Topic 4.2D-F

Question 1

Thermoplastics

Answer 1

Linear chain molecules with weak secondary bonds between the chains.

Question 2

Thermosets

Answer 2

Linear chain molecules with strong primary bonds between adjacent polymer chains.

Question 3

Weaving

Answer 3

2 distinct sets of yarns or threads are interlaced at right angles to form a fabric or cloth.

Question 4

Knitting

Answer 4

Yarn is manipulated to create a fabric- Knitting creates multiple loops of yarn (stitches) in a line or tube.

Question 5

Lacemaking

Answer 5

Lace is a delicate fabric made out of yarn or thread in an open weblike pattern

Question 6

Felting

Answer 6

Production of felt through matting, condensing and pressing fibres together.

Question 7

Composite material

Answer 7

Mixture composed or 2 or more materials with one acting as the matrix (glue) and the other as a reinforcement (fibres/sheets/particles)

Question 8

Pultrusion

Answer 8

Continuous process for manufacturing composite materials with constant cross-section.

Question 9

Fibreglass

Answer 9

Fibrous form of glass that is used an insulation or reinforcing agent in plastics