Kim Seongdo, Shin Hyun-Oh, Yoo Doo-Yeol
Department of Agricultural and Rural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea.
Department of Architectural Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea.
Polymers (Basel). 2020 Dec 17;12(12):3022. doi: 10.3390/polym12123022.
This study evaluates the tensile properties, including the tensile strength and elongation at break, and dynamic behavior, including shock absorption and vertical deformation, of an elastic rubber layer in synthetic sports surfaces produced using waste tire chips containing styrene-butadiene rubber (SBR). The primary variables of the investigation were the number of compactions, resin-rubber granule ratio, and curing conditions, such as aging, the temperature, and the relative humidity. The test results showed an increase in the tensile strength of the elastic rubber layer with recycled SBR as the number of compactions, resin-rubber granule ratio, curing period, and temperature increased, while the elongation at break was affected by the curing temperature and period. Shock absorption and vertical deformation decreased with an increasing resin-rubber granule ratio and number of compactions due to the increased hardness. However, these properties were not significantly affected by the curing conditions. Furthermore, the test results indicated that the curing temperature has a pronounced effect on the tensile properties of the elastic rubber layer, and maintaining the appropriate curing temperature-approximately 50 °C-is a possible solution for improving the relatively low tensile properties of the elastic rubber layer.
本研究评估了使用含有丁苯橡胶（SBR）的废旧轮胎碎片生产的合成运动场地中弹性橡胶层的拉伸性能（包括拉伸强度和断裂伸长率）以及动态性能（包括减震和垂直变形）。研究的主要变量为压实次数、树脂 - 橡胶颗粒比例以及固化条件，如老化、温度和相对湿度。测试结果表明，随着压实次数、树脂 - 橡胶颗粒比例、固化时间和温度的增加，含回收丁苯橡胶的弹性橡胶层的拉伸强度有所提高，而断裂伸长率受固化温度和时间的影响。由于硬度增加，减震和垂直变形随着树脂 - 橡胶颗粒比例和压实次数的增加而降低。然而，这些性能受固化条件的影响并不显著。此外，测试结果表明，固化温度对弹性橡胶层的拉伸性能有显著影响，保持适当的固化温度（约50°C）可能是改善弹性橡胶层相对较低拉伸性能的一种解决方案。
