Composites and New Materials

Composites and New Materials

1. These are materials that are made from two for more materials bonded together.

2. This can make materials have more useful properties than either material alone.

3. Glass-Reinforced Plastic (GRP) is a popular choice for large structural items such as some car bodies and boats.

   • It is made from glass fibres bonded with polyester resin.
     • This makes is light and can be moulded, but the glass fibres make it stronger.
   • Glass fibre is available as woven fabric, matting and loose strands.

4. Carbon Fibre Reinforced Plastic

   • Similar to GRP, but instead of glass fibres, carbon fibres are used.
   • Carbon fibre reinforced plastic is even lighter, stronger and tougher than GRP.
   • Products made from carbon-fibre composites include protective helmets, racing cars and bulletproof vests

5. Nanomaterials

   • Nanoparticles of a material often have different properties from 'normal' material - that why they can be very useful.
   • Self-cleaning glass for windows - the glass has a coating of nanoparticles that cause dirt to break down so it can be easily washed off by rainwater.
   • Anti-bacterial coatings, e.g. for toys - surfaces can be coated with a nanomaterial which contains nanoparticles that kill bacteria.