Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DT > Polymers > Flashcards

Polymers Flashcards

1
Q

What are thermoplastics?

A

weak chemical bonds
can be remoulded when heated = can be recycled = good for environment
cheaper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is ABS?

A

lego, kitchen plastic containers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is PA (nylon)?

A

needs strength and flexibility - fishing wire

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is PP (polypropene)?

A

cheap large goods (bins, storage containers) and bottles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is PET?

A

high quality plastic bottles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is LPDE?

A

toothpaste tubes, plastic bags

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is HPDE?

A

plastic containers (eg bleach bottle) - excellent blow moulding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is HIPS?

A

food packaging (excellent vacuum forming )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is PVC?

A

wire casing, tape cloth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are thermosetting plastics?

A

strong chemical bonds
cannot be remoulded (resistance to heat + chemicals) = cannot be recycled = bad for environment
more expensive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is melamine formaldehyde?

A

replace potery/glass/metal
plastics plates/cups
table tops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is urea formaldehyde?

A

plugs
toilet seat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is epoxy resin?

A

adehesive in composites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are biopolymers?

A

non-oil based polymers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is natural biopolymers and examples?

A

made from natural materials (eg. cellulose or starch) to naturally break down
- cornstarch polymers - food packaging, cups, disposable nappies
- potatopak - disposable plates/mugs/cultlery
- biopol (veg + corn) - disposable plastic products

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are synthetic polymers?

A

made from sustainable sources, but engineered to break down

17
Q

What is polyactide?

A

(veg and corn starches) disposable bottles

18
Q

What is PHA?

A

fermentation of fats and sugars

19
Q

What are some disadvantages of biopolymers?

A
  • give off methane when biodegrade
  • can’t be recycled - encourage throw away society
  • need large amount of crop to produce (people starving)
  • more expensive

DT (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions