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Phenolic Microballoon

SP Phenolic Microballoon

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€90.75 Tax incl. €75.00 Tax excl.
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Special filler for the manufacture of easy sanding epoxy putties. Improves the properties of the resin fire resistance.

They cannot be used with resins containing styrene as polyester and vinylester resins.


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SP Microballons are hollow phenolic resin spheres with reddish/brown colouration. This tone makes them particularly useful for cosmetic fillet joints or fillers in wood construction, as well as structural adhesives for less demanding applications on softer timbers such as cedar. Although not as waterproof as glass microspheres, phenolic microballons are preferred for their excellent sanding characteristics.

In particular, they are used as fillers for the production of epoxy putties with easy sanding. Improves the fire resistance properties of the resin.

Phenolic microballons are not normally used with polyester or vinyester resins because they can be subject to styrene attack which may cause the spheres to collapse.

When storing microballons, it is particularly important to exclude air as they readily absorb atmospheric moisture which will affect the performance of the filled mix.

Composition: phenolic resin
Appearance: powder red / brown
Particle size: 50 microns
Particle density: 250 g/l
Densities of mix: 100 g/l

Type of Supply

Phenolic Microballoons x 1 kg, supplied in plastic kegs

Phenolic Microballoons x 2.5 kg supplied in cardboard box

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