plastics Flashcards
1
Q
What is thermoplastic
A
-a type of plastic that becomes soft when heated and hardens when cooled
2
Q
What is thermosetting or thermoset
A
-a type of plastic that when heated becomes permanently rigid and hard
3
Q
What is epoxy
A
-a thermosetting plastic formed from the chemical reaction of a resin with a hardener
4
Q
What is plastic consist of
A
-refers to material composed of carbon atoms arranged in a long chain which are connected to other atoms such as oxygen ,nitrogen, hydrogen, sulphur and chlorine
5
Q
What are the characteristic of thermoplastic
A
- when heated molecules becomes soft and when exposed to room temp is harden
- allows it to be reshaped
6
Q
What are the characteristic of thermosetting
A
-sets permanently when high temp and pressure is applied and also set by chemical reaction
7
Q
What are thermosets valued for
A
- durability
- strength
- heat resistance
