SMART AND MODERN MATERIALS AND ADHESIVE

SMART AND MODERN MATERIALS AND ADHESIVE

1. NEW AND SMART MATERIALS

   • Smart materials respond to their environment and allow us to personalise products.
   • They improve its performance without increasing its complexity
   • Examples: Smart grease gives the closing mechanism of a CD player a beautifully smooth action.
   • Many new materials allow existing products to be miniaturised or give us the ability to dramatically improve their performance.
   • Optical fibres can transport light over 200km and are used in telecommunications , computers and in surgery.

2. ADHESIVE

   • SCHOOL ADHESIVES
     • PVA (Polyvinyl acetate)
       • What is it? White, water-based adhesive.
       • How does it work? Soaks into surface, creating a strong bond.
       • No care needed.
     • Synthetic Resin
       • What is it? Waterproof adhesive
       • How does it work? Chemical hardening occurs when mixed with water.
       • Will set in water. Don't wash down the sink as it will block the pipes!
   • Epoxy Resin
     • What is it? Versatile resin adhesive
     • How does it work? When mixed with hardener, becomes very hard substance
     • No care needed
   • Contact Adhesive
     • What is it? Solvent adhesive
     • How does it work? Both surfaces are coated with this, and allowed to become touch-dry before being placed together
     • Solvent fumes are dangerous! Esure good ventilation
   • Solvent Cement
     • What is it? Clear solvent
     • How does it work? Dissolves sticky platics so they become sticky
     • Solvent fumes are dangerous! Ensure good ventilation
   • Latex Adhesive
     • What is it? Rubber-based adhesive solution
     • How does it work? Sticks together fabrics and other substances
     • Smells unpleasant but fumes are not dangerous. Some people are allergic to latex.
   • Hot Melt Glue
     • What is it? Usually polythene glue
     • How does it work? Heated and placed in an injector 'gun' for easy applying
     • The glue