Product Name: Cobalt Boroacylate/Cobalt Boron Neodecanoate/Cobalt Boroacylate Adhesion Promoter/Cobalt Adhesion Promoter
Cobalt Boroacylate: RCo-B23
Usage: It serves as an adhesion promoter for bonding rubber to brass-plated and galvanized steel cords, widely applied in steel radial tires and other industrial rubber articles, including conveyor belts, tire retreading materials, custom rubber components, sealing gaskets and rubber rollers.
Components: 68% organic acid 22% - 23% Cobalt
Product Overview
Cobalt Boroacylate is a high-performance cobalt salt rubber-to-metal adhesion promoter with blue-violet granular appearance. It is specially developed for interfacial bonding between rubber and brass-plated/galvanized steel wire. During vulcanization, it forms a stable interfacial bonding layer to greatly enhance the adhesive strength between rubber matrix and steel cords.
Technical Specifications
|
Appearance |
Bluish violet granule |
|
Cobalt content% |
22.5±0.5 |
|
Heating loss% |
105℃ ≤1.2 |
|
Heptane insoluble % |
8.0±1.0 |
|
Boron (qualitative) |
Qualitative |
Mode of action
Cobalt Boroacylate features favorable solubility, dispersibility and activation, alongside simple metering, handling and transportation. It delivers exceptional adhesive performance at the bonding interface between rubber and brass-plated or galvanized steel cords. Additionally, it exhibits remarkable resistance to thermal oxidation, salt, moisture and corrosion.
Application
- Steel-belted radial tires (passenger tires, truck tires)
- Steel cord reinforced conveyor belts
- High pressure steel wire reinforced rubber hoses
- Steel-reinforced rubber seal
Product advantages
- Superior bonding performance, realizing strong adhesion between rubber and steel cord in NR, synthetic rubber and blended compounds.
- Excellent anti-aging property: resistant to heat, oxygen, moisture, steam and salt water corrosion. The bonding strength declines slightly under long-term service conditions.
- Good solubility, dispersibility and activation. It features favorable mixing processability and convenient metering, distributing uniformly in rubber compound to guarantee consistent bonding effect.
- Boron-cobalt composite structure improves anti-corrosion performance of steel reinforcement and reduces risk of interfacial debonding caused by metal rust.
Storage and guarantee period
Store in a cool and dry location. The shelf life is 1 year when kept in its original packaging.
Packing
Packed in cartons with plastic bag liners.
Net weight: 25kg/carton
FAQ
1. What is the core functional advantage of Cobalt Boroacylate RCo-B23 compared with ordinary cobalt adhesion promoters?
Different from traditional single cobalt salt adhesives, RCo-B23 adopts a unique boron-cobalt composite structure. It not only efficiently improves the interfacial bonding strength between rubber and steel cords during vulcanization, but also significantly enhances the thermal oxidation resistance, moisture resistance and salt corrosion resistance of the bonding layer. It effectively solves the problem of bonding attenuation and debonding of rubber-metal composite products under high temperature, humid and long-term dynamic load conditions, and greatly extends the service life of finished products.
2. What are the processing characteristics of RCo-B23 during rubber compounding?
This product has excellent solubility, dispersion and activation performance. It can be quickly and evenly dispersed in rubber compounds during the mixing process without agglomeration. Meanwhile, it features simple metering, convenient operation and transportation, stable processing adaptability, and will not affect the basic physical properties and vulcanization efficiency of rubber, which is suitable for large-scale industrial continuous production.
3. What mainstream industrial scenarios is RCo-B23 applicable to?
As a high-performance rubber-to-metal adhesion promoter, RCo-B23 is widely used in steel-belted radial passenger tires, truck tires, steel cord conveyor belts, high-pressure steel wire braided hoses, tire retreading materials, rubber rollers, sealing gaskets and other rubber-metal composite industrial products, covering most mainstream rubber reinforcement industries.
4. What types of steel cords is RCo-B23 suitable for bonding?
RCo-B23 is specially formulated for metal reinforced rubber systems, fully compatible with brass-plated steel cords and galvanized steel cords. It is widely applicable to radial tires, steel cord conveyor belts, high-pressure rubber hoses and other core products, and maintains stable and excellent adhesion performance in both natural rubber and synthetic rubber compound systems.
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