Is the Weather Resistance of TPU film Related to the Oxygen Contact?

---

The weather resistance of TPU film is related to the oxygen contact. TPU elastomer(thermoplastic polyurethane) is a type of polymer material with relatively high oxygen permeability. When TPU film comes into contact with oxygen, oxygen can penetrate into the interior of the TPU film and react with the molecules in the material, resulting in oxidation reaction.

 

Under the action of oxygen, the polymer chains in the TPU film may break, cross-link or degrade, resulting in degradation of the performance of the film material, such as reduced strength, reduced elasticity, increased deformation, etc. In addition, oxidation may also lead to changes in surface properties such as color change, yellowing and brittleness.

 

In order to improve the weather resistance of TPU film, a variety of measures can be taken. One way is by adding antioxidants to the material, which can slow down the rate of oxidation reaction. Another way is to use coating materials or processing methods to reduce oxygen exposure. For example, by coating the surface of the TPU film with an oxygen isolation layer or using gas barrier materials during the packaging process, oxygen penetration can be reduced, thereby improving the weather resistance of the film.

 

In general, the weather resistance of TPU film is related to oxygen exposure, and the effect of oxygen may have a negative impact on the performance of the film. Therefore, when designing and applying TPU film, it is necessary to consider oxygen exposure and take appropriate measures to improve its weather resistance.

POLYSAN is a professional TPU film factory in China, we supply good quality weather-resistance, anti-yellowing TPU film, compatible with Reach, RoHS 2.0 and OEKO-TEX regulation.