TPE is a general term for thermoplastic elastomers; TPV is just one specific type within this category, which also includes SEBS, TPO, and POE.
TPE is a material based on SEBS blended with other compounds. It combines the high elasticity of rubber with the thermoplasticity of plastic. It offers a soft touch, as well as resistance to weather, fatigue, and temperature extremes. It features excellent processing characteristics and does not require vulcanization.
Thermoplastic Vulcanizate (TPV)-also known as polyolefin alloy thermoplastic elastomer-is an elastomer formed by blending PP and EPDM. TPV is an eco-friendly, low-carbon composite material that combines rubber-like properties (such as high elasticity and low compression set) with plastic-like processing characteristics (simple manufacturing). Its elasticity, resistance to compression set, environmental durability, and aging resistance are comparable to EPDM rubber, while its oil and solvent resistance is comparable to general-purpose chloroprene rubber.
Differences between TPE and TPV:
1. TPV is classified as a thermoplastic dynamic vulcanizate, whereas TPE is classified as a thermoplastic elastomer. However, unlike elastomers based on SEBS, TPV is categorized specifically as a rubber-like elastomer.
2. TPV offers better heat resistance than TPE. Generally, TPE can withstand temperatures of 130–150°C before aging and cracking occur; usage below 120°C is recommended. In contrast, TPV functions normally between -60°C and +135°C, with a peak heat resistance of +150°C under no-load conditions.
3. TPV exhibits superior aging and weather resistance compared to TPE, resulting in a longer service life for TPV sealing strips.
4. TPE has a hardness range of 0A–120A, while TPV ranges from 25A to 120A (70D). Compared to TPV, TPE offers a wider hardness range, extending down to an ultra-soft 0A; consequently, ultra-soft TPE is frequently used in the adult products industry.