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1. Molecular Formula: C36H70CoO4
2. Property: It is a purple granular, cobalt stearate was used for radial tires, steel wire conveyor belts and metal-rubber composite products.
3. Sepcification(%):
Co | 9.0min |
Softening Point(ºC) | 0.02max |
Ash Conten | 0.02max |
Heating decrement(105ºC) | 0.02max |
Cobalt Stearate (chemical formula: C₃₆H₇₀CoO₄) is a purple granular compound designed for rubber and composite material applications. It has a minimum cobalt content of 9.0%, with strict controls on key parameters: softening point, ash content, and heating decrement (all max 0.02% at 105℃). These specifications ensure it integrates seamlessly with rubber formulations, enhancing performance and durability. As part of our broader cobalt product line, it is manufactured to meet industrial standards for consistency and compatibility. Packaged in 25kg net bags, it is tailored for use in radial tires, steel wire conveyor belts, and metal-rubber composite products—critical components in automotive and industrial sectors.
• Excellent Rubber Compatibility: Cobalt Stearate blends easily with natural and synthetic rubbers, improving adhesion between rubber and metal (e.g., steel wires in conveyor belts). This compatibility reduces formulation time and ensures uniform performance across rubber products.
• Stable Physical Properties: Its low softening point, ash content, and heating decrement mean it maintains its structure during rubber processing (e.g., vulcanization). This stability prevents product defects like cracking or brittleness in finished rubber goods.
• Enhanced Durability for High-Stress Applications: In radial tires and conveyor belts, it improves resistance to wear, heat, and mechanical stress. This extends the lifespan of rubber products, reducing replacement costs for end-users.
• Batch-to-Batch Consistency: Our strict quality control ensures every shipment of Cobalt Stearate meets the same specifications—critical for manufacturers relying on uniform inputs to produce consistent rubber components.
Cobalt Stearate is a key additive in radial tire manufacturing, where it enhances the adhesion between rubber and the tire’s steel belt. This adhesion improves the tire’s structural integrity, reducing the risk of belt separation (a common cause of tire failure). It also boosts the tire’s resistance to heat buildup during driving, extending tread life and improving fuel efficiency.
In steel wire conveyor belts (used in mining, construction, and logistics), it acts as a bonding agent between rubber and steel wires. This bond prevents wire corrosion and ensures the belt can withstand heavy loads and repeated flexing. The low ash content of our Cobalt Stearate also reduces friction between the belt and pulleys, lowering maintenance needs.
It is used in metal-rubber composites (e.g., engine mounts, industrial seals) to improve the bond between metal substrates and rubber. This enhances the composite’s shock absorption and vibration damping properties, making it suitable for high-impact applications (e.g., automotive engine components, heavy machinery).
While primarily an adhesion promoter, Cobalt Stearate also supports the vulcanization process (rubber hardening). It interacts with vulcanizing agents to ensure even cross-linking of rubber molecules, resulting in a more durable, flexible final product.
It works with most rubbers, including natural rubber (NR), styrene-butadiene rubber (SBR), nitrile rubber (NBR), and ethylene-propylene-diene monomer (EPDM) rubber—making it versatile for different industrial applications.
The 9.0% minimum cobalt content ensures effective adhesion between rubber and metal. Lower cobalt levels may reduce bonding strength, leading to premature product failure (e.g., tire belt separation).
A low heating decrement (max 0.02%) means it does not lose weight or degrade when exposed to processing temperatures (typically 100-150℃ for rubber). This prevents voids or bubbles in the rubber, ensuring product quality.
While its primary use is in rubber, it can act as a stabilizer in some plastic formulations (e.g., PVC). However, we recommend consulting our technical team to confirm compatibility for non-rubber applications.
We stand out as a leading supplier of Cobalt Stearate, backed by our expertise in fine chemicals and customer focus:
• We offer a full product line of cobalt, nickel, copper, fluoride, tungsten, and rare earth compounds—so you can source all your industrial chemicals from a single, reliable supplier.
• Our team includes professional technical personnel who provide tailored support, from helping you optimize rubber formulations to troubleshooting application issues.
• We adhere to the business philosophy of “breaking old rules and embracing innovation,” constantly improving our production processes to enhance product quality and reduce costs.
• We provide excellent after-sales service, ensuring you are satisfied with your order—if you have questions or concerns, our team responds promptly.
• With over 40 key products covering industry, agriculture, pharmacy, and feed sectors, we understand the unique needs of rubber manufacturers and can adapt to your specific requirements.
