Skip to main content

Silicones and their uses

Short answer

Silicones are organosilicon polymers with a –Si–O– backbone and organic side groups, heat-stable and water-repellent. They are used as lubricants across wide temperature ranges, and for electrical insulation, sealants and coatings.

What are silicones? Give any two uses of silicones.

Silicones are inorganic–organic polymers having a backbone of alternating Si and O atoms (–Si–O–Si–) with organic groups, usually methyl, attached to silicon; general formula [R₂SiO]ₙ. They are heat stable, water repellent and chemically inert.

Two uses:

  1. Silicone oils and greases as lubricants over a wide temperature range.
  2. Silicone rubber and resin for electrical insulation, sealants and medical implants (also water-repellent coatings).

✓ Answer checked by Claude Opus 5.5 (high effort)

Related questions

All Engineering Chemistry chapter 4 questions →