Common Types of Peroxide Vulcanizing Agents
1. Dialkyl Peroxides
Di-tert-butyl peroxide (DTBP)
Dicumyl peroxide (DCP)
2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane (DBPH, Double 25)
tert-Butyl cumyl peroxide
Di(2-tert-butylperoxyisopropyl)benzene (BIPB)
2. Peroxyketals
1,1-Di(tert-butylperoxy)-3,3,5-trimethylcyclohexane
3. Diacyl Peroxides
Dibenzoyl peroxide (BPO)
Dilauroyl peroxide (LPO)
4. Peroxydicarbonates
5. Peroxy Esters
tert-Butyl peroxybenzoate (TBPB)
tert-Butyl peroxyoctoate (TBPO)
Comparison table
| Item | Full Name | Abbrev. | Curing Temp | Features & Applications |
|---|---|---|---|---|
| 1 | Benzoyl Peroxide | BPO | 110–120 °C | Low-temperature curing; strong odor; with benzene residue; for general silicone products |
| 2 | 2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane | DBPH | 180–190 °C | Odorless, non-benzene, good yellowing resistance; ideal for food-grade & transparent parts |
| 3 | tert-Butyl Peroxybenzoate | TBPB | 160–175 °C | Medium-temperature curing, high crosslinking efficiency; suitable for extrusion & molding |
| 4 | 1,1-Di(tert-butylperoxy)cyclohexane | — | 130–150 °C | Medium-low temp, high efficiency, low shrinkage; for thick silicone products |
| 5 | Di-tert-butyl Peroxide | DTBP | ≥190 °C | High heat resistance, low volatility; for high-temp extrusion, wire & cable |
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