UV stability of TPU film
TPU film is a widely used material in various fields, which has excellent elasticity and abrasion resistance, and also has high UV stability. This article will discuss the UV stability of TPU film in detail.
First of all, we need to understand what is UV stability. UV stability refers to the material in the ultraviolet radiation, can maintain its original performance and appearance of the ability. In the process of outdoor use, the material will be subjected to long-term exposure to ultraviolet radiation, if the material's UV stability is poor, it will occur discoloration, cracking and other phenomena, affecting its service life. Therefore, UV stability is of great significance for the application of the material.
TPU film as a kind of elastic material, its molecular chain contains special chemical groups can absorb ultraviolet rays, and will be converted into heat energy released, thus avoiding the destruction of the molecular structure of the material by ultraviolet rays. In addition, TPU film also has a high molecular weight and cross-linking density, which makes it has a better heat resistance and oxidation resistance, can effectively resist the destructive effect of ultraviolet rays.
So, what are the specific manifestations of the UV stability of TPU film? First of all, TPU film in the process of long-term use under ultraviolet light, its color change is small, will not be like some materials as obvious discoloration phenomenon. Secondly, TPU film has a good aging resistance, even in harsh environmental conditions can maintain a longer period of stable performance. In addition, TPU film also has a strong resistance to crack expansion, can effectively prevent the cracking phenomenon caused by ultraviolet radiation.
In order to further improve the UV stability of TPU film, we can add UV additives to realize. These additives can absorb and reflect UV rays and reduce the damaging effect of UV rays on the material. At the same time, we can also adjust the formulation and process conditions of TPU film to make it have more excellent UV resistance. For example, increase the cross-linking density of TPU film, introduce UV-resistant special groups and so on.
In short, TPU film has been widely used in various fields as a material with excellent UV stability. In the future, with the continuous development of science and technology, it is believed that the performance and application scope of TPU film will be further expanded.
