AMVS-1120
Antmee® Methyl Vinyl Silicone Gum
1. Product Description
Antmee® Methyl Vinyl Silicone Gum is a high molecular weight vinyl-functionalized polysiloxane designed for use in high-performance silicone rubber applications. The incorporation of vinyl groups enables efficient crosslinking in addition-cure systems, providing excellent mechanical strength, elasticity, and thermal stability.
2. Chemical Identification
| Item | Description |
|---|---|
| Chemical Name | Methyl Vinyl Polysiloxane |
| CAS No. | 68083-19-2 |
| Molecular Structure | Vinyl-functional linear PDMS |
| INCI Name | Dimethicone/Vinyl Dimethicone Crosspolymer* |
*Applicable for cosmetic-related applications.
3. Typical Properties
| Property | Unit | Typical Value |
| Appearance | — | Colorless to translucent gum |
| Viscosity (25°C) | Pa·s | 5,000,000 – 20,000,000 |
| Vinyl Content | mol% | 0.03 – 0.20 |
| Volatile Content | % | ≤ 1.5 |
| Density (25°C) | g/cm³ | 0.97 – 0.98 |
| Refractive Index | — | 1.403 – 1.405 |
Note: These values are typical and not intended for specification purposes.
4. Key Features
- Excellent thermal stability (up to 350°F / 177°C and above)
- Outstanding elasticity and flexibility
- Fast and efficient addition curing capability
- Superior weather resistance (UV, ozone, aging)
- Good compatibility with fillers and additives
- Excellent electrical insulation properties
5. Applications
- High Temperature Vulcanized (HTV) silicone rubber
- Liquid Silicone Rubber (LSR) systems
- Silicone elastomers and sealants
- Pressure-sensitive adhesives (PSA)
- Electronic encapsulation materials
- Automotive and industrial rubber components
6. Processing
Antmee® Methyl Vinyl Silicone Gum is typically compounded with reinforcing fillers such as fumed silica and used in platinum-catalyzed addition curing systems.
Processing methods include:
- Two-roll milling
- Internal mixing
- Extrusion and molding
- Injection molding (LSR systems)
7. Packaging
- 25 kg carton with inner polyethylene bag
- Custom packaging available upon request
8. Storage & Shelf Life
- Store in a cool, dry, and well-ventilated place
- Avoid exposure to direct sunlight and moisture
- Shelf life: 12 months from date of manufacture
9. Safety & Handling
- Avoid contact with strong oxidizing agents
- Use appropriate personal protective equipment (PPE)
- Refer to Safety Data Sheet (SDS) for detailed safety information
10. Disclaimer
The information provided herein is based on current knowledge and experience. It is offered in good faith without warranty. Customers are responsible for verifying suitability for their specific applications.