Elastomers

Question 1

Elastomers

Answer 1

A natural or synthetic polymer having elastic properties. Eg rubber band

Question 2

Properties of an Elastomer

Answer 2

Can’t melt, before melting they pass into a gaseous state
Swell in the presence of certain solvents
Generally insoluble
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 elastic clothing Eg lycra, foam, scooter wheel and 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 welly’s

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

Material used primarily 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, cellular structure, good insulator.

Question 8

Silicone

Answer 8

Used in a wide range of products and areas due to their excellent thermal and chemical resistance. Used in the manufacture of babies dummies, medical prostheses and moulds.
Flexible, non stick, can go in the oven, sealant (baths) water resistant, food safe