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首页> 外文期刊>Journal of Applied Polymer Science >Styrene-Ethylene/Butylene-Styrene Blends for Improved Constrained-Layer Damping
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Styrene-Ethylene/Butylene-Styrene Blends for Improved Constrained-Layer Damping

机译：苯乙烯-乙烯/丁烯-苯乙烯共混物可改善约束层阻尼

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摘要

The influence on the adhesion to some metal surfaces and the damping properties of various modified styrene-ethylene/butylene-styrene (SEBS) materials was evaluated. Modification of the different phases of the SEBS with resins was shown to have a large effect on the damping properties of the polymers, which were evaluated by dynamic mechanical analysis (DMA). A small amount of maleic anhydride grafted onto the EB block was found to lead to a significant improvement in the adhesion of the polymer to some metal surfaces without affecting the damping properties of the poly-mers. The results of the DMA tests on the polymers were used to calculate the composite loss factor (CLF) for a steel laminate, which consisted of two steel plates with a polymeric layer in between, according to the theory proposed by Ross, Ungar, and Kerwin. The calculated results were compared with the measured CLFs determined in vibrating beam tests (VBTs). The agreement between the calculated and measured values was quite fair, provided that the DMA values used for the calculations were recalculated to the actual higher frequencies used in the VBTs, using the time— temperature superposition principle.
机译：评估了各种改性苯乙烯-乙烯/丁烯-苯乙烯（SEBS）材料对金属表面附着力和阻尼性能的影响。结果表明，用树脂对SEBS的不同相进行改性对聚合物的阻尼性能有很大影响，这通过动态力学分析（DMA）进行了评估。发现少量接枝到EB嵌段上的马来酸酐可导致聚合物与某些金属表面的粘合力显着提高，而不会影响聚合物的阻尼性能。根据Ross，Ungar和Kerwin提出的理论，对聚合物进行DMA测试的结果用于计算钢层压板的复合损耗因子（CLF），该层压板由两块钢板组成，中间有一层聚合物层。将计算结果与在振动梁测试（VBT）中确定的测得的CLF相比较。如果使用时间-温度叠加原理，将用于计算的DMA值重新计算为VBT中使用的实际较高频率，则计算值与测量值之间的协议就相当公平。

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