Automobile brake chamber rubber diaphragm is a sealing product used for transmission in the automobile brake chamber, which converts the pressure of compressed air into mechanical thrust, promotes the movement of the push rod, and realizes the braking of the car, which is mostly made of rubber and fiber fabric. Natural rubber has good elasticity, high mechanical strength, wear resistance and flexural resistance, and is an ideal raw material for the production of rubber diaphragm for automobile brake chambers; However, the price of natural rubber is high and fluctuates, so many manufacturers try to use low-cost replacement raw materials to natural rubber.
1. Performance requirements for rubber diaphragm in automobile brake chamber
(1) The rubber diaphragm of the automobile brake chamber requires the rubber material to have a certain tensile stress, and the finished product has good flexural resistance;
(2) The rubber diaphragm needs to have good elasticity and be able to withstand frequent load impact pressure;
(3) The rubber diaphragm of the brake chamber needs to be reinforced with fiber skeleton material, which requires the rubber material to have good adhesion to the fiber fabric;
(4) The rubber diaphragm needs to have good low temperature resistance and good aging resistance, and adapt to different use areas and seasons.
2. Which rubber raw materials can replace natural rubber to produce rubber diaphragm for automobile brake chambers
(1) Sub-brand natural rubber
Sub-brand natural rubber usually refers to the defective natural rubber that does not meet the standard requirements due to some indicators in the production process, which has the basic performance characteristics of natural rubber, and the price is lower than that of natural rubber, which can replace natural rubber to produce rubber diaphragm for automobile brake chambers and reduce the cost of raw materials.
(2) Natural latex reclaimed rubber
Natural latex reclaimed rubber is processed from waste natural rubber, waste latex and its products as raw materials, which has the performance characteristics of high strength, good elasticity, small specific gravity, tear resistance, etc., and can replace a certain proportion of natural rubber to produce rubber diaphragm for automobile brake chamber and reduce the cost of raw rubber. The price of black latex reclaimed rubber with the same index is lower than that of white latex reclaimed rubber, so when using latex reclaimed rubber for automobile brake chamber rubber diaphragm, it is recommended to choose black natural latex reclaimed rubber to reduce more raw material costs.
(3) Tire reclaimed rubber
Tire reclaimed rubber is a waste tire rubber part of the crushing, desulfurization and other processing of recycled rubber raw materials, the main components are natural rubber, synthetic rubber and carbon black, the effective rubber hydrocarbon content is about 30%, low price, high strength, good elasticity, small specific gravity, and natural rubber, general synthetic rubber has good compatibility, can be used with natural rubber to produce automotive brake chamber rubber diaphragm, effectively reduce costs.
The rubber diaphragm of the automobile brake chamber needs to have good flexibility, resilience, aging resistance and wear resistance, and is not easy to tear under the action of high pressure and force, and can reduce heat generation in the process of long-term reciprocating flexure. When using low-cost sub-brand natural rubber E5LYY220, latex reclaimed rubber, and tire reclaimed rubber to replace part of the natural rubber to produce rubber separators for automobile brake chambers, rubber product manufacturers also need to select appropriate rubber raw materials according to actual needs, reasonably determine the mixing ratio of low-cost rubber raw materials, and appropriately adjust the rubber formula, and will continue to discuss relevant issues with you in the later stage.
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