The rubber brake cup can play the role of pressure transmission and sealing in the hydraulic brake system, clutch control system and afterburner pump system of the vehicle. At present, most rubber cups on the market are made of natural rubber, styrene butadiene rubber, ethylene propylene rubber, nitrile rubber or reclaimed rubber and molded with rubber. The rubber materials used for brake cups working in different brake fluids are different. The rubber cup that works in alcohol brake fluid for a long time can use latex reclaimed rubber in an appropriate amount to effectively reduce the cost of raw materials.
1. Tips for selecting latex reclaimed rubber
Rubber cups that work in alcohol-based brake fluids at room temperature are generally processed from natural rubber as the main raw material. The use of these with styrene-butadiene rubber can further improve the heat resistance and aging resistance of the product. Latex reclaimed rubber is processed from waste natural rubber and waste natural rubber products as the main raw materials. It retains the basic performance characteristics of natural rubber. It has good compatibility with natural rubber and general synthetic rubber. It can be used with natural rubber to produce brake cups. Effectively reduce the cost of raw materials under the premise of ensuring product quality.
Latex reclaimed rubber can be divided into white latex reclaimed rubber, black latex reclaimed rubber and various colored latex reclaimed rubbers according to color. Among them, the black natural reclaimed rubber 2YLYY1012 with the same index has a lower price than white latex reclaimed rubber. Rubber brake cups are mostly black bowl-shaped products. When using latex reclaimed rubber to replace natural rubber to reduce costs, it is recommended to use black latex reclaimed rubber that is close to the indicators of the rubber cups, which is more cost-effective.
2. Reference formula for producing rubber cups from natural rubber
100 parts of natural rubber, 0.75 parts of sulfur, 2.75 parts of accelerator, 3 parts of antioxidant, 12.5 parts of zinc oxide, 2 parts of stearic acid, 5 parts of plasticizer, 50 parts of carbon black, 10 parts of calcium carbonate; Total: 186 parts .
3. Mixing skills of latex reclaimed rubber
Latex reclaimed rubber is the main raw material to replace high-priced natural rubber to reduce costs. Reasonably blending into rubber cups suitable for alcohol-based brake fluids can effectively reduce the cost of raw materials. In actual production, brake cup manufacturers can select appropriate latex reclaimed rubber products according to actual needs, comprehensively consider the specifications of the cup finished product, latex reclaimed rubber, etc., and reasonably determine the amount of reclaimed rubber blended; appropriately adjust the sulfur in the formula to promote The dosage of additives, reinforcing agents and fillers can further optimize product quality.
In actual production, reclaimed latex rubber can also be blended into rubber brake cups with styrene butadiene rubber, natural rubber/styrene butadiene rubber combined rubber as the main raw material. The specific usage and dosage will be discussed with you when the editor has the opportunity.
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