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Silicone foam: The versatile material with exceptional properties

Andresen

Silicone foam is a fascinating material that is being used in more and more areas of application. Whether as a seal, insulation or padding - silicone foam impresses with its unique combination of flexibility, resistance and durability. But what exactly makes silicone foam so special? And where is it used?

In this comprehensive guide, you will learn everything you need to know about silicone foam. Immerse yourself in the world of this extraordinary material and discover the diverse possibilities it offers!



Silicone Foam Rectangular
Silikonschaumprofil in verschiedenen Abmessungen

What is silicone foam?


Silicone foam is a foamed elastomer based on silicone. It is created by adding blowing agents to the silicone rubber, which creates a large number of small, closed cells in the material. This cell structure gives the silicone foam its characteristic properties:


  • Lightness: Due to the high proportion of air, silicone foam is significantly lighter than solid silicone rubber.

  • Flexibility: Silicone foam is very flexible and adapts perfectly to even uneven surfaces.

  • Elasticity: Silicone foam has a high resilience and returns to its original shape after deformation.

  • Thermal insulation: The closed cell structure of the silicone foam ensures good thermal insulation.

  • Sound insulation: Silicone foam absorbs sound waves and reduces the sound level.


Silicone foam is available in different densities, degrees of hardness and colors. Depending on the application, special properties such as flame retardancy, food compatibility or medical approval may be required.


Thermal Properties of Silicone Foam


Silicone foam is characterized by excellent thermal properties. It is temperature-resistant, heat-insulating and flame-retardant.


Important thermal properties:


  • Temperature resistance: Silicone foam can generally be used in a temperature range of -60 °C to +200 °C. Special types can even withstand temperatures of up to +300 °C.

  • Thermal conductivity: The closed cell structure of the silicone foam ensures low thermal conductivity and good thermal insulation.

  • Fire behavior: Silicone foam is flame-retardant and self-extinguishing. It meets the requirements of fire protection class V-0 according to UL 94.


Mechanical Properties of Silicone Foam


Silicone foam has good mechanical properties. It is flexible, elastic, pressure-resistant and tear-resistant.


Important mechanical properties:


  • Compressive strength: Silicone foam can withstand high compressive loads.

  • Tensile strength: Silicone foam has good tensile strength and can also withstand tensile forces.

  • Elongation at break: Silicone foam is stretchable and tear-resistant.

  • Elasticity: Silicone foam has a high resilience and returns to its original shape after deformation.


Acoustic Properties of Silicone Foam


Silicone foam is an effective sound insulator. The closed cell structure of the material absorbs sound waves and effectively reduces the sound level.


Important acoustic properties:


  • Sound absorption: Silicone foam absorbs sound waves and reduces the sound level.

  • Vibration dampening: Silicone foam dampens vibrations and reduces the transmission of vibrations.


Frequently used industries


Silicone foam is a versatile material that is used in a wide variety of industries.


Examples of industries where silicone foam is used:


  • Construction: sealing of windows and doors, sound insulation, thermal insulation

  • Automotive: Seals for engines, transmissions, door seals, sound insulation in vehicle interiors

  • Electrical engineering: insulation of electronic components, protection against electromagnetic radiation

  • Mechanical engineering: seals, padding, vibration damping

  • Aerospace: Seals, insulation, fire protection

  • Medical technology: wound dressings, bandages, prostheses

  • Household: Baking pans, trivets, seals for household appliances



Are you looking for high-quality silicone foam for your company?



Rexio offers you a wide range of silicone foams in different densities, degrees of hardness and colors. Let our experts advise you and find the optimal solution for your requirements!

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