TPE or TPR? To understand the aging resistance performance of a material, we should first know what aging process is. Groups with poor chemical stability (low chemical bond energy) at the microscopic level of polymer chains are affected by the long-term effects of substances with stronger oxidation (high chemical bond energy) in the outside world, resulting in irreversible changes in the material structure.
TPE and TPR are modified materials based on SEBS\SBS. They have excellent elasticity and delicate feel and other properties. Their application fields have covered the daily necessities, toys, tool accessories, automotive accessories, building materials, and baby products industries. Some of these products need to be involved in outdoor use. Due to the long-term effects of radiation, ozone , ultraviolet rays, etc., aging may occur, causing TPE and TPR materials to quickly lose their performance. We do not have a standard to determine the difference between
TPE and TPR, but industry insiders believe that the SEBS substrate is TPE and the TPR of SBS substrate. Then, the editor of Lien TPE manufacturer will analyze which one is more resistant to aging from the substrate. The SEBS chemical bond saturation is better than the SBS materials containing unsaturated carbon-carbon double bond . However, although SEBS has good aging resistance, it will destroy the material structure of SEBS when encountering long-term irradiation or effects of media with stronger oxidation properties, such as ozone, ultraviolet rays, etc., and the material ages and gradually deteriorates, causing cracks in the surface of the product.
Hydrogenation of refers to organic or polymer compound molecules containing unsaturated bonds (usually referring to carbon-carbon double bonds and triple bonds, and also containing unsaturated bonds between other atoms and ). Under appropriate operating conditions (such as temperature, pressure, initiator and catalysts, etc.), the hydrogen atom of is added or added polymerized with hydrogen atom , destroying the unsaturated double bonds or triple bonds, and forming a more stable chemical bond between the hydrogen atom and the original unsaturated bond atom (such as carbon-hydrogen single bond). After hydrogenation occurs, at the microscopic level, the material forms a more stable single bond structure, which enhances the chemical stability of the material, oxidation resistance and and yellowing resistance. Which one is more resistant to aging,
TPE or TPR? From the above information, we can see that TPE materials are more resistant to aging compared to TPR. However, for some products with high aging resistance demands, we still need to add some additives (antioxidants, anti-ultraviolet) when designing formulas, which can effectively prevent or delay the aging resistance of external strong oxidative media on the material.
