STUDY ON THE DAMPING PROPERTY OF POLYEPICHLOROHYDRIN URETHANE DAMPING MATERIALS
聚环氧氯丙烷氨酯阻尼材料的阻尼性能研究

The prepolymer of hydroxyl terminated polyepichlorohydrin (PPEPCH) was synthesized by ionic ring-opening polymerization of epichlorohydrin in solution and a series of polyurethane damping materials with the prepolymer as soft segment, including the change of the molecular weight of soft segment ,the content of hard segment and chain extender, were synthesized. The results of dynamic mechanical spectrometry (DMS) show that the compatibility between the soft and hard segments can be modulated by these changes and the materials with various compositions have excellent damping property in a wide range of temperature. Because the content of chlorine in these materials is very high, they are expected to have excellent fire-resistant and oil resistant properties.