Natural Rubber Encyclopedia

Several methods to improve the wear resistance of natural rubber seals

Create Date:2020-03-30 09:07:50Click volume:460
Several methods to improve the wear resistance of natural rubber seals

As a traditional rubber variety, natural rubber has good elasticity, high strength, high abrasion resistance, high tensile strength and elongation at break, and can be used for production working at -20 ° C to 100 ° C without oil and corrosion media In the rubber seal ring, the wear resistance directly affects the sealing effect and service life of the seal ring. So how to further improve the wear resistance of natural rubber seals in actual production? You may wish to consider the following aspects.

1. Properly increase rubber hardness

In theory, increasing the hardness of natural rubber can enhance the resistance to deformation of the rubber. The sealing ring and the contact surface can be uniformly contacted under the effect of stress, which improves the wear resistance. In general, many natural rubber sealing ring processing companies usually increase the amount of sulfur by increasing the amount of sulfur. Or the amount of reinforcing agent to increase the hardness of the rubber. It should be noted that the hardness of the natural rubber seal ring should not be too high, otherwise the elasticity and cushioning effect of the seal ring will be affected, and eventually the wear resistance will decrease.

2. Adjust rubber elasticity

In order to reduce the cost of rubber products, natural rubber products manufacturers will fill a lot of rubber fillers, but too much rubber fillers will cause the rubber elasticity to decrease. It is necessary to properly control the amount, appropriately2LLYY0330 increase the elasticity of natural rubber, and reduce rubber viscosity and hysteresis. Reduce the coefficient of friction to achieve the effect of improving the abrasion resistance of natural rubber seals.

3. Adjust the degree of vulcanization

According to the characteristics of natural rubber vulcanization, rubber product manufacturers rationally adjust the vulcanization system and vulcanization parameters of natural rubber seals to increase the degree of vulcanization, and finally achieve the purpose of improving the wear resistance of rubber seals.

4. Improve rubber tensile strength

When using natural rubber to produce rubber seals, the use of fine-grained rubber fillers in the formula can increase intermolecular forces, and by increasing the tensile strength and constant tensile stress of the rubber, the abrasion resistance of natural rubber can be increased to a certain extent.

5. Reduce the surface friction coefficient of natural rubber seals

Adding a small amount of graphite, molybdenum disulfide and other materials to the formula of natural rubber seals reduces the surface friction coefficient of the rubber seals and improves the wear resistance of the seals.

When natural rubber is used to produce rubber seals, rubber product manufacturers can use latex recycled rubber and tire recycled rubber in an appropriate amount to reduce the cost of raw materials for rubber products and avoid problems such as the decrease in mechanical strength and wear resistance of rubber caused by excessive rubber filler. Reasonably designing the formula of natural rubber seals, appropriately adjusting the vulcanization process parameters, and selecting suitable low-cost rubber raw materials, can not only reduce the cost of rubber seals, but also improve the wear resistance of natural rubber seals.