Does epoxy get brittle?

Nick Shushan
By Nick Shusan , Epoxy Expert and the CEO of NYC Epoxy Flooring.

December 15, 2022

Epoxy can become brittle over time, especially if it is exposed to extreme temperatures or UV light. The rate at which it becomes brittle will depend on the specific formulation of the epoxy and the conditions it is exposed to. In general, epoxy is known for its durability and resistance to damage, but like any material, it can deteriorate over time and become more susceptible to cracking and breaking. To prevent this, it is important to store epoxy in a cool, dry place and avoid exposing it to extreme temperatures or UV light.

Epoxy does not get brittle, it gets hard and durable.

How do you make epoxy resin less brittle?

There are a few ways to make epoxy resin less brittle and improve its flexibility and durability. One method is to add a flexibilizer or plasticizer to the epoxy resin before it cures. These additives can help to make the epoxy more pliable and less likely to crack or break under stress. Another method is to carefully control the curing process of the epoxy. This can involve controlling the temperature and humidity during the curing process, as well as using a slower-acting hardener to allow the epoxy more time to fully cure and become less brittle. Finally, adding reinforcement materials, such as fibers or fillers, to the epoxy can also help to increase its strength and reduce its brittleness.