Elastomers (Leaving Cert Engineering): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
Definition of elastomers
Definition of elastomers
Flexible polymers that return to original shape after stretch
Key elastic property of elastomers
Key elastic property of elastomers
Stretch significantly then return to original shape
Origin of term 'elastomer'
Origin of term 'elastomer'
Combines 'elastic' and 'polymer'
Molecular structure of elastomers
Molecular structure of elastomers
Amorphous with limited crosslinking
Function of crosslinks in elastomers
Function of crosslinks in elastomers
Act as molecular springs to restore original shape
Most common natural elastomer
Most common natural elastomer
Natural rubber
Examples of synthetic elastomers
Examples of synthetic elastomers
Silicone rubber, neoprene, polyurethane
Benefit of synthetic vs natural elastomers
Benefit of synthetic vs natural elastomers
Better heat, chemical, and weather resistance
Elastomer use in tyres
Elastomer use in tyres
Provide durability and flexibility for road contact
Elastomer use in seals and gaskets
Elastomer use in seals and gaskets
Maintain shape under pressure
Elastomer use in sports equipment
Elastomer use in sports equipment
Provide bounce and flexibility
Structural category of elastomers
Structural category of elastomers
Between thermoplastics and thermosets