Materials Flashcards
Strength
Ability for a product to withstand force without breaking or deforming
Toughness
Ability to withstand sudden impacts without fracturing
Hardness
Ability to resist scratching abrasion or wear
Stiffness
Ability for a product to resist deformation with applied force
Thermoplastic
Can be heated and cooled repeatedly without compromising the properties of the material. Any waste can be recycled
Thermoset
Like an egg it can be heated or reshaped, however is stronger and more heat resistant
Additives
Mixed with plastic to make it last longer be cleaner, safer more colourful e.g.
Epoxy Resin (ER)
Thermoset. Low Shrinkage, Strong and excellent adhesive qualities. Normally used for bonding application and surface coatings.
Melamine Formeldahyde (MF)
Thermoset. Tasteless, waterproof, ouderless, scratch resistant and an electrical insulator. Normally used on worktops, buttons and clothing.
Polyester Resin (PR)
Thermoset. Can be flexible formed without pressure or heat, hard and an electrical insulator. Normally used on car body parts.
Urea Formeldahyde (UF)
Thermoset. Electrical Insulator, good adhesive properties, hard and stiff. Normally used in electrical fittings
Acrylonitrile Butadiene Styrene (ABS)
Thermoplastic. Chemical Resistant, strong and high surface finish
Cellulose Acetate
Thermoplastic. Flexible, hard, light and transparent
Polyamide (PA) Nylon
Thermoplatic. Durable, easily machined and self lubricating and tough
Polyethylene (HDPE)
Thermoplastic. Chemical Resistant and tough
Polyethylene (LDPE)
Thermoplastic. Stiff, hard and easily machined
Polypropylene (PP)
Chemical Resistant and Light
Polystyrene (PS)
Light stiff water resistant
Polyvinyl Chloride (Plasticised)
Soft, flexible and electrical insulator