Winstar Silicone One Component Platinum Catalyst for Silicone Extrusion
Short Intro
WSD-PTC-310 is a one-component powder platinum catalyst specially developed for high consistency silicone extrusion process. Compared with traditional two-part (A+B) platinum vulcanizing agent, this single-formula design removes the complicated A/B weighing and separate adding steps. Just add 0.8–1.0% into your HTV silicone gum and mix evenly before extrusion. It starts addition curing when heated in tunnel oven, delivering odor-free, low-yellowing, high-transparency silicone extrudates like silicone tubes, cords, sealing strips and profiles. Stable curing performance for continuous extrusion lines, ideal for food contact & sanitary silicone products.
Key Features
✅ One-part ready-to-use formulaNo A/B weighing & mixing. Simplify workshop operation, reduce human error and save labor cost.
✅ Optimized for continuous silicone extrusion tunnel ovenStable curing speed, no blistering, no blooming, smooth surface finish for silicone profiles, hoses, seals.
✅ Low recommended dosage: 0.8 ~ 1.0%Good dispersion in silicone rubber, no negative impact on silicone physical properties.
✅ Odor-free & excellent anti-yellowing performanceNo peroxide residue, no pungent smell after vulcanization. Prevent clear silicone parts from yellowing after post-baking.
✅ Great physical retentionFinished silicone keeps good tear strength, tensile strength, elasticity and low compression set.
✅ RoHS compliant, food-grade availableCompatible with FDA / LFGB formula upon request.
✅ 12 months shelf life under proper sealed storage
✅ Comparison: One-Part (WSD-PTC-310) VS Two-Part Platinum Catalyst
| Comparison Item | WSD-PTC-310 One-Part Platinum Catalyst | Traditional Two-Part (A+B) Platinum Catalyst |
|---|---|---|
| Operation Method | Single powder, add 0.8-1.0% directly into silicone, one-time mixing | Need to weigh A & B separately, feed in two steps with strict ratio control |
| Labor & Error Risk | Simple operation, less training, low risk of wrong proportion | Cumbersome batching, wrong ratio easily causes under-cure or scorch |
| Stock Management | Only 1 SKU to store & manage | Need to manage two separate materials (A agent + B agent) |
| Mixing Process | One-time feeding, short kneading cycle | Two-stage feeding, longer mixing time |
| Continuous Extrusion Suitability | Stable curing speed for long-run continuous extrusion | Curing speed fluctuates easily if A/B ratio drifts |
| Premature Cure / Scorch Risk | Built-in inhibitor, safe under normal mixing temperature | Wrong feeding sequence or ratio may lead to scorch inside kneader |
| Material Waste | Low leftover waste, easy stock rotation | If one component expires, the matching part becomes useless |
| Final Product Quality | Stable odor-free & anti-yellowing performance | Quality heavily depends on manual weighing accuracy |
Directions for Use
- Add WSD-PTC-310 at 0.8–1.0% loading into your HTV silicone rubber during kneading/mixing.
- Mix uniformly until full dispersion.
- Feed the compound into your extruder and cure continuously in hot tunnel oven.
- Avoid contamination with sulfur, nitrogen, tin compounds which will poison platinum catalyst.
- Sealed storage in cool & dry place, away from direct sunlight.
Why Choose Winstar Silicone?
We are a professional silicone additives manufacturer located in Dongguan, China. We focus on platinum catalysts, vinyl silicone oil, anti-static masterbatch, conductive silver paste and silicone curing agents for extrusion & molding silicone.
- Custom cure speed adjustment available
- Free sample support for your extrusion trial
- Stable batch quality & fast lead time
- Professional technical support for silicone extrusion process troubleshooting
- We serve silicone factories from Southeast Asia, Turkey and global markets
FAQ
Q1: Is this one-part platinum catalyst for extrusion or compression molding?
A: WSD-PTC-310 is optimized for continuous silicone extrusion tunnel oven process. It can also be evaluated for calendering process upon testing.
Q2: What is the mixing ratio?
A: Standard dosage is 0.8–1.0% of the silicone base rubber. Adjust according to your oven temperature, line speed and product thickness.
Q3: Compared with two-part platinum, what is your biggest advantage?
A: No A/B separate weighing and feeding. It cuts mixing steps, reduces ratio error, keeps more stable curing for long extrusion production runs.
Q4: Can the finished silicone pass food contact test?
A: Our formula is RoHS compliant. We can provide test reports and adjust formulation to support FDA / LFGB food grade requirements.
Q5: Can I get a sample?
A: Yes, small trial samples are available for your extrusion test. Contact us for sample arrangement.
- Hi, Winstar Silicone company, we are interested in your product silicone color masterbatch, could you please offer some free samples to us？ Our company address: ***LA,USA
- Hello Winstar, our product is compression molding product,could you advise which peroxide curing agent to use ?
- Hi friend, we have some problem in silicone to PVC bonding, that bonding strength is not well at all, how to improve it please ?
