Views: 0 Author: Site Editor Publish Time: 2021-10-14 Origin: Site
Artificial turf is gradually replacing part of the pure natural turf because of its unique goodness. At this stage, it has been commonly used for children and adults to play on the grass, ecological parks, and every sports venue, especially in the campus sports field level is colorful. However, is artificial turf really very good for people without any harm? The answer is probably no. The evaporation of organic chemical air pollutants and the "urban heat island effect" caused by the evaporation of harmful organic chemical air pollutants within the raw material of artificial turf has caused widespread concern about atmospheric pollution and the harm factor that the body will have.
1. Identification of harmful organic chemical air pollutants inside the grass leather
2. The "urban heat island effect" of artificial turf
Artificial turf is made up of a mixture of high-pressure polyethylene and polypropylene, hand-woven up to simulate thatch. This kind of "grass" is paved vertically, mostly dominated by high-pressure polyethylene (PE) and polypropylene (PP), but also can be used polyethylene and nylon 6, etc. The leaves are covered with the emerald green color that imitates the pure natural grass. Plastic chemical fiber materials include a lot of organic chemicals that are known or suspected to cause physical and mental health hazards. To improve or fill the characteristics of plastic materials, manufacturers add preservatives to the raw materials to enable a large number of new effects - imitation of natural grass color, flame retardant characteristics, heat resistance, ultraviolet absorbers, structure improvement and wear resistance. The fact is that this kind of variety of preservatives, after improving and enhancing some of the characteristics of the raw material, also become the key harm factor of artificial turf pollution.
The artificial turf bed structure consists of vulcanized rubber, concrete or leachate, the foundation can not have the effect of repairing water resources, so it can not reduce the ground temperature, and its thermal conductivity is small, causing the ambient temperature to be substantially higher than the gas temperature, especially in closed stadiums this problem is more serious. In the summer afternoon, the artificial turf places can be observed on the gas around the soil layer has a significant heat distortion condition. The average surface temperature of purely natural grass is less than the average temperature of 2°C to 3°C, while the ambient temperature of artificial turf is higher than the average temperature of 6°C to 11°C and warms with the climate, according to the comparison. The increase in the ambient temperature of artificial turf is significantly higher than that of purely natural grass. Using thermal infrared satellite imagery and big data technology, it was found that many of the hottest areas in large cities are artificial turf sites. This not only harms people who are active on the subject of sports fields, but also exacerbates the "urban heat island effect" - because the gray-black synthetic surface (such as roofs and leachate) absorbs heat, causing large cities to be hotter than nearby areas.
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