TPVs

TPVs, or Thermoplastic Vulcanizates, are a class of TPEs, or Thermoplastic Elastomers. They are alloys of a thermoplastic polymer, typically polypropylene, and a vulcanized rubber, such as EPDM. The vulcanization process, where rubber is cross-linked to improve its elastic properties, is carried out during the melt blending stage with the thermoplastic. This unique combination results in materials that exhibit the processing ease of thermoplastics while retaining the performance characteristics of thermoset rubbers, like good elasticity, temperature resistance, and chemical resistance.

TPVs are known for their excellent resilience, good compression set, and resistance to oils, fuels, and weathering. They can be molded using standard injection molding and extrusion techniques, making them a cost-effective alternative to traditional thermoset rubbers in many applications. Their ability to be recycled is also a significant advantage.

Common applications for TPVs include automotive components such as seals, gaskets, hoses, and bellows, where their durability and resistance to harsh environments are crucial. They are also used in consumer goods, industrial equipment, and medical devices. The specific properties of TPVs can be tailored by adjusting the ratio of the thermoplastic to rubber, the type of rubber used, and the addition of various fillers and additives. This versatility allows TPVs to meet a wide range of performance requirements.