Vinyl Silicone Oil

Name: Vinyl Silicone Oil (Vi-PDMS)
Brand: Moon Technology
Availability: InStock

Vinyl-terminated Polydimethylsiloxane (Vi-PDMS)

CAS: 68083-18-1

Vinyl Silicone Oil (Vi-PDMS) is a vinyl-terminated polydimethylsiloxane with both ends capped by vinyl groups. Available in viscosities ranging from 100 to 100,000 mm²/s, it serves as the essential base polymer and crosslinker for addition cure (platinum-catalyzed) silicone rubber systems. It is also widely used in silicone sealants, waterproofing coatings, and polymer modification applications where thermal stability and flexibility are required.

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Technical Specifications

Chemical Name	Vinyl-terminated Polydimethylsiloxane
CAS Number	68083-18-1
Molecular Formula	C₈H₁₈O₂Si (monomer base)
Appearance	Colorless transparent liquid
Vinyl Content	0.03% – 2.0% (customizable)
Viscosity Range	100 – 100,000 mm²/s (V-100 to V-100,000)
Density (25°C)	0.970-0.980 g/cm³
Refractive Index (25°C)	1.403-1.408
Flash Point	>300°C
Packing	200kg drums, IBC 1000kg, or as requested

Applications

🧴 Addition Cure Silicone Rubber

Base polymer for platinum-catalyzed addition cure silicone rubber (HTV & RTV-2). Provides excellent mechanical properties and transparency.

🔩 Silicone Sealants

Key raw material for structural adhesives and waterproofing sealants used in construction, automotive, and electronics assembly.

🏗️ Waterproofing Coatings

Elastic waterproof membranes for roof, bathroom, and infrastructure waterproofing with excellent UV and weather resistance.

🧪 Polymer Modification

Modifier for plastics, coatings, and adhesives to improve flexibility, thermal stability, and release properties.

⚡ LED Encapsulation

Optically clear encapsulation resins for LED modules, displays, and photovoltaic junction boxes.

🏭 Mold Making

Precision mold manufacturing for prototyping, candle making, jewelry, and art casting applications.