Yes, epoxy resins stored for long periods of time may fail. Epoxy resins are affected by a variety of factors during storage, including temperature, humidity, oxygen exposure, light, etc., which may result in changes or degradation of epoxy resin properties.
The following are some of the factors that may cause epoxy resins to fail:
1. Expiration date: Epoxy resins usually have a certain shelf life or expiration date. Beyond the expiration date, the performance of the epoxy resin may change, such as longer curing time, a lower degree of curing, etc. Therefore, it is recommended that epoxy resins be used before the expiration date.
2. Temperature and humidity: Epoxy resins are sensitive to temperature and humidity. Prolonged exposure to high temperatures or high humidity may result in changes in the chemical structure of the epoxy resin, which may affect its performance and curing characteristics.
3. Oxygen exposure: Epoxy resins are susceptible to oxygen, and prolonged exposure to air may result in oxidizing reactions occurring and deterioration of the epoxy resin. Especially two-component epoxy resins should avoid exposure to air before contacting the curing agent.
4. Light: Some specific types of epoxy resins are sensitive to ultraviolet and visible light, and prolonged exposure to sunlight or bright light may result in color change, yellowing, or reduced physical properties.
Therefore, in order to maintain the performance and quality of epoxy resins, it is recommended that the following storage recommendations be followed:
1. Store epoxy resins in a dry, cool place away from high temperatures and high humidity.
2. Seal containers to avoid oxygen contact.
3. If there are specific storage requirements, refer to the storage instructions provided by the epoxy resin manufacturer.
Please note that the above are general storage recommendations only. Specific epoxy resin products may have different requirements, so it is best to refer to the storage guidelines and recommendations provided by the manufacturer.
