Plastics (Junior Cert Engineering): Flashcards
📚Flashcards
Practise the cards
14 cards from this deck
ShowHide
Practise the cards
14 cards from this deck
First true synthetic plastic (1909)
First true synthetic plastic (1909)
Bakelite
Primary raw material for plastics
Primary raw material for plastics
Crude oil
Chain-forming process in plastics
Chain-forming process in plastics
Polymerisation
Another name for plastics
Another name for plastics
Polymers
Two main categories of plastics
Two main categories of plastics
Thermoplastics and thermosetting plastics
Key property of thermoplastics
Key property of thermoplastics
Can be repeatedly heated & reshaped
Plastic memory definition
Plastic memory definition
Thermoplastics return to original flat form when reheated
Thermosetting plastics after curing
Thermosetting plastics after curing
Cannot be softened or reshaped by reheating
Thermosetting plastic structure
Thermosetting plastic structure
Cross-linked 3D molecular network
Curing process applies to
Curing process applies to
Thermosetting plastics
Three Rs for plastic waste
Three Rs for plastic waste
Reduce, Reuse, Recycle
How long plastics persist
How long plastics persist
Hundreds of years