PD Plastics

Question 1

Moulding methods for thermo-setting.

Answer 1

1. Extrusion.
2. Spin casting.
3. Injection moulding.
4. Compression moulding.

Question 1

What are the scales of production?

Answer 1

1. Batch
2. Bespoke
3. Mass
4. Continuous

Question 1

Compression moulding machine.

Answer 1

Question 3

Draw the molecular structure of a Thermo-plastic.

Answer 3

Question 4

Properties of a thermo-setting plastic.

Answer 4

1. Has no memory.
2. Strong.
3. Cannot be recycled.
4. Brittle.
5. Withstand high temperatures.
6. Self coloured.
7. Self finishing.

Question 6

Name all methods of moulding plastics.

Answer 6

1. Injection moulding.
2. Calendaring.
3. Vacuum forming.
4. Extrusion.
5. Compression.
6. Blow moulding.
7. Rotation moulding.
8. Spin moulding.

Question 7

Thermo-setting molecular structure

Answer 7

Question 8

Name both elastomers.

Answer 8

1. Thermo-plastic elastomer (TPE).
2. Liquid silicon rubber (LSR).

Question 9

Injection Moulding Machine.

Answer 9

Question 10

Name all Thermo-Plastics.

Answer 10

Acrylic, ABS, PP (Polypropylene), Nylon, PE (Polyethylene) / HDPE (High-density polyethylene), PS (Polystyrene), PVC (Polyvinyl chloride)

Question 11

Calandering machine.

Answer 11

Question 12

Thermo-setting plastics.

Answer 12

1. Epoxy resin.
2. Urea-formaldehyde.
3. Melamime resin / formaldehyde.
4. Polyester resin.
5. Phenol formaldehyde.

Question 13

Name one additive.

Answer 13

Bio-batch

Question 14

Name each plastic used in these items:

1. Pen and pen lid.
2. Plastic bottle.
3. Plug socket.
4. Rubbers.
5. Pencil cases.
6. Headlights (Of a car).

Answer 14

1. Acrylic and Polypropylene (PP).
2. PET.
3. Urea-formaldehyde .
4. Thermo-plastic elastomer.
5. PVC.
6. Acrylic.

Question 15

What is GPR?

Answer 15

GPR is not a thermo-setting plastic, it is a thermo-setting compisite using Polyester resin and glass matting.

Question 16

Name all bio-degradable polymers.

Answer 16

1. Bio-batch additive.
2. Bioplo polylactide (PLA).
3. Lactel.