PMN掺杂酯醚共聚聚氨酯压电阻尼材料的制备及其表征

Synthesis and properties of PMN hybrid TPU-EP/SPU composites

通过溶液共混法制备了铌镁锆钛酸铅(PMN)掺杂酯醚共聚聚氨酯压电阻尼材料,并研究了PMN含量对材料阻尼性能、压缩生热、压电性能及力学性能的影响。结果表明,PMN可有效改善材料的阻尼性能,并且可以降低材料因阻尼效应而产生的温度升高,同时也可赋予材料一定的压电性,但当PMN含量过高时反而不利于材料阻尼性能和力学性能的提高。

A series of lead magnesio-niobate（PMN）hybrid ester-ether type polyurethane damping composites were prepared by solution blending and the influence of PMN on the damping properties,piezoelectric properties,compression heat build-up and mechanical properties were explored.The results indicate that damping properties can be effectively improved by adding PMN to polymer mixture,and the temperature elevation of material resulted from damping effect can be reduced.Meanwhile,piezoelectric properties of composite also can be improved as the content of PMN increases.