Plastics Flashcards
1
Q
Were are plastics derived from?
A
Minerals, plants, natural gas, oil and coal
2
Q
What are the properties of a thermoplastic?
A
- Can be heated, allowing you to remould and reshape thermoplastics into new products
- The molecules in a thermoplastic are weakly bonded together
- Thermoplastics can be recycled
3
Q
What are the advantages of thermoplastics?
A
- Can be remoulded/reshaped
- Aesthetically superior finish
- Recyclable
4
Q
What are the disadvantages of thermoplastics?
A
- More expensive
- Can melt if accidentally heated
5
Q
What are the properties of thermosetting plastics?
A
- Can’t be reshaped once set
- The molecules in the plastic are strongly bonded together
- Can’t be recycled
6
Q
What are the advantages of thermosetting plastics?
A
- Cost effective
- Excellent physical appearance
- More resistant to high temperatures
7
Q
What are the disadvantages of thermosetting plastics?
A
- Can’t be recycled
- Can’t be reshaped/remoulded
- Hard to surface finish