When it comes to yellowing resistance and UV resistance, first we must know that TPE is composed of those materials, as we all know, TPE material in the production process is a physical reaction process, rather than a chemical reaction process, he is made of polymer materials SEBS or SBS oil-filled blend, in the production process if you want to achieve the desired effect on the addition of the right amount of additives, in the TPE production process for SEBS / SBS such a base material requirements are quite high. SBS such a base material requirements are quite high.

　　First of all, TPE with SEBS as the base material has better yellowing resistance than TPR with SBS as the base material. This is because SEBS is a hydrogenated product of SBS thermoplastic rubber.

　　In looking at the quality of the oil is good or bad, but also easy to cause TPE transparent material easy to yellow, so the base oil manufacturer's production and processing process is important. Choose the white oil with more hydrogenation times, which can improve its yellowing resistance. In addition, adding antioxidants or anti-aging agents during the production process can improve the yellowing resistance of the base oil.

　　For some transparent or white TPE products with high requirements of yellowing resistance, you can consider adding anti-UV agents in the TPE formulation to enhance the yellowing resistance of the material.

　　How to choose the right TPE material for you, can better achieve the effect of yellowing resistance, anti-UV? Generally speaking, transparent material below 35 degrees to achieve very good yellowing resistance effect is difficult, the cost will be very high, the cost of transparent additives increase, generally add additives will make the material itself hardness changes. So if there is no requirement for transparency, cost requirements, try to choose the TPE material, the higher the hardness, in more than 65A, 100A below the effect of yellowing resistance will be different, if there is no requirement for cost, it is recommended that the hardness of 35A-75A or so, the effect will be better Oh.