The main function of the pillow pad is to slow down the shock and vibration generated when the train passes the track and reduce the interference to the signal system. The pillow pad made of rubber as the main raw material has the characteristics of good elasticity, good shock absorption, and electrical insulation. It solves the problems of poor elasticity of concrete pillow and large impact on vehicles and railway track beds, and better guarantees the signal system. stability. In actual production, natural rubber is the main raw material for the production of rubber pillow. What problems should be paid attention to during use?
1. Mixed with synthetic rubber to improve performance
Natural rubber has the characteristics of good elasticity, high mechanical strength, cold resistance, electrical insulation, and easy processing. It is an ideal raw material for the production of rubber pillow pads; but its own heat resistance and weather resistance are poor. In contrast, the processing performance of styrene-butadiene rubber is close to natural rubber, and its heat resistance and 2YLYY924 weather resistance are better than natural rubber; butadiene rubber has excellent elasticity, cold resistance and good abrasion resistance. The combined use of natural rubber with a proper amount of styrene butadiene rubber and butadiene rubber can significantly improve the aging resistance of the rubber pillow pad and prolong the service life of the finished product.
2. Blending with rubber renewable resources to reduce costs
Processing waste rubber, mainly from waste automobile tires, into rubber powder and reclaimed rubber is the main method of recycling waste rubber. In actual production, rubber powder and reclaimed rubber can be used as the main material or blended with other rubbers, which significantly reduces the production cost of rubber products. When using natural rubber, natural rubber/styrene-butadiene rubber/butadiene rubber to produce rubber pillow pads, a certain proportion of reclaimed rubber and waste rubber powder can be mixed to effectively reduce the cost of raw materials while ensuring product quality.
3. Reasonably design rubber track pad matching system
When using natural rubber or natural rubber/general synthetic rubber to produce rubber pillow pads, it is recommended to use a high-sulfur and high-accelerating vulcanization system to meet the process requirements; at this time, it is necessary to pay attention to the changes in the thermal and oxygen aging properties of the rubber pillows. The natural rubber pillow pad reinforcement and filling system can be used in conjunction with carbon black, calcium carbonate, clay, talcum powder, etc.; when choosing the type and amount of carbon black, it is necessary to pay attention to the electrical properties of the product. The combination of two or more antioxidants among 4010, 4010NA, A, and RD can further improve the comprehensive performance of rubber pillow pads.
When using natural rubber as the main raw material to produce rubber pillow pads, the softening system can directly select ordinary rubber softeners. In the production of natural rubber pillow pads, it is not only necessary to select appropriate rubber raw materials and reasonable design formulas, but also to appropriately adjust the production process parameters. The editor will have the opportunity to discuss related issues with you later.
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