By Qingdao Chengda Huili Import and Export Co., Ltd.
In the hierarchy of rubber accelerators, N,N-Dicyclohexyl-2-benzothiazolesulfenamide—better known as DCBS or DZ—occupies a premium position. It is not just another chemical; it is the industry’s best defense against “scorch” (premature curing) and the key to bonding rubber to steel.
For manufacturers of steel-belted radial tires and heavy-duty conveyor belts, selecting the right DCBS source is a strategic decision. Qingdao Chengda Huili Import and Export Co., Ltd. is here to ensure that decision pays off with consistent, high-purity supply.
What is Accelerator DCBS (DZ)?
DCBS is a sulfenamide accelerator, similar to CBS (CZ) and TBBS (NS), but with a crucial structural difference: it contains two cyclohexyl rings.
This larger molecular structure makes DCBS the most delayed-action accelerator in its class.
The Technical Edge: Why Choose DCBS?
While faster accelerators speed up production, speed can be the enemy of adhesion. DCBS is chosen when the rubber compound needs time to flow and bond before the curing process locks it in place.
1. Unmatched Scorch Safety DCBS provides the longest “induction period” (delay before cure starts) of all common sulfenamides.
- The Benefit: This allows for safe processing at higher temperatures or higher speeds without scorching. It is ideal for complex extrusions or thick cross-section parts where heat dissipates slowly.
2. Superior Steel Cord Adhesion This is the defining characteristic of DCBS.
- The Mechanism: Because DCBS cures slowly, it allows the rubber compound to fully wet the surface of brass-plated steel cords before cross-linking begins.
- The Result: A significantly stronger bond between the rubber and the steel reinforcement layer. This is vital for the safety and longevity of radial tires.
3. Storage Stability DCBS is exceptionally stable in storage. It resists absorbing moisture and maintains its free-flowing powder form longer than many other accelerators, reducing waste in your warehouse.
Core Applications
Our DCBS (DZ) is engineered for applications where failure is not an option:
- Steel-Belted Radial Tires: The primary accelerator for the wire coat (skim) compound that bonds to the steel belts.
- Steel Cord Conveyor Belts: Used in mining and heavy industry belts requiring extreme durability and metal adhesion.
- Large Rubber Articles: Essential for massive molded parts (like marine fenders) where the interior of the rubber must not cure before the mold is completely filled.
The Qingdao Chengda Huili Difference
When manufacturing steel-reinforced rubber, purity is paramount. Impurities in the accelerator can lead to corrosion of the steel cord or “blooming” on the rubber surface.
Qingdao Chengda Huili Import and Export Co., Ltd. guarantees:
- Strict Salt Content Control: We monitor salt byproducts meticulously to ensure they do not interfere with the adhesion interface.
- High Fineness: Our DCBS is processed to a fine particle size to ensure perfect dispersion within the rubber matrix, eliminating weak spots in the tire wall.
- Reliable Availability: As a specialized importer and exporter, we maintain robust inventory levels to buffer our clients against market volatility.
Secure Your Adhesion, Secure Your Reputation
In the tire industry, the bond between steel and rubber is the bond between you and your customer. Do not leave it to chance.
Contact Qingdao Chengda Huili Import and Export Co., Ltd. today to discuss your requirements and request a sample of our premium Accelerator DCBS (DZ).
Email:info@ctp-pvi-chem.com