Common Polymers used in Engineering (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many main categories classify polymers based on structure and heating behaviour?
How many main categories classify polymers based on structure and heating behaviour?
Four
What key characteristic distinguishes thermoplastics from thermosets?
What key characteristic distinguishes thermoplastics from thermosets?
They can be reheated and reshaped
What happens to thermosets when they are heated?
What happens to thermosets when they are heated?
They form permanent crosslinks
Which property makes PTFE (Teflon) ideal for frying pans?
Which property makes PTFE (Teflon) ideal for frying pans?
Non-stick and heat resistant
What is the main difference between LDPE and HDPE?
What is the main difference between LDPE and HDPE?
LDPE is flexible; HDPE is rigid
What is Shellac obtained from?
What is Shellac obtained from?
Beetle dung
Why is Bakelite suitable for frying pan handles?
Why is Bakelite suitable for frying pan handles?
It is hard, brittle, and heat resistant
What defining property do elastomers possess?
What defining property do elastomers possess?
They stretch and return to shape
Which properties make PVC suitable for window frames?
Which properties make PVC suitable for window frames?
Versatile, low cost, easy to work
What is added to natural rubber to create vulcanised rubber?
What is added to natural rubber to create vulcanised rubber?
Sulphur
What is PMMA also known as, and what is it used for?
What is PMMA also known as, and what is it used for?
Acrylic/Perspex, used for shop signs
Which properties make silicone ideal as a bathroom sealant?
Which properties make silicone ideal as a bathroom sealant?
Soft, flexible, and waterproof