Dicumyl Peroxide (DCP) Cross-linking Agent
CAS Number: 80-43-3
Dicumyl peroxide (DCP) is a di-functional organic peroxide widely used as a cross-linking agent for polyethylene (XLPE), silicone rubber, EPDM, EVA, and natural rubber. Upon thermal decomposition at 120–180°C, it generates free radicals that create covalent C-C cross-links between polymer chains, significantly improving heat resistance, mechanical strength, and chemical resistance.
Technical Specifications
| purity | ≥99% |
| appearance | White crystalline powder or granules |
| melting point | 39–41°C |
| active oxygen content | 5.8–6.0% |
| half life temperature | 127°C (1 h) |
Applications
- Cross-linked polyethylene (XLPE) wire and cable insulation
- Silicone rubber vulcanization
- EPDM automotive seals and gaskets
- Peroxide-cured EVA foam
- Heat-shrinkable tubing and sleeves
Key Features
- Produces sulfur-free, odorless cross-links for clean, stable end products
- High cross-link density improves heat resistance and creep resistance
- Compatible with a wide range of elastomers and polyolefins
- Masterbatch and pre-blended formulations available for safe handling
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CAS Number
80-43-3
Category
Plastic / Rubber AdditivesAvailability
In StockSample
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