The correct storage method of polymer polyols requires comprehensive consideration of container selection, environmental control and chemical compatibility. The specific points are as follows:
1. Container selection and sealing treatment
Material requirements
Containers made of steel, aluminum, polyethylene or polypropylene should be selected, and galvanized iron barrels or plastic barrels should be used first to ensure good sealing and avoid moisture absorption and oxidation.
Gas protection
It is recommended to fill nitrogen in the container to isolate oxygen and reduce the risk of oxidation reaction.
2. Storage environment control
Temperature management
The storage temperature must be controlled below 70℃, and it is recommended to store at room temperature (such as around 25℃) to avoid high temperature-induced degradation or low temperature-induced crystallization.
Light-proof and moisture-proof
The storage area must be away from direct sunlight and rain, keep the environment dry, and prevent moisture intrusion from causing performance degradation.
Fire prevention measures
The storage place should be away from fire sources and high-temperature equipment to reduce the risk of combustion.
3. Chemical compatibility and safety protection
Isolate taboo substances
Avoid contact with incompatible chemicals such as strong acidic substances and isocyanates to prevent reactions or contamination.
Operation protection
Due to the strong alkalinity of amino polyether polyols, protective equipment such as goggles and gloves should be worn during operation to avoid contact with skin or eyes.
4. Shelf life and maintenance management
Storage period
The shelf life of the product is usually 6-12 months. After the expiration, the performance must be tested and qualified before it can be continued to be used.
Regular inspection
The sealing of the container and the stability of the storage environment need to be checked regularly to ensure that there is no leakage or pollution.
5. Anti-pollution and environmental protection requirements
The storage area should be equipped with anti-leakage facilities to prevent leakage from entering the groundwater or surface water environment because of its poor biodegradability.
Through the above-mentioned standardized management, the chemical stability and physical properties of polymer polyols can be effectively maintained and their service life can be extended.