1.2. Thermosetting Plastics

Try these first

1. 1.

   What is one characteristic that defines thermosetting plastics?

   Hint

   Think about what happens when heat is applied to them.

2. 2.

   Name an example of a thermosetting plastic.

   Hint

   Think of plastics that cannot be reshaped once set.

3. 3.

   What happens to thermosetting plastics when heated?

   • They melt
   • They soften
   • They undergo a permanent chemical change

   Hint

   Think about the difference between melting and a chemical change.

4. 4.

   True or False: Thermosetting plastics can be reshaped after they are cured.

   • True
   • False

   Hint

   Consider the characteristics of thermosetting vs thermoplastics.

5. 5.

   If a thermosetting plastic is used in a high-temperature application, what properties must it have to perform effectively? Discuss at least three.

   Hint

   Think about how these properties affect the application.

6. 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.

   Hint

   Consider how each type behaves when exposed to heat.