In this study, ethylene-vinyl acetate (EVA) copolymer-based blend foams with polyolefin elastomers (POEs), low-density polyethylene, or styrenic thermoplastic elastomers were prepared as a potential resilient material for reducing inter-floor noise. Various properties of EVA blend foams were measured in order to reveal the effects of EVA content and types of pair polymers consisting of EVA blend foams on dynamic stiffness, which is one of the key factors of resilient materials, in relation to hardness, specific gravity, and resilience. These properties had not been introduced by the construction industry until now. When the EVA/POE ratio was 20/80 and the foaming ratio was 210%, dynamic stiffness presented the lowest value at 5.97 MN m− 3. However, when the resilience was <20%, dynamic stiffness was as high as 37.66 MN m− 3 at an expansion ratio of 210% even when the specific gravity was low.

中文翻译：

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乙烯-醋酸乙烯共聚物基共混泡沫的制备及性能

在这项研究中，制备了基于乙烯-醋酸乙烯酯 (EVA) 共聚物的共混泡沫与聚烯烃弹性体 (POE)、低密度聚乙烯或苯乙烯热塑性弹性体，作为降低地板间噪音的潜在弹性材料。测量了 EVA 共混泡沫的各种性能，以揭示 EVA 含量和由 EVA 共混泡沫组成的成对聚合物类型对动态刚度的影响，动态刚度是弹性材料的关键因素之一，与硬度、比重、和韧性。直到现在，建筑业还没有引入这些特性。当EVA/POE比为20/80，发泡比为210%时，动态刚度最低为5.97 MN m− 3。而当回弹率<20%时，动态刚度高达37。