What is the typical shelf life of polyester resins?

The typical shelf life of polyester resins is around 90 days when stored properly. This timeframe allows for the resin to maintain its chemical stability and performance characteristics. Factors such as temperature, exposure to moisture, and the presence of inhibitors can affect the shelf life, but 90 days is a standard guideline for ensuring the resin will cure correctly and provide the desired mechanical and physical properties when used.

Resins that are stored beyond this period may start to undergo degradation or changes, leading to inconsistencies in curing and potentially compromising the integrity of the final composite material. Regular checks on the resin's appearance and viscosity can help determine if it is still usable within this period.