:当w(Al Bw)=10%(相对于复合材料总质量而言)时,复合材料的弯曲强度和储能模量相对最大;当w(Al Bw)≤20%时,该复合材料具有良好的形状记忆性能,变形的试样几乎可完全回复,但其形变回复速率基本上随Al Bw含量增加而下降。
Because of the rigid structure of cyanate (CE) resin, it does not possess the shape memory behavior itself. Therefore, the copolymer with shape memory effect can be prepared by modifying the CE with terminal carboxyl liquid nitrile butadiene rubber (CTBN) containing flexible segments. Different mass fraction of aluminum borate (Al Bw) doped to the above copolymer, can be made Al Bw / CE composite material. The results show that the flexural strength and storage modulus of composites are the largest when w (Al Bw) = 10% (relative to the total mass of the composite); when w (Al Bw) ≤20% The composites have good shape memory properties, and the deformed samples can almost completely recover, but the deformation recovery rate decreases with the increase of Al Bw content.