EPU/EP弹性体的力学及水声吸声性能

PDF(1499 KB)

振动与冲击 ›› 2014, Vol. 33 ›› Issue (17) : 30-33.

论文

EPU/EP弹性体的力学及水声吸声性能

孙卫红1，刘波1，晏欣2

作者信息 +

The study of the mechanical properties and underwater acoustic absorption properties of epoxyurethane/epoxy elastomer

SUN Weihong1, LIU Bo1, YAN Xin2

Author information +

文章历史 +

摘要

以二丁基二月桂酸锡（DBTDL）作催化剂、环氧丙醇作封端剂制备了环氧氨酯（EPU）；以自制的丙烯酸丁酯-二乙烯三胺（BA-DETA）为固化剂用浇铸法制备了EPU及环氧氨酯/环氧树脂（EPU/EP）共混物弹性体，并对该系列共混物弹性体的力学性能、动态力学性能和水声声学性能进行了表征，研究结果表明：随着EP用量的增加，EPU/EP共混物的拉伸强度逐渐增大，TDI型环氧氨酯的抗拉强度高于IPDI型环氧氨酯；随着EP含量的增加，TDI型环氧氨酯/环氧-E51(EPU1/E-51)共混物中、高温转变峰增强，杨氏模量变大，两组分相容性变差；EPU1/E-51系列共混物具有良好的水声吸声性能。EPU1/E-51(70/30)弹性体的水声性能最优，其平均吸声系数为0.75，最大吸声系数为0.94。

Abstract

Epoxyurethane (EPU) were prepared using dibutyltin dilaurate (DBTDL) as catalyst and glycidol as capping agent. EPU and EPU/EP blends elastomer were prepared using butyl acrylate- diethylenetriamine (BA-DETA) as curing agent by the casting method, the tensile properties, dynamic mechanical properties and underwater acoustic properties of these elastomer blends were characterized. The results show that the tensile strength of the EPU/EP blends elastomer increases with the amount of epoxy resin increases, and the tensile strength of TDI-type epoxyurethanes are higher than the IPDI-type epoxyurethane. With the content of EP increase, the middle and high temperature transition peak and the Young's modulus of TDI-type epoxyurethane/E-51 blends become large, and the compatibility of the two components becomes poor; EPU1/E-51 series blends have good underwater acoustic absorption properties. The underwater acoustic absorption properties of EPU1/E-51 (70/30) elastomer is best, the average absorption coefficient of which is 0.75, and the maximum absorption coefficient of which is 0.94.

导出引用

孙卫红;刘波;晏欣. EPU/EP弹性体的力学及水声吸声性能[J]. 振动与冲击, 2014, 33(17): 30-33

SUN Weihong;LIU Bo;YAN Xin. The study of the mechanical properties and underwater acoustic absorption properties of epoxyurethane/epoxy elastomer[J]. Journal of Vibration and Shock, 2014, 33(17): 30-33