Félreértett TPR anyag: Mennyire erős az UV -ellenállása?

I believe that many of you have always heard that TPR materials are not sun-resistant and will "go on strike" when exposed to ultraviolet rays? Outdoor products, gardening tools, car interiors... If these products that are exposed to the sun for a long time are made of TPR, will they really age quickly, become brittle and crack? Is the UV resistance of TPR materials really vulnerable? Today, the editor of Huizhou Zhongsuwang will take you to reveal its true performance!

The aging resistance and UV resistance of TPR materials are affected by many factors. In general, its UV resistance is average, and it will gradually age when exposed to ultraviolet rays and ozone for a long time. However, we have ways to improve this situation.

First of all, many TPR materials are based on SBS, and the unsaturated carbon-carbon double bonds in the SBS molecular chain are easily oxidized and broken under the action of external factors such as ultraviolet rays, ozone, and heat, which leads to the decline of material performance and aging. Moreover, some additives in TPR materials, such as plasticizers and stabilizers, may migrate, volatilize, or react with external substances during use, which will also affect the aging resistance of the material.

Secondly, the type of substrate has an impact on the ability to resist UV rays. Compared with SBS-based materials, TPR materials based on SEBS have better aging resistance and UV resistance because SEBS has a higher chemical bond saturation and a more stable structure. However, if exposed to harsh environments such as strong UV rays for a long time, SEBS-based TPR materials will still gradually age.

In addition, the use of additives is also critical. If the TPR material does not have UV absorbers or light stabilizers added, its UV resistance will be relatively poor. The UV energy in sunlight is relatively high, which will cause the TPR molecular chain to break and degrade or cross-link and age, resulting in reduced product performance and cracking. On the contrary, if an appropriate amount of UV absorbers and light stabilizers are added, these additives can effectively absorb and quench UV energy during use, thereby slowing down the aging rate and improving UV resistance.

In order to improve the UV resistance and aging resistance of TPR materials, some methods can be taken. For example, adding antioxidants, light stabilizers, ultraviolet absorbers and other additives to the TPR formula can effectively inhibit the oxidation and photolysis reactions of the material during use, thereby improving its aging resistance. TPR products can also be surface treated, such as spraying a surface treatment agent with good weather resistance to form a protective film on the surface of the material, so that the influence of external environmental factors on the TPR material can be isolated, thereby improving its anti-ultraviolet and aging resistance.

In addition, in the processing of TPR products, it is also important to strictly control process parameters such as temperature, pressure and time to avoid excessive temperature and excessive processing time causing material aging. At the same time, the use of advanced processing equipment and technology, such as vacuum hot pressing and in-mold vulcanization, can help reduce defects and stresses inside TPR products and improve their aging resistance.

It can be seen that the anti-ultraviolet ability of TPR materials is affected by multiple factors such as formula, additives and use environment. Although the aging resistance of native TPR materials has shortcomings, its anti-ultraviolet ability can be significantly improved through scientific modification and reasonable use. I believe that after reading this article shared by the editor, everyone will not have so many prejudices against TPR materials. In the future, with the upgrading of technology, TPR materials are expected to achieve breakthroughs in aging resistance and broaden their application boundaries in more fields.