Elastomers

Question 1

elastomers

Answer 1

a natural or synthetic polymer having elastic properties. eg rubber

Question 2

properties of elastomers

Answer 2

• cant melt, before melting they pass into a gaseous state.
• swell in the presence of certain solvents.
• generally insoluble.
• flexible and elastic.
• lower creep resistance than other thermoplastic materials.

Question 3

creep resistance

Answer 3

small difference in thickness, creeps down due to gravity.

Question 4

polyurethanes

Answer 4

• used in textile industry for manufacture of: lycra, foam, scooter wheels, lacquer for wood.
• fits to any shape.
• breathable but not waterproof.
• good flexibility and performance.
• chlorine resistant.

Question 5

natural rubber

Answer 5

material used in the manufacture of gaskets, shoe heels and wellys.

Question 6

Polybutadiene

Answer 6

• Elastomer material used on the wheels of tyres of vehicles, given the extraordinary wear resistance.
• Flexible, resistant, grippy
• uses after life: playground, surfaces, barriers

Question 7

neoprene

Answer 7

• used mostly in the manufacture of wetsuits, also used as wire insulation belts.
• not waterproof, allows water in but seals it so body can warm up water.
• fits to body
• customisable
• salt resistant
• good insulator
• cellular structure

Question 8

sillicone

Answer 8

• used in a wide range of products and areas due to their excellent thermal and chemical resistance.
• used in moulds, babies dummies, medical prophesies.
• flexible
• non stick
• can go in oven
• sealant
• water resistant and food safe