Epoxy Resin Dry Time. When part A and part B are mixed, a chemical reaction occurs and creates heat. That heat created by the friction of the molecules will induce the hardening of the resin (note that the ambient temperature will also accelerate the heat). Understanding the chemistry behind epoxy is important to using epoxy properly. The time it takes for this chemical transformation to transform the epoxy from a liquid to a solid one is called cure time. While curing the CHILL EPOXY products based on their pot life will transform from the liquid form, increase in viscosity, gel before reaching a final solid state.
The more important the mass, the more heat is created inside the mass. The more heat, the faster the resin hardens. Consequently, when the layer is thicker, the resin will cure faster.
Epoxy Resin Dry Time
When using Epoxy Resin on a project, you will find that the curing time varies depending on what type of resin you are using. As you know, CHILL EPOXY offers different epoxy systems with specific pot life and reactivity. Therefore, some systems will cure faster than others. The shorter the pot life is the faster the epoxy will cure. For example, a 13 min pot life ( CHILL FIX 2:1 Ultra Fast-Setting Epoxy) will cure faster than the 600 min casting resin CHILL ICE 2 for river tables.
You will find the information of each product on the TDS, labels and packaging boxes. On average, a casting or medium setting epoxy will usually take about 72-86 hours to cure properly. Nevertheless, you must allow it to fully cure before you attempt to remove it from your mold, form and sand or move it. We always recommend to wait a period of 7 days at 72F/22C.
If you take out a project too fast and the epoxy is still curing, it might bend or sag. Leaving it cure for a few extra days will assure the molecule chain is completely closed. The goal is to make sure the epoxy has reached maximal hardness before demolding it.
Epoxy Pot Life/Reactivity
Each epoxy hardener has its own reactivity. Each product will go through the same cure stages, but at different speeds based on the reactivity of the hardener. Select the right system based on the pot life that will give you adequate working time.