The air spring is composed of upper and lower cover plates and a rubber capsule. The main function of the rubber capsule is to withstand the tensile-compression force during the working process, including the inner rubber, outer rubber, cord layer and forming traveler. In actual production, the outer rubber of the air spring bladder is mostly made of natural rubber. The reasonable use of reclaimed rubber powder can effectively reduce the cost of raw materials while ensuring the performance of the outer rubber of the air spring.
1. Reclaimed rubber powder selection skills
When using reclaimed rubber powder to reduce the cost of the outer layer of the air spring bladder, you can choose natural reclaimed rubber powder, which has a better blending effect in natural rubber, butadiene rubber and other general rubbers. The use of natural reclaimed rubber powder with high fineness and no impurities can to a certain extent achieve the multiple purposes of increasing the amount of rubber powder, improving the performance and life of the air spring, and reducing the cost of more raw materials.
2. Usage and dosage of reclaimed rubber powder
In actual production, blindly increasing the amount of natural reclaimed rubber powder in the outer layer rubber formulation of the air spring rubber bladder will affect the service life of the air spring. Under normal circumstances, adding 20-30 parts of natural reclaimed rubber powder to the outer rubber formulation of the air spring bladder can reduce the raw material cost by 10%-15% on average. The finished products can meet various indicators such as aging resistance and fatigue resistance. National standard.
3. Method for optimizing the performance of the outer layer of the air spring bag containing reclaimed rubber powder
The traditional air spring bladder outer layer rubber is processed from natural rubber as the main raw material, and adding an appropriate amount of natural reclaimed rubber powder can reduce the raw material cost. Compared with natural rubber, butadiene rubber has better cold resistance, abrasion resistance and elasticity; the combination of natural rubber and butadiene rubber to prepare the outer layer of the air spring capsule containing reclaimed rubber powder can improve the physical and mechanical properties of the air spring. Flexibility, ozone aging resistance, etc.
In actual production, selecting sulfur vulcanization for the outer layer rubber formulation of the air spring rubber capsule containing natural reclaimed rubber powder and appropriately increasing the amount of anti-scorching agent can further improve the mechanical properties, fatigue resistance and aging resistance of the air spring outer layer rubber 2LLYY814 Wait. Rubber product manufacturers can also use fiber materials in the formula to increase the service life of the air spring.
4. Other raw materials to reduce the cost of air springs
To reduce the production cost of air springs, rubber product manufacturers can also use appropriate amounts of chlorinated butyl reclaimed rubber in the inner rubber of the air spring bladder, and use latex reclaimed rubber in the outer rubber of the bladder. If necessary, natural latex reclaimed rubber can be combined with natural regenerated rubber. The combined use of rubber powder reduces more raw material costs and production costs.
The air spring can reduce the natural frequency of the vehicle in the vehicle suspension system, which requires good shock absorption and shock isolation performance. In actual production, the outer layer rubber of the air spring rubber bladder can be mixed with natural rubber with an appropriate amount of natural reclaimed rubber powder, or natural rubber/butadiene rubber and reclaimed rubber powder can be used together, or directly use butadiene rubber and add an appropriate amount of natural rubber. Reclaimed rubber powder reduces more costs; later editor will continue to share with you other issues that need to be paid attention to in the air spring production process.
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