Plastics

Question 1

What are plastics

Answer 1

They’re man made materials

Question 2

What’s the name of the type of plastic that comes from crude oil, coal and natural gas

Answer 2

Synthetic plastics

Question 3

What’s plastic memory

Answer 3

Each time a plastic is related it will attempt to return to its original shape unless it’s been overheated or damaged.

Question 4

What are the two main types of plastics

Answer 4

Thermoplastics and thermosetting plastics

Question 5

Name three types of thermoplastics

Answer 5

Acrylic, polythene and polyvinyl chloride (PVC)

Question 6

Acrylic is the most common plastic where

Answer 6

In a school workshop

Question 7

What are thermoplastics made up of

Answer 7

Lines of molecules with few cross linkages

Question 8

What are thermoplastics suitable for

Answer 8

Injection moulding, vacuum forming and blow moulding

Question 9

What can acrylic be

Answer 9

Translucent (smoked), transparent (clear) or opaque (solid colour)

Question 10

What is acrylic resistant to

Answer 10

Most acids and weather conditions

Question 11

Acrylic is easily machined, cemented and what

Answer 11

Polished

Question 12

Acrylic has 10x impact resistance than what

Answer 12

Glass

Question 13

Splinters and also what easily

Answer 13

Scratches

Question 14

What can acrylic be used for (name 5)

Answer 14

Light units
Illuminated signs
Watch and clock glasses
Simple lenses
Aircraft canopies and windows
Car rear light units
Skylights
Furniture,
Baths
Perspex sheer

Question 15

What can polythene be moulded into because of its excellent moulding qualities

Answer 15

Almost any form

Question 16

Name the two types of polythene

Answer 16

High density and low density

Question 17

What can polythene be used to make

Answer 17

Bottles
Bowls
Toys
Tubes

Question 18

Describe high density polythene

Answer 18

Rigid and hard

Question 19

Describe low density polythene

Answer 19

Tough and flexible

Question 20

What are generally made from high density polythene

Answer 20

Machine parts

Question 21

What are generally made from low density polythene

Answer 21

Bottles

Question 22

Polyvinyl chloride (PVC) is a tough material that can be as what

Answer 22

A hard material or a flexible form

Question 23

What can PVC be wielded or bonded with

Answer 23

An adhesive

Question 24

What is PVC used to make

Answer 24

Pipes
Raincoats
Long play records
Coating on electrical wires

Question 25

Describe thermosetting plastics

Answer 25

They spare made up of lines of molecules which are heavily cross linked

Question 26

What are thermosetting plastics ideal for

Answer 26

Pan handles
Kettle handles
Plugs

Question 27

Many what are thermosetting plastics

Answer 27

Adhesives (glue)

Question 28

Name 3 thermosetting plastics

Answer 28

Polyurethane
Melamine formaldehyde
Polyester reins

Question 29

What’s polyurethane the basis of

Answer 29

Many paints and varnishes

Question 30

Describe polyurethane

Answer 30

Very tough and has water resistant qualities

Question 31

Describe melamine formaldehyde

Answer 31

Has a smooth surface and hygienic qualities

Question 32

What’s melamine formaldehyde used to make

Answer 32

Plastic laminates
Electrical plugs and sockets

Question 33

Describe polyester reins

Answer 33

A very tough material that can resist impact

Question 34

What is the name of the type of material that’s very tough and can resist impact

Answer 34

Glass reinforced plastic (GRP)

Question 35

What’s polyester reins used for

Answer 35

Car body repairs
Sailing boats
Corrugated sheet

Question 36

Why is polyester reins used in these things

Answer 36

Because of its lightness, toughness and resistance to water