Rubber accelerator are essential chemicals used in the vulcanization process. They help raw rubber cure faster, become more durable, and perform better in different applications. Whether you’re making tires, gloves, seals, or cables, choosing the right accelerator affects product quality, worker safety, and environmental impact.
Three widely used accelerators are ZDBC, ZDEC, and TMTD. Each one has unique properties that make it suitable for specific uses. This guide breaks down their performance, safety, and sustainability in a simple format.
What Is ZDBC?
ZDBC (Zinc Dibutyldithiocarbamate) is a non-toxic rubber accelerator used in light-colored and latex rubber compounds. It offers fast curing and is suitable for food-grade and medical rubber products.
ZDBC Overview Table
| Feature | Details |
|---|---|
| Chemical Type | Zinc-based dithiocarbamate |
| Curing Speed | Fast |
| Toxicity Level | Low |
| Color Staining | Non-staining |
| Best Applications | Latex gloves, baby products, soft rubber |
| Temperature Suitability | Low to medium |
| Environmental Impact | Considered eco-friendly |
| Compliance | REACH compliant rubber additive |
| Common Use Keywords | rubber accelerator ZDBC, food-grade rubber |
ZDBC is ideal for manufacturers looking for safe rubber vulcanization and low toxicity rubber chemicals. It may need a secondary accelerator for high-performance curing.
What Is ZDEC?
ZDEC (Zinc Diethyldithiocarbamate) is similar to ZDBC but slightly more active. It’s used in latex rubber, wire insulation, and medical-grade rubber. ZDEC provides fast vulcanization and good aging resistance.
ZDEC Overview Table
| Feature | Details |
|---|---|
| Chemical Type | Zinc-based dithiocarbamate |
| Curing Speed | Fast |
| Toxicity Level | Low |
| Color Staining | Non-staining |
| Best Applications | Wire insulation, coated fabrics, latex items |
| Temperature Suitability | Low to medium |
| Environmental Impact | Safe and sustainable |
| Compliance | REACH compliant rubber additive |
| Common Use Keywords | rubber accelerator ZDEC, latex rubber curing |
ZDEC is a good choice for manufacturers who need safe rubber chemicals for industrial and medical use. It works well in low-temperature curing systems.
What Is TMTD?
TMTD (Tetramethylthiuram Disulfide) is a powerful thiuram-based accelerator. It offers ultra-fast curing and is often used in sulfur vulcanization systems. However, it can release nitrosamines, which are harmful in certain conditions.
TMTD Overview Table
| Feature | Details |
|---|---|
| Chemical Type | Thiuram-based accelerator |
| Curing Speed | Very fast |
| Toxicity Level | Moderate to high |
| Color Staining | May stain |
| Best Applications | Conveyor belts, industrial rubber, heavy-duty items |
| Temperature Suitability | High |
| Environmental Impact | Less eco-friendly |
| Compliance | May require safety controls |
| Common Use Keywords | rubber accelerator TMTD, sulfur vulcanization agent |
TMTD is effective but needs careful handling. It’s being replaced in some applications by safer, eco-friendly rubber chemicals.
Performance Comparison
| Property | ZDBC | ZDEC | TMTD |
|---|---|---|---|
| Curing Speed | Fast | Fast | Very fast |
| Toxicity | Low | Low | Moderate to high |
| Color Staining | No | No | Possible |
| Best Use | Latex, food-grade rubber | Wire, medical rubber | Industrial rubber |
| Eco-Friendliness | High | High | Low |
| Compliance | REACH compliant | REACH compliant | May require controls |
ZDBC and ZDEC are both zinc-based rubber additives that offer safe vulcanization and low toxicity. TMTD delivers faster curing but comes with higher health risks.
Safety and Sustainability
If safety and sustainability are top priorities, ZDBC and ZDEC are better choices. They are considered non-toxic rubber accelerators and are suitable for eco-friendly rubber compounds. TMTD, while effective, may not meet modern safety standards due to its potential to release harmful byproducts.
Manufacturers focused on green rubber accelerator solutions and REACH compliant rubber additives should consider switching from TMTD to safer alternatives like ZDBC or ZDEC.
Choosing the right rubber accelerator depends on your product type, curing conditions, and safety goals. ZDBC and ZDEC are ideal for safe, sustainable rubber production. TMTD offers speed but requires strict safety measures.
By understanding the strengths and risks of each accelerator, manufacturers can improve product quality, protect workers, and reduce environmental impact.
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| Product | Typical Use Cases |
|---|---|
| Accelerator MBT | General rubber goods, footwear soles, hoses |
| Accelerator MBTS | Tires, conveyor belts, thick molded products |
| Accelerator CBS | Fast curing for automotive rubber, mechanical goods |
| Accelerator TMTD | As ultra accelerator or sulfur donor in rubber blends |
| Accelerator ZDEC | Ultra-fast latex applications like gloves & balloons |
| Antioxidant IPPD | Protects rubber from oxygen & flex cracking |
| Antioxidant 6PPD | Outstanding ozone & weather resistance for outdoor rubber |
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