Rubber powder is a powdered product obtained by physical or chemical treatment of waste rubber tires or other rubber products, which is a very cost-effective rubber raw material in the rubber industry, which can reduce the cost of rubber products and improve product performance. In the rubber industry, rubber powder is widely used, and the specific applications are as follows.
1. Rubber powder is directly molded
Vulcanizing agents, accelerators and plasticizers can be added to the rubber powder, which can be directly vulcanized after mixing and matching, and are mainly used to produce rubber products such as mechanical gaskets, buffer pads, fenders, and sound-absorbing materials. Rubber powder direct molding can also prepare color rubber products, using double-layer composite process, composite molding or laminating a thin layer of colored rubber and plastic film on the product to cover the black, make decorative plates, make decorative plates; If necessary, the surface can be roughened to prevent slippage and used for paving materials.
The direct molding of rubber powder to produce rubber products has the advantages of less compounding agent, simple process and low production cost; However, the production efficiency is low, and the mechanical properties of the products are poor.
2. Application of rubber powder in various rubber products
(1) Tire: The addition of rubber powder to the tire formula can improve the extrusion performance of tire rubber, improve the flexural resistance of tire tread rubber, and then improve the mileage of tires. For example, if about 5 parts of rubber powder are mixed with tire tread rubber, the mileage of truck tires can be increased by about 25% compared with tire E4LYY75 without rubber powder, and the mileage of passenger car tires can be increased by about 8%. When fine rubber powder is added to the tread rubber, the amount of rubber powder can reach more than 60 parts, and the dynamic performance of the tread rubber of passenger car tires is good, and the number of flexion and cracking is reduced.
(2) Conveyor belt: about 30 parts of modified rubber powder are mixed with the covering rubber of the ordinary fabric core conveyor belt, which has good mixing process performance, small deformation of rubber material when calendering out of the piece, increases the stiffness of rubber and reduces the cost of raw materials.
(3) Hose: The middle layer of the buried suction hose and the inner layer of the rubber can be mixed with more than 80 mesh of rubber powder, and the mechanical properties of the finished product are good.
(4) Rubber shoes: Mixing an appropriate amount of rubber powder in the midsole and outsole of rubber shoes can effectively reduce costs and improve product wear resistance and comfort.
3. Rubber powder is used as a separator for raw rubber or rubber compound granulation
In actual production, when carbon black, talcum powder or metal fatty acid soap are used as separators, problems such as adhesion, vulcanized rubber fatigue resistance and poor thermal and oxygen aging resistance may occur. As a separator, rubber powder can effectively improve these deficiencies and improve the quality and performance of the product.
4. Rubber powder to produce reclaimed rubber
With tire rubber powder as raw material, the tire reclaimed rubber manufactured by desulfurization, refining and other processes has the basic performance characteristics of rubber, the effective rubber hydrocarbon content is about 30%, and has the performance characteristics of high strength, good elasticity, wear resistance, tear resistance, etc., which can be used alone or combined with natural rubber and general synthetic rubber to produce various types of rubber products, reduce the production cost of rubber products and improve the performance of rubber processing technology, and improve the aging resistance of finished products.
When rubber powder is used in the rubber industry, especially in rubber products such as tires, hoses, tapes, rubber shoes, etc., the process performance can be optimized and cost can be reduced by adjusting the dosage of rubber powder and the formula of rubber products. In actual production, rubber powder can also be used in the plastic industry, modified asphalt, etc., and related issues will be discussed with you later.
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