Platinum (Addition) Cure vs. Peroxide Cure
The first question every silicone engineer asks a new supplier. Whether you call it a platinum curing agent or a platinum vulcanizing agent, the addition-cure chemistry is the same — this table is the answer we give.
| Property | Peroxide (DBPH / DCBP) | Platinum Addition Cure |
|---|---|---|
| Odor | Noticeable decomposition by-products | None — no by-products formed |
| Post-cure | Usually requires secondary baking (4+ h at 200 °C) | Not required — saves oven time and energy |
| Food contact | Limited suitability | The standard route to food-contact parts |
| Clarity | Lower | High transparency |
| Yellowing resistance | Moderate | High |
| Cure speed | Slower | Significantly faster, one-step molding possible |
| Material cost | Lower | Higher — platinum is a precious metal |
| Poisoning sensitivity | Not sensitive | Deactivated by sulfur, amines, phosphorus, tin |
Why Buy From Us
Not because we are the biggest — because of how we work after the drums are delivered.
Free technical support, 7 days a week — before and after the sale
Process questions answered by people who understand dosing, addition order and cure windows — free after-sales guidance, 7 days a week, 12 hours a day.
Free samples with dosing recommendations
We ask about your compound, hardness and process before sending anything — the sample arrives with a starting formulation. The sample is free of charge; shipping is on you.
One supplier, full additive package
Cure system, blooming control, release agents and antibacterial additive from a single source — one documentation package, no finger-pointing between suppliers when something goes wrong.
Documentation ready for your audits
English TDS and MSDS, batch-aligned certificates, test reports where they exist — and honest answers where a report is still in progress.
Export-ready logistics
Packaging, labeling and documents handled for international shipment — including small trial lots that most factories refuse to bother with.
Manufacturer-direct, no middlemen
No trading-company wall between you and production — your feedback reaches the people who actually adjust the formulation and make the product.
When Peroxide Is Still the Right Answer
An honest supplier tells you this too.
Stay on peroxide if…
- Your parts are industrial-only, low-value and price-driven
- Your plant shares equipment with sulfur-vulcanizing lines you cannot isolate
- Switching cost (trials, approvals) cannot be recovered on current volumes
Switch to platinum if…
- Your customers demand odor-free or food-contact parts
- Post-cure oven capacity is your production bottleneck
- Yellowing, blooming or bubbles are causing rejections
Still Deciding? Test Both.
We will send a platinum sample matched to your current peroxide recipe — run them side by side and let the parts decide.
Request a Free Sample