Recently, the China National Standardization Administration Committee issued the "on the proposed project of national standards project" primary and secondary school surface material sports floor "comments on the notice." The new national standard, which is published in this project, applies to the surface of the synthetic materials used in the primary and secondary schools. It is intended to stipulate the technical requirements, quality standards and testing methods for the laying of synthetic materials. It is proposed to increase the design, construction and environmental protection And acceptance and other content.
For the primary and secondary indicators of individual indicators will be strictly controlled
It is understood that the revision of the standard mainly from the perspective of ensuring the safety and safety of primary and secondary students to implement mandatory requirements, mandatory content mainly for two aspects: (1) chemical properties of synthetic materials on the surface of the sports venues and raw materials harmful substances limited requirements; 2) the physical properties of the impact absorption ＆#118alue, tensile strength. "New national standard" for the sports venues finished, solid raw materials, may release the harmful substances, there will be specific standards and requirements. And these limited requirements of harmful substances will draw on the existing mandatory standards for primary and secondary school students in the actual, individual indicators will be strictly controlled.
Hazardous substances in the finished product include: soluble lead, cadmium, chromium, mercury, sum of 6 kinds of phthalate plasticizers, 18 polycyclic aromatic hydrocarbons and benzo [a] pyrene, short chain chlorinated paraffin (C10 -C13), 4,4'-diamino-3,3'-dichlorodiphenylmethane (MOCA), vinyl chloride monomer, potentially harmful substances: total volatile organic compounds (TVOC), formaldehyde, benzene , Toluene and xylene, free toluene diisocyanate, free diphenyl methane diisocyanate, etc .; harmful substances in raw materials include: formaldehyde, benzene, toluene and xylene sum, six kinds of phthalate esters (DBP, BBP Soluble organic compounds, soluble lead, cadmium, chromium, mercury, solid materials, including the sum of 18 kinds of polycyclic aromatic hydrocarbons, the total amount of 18 polycyclic aromatic hydrocarbons, the total amount of 18 polycyclic aromatic hydrocarbons (PAHs) Benzo [a] pyrene, soluble lead, cadmium, chromium, mercury All of these substances have been verified to have been identified as hazardous substances and must be strictly limited.
Increase runway design and construction and environmental acceptance
In recent years, a large number of schools due to upgrading, the use of plastic runway to replace the original playground materials, but due to lack of regulatory system, the quality of the plastic runway worrying, some bad business use of toxic materials construction, to use the runway teachers and students to bring great harm The In order to ensure the health and safety of students, since 2016, the Ministry of Education and the General Administration of Sport, Ministry of Environmental Protection, China Petroleum and Chemical Industry Federation and other departments to negotiate and improve the standards of plastic runway related matters.
It is understood that the current standard "primary and secondary sports equipment and venues in the first part of the synthetic material surface exercise site" on October 1, 2005 implementation, longer time limit, the relevant toxic and hazardous substances are lacking, some technical parameters need According to the progress of existing detection methods to amend. In addition, the standard only specifies the technical requirements, quality standards and testing methods for the laying of the surface layer of synthetic materials, and does not cover the design, construction, environmental protection and acceptance of the laying of synthetic materials. Plastic track new country to increase the design, construction, environmental protection and acceptance and so on.