What are thermoplastics?
plastics that can be reheated and reshaped and dont undergo significant chemical change
What are thermosetting plastics?
plastics that cannot be reheated and remoulded. the bond is very strong
What are 7 different types of thermoplastics?
acrylic LDPE HDPE Polypropylene PVC Nylon Hips
What are different types of thermosetting plastics?
araldite polyurethane melamine formaldehyde Urea Formaldehyde Polyester resins
Are thermosetting plastics difficult to recycle?
What are the properties of acrylic?
easy to cut and shape
used for safety glasses/baths/signs
What are the properties of LDPE?
used for plastic bags and bottles
What are the properties of HDPE?
used for machine parts, buckets and crates
What are the properties of polypropylene?
used for injection moulding
used for food containers/chairs/storage units
What are the properties of PVC?
used for water pipes, raincoats and electrical wire coatings
What are the properties of nylon?
used in engineering
used for gears/wheels/clothing
What are the properties of HIPS?
can be vacuum formed
used for hard hats and trays
What are the properties of araldite?
comes in 2 parts
resin and catalysts
permanently bonds 2 things together
What are the properties of polyurethane?
forms basis of many varnishes
What are the properties of melamine formaldehyde?
used for kitchen worktops
What are the properties of Urea formaldehyde?
What are the properties of polyester resins?
can be combined with fibreglass to produce GRP (glass reinforced plastic that is used for car body repairs and sailing boats