L2: Epoxy

Question 1

What is epoxy used for?

Answer 1

Epoxy is a two-component system used in the production of resins & dies (hardeners).

• Resin - monomer
• Hardener - polyamine
• Linking process called polymerization

Question 2

What is the biggest difference b/t epoxy and gypsum?

Answer 2

Epoxy SHRINKS while gypsum expands.

Question 3

What is one advantage & one disadvantage of epoxy vs gypsum?

Answer 3

Advantage: Epoxy has superior compressive strength & abrasion resistance
Disadvantage: Sets slowly; up to 16 hours