1.3-Polymer enhancement

Question 1

What is the reason for adding lubricants to polymers

Answer 1

-adding wax reduces the viscosity of the molten polymer- allows more intricate shapes to be formed
-allow moulding temperature to be lowered, saving energy

Question 2

What is the reason for adding thermal antitoxidants to polymers

Answer 2

-prevent polymer oxidising or discolouring due to excessive heat during processing

Question 3

What is the reason for adding pigments to polymers

Answer 3

-give colour

Question 4

What is the reason for adding antistatics to polymers

Answer 4

-reduce likelihood of polymer building up a static charge

Question 5

What is the reason for adding flame retardants to polymers

Answer 5

-reduce likelihood of combustion or the spread of fire

Question 6

What is the reason for adding plasticisers to polymers

Answer 6

-allow plastics to become less hard and brittle at normal temperature use
-allow polymers to be formed at high temperatures

Question 7

What is the reason for adding fillers to polymers

Answer 7

-sawdust and wood flour provide bulk to product so less polymer required
-mineral fillers help increase thermal conductivity

Question 8

What is the reason for adding biodegradable plasticisers to polymers

Answer 8

-make polymer more flexible, softer and easier to break down- faster degration time

Question 9

What is the reason for adding bio batch additives to polymers

Answer 9

-oxy-degradable photodegradable and hydro degradable additives help reduce degration time

Question 10

What is the reason for adding antitoxidants to polymers

Answer 10

-help reduce environmental deterioration of polymer from exposure to oxygen
-help prevent brittleness, surface cracks and pigment discolouration
-polymer garden furniture

Question 11

What is the reason for adding UV light stabilisers to polymers

Answer 11

-prevent polymer chains being broken down by sunlight
-UV attack causes colour loss and brittleness
-outdoor toys and play equipment