plastic runway plastic runway pungent odor colour series come from
traditional polyurethane plastic track are essentially solvent-based, and toluene diisocyanate (tdi) system, since organic solvents are volatile, the construction process will inevitably release harmful gases in high temperatures more obvious, easy on-site construction workers cause some damages. toluene diisocyanate (tdi), highly volatile, toxic in the country has been listed as virulent, included in the "highly toxic chemicals directory" is suspected human carcinogen; it has a strong pungent odor in the human body and having a latent accumulation, skin, eyes and respiratory tract have a strong stimulating effect, long-term exposure to toluene diisocyanate can cause chronic bronchitis. international movement runway technology association proposed in 1994 did not accept the use of the runway tdi polyurethane component recommendations.
china currently has a corresponding plastic track what performance standards?
our standard for the construction of the runway as "synthetic material runway surface standard" (gb14833-2011). although the free tdi, benzene, xylene, heavy metals and other substances that contain standard plastic runway were limited, but the kind of additives and volatile organic compounds voc content, there is no clear limit.
pungent odor was reported that the runway come from?
plastic runway polyurethane glue smell from the poor in chlorides may arise, residual free diisocyanate (tdi), part of the solvent (toluene, xylene, etc.) remaining residual organic lead, in addition to black and epdm rubber particles it may also be residual sulfides, polycyclic aromatic hydrocarbons, bromobenzene additives, resulting smell. due to the current at the time of some of the glue factory production of polyurethane glue, in order to reduce costs, it is adding some poor quality or harmful chlorinated paraffin plasticizers dop as a plasticizer, or join pungent odor of benzene or xylene to replace part active ingredients, resulting in the odor generated before and after the construction of the runway.
guangzhou dili solvent-free environmentally friendly plastic track series: december 2015 guangzhou dili and dow jointly set up r & d team, designed to provide solutions for sports venues pavement material. dow is the world's leading companies, which in a stable raw material system and perfect the production process of combining the plastic runway material product research and development, making it a highly efficient dow voramer ™ series of products, and high-quality polyurethane resin based on the use mdi system perfect replacement tdi, moca substituted with environmental chain extender, do not add any organic solvents, heavy metals and organic plasticizers, to eliminate the source of highly toxic and carcinogenic, and full compliance with international environmental requirements; and convenient construction adhesive strong, laying high efficiency, fast curing, to adapt to different requirements of construction machinery paving spraying or the like, the process of laying no smell, does not affect the normal school teaching and surrounding residents live a normal life, no smell put into use, without any release of harmful substances dow voramer ™ safety or environmental protection, whether all throughout the production, construction and use of the whole process.