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Silicon Compounds for
MV & HV Insulators

Silicon rubber (VMQ and FVMQ) is a highly versatile elastomer that can be used in the most diverse sectors. The industrial grades of silicone rubber are generally based on polydimethylsiloxanes partially substituted with other mainly alkyl, vinyl and phenyl organic groups. The former regulates the processability, the latter the crosslinking and the last properties at low temperatures. In the case of flour silicone rubber, one of the two methyl groups is replaced by a trifluoro propyl group. The introduction of these fluorinated substituents improves resistance to fuels, solvents and apolar oils, and low temperature properties. The incorporation of reinforcing fillers, typically amorphous or precipitated ventilated silica.

SILICON RUBBER COMPOUND FOR
MV & HV INSULATOR

Thanks to a unique combination of chemical and physical properties, the silicon rubber compounds express peculiar characteristics such as:

    • Flexibility, resilience and constant sealing properties over a wide temperature range
    • Excellent resistance to climatic agents such as rain, snow, humidity, sunlight and ultraviolet
    • Excellent and long-lasting dielectric properties
    • Natural fire resistance and non-toxicity of combustion products
    • Wide range of hardness available (from 10 to 90 ShA)
    • Easy colourability (from transparent to opaque, from fluorescent to textured or glittered)
    • Chemical inertia and biochemistry

SILICON RUBBER COMPOUND
FOR CABLES