Silicone gels – types and uses

Types of silicone gels

Silicone gels are solventless, “jelly-like” materials available in two basic forms:

1. User-cured silicone dielectric gels:  Very sticky materials that are cured in place to form a cushioning, self-healing, resilient material.

Silicone dielectric gels are usually two-part products. They may be cured at room temperature or utilize a heat-accelerated cure. One-part and UV-curable materials are also available, along with: 

• Low-volatility gels that do not fog optical surfaces
• Gels that maintain their flexibility and resilience at extremely low temperatures
• Optically clear gels for LEDs
• Solvent-resistant gels
• Flame-resistant gels
• Thermally conductive gels

2. Pre-cured gels: One-part materials designed for use “as is” by formulators.

Learn about the structure and properties of silicone gels.

Uses for silicone gels

Silicone dielectric gels are used primarily in electronics manufacturing. They: 

• Give high levels of stress relief to sensitive electronic circuits
• Protect electronic assemblies and components from moisture and adverse environments
• Provide primary or secondary environmental protection/passivation
• Encapsulate electronics ranging from micro devices to large modules, including:
  • • Underhood automotive applications
    • High-voltage electrical components
    • Outdoor lighting modules
    • Electrical coils
    • Light emitting diodes (LEDs)

Silicone formulating gels are used primarily in beauty and personal care formulations:

• As formulation aids to increase viscosity and keep solids in suspension
• To deliver actives, such as oil-soluble vitamins, sunscreens, antiperspirant salts, and fragrances, and extend fragrance duration
• To give the user a unique sensory experience – provide a smooth, velvety, powdery feel
• To improve spreadability by decreasing application effort and the perception of drag

Visit the silicone showcase to see the benefits silicone gels and other materials bring to a wide range of industries.