No Post Cure Silicone: The Ultimate Guide to Platinum Cure Silicone for High-Performance Applications
No post cure silicone, also known as platinum cure silicone or addition cure silicone, represents the most advanced silicone technology available today. It eliminates the need for secondary curing while delivering unmatched purity, performance, and compliance.
What Is No Post Cure Silicone?
No post cure silicone is a type of silicone elastomer that completes its curing process in a single stage. Unlike peroxide-cured silicone, it does not require additional heat treatment to remove volatile residues.
This material is based on an addition curing system using a platinum catalyst, ensuring a clean chemical reaction with zero by-products.
Core Features
- Zero post curing required
- Ultra-low volatile content
- High transparency
- Odorless and tasteless
- Superior biocompatibility
How Platinum Cure Silicone Works (Engineering Perspective)
The curing mechanism is based on a hydrosilylation reaction between vinyl-functional and hydride-functional polysiloxanes.
- No condensation reaction
- No release of alcohols or acids
- Complete cross-linking during molding
This results in a highly stable molecular structure, which directly improves mechanical and thermal performance.
No Post Cure Silicone vs Peroxide Cure Silicone
| Parameter | No Post Cure Silicone | Peroxide Silicone |
|---|---|---|
| Curing Type | Platinum Addition | Peroxide |
| Post Cure | Not Required | Required |
| Volatile Content | Extremely Low | High |
| Odor | None | Present |
| Compliance | FDA / LFGB Ready | Limited |
| Production Efficiency | High | Lower |
Why Leading Manufacturers Choose No Post Cure Silicone
1. Faster Production Cycles
Eliminating post curing reduces total production time by up to 30–50%.
2. Regulatory Compliance
Widely used in FDA, LFGB, and medical-grade applications due to its clean chemistry.
3. Superior Material Performance
- Better tear strength
- Higher elasticity
- Improved aging resistance
4. Cost Efficiency at Scale
Although raw material cost is higher, total cost of ownership is lower due to energy and labor savings.
Applications of No Post Cure Silicone
Food & Baby Products
- Baking molds
- Baby nipples and pacifiers
- Food-grade seals
Medical & Healthcare
- Medical tubing
- Respiratory masks
- Implantable components
Industrial & Electronics
- High-performance gaskets
- LED encapsulation
- Electrical insulation parts
Technical Data (Reference)
- Hardness: 10–80 Shore A
- Tensile Strength: 7–11 MPa
- Elongation: 400–800%
- Temperature Resistance: -60°C to 230°C
How to Select the Right Material
- Choose LSR for injection molding precision
- Choose HTV for extrusion and compression molding
- Confirm FDA or medical certification requirements
- Evaluate transparency and color customization needs
FAQ
Is no post cure silicone safe for food contact?
Yes, platinum cure silicone meets FDA and LFGB standards when properly formulated.
Why is platinum silicone more expensive?
The platinum catalyst and higher purity raw materials increase cost, but reduce processing expenses.
Can I skip post curing completely?
Yes, for most applications, no additional curing is required.
Is it suitable for medical applications?
Yes, it is widely used in medical-grade products due to its biocompatibility.
Get Expert Silicone Solutions
If you are sourcing no post cure silicone materials for your project, our engineering team can provide customized formulations for your exact application.
√ Free sample testing
√ Custom hardness & color
√ FDA / LFGB compliant grades
√ Fast global delivery
