TPE or TPR? Let me first learn about their physical properties. TPE and TPR are both styrene-based thermoplastic elastomers. They are currently the most produced thermoplastic elastomers in the world and have the most similar properties to rubber. The substrates of TPE and TPR are made of styrene-butadiene-styrene block copolymer (SBS) and styrene-ethylene-butene-styrene block copolymer (SEBS).
SBS performance characteristics: It has excellent tensile strength, large surface friction coefficient, good low temperature performance, excellent electrical performance, good processing performance, and high transparency. SBS contains unsaturated and double bonds, so its stability and aging resistance are poor. Because its molecules are unsaturated, it can be painted and glued, which is suitable for toy doll products. Because of its molecular unsaturation, hydrolysis resistance and poor weather resistance, it is only suitable for indoor products. Performance characteristics of SEBS: Because of its molecular saturation, it is difficult to paint and dehydrate, and its transparency is worse than that of SBS (and the higher the hardness, the worse the transparency). SEBS does not contain unsaturated and double bonds. SEBS has good ultraviolet stability, antioxidant and thermal stability, and hydrolysis resistance.
Environmental testing standards for raw materials and finished products are similar in different industries. TPE and TPR do not contain heavy metals, EN71, ROHS, do not contain plasticizers (phthalate plasticizers), and do not contain SVHC high-focus substances specified in REACH. In addition to the risk of exceeding the test results for organic solvent residue testing, most environmental testing standards for TPE and TPR can pass.
Here only targets environmental testing standards for TPR and TPE raw materials. For TPE and TPR finished products, other environmentally friendly and safe materials may be introduced during processing, resulting in differences in the test results of the finished products from the raw material particles. The recycled materials TPE and TPR, because other impurities that may be introduced during the recycled granulation process will also cause failure to meet the standards for environmental protection testing. Which one is environmentally friendly,
TPE or TPR? The answer is that both are environmentally friendly materials. It is precisely because TPE and TPR materials meet environmental protection testing standards and can replace PVC materials, so many industries such as adult products, medical care, automobiles, electronic communications, etc. regard them as their preferred materials. If you need TPE and TPR materials related test reports, you can request them from the sales representative of the Lien TPE manufacturer.
