Practice Thermosetting Plastics (1.2) - Classification of Plastics - Civil Engineering Materials, Testing & Evaluation - Vol 2

Practice: Thermosetting Plastics

Lesson 1.2Classification of Plastics

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9 questions

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6 sample questions

Question 1.
What is one characteristic that defines thermosetting plastics?
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Think about what happens when heat is applied to them.
Question 2.
Name an example of a thermosetting plastic.
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Think of plastics that cannot be reshaped once set.
3Question 3.
What happens to thermosetting plastics when heated?
- They melt
- They soften
- They undergo a permanent chemical change
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Think about the difference between melting and a chemical change.
4Question 4.
True or False: Thermosetting plastics can be reshaped after they are cured.
- True
- False
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Consider the characteristics of thermosetting vs thermoplastics.
Question 5.
If a thermosetting plastic is used in a high-temperature application, what properties must it have to perform effectively? Discuss at least three.
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Think about how these properties affect the application.
Question 6.
You have been tasked with selecting a material for a new electrical fitting that will operate in a hot environment. Would you choose a thermosetting plastic or a thermoplastic? Justify your choice.
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Consider how each type behaves when exposed to heat.

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