Natural grass green lawn grass by composition, stems slender, soft, does not produce static friction when the athlete's body to its occurrence. Artificial turf products are polymer materials, since the resistance is large, easy to produce static electricity when the friction. Medical research indicates that: people will feel a contact with the electrostatic hot, and there is irritability, headache, feeling. Such a situation can cause psychological discomfort athletes, affecting its technical level of play. In addition, changes in the surface electrostatic potential difference, impede the normal cardiac conduction, and so easy to induce premature ventricular arrhythmia, while the presence of fire safety hazards.
When the artificial turf of the friction coefficient is generally between 0.8 to 1.2, which means that athletes make tackles and other body movements with the site of intense friction on this site, contact the site's temperature will rise by 15 至 20 ℃. Studies have shown that artificial turf temperature when the air temperature at 33 ℃, noon direct sunlight will reach 50 ℃, this time in the game's artificial turf sports field athlete body will encounter high temperature 70 ℃, it may burn the skin. In addition, artificial turf as filler quartz sand in use for some time, will be brought to the turf surface, the rough surface will seriously harm the player's body. Although friction with the natural grass will cause the temperature rise of the contact area, but turfgrass soft texture determines the natural grass sports surface having excellent smoothness appropriate, heat generated by friction within the tolerable range of the human body, not athletes physical harm. Excellent natural grass has moderate hardness and resilience, athletes can arbitrarily make a variety of technical movements, do not worry because the fall and suffer serious injury.
Currently artificial turf buffer layer material for domestic use rubber or foam, only 5 mm thickness, elasticity is not ideal. Artificial turf sports field athletes vigorously against high-intensity, ankle, knee joint probability by contusions, sprains and other injuries is greater than natural grass stadium. In the artificial turf football field, after the athletes make difficult moves, due to the elasticity is not ideal, can not produce enough buffer time, it is possible to make the landing bodily much harm.