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Both temperature and sunlight can affect the storage time of unsaturated polyester resins. In fact, whether it is unsaturated polyester resin or ordinary resin, the storage temperature is the best at the current regional temperature of 25 degrees Celsius. On this basis, the lower the temperature, the longer the validity period of the unsaturated polyester resin; the higher the temperature, the shorter the validity period.
The resin needs to be sealed and stored in the original container to prevent the loss of monomer volatilization and the fall of foreign impurities. And the lid of the packaging barrel for storing resin cannot be made of copper or copper alloy, and it is best to use polyethylene, polyvinyl chloride and other metal lids.
Generally speaking, in the case of high temperature, it is enough to avoid direct sunlight to the packaging barrel. However, the shelf life will still be affected, because in high temperature weather, the gel time of the resin will be shortened a lot, and if the resin is of poor quality, it will even be directly cured in the packaging barrel.
Therefore, during the high temperature period, if conditions permit, it is best to store it in an air-conditioned warehouse with a constant temperature of 25 degrees Celsius. If the manufacturer does not prepare an air-conditioned warehouse, it must pay attention to shortening the storage time of the resin.

It is important to note that resins mixed with styrene must be treated as flammable hydrocarbons to prevent fires. The warehouses and workshops that store these resins must have very strict management, and do a good job of fire prevention and fire prevention at any time.

Safety matters that must be paid attention to during the processing of saturated polyester resin in the workshop
1. Resin, curing agent and accelerator are all flammable materials, and attention must be paid to fire prevention. Some accelerators and resins must be stored separately, otherwise it is easy to cause explosion.
2. There must be no smoking and no open flames in the production workshop.
3. The production workshop must maintain adequate ventilation. There are two forms of ventilation in the workshop. One is to maintain indoor air circulation so that volatiles of styrene can be removed at any time. Because styrene vapor is denser than air, the concentration of styrene near the ground is also relatively high. Therefore, it is best to set the air outlet in the workshop close to the ground. The other is to locally exhaust the operating area with the help of tools and equipment. For example, a separate exhaust fan is set up to extract the high-concentration styrene vapor discharged from the operation area, or the flue gas is exhausted through the general suction pipe set in the workshop.
4. In order to deal with unexpected events, the production workshop must have at least two exits.
5. The resin and various accelerators stored in the production workshop should not be too much, and it is best to store a small amount.

6. The resins that have not been used but have been added with accelerators should be transferred to a safe place for dispersed storage, so as to prevent a large amount of heat from accumulating in the accumulation and causing explosions and fires.
7. Once the unsaturated polyester resin leaks, it will cause a fire, and the toxic gas will be discharged during this process, which will endanger human health. Therefore, emergency measures must be taken to deal with it.