Many of us like to play sports, run and play soccer on the breathable plastic runways in our schools, but there is always a "smell" that can be detected during the exercise process. Whether it is a new plastic runway or a breathable plastic runway used to some extent, it can give off a certain "smell". Newly built plastic runways certainly smell "better" than old ones. For many ordinary sports enthusiasts, they do not know where this "smell" comes from and whether this "smell" is harmful to our body. So where does this "smell" come from? How does the "toxic" runway form? I will analyze the answer for you one by one. Breathable plastic runway on the source of the odor:

(a) poor quality runway materials

1, add excessive toluene, xylene diluent.

Breathable plastic runway is the main component of polyurethane, polyurethane is a combination of "dozens of" materials, material composition is complex, most of the polyurethane is a and B of the other components of the chemical substances according to a certain proportion of the reaction to the formation of an elastic material. In the reaction process, the two groups of materials sometimes need to add solvents to adjust the reaction effect, toluene, xylene as an organic solvent dilution, play a role in prolonging the curing speed.

2, banana water (Chinas water), gasoline as a diluent to join.

We can see that the main component of banana water is xylene, gasoline contains a certain amount of aromatic hydrocarbons, these substances have an unpleasant odor and toxicity, the thickness of the plastic runway is generally about 10 mm, it is difficult to evaporate, not only is it harmful to the children, but also to the front-line personnel engaged in sports engineering is more harmful.

3, add heavy metal dryer - lead salt.

This substance can promote the solidification of the runway stereotypes, but the heavy metal lead will cause pollution. The problem with lead salts is that they are toxic. This kind of poison to the waters, soil environment pollution persists, harmful to the human body.

4、Add phthalate plasticizer

The main role of adding o-phenylene plasticizer is to improve the elasticity of the runway to meet national standards, if excessive use of o-phenylene plasticizer, not only is it toxic, the boy can also be sterilized.

5, toluene diisocyanate (TDI) adhesive

TDI is a colorless liquid, emitting a pungent and pungent odor, in the plastic runway mainly to increase the tensile force of the runway.

With the 5 points above, can you see that they are the only culprits of the "odor" and "toxic substances" on the playground? Are they the only culprits of "toxicity" and "odor" in the playground?

(b) Inferior black rubber granules

In the type of breathable plastic runway, breathable plastic runway and hybrid plastic runway need to be filled with black rubber granules, artificial grass soccer field also often use a large number of filler granules. Hazardous composition analysis of black rubber particles

The composition of black rubber particles is more complex. They are mainly made of waste tires, waste cable skins, rubber conveyor belts, rubber seals, foam shoes, and waste windows. The composition of recycled black particles is more complex. It is the use of waste rubber raw materials for recycling. I don't know how many times it has been recycled, and benzene and toluene have been added to it. These two substances themselves have an irritating odor and toxicity, and with so many black pellets filling the campus playground, the results can be imagined.