Customer information: Hebei XX Rubber Products Factory
Product used: Hongyun Tire Reclaimed Rubber #3
Products manufactured: ordinary flexible rubber joints
Case Background: Hebei XX Rubber Products Factory mainly produces rubber joints, rubber flexible connectors, rubber hoses, and other rubber products. Ordinary flexible rubber joints use natural rubber as the main raw material. With fluctuations in procurement prices E6LYY615 natural rubber, production costs are unstable, especially with fierce price competition for orders for ordinary rubber joints. Relying solely on natural rubber production squeezes profit margins. While ensuring the strength, flexion resistance, wear resistance, and aging resistance of rubber joints, it is hoped to find a rubber material that is more compatible with natural rubber and has stable prices to partially replace natural rubber.
After formula analysis and sample trials, the technicians decided to use a combination of Hongyun #3 tire reclaimed rubber and natural rubber for production.
Reasons for Choose:
Tire reclaimed rubber is made mainly from waste tires and processed through crushing, desulfurization, and refining processes. It has good plasticity, flowability, and physical and mechanical properties, and is highly compatible with natural rubber. Proper use of tire reclaimed rubber in ordinary flexible rubber joints not only reduces the amount of natural rubber used, but also improves the processing performance of the rubber compound.
#3 tire reclaimed rubber uses the entire 900 tire as the main raw material, processed through processes such as cleaning, crushing, magnetic separation, desulfurization, and sheet molding. It features high strength, low specific gravity, and good elasticity, and can replace some natural rubber in producing ordinary rubber joints, reducing raw material costs; Tire reclaimed rubber has good plasticity and flowability. Using natural rubber together with #3 tire reclaimed rubber can improve the processing performance of the rubber compound and reduce production energy consumption.
Key Production Points:
When producing ordinary flexible rubber joints using natural rubber and tire reclaimed rubber together, strict control of the reclaimed rubber dosage ratio is required, and adjustments to the vulcanization system, carbon black, and softener must be made accordingly. During production, natural rubber is first thoroughly plasticized, then tire reclaimed rubber is added to soften the thin layer to ensure thorough mixing of the two compounds, followed by the addition of activators, antioxidants, carbon black, and softeners. Before formal mass production, small sample trials are conducted to test Mooney viscosity, scorch time, and vulcanization characteristics to determine reasonable vulcanization process parameters.
Usage Effects:
Ordinary flexible rubber joints produced using natural rubber and tire reclaimed rubber are evenly mixed, forming stably, and shrinkage and deformation of semi-finished products are effectively controlled. The vulcanized product has a complete appearance, good elasticity, wear resistance, and flexural resistance, meeting the requirements for rubber joints under normal working conditions.
Case Summary:
Using tire reclaimed rubber to produce ordinary flexible rubber joints offers the following advantages:
(1) Cost reduction. The price of tire reclaimed rubber is much lower than that of natural rubber. By reasonably replacing some natural rubber while meeting the performance requirements of rubber joints, raw rubber costs can be reduced.
(2) Improving the processing technology of rubber materials. Tire reclaimed rubber has good plasticity and flowability; when used together with natural rubber, it helps improve mixing and molding performance; It also reduces the tendency for vulcanization to revert.
(3) Improve rubber aging resistance. Proper use of tire reclaimed rubber can balance the wear resistance, flexing resistance, and aging resistance of rubber joints.
(4) Improving molding stability. Unvulcanized rubber paired with reclaimed rubber exhibits much less expansion and shrinkage during processing than unvulcanized rubber made only from new rubber; Reasonable use of tire reclaimed rubber in flexible rubber joints made mainly from natural rubber can improve compound flow and dimensional stability, which is helpful for molding rubber joints with more complex structures.
(5) Reducing the impact of raw material price fluctuations. The price of tire reclaimed rubber is relatively stable, and when used reasonably with natural rubber, it can reduce enterprises' dependence on a single natural rubber raw material.
For ordinary flexible rubber joints, tire reclaimed rubber is not simply "adding more to reduce costs"; the key is to chosse reclaimed rubber varieties based on the actual performance requirements of the inner and outer layers and reasonably control the dosing ratio. At the same time, thorough batch quality inspection and sample trial production are necessary to reduce the amount of natural rubber used while maintaining stable production performance of rubber joints.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits