受阻酚AO-80/混炼型聚氨酯复合材料的制备及阻尼性能研究

Preparation and Damping Property of Hindered Phenol AO-80/MPU Composite

在混炼型聚氨酯(MPU)中加入受阻酚AO-80制备AO-80/MPU复合材料,并对其性能进行研究。结果表明:受阻酚AO-80与MPU的热力学相容性良好;随着受阻酚AO-80用量的增大,受阻酚AO-80/MPU复合材料的玻璃化温度逐渐向高温方向移动;与纯MPU相比,复合材料的损耗因子最大值增大,有效阻尼温域拓宽,物理性能下降,阻尼性能明显提高;当受阻酚AO-80用量为40份时,复合材料的阻尼性能和综合物理性能良好。

A hindered phenol AO-80/MPU composite was prepared by mixing hindered phenol AO-80 into millable polyurethane（MPU）,and its properties were investigated.The results showed that the compatibility between hindered phenol AO-80 and MPU was good.As the addition level of hindered phenol AO-80 increased,the glass transition temperature of hindered phenol AO-80/MPU composite gradually increased.Compared with the pure MPU,the physical properties of hindered phenol AO-80/MPU composite decreased,the maximum loss factor increased,the temperature range of effective damping broadened,and the damping property was significantly improved.When the addition level of hindered phenol AO-80 was 40 phr,the damping property and comprehensive physical properties of the composite were optimized.