Plastics

• What are thermoplastics?

  Plastics that can be re-heated and reshaped
• How do thermoplastics allow reshaping?

  Their molecular bonds weaken when reheated
• What are thermoplastics made of?

  Long chain monomers
• Can thermoplastics be recycled?

  Yes, they can be recycled
• How do thermoplastics respond to heat?

  They do not resist heat well
• What are thermosetting plastics?

  Plastics that can only be heated and shaped once
• What happens to thermosetting plastics after they are formed?

  The molecules become interlinked and set
• Can thermosetting plastics be reheated or recycled?

  No, they cannot be reheated or recycled
• What is a characteristic of thermosetting plastics?

  They set and cannot be reshaped
• What are examples of Thermosetting plastics?

  • Epoxy Resin
  • Melamine formaldehyde
  • Urea formaldehyde
  • Polyester resin
  • Phenol Formaldehyde
• What are some examples of thermoplastics?

  • Acrylic
  • Polyethylene
  • Polypropylense
  • Polystyrene
  • Polyvinyl Chloride (PVC)
  • Nylon