Polymers Flashcards
What are thermoforming polymers
Polymers that can be heated and reheated over and over again without any deterioration
Properties of Polypropylene (PP)
Flexible, tough, lightweight, food safe.
Uses of Polypropylene (PP)
Kitchen, medical products, rope
Properties of High density polyethylene (HDPE)
Lightweight, rip and chemical resistant
Uses of high density polyethylene (HDPE)
Milk bottles, pipes, creates, wheelie bins.
Properties of high impact polystyrene (HIPS)
Flexible, impact resistant, lightweight, can be food safe, used for vacuum forming
Uses of high impact polystyrene (HIPS)
Yoghurt pots, vacuum formed products
Properties of polyethylene terephthalate (PET)
Blow moulded, chemically resistant and fully recyclable
Uses of polyethylene terephthalate (PET)
Drink bottles, food containers, yarn.
Properties of acrylic (PMMA)
Tough but brittle when thin. Easily scratched, formed and bonded.
Uses of acrylic (PMMA)
Car lights, alternative to glass, modern baths, clothing.
Properties of polyvinyl chloride (PVC)
Flexible, easily extruded, tough and resistant to chemicals
Uses of polyvinyl chloride (PVC)
Raincoats, pipes, electrical tape.
Examples of thermoforming polymers
Polypropylene, acrylic, polyvinyl chloride
What is a thermosetting polymer
Plastics that have rigid cross-linked polymer chains that are set when heated and cannot be reformed
Properties of polyester resin (PR)
good electrical insulator, hard, but becomes tough when mixed with glass strands to form glass reinforced plastic
Uses of polyester resin (PR)
Encapsulation, boat hulls as GRP
Properties of urea formaldehyde (UF)
High tensile strength, heat resistant, good electrical insulator, hard, brittle, easily injection moulded.
Uses of urea formaldehyde (UF)
Adhesives for bonding particle boards, decorative laminates, electrical casings.
Properties of Epoxy resin (ER)
Good strength to weight ratio, good electrical insulator, heat resistant
Uses of epoxy resin (ER)
Bonding waterproof coatings, electronic circuit boards.
Properties of phenol formaldehyde (PF)
Heat resistant and a good electrical insulator.
Uses of phenol formaldehyde (PF)
Heat resistant handles, electrical components, snooker balls
Properties of melamine formaldehyde (MF)
Lightweight, hard but brittle.
Uses of melamine formaldehyde (MF)
Worktops, surfaces, some kitchenware
Examples of thermosetting polymers
Urea formaldehyde, polyester resin, epoxy resin
