Seals technology innovation and development

Rubber seals are an important foundation element mechanical products, the manufacturing of high precision, as China's automobile manufacturing and the rapid growth of car ownership, seal products in the structure or materials are required on both high-precision technology and equipment support. In recent years, specializing in the production of seals in the part of enterprises to adapt to market positioning, timely adjustment of industrial structure and product mix, the rapid development and growth. Rapid increase in production output at the same time, in the production and testing equipment, experiments have also done a great investment.
◆ rubber seal material developments
Nitrile rubber seals used, hydrogenated nitrile, fluorine rubber, acrylic rubber, PTFE and other special rubber material formulation and processing technology research, improve material performance and utilization is still applicable to the focus. Applications of nanomaterials will enhance the mechanical properties of rubber material and special features. April 1 this year, the National Standardization Commission issued the first batch of four execution of nanomaterials GB, there is a rubber "ZnO" standard.
Special engineering elastomers replace low performance oil and rubber; bright surface of the rubber surface treatment; through nanotechnology rubber material modification and application of liquid rubber material, in recent years have made some progress. Especially some recent application of new materials for rubber cable sealing technology has played a great role in promoting.
The application of the padlock seals is relatively weak thermoplastic elastomer (TPE) having a vulcanized rubber physical properties and processability of the thermoplastic resin technology, molding process does not require vulcanization, which is the third generation of rubber. The main varieties of TPO, TPV, TPU has been widely used in the world: TPV applications in the automotive average annual growth of 15%, is generally EPDN and PP full crosslinking compound, which combines the high tensile strength, oil heat, etc. performance, long resistant to 150 ℃ hot oil working conditions, can be used to replace the production of automotive EPDM seals and other products; TPO is currently using more EPDM with polyethylene component composition, production process is mechanical mixing and dynamic vulcanization. Dynamic vulcanization production of the TPO. Rubber component is as high as 60 to 70%, abrasion resistance, ozone resistance, high tear strength, compression deformation is small, the overall performance is better than EPDM vulcanized rubber.
United States, Western Europe and Asia continue to build TPO production unit; TPU plastic and has excellent processing properties and physical properties of rubber, and its wear resistance, low temperature resistance, excellent radiation performance in the automotive, aerospace, medical and health , household items, military supplies and other industrial applications have great progress, TPU can be widely used in automotive shock absorber, bushings, bearings, bushings, airbags and other components.