Plastics
There are 2 main types of plastic - Thermosetting Plastic and Thermoplastic
Thermosetting Plastic
These are generally hard and resistant to heat so are used for things that might come in contact with heat such as saucepan handles and electric plugs. These types of plastics can be created by mixing two parts together such as a resin and a hardener.
Thermoplastic
These plastics are generally soft and NOT resistant to heat, therefore cannot be used where they would come in contact with heat. Most things made from thermoplastic are produced using heat and moulds.
Thermosetting plastics
match up the following thermosetting plastics with the pictures:
Epoxy resin
Good electrical insulator, hard, brittle unless reinforced, resists chemicals well. Used for casting, adhesives and bonding of other materials
Melamine formaldehyde
Stiff, hard, strong, resists some chemicals and stains. Used for laminates for work surfaces, electrical insulation, tableware
Polyester resin
Stiff, hard, brittle unless laminated, good electrical insulator, resists chemicals well. Used for casting and bonding of other materials. Often using with glass fibres (fibreglass)
Urea formaldehyde
Stiff, hard, strong, brittle, good electrical insulator Used for electrical fittings, handles and control knobs, adhesives
Thermosetting Plastic
These are generally hard and resistant to heat so are used for things that might come in contact with heat such as saucepan handles and electric plugs. These types of plastics can be created by mixing two parts together such as a resin and a hardener.
Thermoplastic
These plastics are generally soft and NOT resistant to heat, therefore cannot be used where they would come in contact with heat. Most things made from thermoplastic are produced using heat and moulds.
Thermosetting plastics
match up the following thermosetting plastics with the pictures:
Epoxy resin
Good electrical insulator, hard, brittle unless reinforced, resists chemicals well. Used for casting, adhesives and bonding of other materials
Melamine formaldehyde
Stiff, hard, strong, resists some chemicals and stains. Used for laminates for work surfaces, electrical insulation, tableware
Polyester resin
Stiff, hard, brittle unless laminated, good electrical insulator, resists chemicals well. Used for casting and bonding of other materials. Often using with glass fibres (fibreglass)
Urea formaldehyde
Stiff, hard, strong, brittle, good electrical insulator Used for electrical fittings, handles and control knobs, adhesives
Thermoplastic
Match up the following thermoplastics with the pictures