Preparation And Property Regulation Of Cooling Artificial Turf

In recent years, the industry of artificial turf has developed rapidly, it is now being used on not only sports venue but also various leisure areas. However, the temperature of artificial turf is much higher than that of natural lawn in summer. Not only can the high temperature cause uncomfortable psychological effect to athletes, but also increase the sports injuries and affect the normal play of athletes’level. Therefore, the development of cooling artificial turf is of great practical value. In this paper, infrared reflective materials were used to artificial turf system, and the cooling effect and actual application performance were studied as well.Firstly, the cooling effect of functional master-batch and artificial turf system containing infrared reflective materials was studied systematically. The results showed that the cooling effect both of functional master-batch and artificial turf enhanced along with the increase of infrared powder. The maximum temperature drop of functional master-batch with zinc oxide (ZnO) and far-infrared ceramic powder (FCP) was15.9℃and14.2℃respectively. The temperature of artificial turf with25%ZnO and FCP reduced7.0℃and8.4℃separately. Secondly, the organic modified ZnO was prepared and its property in artificial turf was studied. After reacting4hours under the conditions of85℃with2%modifying agent and the pH value of6.5, the best modification result is gained. The consistency between modified power and matrix resin was enhanced. Thirdly, functional filler (ZnO/Fe2O3) with high reflectivity was prepared and the heterogeneous nucleation process conditions and cooling effect of composite powder were discussed. ZnO was coated on the surface of Fe2O3to form a core-shell structure, the reflectivity of Fe2O3and ZnO/Fe2O3, was25.3%and55.2%. Finally, the cooling effects of artificial turf and functional filler were investigated in real and lab model environment severally and the influence of infrared powder on the artificial fiber was analyzed. The results reflected that the temperature of artificial turf template changed between that of ground and air, and the temperature of artificial turf template with25%ZnO was close to that of air. Functional filler could also reduce the system temperature. The adding of modified ZnO could significantly enhance the mechanical properties of artificial turf fibers, and the tensile strength and elongation at break of artificial turf fibers with25%modified ZnO improved12.3%and42.3%, respectively.