Best temperature for epoxy resin. The temperature must be the closest to 22°C/72F. Each C/F over 22°C/72F will have an impact on the curing process. To avoid any problem or imperfections follow the instructions and pour in a controlled environment.
Temperature is one of the most important factors when it comes to epoxy curing process. Unfortunately, this aspect is often neglected by beginners but also by users with a lot of experience. It is essential that the temperature of your working area and during the entire curing process is optimal. In order to achieve a perfectly clear bubble-free project, the temperature needs to be at 72F/22C to keep the viscosity as low as possible. Colder weather and room temperature will increase the viscosity and trap more bubbles.
Why does the resin mixing temperature matter?
The CHILL EPOXY products formulated by Polymeres Technologies have been designed and tested at a laboratory/QC room temperature of 72F/22C. These specs will ensure that you get the best results. As you know, epoxy consists of a resin part and a hardener. When properly mixed, the epoxy will cause a chemical reaction and thus heat. In order to catalyze properly and achieve the best properties, the epoxy will need to create a certain exothermic curve. In order to achieve this, and not to generate too much heat or harden too slowly a constant temperature without variation is necessary.
A temperature that is too cold and even a few degrees below the recommendations is enough to slow down the curing process. You will quickly understand that too high a temperature can also lead to bad results. Among other things, if the resin overheats, it will yellow, shrink and cause more moisture and bubbles to escape from your wood. For these reasons, it is important to keep a constant temperature of 72F/22C during the casting process as well as for the next few days when the epoxy tries to close its molecular chain.