Thermoplastic elastomers
First of all, TPE has a layer of meaning, which is the collective name of all thermoplastic elastomers, including TPR, TPU, TPV, TPEE, TPO, TPAE, etc. The Chinese name is Thermo-Plastic Elastomer.
There are many types of thermoplastic elastomer TPE, and the types we have contacted are TPE, TPR, TPU, TPV, TPEE, TPO, TPAE, TPS, etc. How about it? Is it confusing? Let me make it for you Interpret the differences between different types of TPE.
In general, users or TPEs are often referred to as SEBS-based blended modified thermoplastic elastomers. The TPE of the SEBS system has a hardness ranging from 0 to 100A, and the appearance is transparent or natural particles. The burning flame is yellow or blue or yellow, the smoke is light, and it has an aromatic odor.
But in fact, when users find TPE, we should choose a suitable type of TPE according to his specific requirements, instead of TPE.TPU, thermoplastic polyurethane that is subjectively understood as a specific SEBS system at the beginning. It is made of MDI containing NCO functional group and POLYOL and 1.4BG containing OH functional group after extrusion and mixing. It has good elasticity, good physical properties, and various mechanical strengths. Therefore, it is widely used in processing methods such as injection, extrusion, calendering and dissolving into solution-type resins. It is a plastic material often used by plastic processing industry. Its products cover the range of industrial applications and civilian necessities. The appearance of TPU is transparent particles with a hardness of 65A ~ 80D. The combustion has a special odor and noisy sound.
TPO, polyolefin thermoplastic elastomer. It is a copolymer of various linear olefins or blended modified materials of linear polyolefins and other materials. Common EVA, POE can be regarded as this kind of elastomer. Appearance is translucent or transparent particles.
TPR, this is the name for users in Taiwan and even Asia. The first person to use SBS synthetic modification to produce a rubber, but this rubber is thermoplastic, the English meaning is Thermo-plastic rubber, abbreviated TPR. After that, the high-performance material SEBS appeared in the SBS family, and its blended modified material The production enterprise calls TPE to show the difference from TPR based on SBS modification. However, many users (especially Taiwan and Asia) still use the term TPR, and do not pay much attention to the differences in the materials of SEBS and SBS. In fact, there are still some performance differences between the TPE (TPR) of SEBS and SBS. TPR (based on the above analysis, in a sense TPE with SEBS is a material) the appearance is transparent or white particles, hardness 0 ~ 100A.
TPV is a blend of PP and EPDM dynamic vulcanizates. TPV can actually be regarded as a type of TPO, only because of its special dynamic vulcanization system, which gives it excellent comprehensive properties (the solvent resistance, high temperature resistance and mechanical strength of TPV are better than the TPE and TPR of the SEBS system) TPV is currently the most successful and widely used rubber-plastic blend elastomer, so TPV is listed separately. The application of TPV in the automotive industry will be favored by the industry. TPV combustion has the odor of petroleum of polypropylene PP, and the appearance is yellow or light yellow particles, usually with a hardness range of 50 ~ 100A.
TPEE, a polyester elastomer containing polyether hard segments and polyester soft segments in the molecular chain, has excellent mechanical strength, high temperature resistance and aging resistance. Hardness range: 30D ~ 80D.
TPS (TPES), this is a foreign name, the blended modified materials of styrene thermoplastic elastomer SBC (such as SEBS, SBS, SEPS, SIS) into TPS (TPES). But in fact, TPS Materials may have more than just this meaning. Therefore, if users are looking for consulting TPS materials, it is recommended to understand what products the users do, what are the specific requirements, and then evaluate whether the styrene elastomer SBC blended modified materials meet the requirements.