Natural rubber has high elasticity, high mechanical strength, wear resistance and tear resistance, which can give rubber shock absorbers good elastic cushioning performance, and is an ideal raw material for the production of automobile shock absorbers, such as light vehicle engine shock absorbers. The price of natural rubber is high and fluctuates greatly, and the aging resistance is not good, so many automobile shock absorber manufacturers have begun to mix reclaimed rubber in natural rubber vehicle shock absorbers. So which reclaimed rubber can be used in combination with natural rubber to produce automotive shock absorbers? How much reclaimed rubber is appropriate?
1. Performance requirements for automotive shock absorbers
Rubber shock absorber is the use of rubber damping characteristics to achieve shock absorption effect, when the rubber is deformed by external force, the molecular chain of the polymer produces internal friction, so that a part of the vibration energy into heat energy and escape, the essence of shock absorption is the process of converting the vibrating mechanical energy into heat energy and then dissipating through the rubber elastomer.
2. Selection skills of reclaimed rubber for automobile shock absorbers
Natural rubber has good comprehensive properties, high mechanical properties and good processing technology properties, good elasticity and creep properties, small hysteresis loss, low heat generation, good tear resistance, wear resistance and fatigue resistance.When using reclaimed rubber to replace part of natural rubber in the production of automobile shock absorbers, it is recommended to choose reclaimed rubber varieties that are close to the performance of natural rubber and have good compatibility.
Latex reclaimed rubber has the basic performance characteristics of natural rubber, and its main purpose is to replace natural rubber to produce various rubber products, reduce costs, improve the aging resistance of finished products, and can be used in combination with natural rubber to produce automotive shock absorbers.The main components of tire reclaimed rubber are natural rubber, synthetic rubber and carbon black, which have good compatibility with natural rubber, and can not only reduce the cost of raw materials in the production of automobile shock absorbers, but also improve the performance of rubber processing technology and reduce vulcanization and return.Natural rubber can also be used in combination with butadiene reclaimed rubber to produce automobile shock absorbers, which can reduce costs and improve the elasticity and low-temperature performance of rubber.
3. Natural rubber/reclaimed rubber is used to produce vulcanization formula for automobile shock absorbers
80 parts of natural rubber, 20 parts of recycled rubber, 8 parts of zinc oxide, 1.3 parts of stearic acid, 2 parts of antioxidant D, 25 parts of carbon black N330, 1.8 parts of pine tar, 0.5 parts of accelerator CZ, 0.65 parts of accelerator DM, 0.25 parts of accelerator TMTD, 1.3 parts of sulfur; Total 140.8 copies.
When using reclaimed rubber to replace part of the natural rubber to produce automobile shock absorbers, rubber product manufacturers must reasonably design the formula of automobile shock absorbers containing reclaimed rubber according to the use occasions and performance requirements of the shock absorbers, strictly control the production process, especially the mixing and vulcanization processes, and discuss related issues with you later.
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