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Flashcards in Materials Deck (328)
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1

What are plastics?

A group of materials made up of long chain molecules.

2

Give five reasons why plastics are popular in manufacturing.

-Lightweight
-Energy Insulator
-Good strength to weight ratio
-Corrosion resistant
-No need for finishing

3

Give two natural materials that are used to produce semi-synthetic polymers?

-Cellulose
-Casein

4

Name the three sources of synthetic plastics.

-Coal
-Oil
-Gas

5

Which process is used to produce synthetic plastics?

Thermal cracking

6

Give the three types of plastic.

-Thermoplastic
-Thermoset
-Elastomer

7

Define a thermoplastic

A plastic that can be repeatedly reheated and remoulded.

8

Define a thermoset plastic.

A plastic that undergo a chemical change making them permanently rigid.

9

Define an elastomer

A plastic that can be distorted and return to its original shape.

10

Name seven thermoplastics

-ABS
-Nylon
-PP
-HIPS
-HDPE
-PVC
-PET

11

What does ABS stand for?

Acrylonitrile Butadiene Styrene

12

Give three properties of ABS.

-High impact strength
-Scratch resistant
-Durable

13

Give three common uses of ABS.

-Kitchen products
-Phone cases
-Interior car parts

14

Give two properties of Nylon.

-Resistant to wear
-Low coefficient of friction

15

Give three common uses of Nylon.

-Bearings
-Gears
-Clothing

16

What does PP stand for?

Polypropylene

17

Give three properties of PP.

-Food safe
-Durable
-Easily machined

18

Give three common uses of PP.

-Food containers
-Medical equipment
-Rope

19

What does HIPS stand for?

High Impact Polystyrene

20

Give two properties of HIPS.

-Impact resistant
-Lightweight

21

Give two common uses of HIPS.

-Toys
-Fridge linings

22

What does HDPE stand for?

High Density Polyethylene

23

Give two properties of HDPE.

-High density
-High chemical resistance

24

What does PVC stand for?

Polyvinyl Chloride

25

Give two properties of PVC.

-High chemical resistance
-Resistant to weathering

26

Give two common uses of PVC.

-Cable insulation
-Window frames

27

What does PET stand for?

Polyethylene Terephthalate

28

Name three thermoset plastics.

-Epoxy resin
-Polyester resin
-Urea formaldehyde

29

Give two properties of epoxy.

-High strength when reinforced.
-Wear and chemical resistant

30

Give two common uses of epoxy.

-Electronic component coverings.
-Adhesives