Plastic runway quality non-trivial "toxic runway" endangers children's health
Release Date: 2019-06-06
——Remember Plastic runway quality non-trivial "toxic runway" endangers children's health
In recent years, incidents of unqualified campus plastic runways have occurred in Beijing and Jiangsu.In response to this situation, the Ministry of Education has taken the lead in organizing the formulation of the national mandatory standard "Sports Grounds for Synthetic Materials in Primary and Middle Schools".The Ministry of Education issued a notice requiring that the sports venues for synthetic material surfacing for primary and secondary schools delivered after November 1, 2018 must implement the new national standard.So, what are the toxic substances in inferior plastic runways?What harm is it to young people?
In China, the plastic track has more than 30 years of development history, mature technology, safe use, and worthy of promotion, but there are also unscrupulous manufacturers to use toxic materials in pursuit of benefits.At present, the toxic pollution sources of inferior plastics mainly include the following three parts:
According to Luo Zhenyang, a polyurethane expert at the Department of Chemistry and Materials Science, School of Science, Nanjing Forestry University, first, the solvents used in plastic runways will volatilize toxic gases such as toluene and xylene. "Sports Ground" stipulates that people may have symptoms such as skin itching and dizziness.The student's breathing volume during exercise is 20 to 30 times that during quietness. If they exercise on the unqualified runway level, children will inhale harmful gases, and they are prone to irritation such as dizziness, nausea, and vomiting or discomfort.
Second, the inferior plastic runway contains a heavy metal drier, lead salt, which can promote the setting and fixation of the runway, but the heavy metal lead can cause permanent pollution.After long-term contact between human skin and this plastic track, lead will penetrate into the body, causing blood lead to exceed the standard, which is lead poisoning.
Third, some companies usually add phthalate plasticizers to pursue the performance of plastic runways, such as increasing elasticity.For adolescents who are growing, plasticizers not only affect boy testicle growth and development, but can also cause feminization of boys and precocious puberty in girls.
Finally, we need to pay attention to that after the completion of the plastic runway, there is generally no odor after a 7-day curing period.If the new plastic runway still has a noticeable odor after one week, there may be a problem with the material.