Apyrum can be used to provide flame retardation for soft PVC, and can also be combined with synergistic flame retardant systems. Applications that can be made flame retardant with Apyrum are wall covers, flooring, thin film, cable and technical textiles.
Apyrum comes in the form of a finely-ground powder when supplied for use in plastic. This variety of Apyrum has low solubility in water, something that is desirable in many applications.
Different fire classes can be obtained depending on how much fire retardant is used, the material properties and other additives such as plasticizers and stabilizers.
Mixing and application process
The most common way to integrate Apyrum into PVC is by adding it in the same manner as with other types of additives, e.g. by mixing the powder and liquid components into a batter. However, just like other additives, it is important that Apyrum is well-dispersed in the host material.
It is important to optimize the amount of flame retardant used since the balance between the active substance and material weight as well as it’s inherent fire properties are that which determines the result.
Apyrum can be processed in Mixers and Batters and extruders and calendars. Also very good results in PVC plastisols.
You can expect that some reformulation of your current formulation is needed and for optimal functionality.
Expected results & properties
- Fire retardant PVC that is treated with Apyrum can meet Euroclass Bs1D0 and NFP 92503, M1.
- Low smoke release
- Little impact on physical properties and mechanical performance