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As an electrical insulator, silicone rubber has the added virtue of remaining non-conductive when damaged by heat, reducing the likelihood of runaway arcing. With the addition of carbon or another conductive substance as a powdered filler, silicone rubber can be made electrically conductive while retaining most of its other mechanical properties.
Silicone rubbers constitute about 30% of the silicone family, making them the largest group of that family. Silicone rubbers maintain their mechanical properties over a wide range of temperatures and the presence of methyl-groups in silicone rubbers makes these materials extremely hydrophobic, making them suitable for electrical surface ...
Silicone contamination of electrical switch contacts can lead to failures by causing an increase in contact resistance, often late in the life of the contact, well after any testing is completed. [13] [14] Use of silicone-based spray products in electronic devices during maintenance or repairs can cause later failures.
When such materials are used only on single components instead of entire assemblies, the process is referred to as encapsulation. Thermosetting plastics or silicone rubber gels are often used, though epoxy resins are also very common. When epoxy resins are used, low chloride grades are usually specified. [1]
Coating material (after curing) should have a thickness of 30–130 μm (0.0012–0.0051 in) when using acrylic resin, epoxy resin, or urethane resin. For silicone resin, the coating thickness recommended by the IPC standards is 50–210 μm (0.0020–0.0083 in).
Silastic-brand silicone elastomers have a range of applications. In the automotive industry they are used for making gaskets, spark plug boots, hoses and other components that must operate over a broad temperature range and resist oil and coolants.
Other conductive materials are possible but unusual. The adhesive component can be a varnish, synthetic resin, or silicone. Variations in conductive component's type and concentration change the resistivity of the adhesive. [1]
Silicone oil serves as an effective gun lubricant, suitable for use with the rubber, plastic, and metal components commonly found in firearms. Its high surface adhesion allows it to create a long-lasting protective film, which is beneficial for preserving guns during prolonged storage.