thermosetting
/ˈθɜːrmoʊˌsɛtɪŋ/
adjective
- Describing a material that becomes permanently hard and rigid when heated and cannot be remelted or reshaped.
- Thermosetting plastics are used in electrical components because they resist heat.
- The glue is thermosetting, so it hardens permanently in the oven.
- Many thermosetting polymers are used in the aerospace industry.
Antonyms