How are flame retardants used in styrofoam?

How are flame retardants used in styrofoam?With the application scope of rigid polyurethane foam gradually expanding, there are higher requirements on the properties of foam, among which flame retardant is the main problem.Rigid polyurethane foam is widely used in refrigerators, freezers box insulation, cold storage, refrigerating vehicles and other insulation materials, buildings, storage tanks and pipes insulation materials, its more fundamental disadvantage is flammable.Now work with flame retardants manufacturers to see how flame retardants are used in foam plastics.

1. It has little influence on the performance of foam plastics;

2. add less and the effect is good;

3. The flame retardant effect does not decrease with the passage of time;

4. Low toxicity to ensure use;

5. Good miscibility with raw materials;

6. Liquid flame retardant viscosity shall not be too high;

7. Non-corrosive equipment and devices;

8. Low prices.