TPE & TPU Seals: Material Properties and Wide Applications
In modern industry and daily life, seals are widely used in various equipment and products as an indispensable component. Among them, TPE (thermoplastic elastomer) and TPU (thermoplastic polyurethane elastomer) are attracting attention due to their unique material properties and wide range of applications. This article will introduce TPE and TPU seals in detail, including their material properties, preparation methods, application fields and market trends.
TPE seals
TPE (thermoplastic elastomer) is a new type of polymer material made from a mixture of rubber and plastic. It combines the elasticity of rubber with the processing properties of plastic, and has excellent elasticity, abrasion resistance, cold resistance, heat resistance, and chemical resistance. These characteristics make TPE seals widely used in a wide range of applications.
Material properties
TPE seals have excellent elastic and tensile properties, which can maintain their original shape and elasticity when stretched and twisted, and are not easy to break. At the same time, it also has excellent abrasion and tear resistance, and is able to maintain good surface quality and integrity for a long time. In addition, TPE seals also have good cold and heat resistance, and can still maintain good elasticity and mechanical properties in low temperature environments, and are not easy to become brittle; Stability and durability even in high-temperature environments. In addition, TPE materials have good corrosion resistance to some chemicals, such as acids, alkalis, alcohols, etc.
Preparation method
The preparation methods of TPE seals mainly include injection molding, extrusion molding and blow molding. These preparation methods can be adjusted and optimized according to different product needs and process requirements to meet the application needs of different fields.
Fields of application
TPE seals are widely used in food packaging, medical equipment, auto parts, home appliance parts and other fields. In the field of food packaging, TPE seals comply with FDA food system certification, can be in direct contact with food, and are widely used in fresh-keeping box seals, bottle cap gaskets, wine bottle stoppers, oral liquids and high-end health care product packaging. In the field of medical devices, TPE seals have passed cytotoxicity, hemolysis tests, sensitization tests, chemical tests for drug compatibility and stability, etc., and the product has high purity, and can be applied to syringe pistons, catheters, large infusion gaskets, etc. In the field of auto parts, TPE seals are widely used in automotive door and window seals, hood seals, etc. due to their excellent elasticity and wear resistance. In the field of home appliance accessories, TPE seals are often used in refrigerator seals, washing machine seals, etc.
TPU seals
TPU (thermoplastic polyurethane elastomer) is a block copolymer consisting of polyurethane and soft segments such as polyether or polyester. It has excellent elasticity, abrasion resistance, cold resistance, heat resistance and chemical resistance, and also has many excellent functions such as high water resistance, moisture permeability, wind resistance, cold protection, antibacterial, mildew resistance, warmth, ultraviolet resistance and energy release. These characteristics make TPU seals widely used in many fields.
Material properties
TPU seals have the characteristics of a wide range of hardness, by changing the ratio of each reaction component of TPU, products of different hardness can be obtained, and with the increase of hardness, the products still maintain good elasticity and wear resistance. In addition, TPU seals also have the advantages of high mechanical strength, load-bearing capacity, impact resistance and shock absorption. At the same time, TPU material also has excellent chemical resistance, hydrolytic stability and microbial resistance.
Preparation method
The preparation methods of TPU seals mainly include injection molding, extrusion molding and blow molding. These preparation methods can be adjusted and optimized according to different product needs and process requirements to meet the application needs of different fields.
Fields of application
TPU seals are widely used in medical and health, electronic appliances, industry and sports and other fields. In the medical and health field, TPU seals are widely used in syringe pistons, catheters, large infusion gaskets, etc. due to their high purity and excellent biocompatibility. In the field of electronic appliances, TPU seals are widely used in wire and cable sheaths, connector seals, etc. due to their excellent insulation and weather resistance. In the industrial field, TPU seals are widely used in pipe seals, bearing seals, etc. because of their high strength and wear resistance. In the field of sports, TPU seals are commonly used in sports soles, sports equipment, etc.
Market trends
With the progress of science and technology and the development of industry, the application field of TPE and TPU seals continues to expand. In the future, with the continuous innovation of new material technology and the continuous expansion of application fields, the market demand for TPE and TPU seals will continue to grow. At the same time, with the improvement of environmental awareness and the popularization of the concept of sustainable development, environmentally friendly TPE and TPU seals will become the mainstream products in the market.
