Single-Pack Platinum Crosslinking Powder for HCR Silicone Extrusion

Introduce

WSD-PTC-310 is an addition-type platinum crosslinking powder tailor-made for high consistency silicone extrusion operations. Unlike conventional two-pack platinum vulcanizer systems that demand separate weighing and staged feeding, this single-pack formulation removes complicated batching steps entirely. Simply incorporate 0.8–1.0% of this powder into your HCR silicone gum during compounding. Once fed to the extruder, it initiates controlled addition crosslinking inside the heating tunnel oven. It delivers clean, scent-free extruded silicone profiles with great transparency and resistance to thermal yellowing. It is a stable curing solution for long-run extrusion of tubing, gaskets and food-contact silicone goods.

Core Advantages

✅ Single-pack ready formulation, no separate A & B componentsNo dual-component matching. Your mixing team only handles one material, cutting training time and eliminating ratio mistakes. 

✅ Consistent cure performance for long tunnel extrusion runsCuring rate stays steady over hours of non-stop extrusion, minimizing surface defects, blisters and blooming on extruded profiles. 

✅ Economical low addition level: 0.8–1.0%Fine powder distributes evenly inside silicone matrix, without downgrading tensile, tear strength or compression set of finished silicone. 

✅ Clean addition cure, zero peroxide odour, strong yellowing resistanceNo residual peroxide odour after post-bake. Transparent silicone extrudates maintain clear appearance over ageing. 

✅ Regulatory friendly for food-safe silicone articlesBase formula meets RoHS; custom grades can be adjusted to satisfy FDA and LFGB requirements for drinking & food contact silicone. 

✅ Stable shelf stability for 12 months under sealed cool storageBuilt-in inhibitor prevents premature crosslinking during normal mixing and storage.

Comparison Table

Application Scope

• Continuous extruded silicone tubing, flexible hoses and solid cords
• Silicone gaskets, sealing profiles for construction and appliances
• Clear, high-transparency extruded silicone parts
• Food-contact, kitchen and infant silicone extrusion products
• Sanitary silicone profiles requiring odour-free cure

Product Specification Table

Processing Guidance

1. Charge WSD-PTC-310 powder at 0.8–1.0% loading while kneading HCR silicone rubber.
2. Continue mixing until full and uniform dispersion of powder in silicone compound.
3. Feed compound into extruder, cure continuously via heated tunnel oven.
4. Keep away from sulfur, amine and tin-containing contaminants which poison platinum catalyst.
5. Keep pouch tightly sealed, store in cool dry area, avoid direct sunlight.

Why Partner With Winstar Silicone

We are a dedicated silicone functional additive manufacturer based in Dongguan, China. Our portfolio covers platinum vulcanizers, vinyl silicone fluids, anti-static masterbatches and conductive silver paste for silicone molding & extrusion.

• Tune cure speed according to your line speed and oven profile
• Free test samples available for extrusion trail runs
• Consistent batch-to-batch quality & dependable lead time
• On-hand technical support for extrusion defect troubleshooting
• Serve silicone converters across Southeast Asia, Turkey and global markets

FAQ

Q1: Is this crosslinking powder built for extrusion or compression molding? A: WSD-PTC-310 is optimized specially for HCR silicone continuous tunnel extrusion line. Calendering trials can be arranged upon request.

Q2: What is the biggest production benefit vs two-part platinum vulcanizer? A: It removes A/B batching work. Less human error, fewer defective runs, and stable curing for non-stop extrusion.

Q3: Can cured silicone pass food contact compliance tests? A: Base formulation complies with RoHS. We can adjust formula and supply supporting documentation for FDA / LFGB compliance.

Q4: Can I get trial samples? A: Yes, trial samples are available for you to verify extrusion performance. Reach out to us for sample arrangement.