Silicone Rubber Sponge Cord White
The silicone sponge that AlphaSil offered are made of a fine cellular construction composed mainly of non-interconnecting cells. Demand for Silicone sponge continues to grow and is available in two standard colors – white and red oxide,
Application
Flexible, compressible silicone closed cell sponge is designed for high performance gasketing, thermal shielding, vibration mounts and press pads.
Thermal Properties
The thermal stability of silicone rubber is probably its most important asset. Components made from these rubbers are affected only to a small extent by extremes of temperature, ranging from –60°C to +250ºC. It can even operate for 10 hours continuously at temperatures as high as +300ºC.
Silicone rubber is an excellent electrical insulating material, its resistance to arcing, corona, ultra-violet light and ozone is good.
Chemical Composition
This range of polydimethylsiloxne have been “ free – blown ” with a chemical blowing agent and crosslinked with an organic peroxide. The cellular structure is produced without the use of CFC, thus making less damaging to the environment.
Flammability Characteristics
SIL 16 has a limiting Oxygen Index (LO1) of 23.2 % and comply with the following specifications :-
* FAR 25.853 (a) (1) (iv) and (a) (1) (v) horizontal flammability tests.
* CAA specification and issue 2 (2.2) (c) and (d) horizontal flammability tests.
Moisture Absortion
The range has a very low degree of moisture absortion. Mechanical properties shows little change even after long periods of immersion.
Environmental Resistance
Silicone Rubber has excellent resistance to ozone, oxidation, ultra-violet light, corona discharge, cosmic radiation, ionising radiation and weathering in general. Typical radiation resistance is greater than 10 rads. It decomposes at 400°C to 500ºC leaving an inert, non-flammable and electrically non-conductive residue.
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