【摘要】 本文研究了由端羟基聚环氧氯丙烷(PECH)制备的聚氨酯的力学性能,动态力学性能和耐介质性能。结果表明,这种聚氨酯的抗张强度,阻尼系数(tanδ),玻璃化温度和tanδ>0.7时的温度范围都与固化混合物的NCO/OH比值有关。控制这个比值,可以得到良好的阻尼材料,这种材料还具有优良的耐介质性能。更多还原

【Abstract】 Mechanical and dynamic mechanical properties and medium resistance of polyurethane based on hydroxy-tarminatad polyepichlorogydrin (PECH) were studied. The results showed that tensile strength, damping coefficient (tano) , glass temperature (Tg) and the range of temperature above which tanδ≥0.7were effected by the ratio of -NCO to -OH(r) in the curing mixture. Controlling the r volue, a damping material with excellent medium resistance was obtained.更多还原