p1- polymer enhancments

Question 1

lubricants

Answer 1

. wax reduces the viscosity of polymer.
.makes it less sticky
. allows more shapes to be formed
-allows mouldings temp to be low
-saves energy

Question 2

Thermal antioxidants

Answer 2

-prevents polymer oxidising or discolouring

• due to excessive heat during process

Question 3

pigments

Answer 3

-tiny particles mixed into polymer state to give colour

Question 4

Antistatic

Answer 4

-reduce likelihood pf polymer building static charge

Question 5

Flame retardants

Answer 5

-reduce likelihood of combustion or spread of fire
eg-plug sockets

Question 6

Plasticisers

Answer 6

-plastics become less hard and brittle at normal temp

-help in processing because they allow polymers to be formed easily at high temp

Question 7

fillers

Answer 7

• sawdust and wood flour provide bulk in product

-less polymer is required
-mineral fillers such as chalk, clay help increase thermal conductivity of polymer

-heat up and cool down quickly shorter mould cycle times

Question 8

biodegradable plasticisers

Answer 8

-makes it more flexible, softer, easier to break down means faster degradation time

Question 9

Bio-batch additives

Answer 9

-oxy-degradable photodegradable and hydro- degradable

-help reduce degradation time from hundreds of years to a few years or even months

Question 10

Antioxidants

Answer 10

-helps to reduce environmental deterioration from exposure to oxygen in air

-prevent increased brittleness, surface cracks, pigment discolouration

-garden furniture

Question 11

UV light stabilisers

Answer 11

-prevent polymer chain from being broken by sunlight

-UV attacks colour loss, brittleness

-used in outdoor toys, play equipment, garden furniture, stadium seats