Strąk Cezary, Kozikowska Ewelina, Małek Marcin, Wachowski Marcin
Building Research Institute, 1 Filtrowa St., 00-611 Warsaw, Poland.
Institute of Civil Engineering, Faculty of Civil Engineering and Geodesy, Military University of Technology in Warsaw, 2. Gen. S. Kaliskiego, 00-908 Warsaw, Poland.
Materials (Basel). 2025 Jul 16;18(14):3342. doi: 10.3390/ma18143342.
This study investigates the effect of accelerated aging on the microstructure and surface properties of synthetic sports surfaces, with the goal of developing a more representative laboratory simulation method. Three common types of polyurethane-based sports surfaces were examined: (1) a dual-layer SBR base with a thin EPDM spray topcoat; (2) a single-layer EPDM surface with a smooth finish; and (3) a dual-layer "sandwich" structure with a rough EPDM upper layer. Samples were tested for slip resistance (PTV), abrasion resistance, and surface morphology using SEM, as well as surface roughness and tensile properties before and after aging. Method combining UV radiation and water spray was introduced and evaluated. Microstructural analysis with roughness measurements revealed surface degradation in all materials, with more extensive damage observed in the UV + spray cycle. Slip resistance results showed reduced performance in dry conditions and improved values in wet conditions post-aging. The single-layer EPDM surface demonstrated the highest initial dry PTV, while the dual-layer with spray had the lowest. After aging, all surfaces exhibited smaller differences between dry and wet performance but no longer met dry condition standards. These results may guide future revisions of performance testing standards and contribute to the development of safer, longer-lasting synthetic sports surfaces.
本研究调查了加速老化对合成运动场地微观结构和表面性能的影响，目的是开发一种更具代表性的实验室模拟方法。研究了三种常见类型的聚氨酯基运动场地：（1）带有薄三元乙丙橡胶（EPDM）喷涂面漆的双层丁苯橡胶（SBR）基层；（2）具有光滑表面的单层EPDM表面；（3）具有粗糙EPDM上层的双层“三明治”结构。使用扫描电子显微镜（SEM）对样品进行防滑性（摆值摩擦系数，PTV）、耐磨性和表面形态测试，以及老化前后的表面粗糙度和拉伸性能测试。引入并评估了紫外线辐射和喷水相结合的方法。通过粗糙度测量进行的微观结构分析表明，所有材料的表面均有降解，在紫外线+喷水循环中观察到的损伤更为广泛。防滑性结果表明，老化后干燥条件下的性能降低，而潮湿条件下的值有所提高。单层EPDM表面的初始干燥PTV最高，而带喷涂的双层表面最低。老化后，所有表面在干燥和潮湿性能之间的差异较小，但不再符合干燥条件标准。这些结果可能会指导未来性能测试标准的修订，并有助于开发更安全、更耐用的合成运动场地。
