Polyurethane itself is non-toxic, but no material can be 100% pure.

The synthesis of polyurethane foam requires polyols, isocyanates, surfactants, catalysts, foaming agents and some functional additives

1. Polyols and isocyanates generally react completely to form polymer solid substances, without volatility or residue

2. Surfactants and catalysts are not involved in the reaction and will stay in the foam and slowly disperse. Low emission at room temperature, but high temperature environment

It will accelerate the volatilization, so the new car has a strong smell after being exposed to the sun.

Now there are reactive surfactants and catalysts. The reaction is connected to the polymer chain segment and will not be free.

3. The foaming agent includes chemical foaming agent and physical foaming agent. The chemical foaming agent is water, the reaction produces carbon dioxide, odorless; Physical foaming agent

It is a substance with low boiling point (changing from liquid state to gas state during heating), which has basically evaporated after the reaction, and is harmful to production personnel,

But these substances are almost gone when they reach users.

4. In addition, if the raw materials used are of poor quality and low purity, the smell will be strong, and the natural smell of the products produced will also be strong

No chemical product can guarantee 100% purity. The cloth also has smell and chemical residue, which should be used after cleaning; Polyurethane products

It should be used after ventilation and odor dissipation.

In addition, do not believe that anything is 100% natural unless it is directly used from nature.

For example, is the so-called natural latex in the market pure natural? Rubber resin can be turned into latex pillow after being stirred? mattress? Don't be naive!! In addition to resin, the production of latex also requires the addition of surfactant (which is required for foam stability), vulcanizing agent, catalyst, etc.