The discussion revolves around the curing process of polyester resin that was initially exposed to cold temperatures. Participants explore whether the resin can eventually cure after being kept in a cold environment and the implications of using catalysts in such conditions. The conversation includes practical advice, personal experiences, and references to external resources related to resin curing in cold weather.
Participants express varying opinions on whether the resin will eventually cure, with some suggesting it may take time while others share personal experiences that indicate it can cure under the right conditions. There is no consensus on the outcome, and multiple views on the effectiveness of different heating methods are presented.
Participants mention the importance of proper mixing of the catalyst and the effects of temperature on diffusion rates, indicating that the discussion is limited by assumptions about the specific conditions and materials involved.
Thanks very much for both those links!jedishrfu said:
No. You preserved it.mess said:I also left the catalyst and resin outside in below freezing temperature, is there a chance i damaged it?
Baluncore said:No. You preserved it.
The problem with cold resin is mixing the catalyst into the thick cold resin. Poor mixing requires longer for the catalyst to diffuse or migrate through the mix. Diffusion is very poor at low temperatures. The heat generated by the reaction will accelerate the reaction, unless that heat is rapidly lost to a cold environment, in which case you must wait for the environment to warm.
I once waited for a week during a cold snap for polyester resin to set. It took another week before I could remove it from the mold.