Apyrum can be used to provide flame retardation for soft PVC, and can also be combined with synergistic flame retardant systems. Apyrum comes in the form of a finely-ground powder when supplied for use in plastic. This variety of Apyrum has very low solubility in water, something that is desirable in many applications.
Fire class Euroclass Bs1D0 and the French fire class M1 are examples of fire classes that can be met through the use of Apyrum in PVC.
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 has met extremely high fire standards. PVC that has been flame retarded with Apyrum has met Euroclass Bs1D0 and the French fire class M1.
Choice of Apyrum product
The choice of Apyrum Powder used in the manufacturing of PVC varies depending on the material and application for which the PVC is to be used. In most cases, however, Apyrum 1002.09 or 1002.12 is used.
The amount of active substance is adapted through optimization to the material’s fire properties and to the degree of fire protection that is required.
The properties of Apyrum Powders are:
- White Powder
- Particle Size: : D50 ~8 micrometer
- Density: 2,0 kg/dm3
- Bulk density: 0,5-1,0 kg/dm3
- Dry substance: 99,8%
- Packaging for delivery: 20 kg sack on pallet, 800 kg large sacks.