The natural rubber has high strength, good elasticity, and low permanent deformation. It is widely used in the production of various rubber sealing products, such as O-rings, sealing gaskets, etc. The products have a good sealing effect and long service life. In actual production, poor aging resistance is the shortcoming of natural rubber, so not all sealing products can use natural rubber. When using natural rubber to produce sealing products, rubber product manufacturers also need to master certain skills to produce sealing products with better performance, longer life, and higher cost performance.
1. Characteristics and application scope of natural rubber sealing products
Rubber sealing products made of natural rubber as the main raw material have high mechanical strength, good resilience, high wear resistance, tear-resistance and other properties. They generally work at temperatures from -50°C to 80°C and are widely used in the production of Brake cups and aprons of automobile braking systems, or used in combination with other types of rubber to produce sealing strips, gaskets, high-vacuum sealing rings, etc. In actual application, natural rubber sealing products cannot work in mineral oil and hot air.
2. Selection of rubber raw materials for natural rubber sealing products
When using natural rubber to produce sealing products, there are different levels of requirements for mechanical strength, compression deformation resistance, medium resistance, wear resistance, aging resistance, heat resistance, and flex resistance of the rubber used. Rubber product manufacturers need to determine whether natural rubber can be used according to actual needs. In actual production, common raw and auxiliary materials are selected for processing and production, such as sulfur, accelerator DM, carbon black, paraffin, solid coumarone, anti-aging agent RD/MB, etc.
3. Production methods of natural rubber sealing products
In the production process of rubber sealing products made of natural rubber, natural rubber can be used alone, or an appropriate amount of styrene-butadiene rubber, butadiene rubber, and neoprene can be added to the formula of natural rubber sealing products to improve the vulcanization of natural rubber sealing products. performance, aging resistance, etc. Or use the appropriate amounts of latex reclaimed rubber, tire reclaimed rubber, isoprene reclaimed rubber, etc. in the formula of natural rubber sealing products to improve the processing performance of natural rubber sealing products while reducing costs.
Reasonable selection of rubber raw materials for natural rubber sealing products and reasonable design of the production formula of sealing products can further improve the aging resistance, low-temperature elasticity, and flex resistance of rubber products; when using reclaimed rubber to reduce the cost of raw materials for rubber sealing products, rubber product manufacturers need to make appropriate adjustments The formula can reduce more raw material costs on the basis of keeping the physical properties unchanged. In the later period, the editor will have the opportunity to continue to discuss with you the production process and performance of rubber sealing products.
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