Materials

Question 1

THERMOSETTING PLASTICS

Name 2 properties of Melamine Formaldehyde and 2 of its uses.

Answer 1

Any of the following;

Heat, stain, scratch resistant
Strong
Odourless

Work tops- decorative laminate
Buttons
Tableware

Question 2

THERMOSETTING PLASTICS

Name 2 properties of Urea Formaldehyde and 2 of its uses.

Answer 2

Any of the following;

Question 3

THERMOSETTING PLASTICS

Name 2 properties of Epoxy Resin and 2 of its uses.

Answer 3

Any of the following;

Resin + Hardener mixed together to produce a cast
Bonds unlike materials
Heat, chemical resistant

Printed circuit boards
Surface coating
Castings

Question 4

THERMOSETTING PLASTICS

Name 2 properties of Polyester Resin and 2 of its uses.

Answer 4

Any of the following;

Resin + Hardener (glass / carbon fibre)
Chemical resistant
Stiff, hard

Car/boat bodies

Question 5

What is a thermosetting plastic?

Answer 5

Heated and moulted into shape. Polymer chains are interlinked meaning if they are reheated they do not soften.

Question 6

THERMOSETTING PLASTICS

Name 2 properties of Phenol Formaldehyde and 2 of its uses.

Answer 6

Any of the following;

Hard, brittle
Dark colour, glossy
Heat resistant

Electrical fittings
Bottle tops
Kettle/iron/saucepan handles

Question 7

What is a thermoplastic?

Answer 7

They soften when heated and can be shaped when hot. Will harden when cool, but can be reshaped if reheated.

Question 8

THERMOSETTING PLASTICS

Name 2 properties of Epoxy Resin and 2 of its uses.

Answer 8

Any of the following;

Resin + Hardener mixed together to produce a cast
Bonds unlike materials
Heat, chemical resistant

Printed circuit boards
Surface coating
Castings

Question 9

THERMOSETTING PLASTICS

Name 2 properties of Polyester Resin and 2 of its uses.

Answer 9

Any of the following;

Resin + Hardener (glass / carbon fibre)
Chemical resistant
Stiff, hard

Car/boat bodies

Question 10

What is a thermosetting plastic?

Answer 10

Heated and moulted into shape. Polymer chains are interlinked meaning if they are reheated they do not soften.

Question 11

THERMOSETTING PLASTICS

Name 2 properties of Phenol Formaldehyde and 2 of its uses.

Answer 11

Any of the following;

Hard, brittle
Dark colour, glossy
Heat resistant

Electrical fittings
Bottle tops
Kettle/iron/saucepan handles

Question 12

What is a thermoplastic?

Answer 12

They soften when heated and can be shaped when hot. Will harden when cool, but can be reshaped if reheated.