Unit 2- Uses Of Plastics And Synthetic Fibres Flashcards
What are most plastics and synthetic fibres made from?
Chemicals derived from oil
What are synthetic materials made by?
The chemical industry
Name 7 plastics
Polythene Polystyrene Perspex PVC nylon Kevlar Bipol
Name a property of Kevlar
It’s very strong
Name a property of polyethenol
It readily dissolves in water
Name 2 polyesters
Terylene
Nylon
Name a property of bipol and what it is used for
This polyester is biodegradable and is used for carrier bags and other disposable items
Do most plastics have a high or low density and what effect does this have?
Low density and they are very durable therefore they cause environmental problems
What toxic fumes can be given off as a result of burning or smouldering plastics?
Carbon monoxide
What does thermoplastic mean?
A plastic which can be reshaped on heating
What is a thermosetting plastic?
Cannot be reshaped on heating
