SP Microballoons are hollow phenolic resin spheres which have a distinctive reddish/brown colouration. This makes them particularly useful for cosmetic fillet joints and 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 bubbles, microballoons are often preferred for their excellent sanding
characteristics. Microballoons are not normally used with polyester or
vinylester resins because they can be subject to styrene attack which
may cause the spheres to collapse.
When storing microballoons, it is particularly important to exclude air as
they readily absorb atmospheric moisture which will affect the performance
of the filled mix.
Product Details
Composition: Phenolic Resin
Appearance: Red/Brown Powder
Particle Size: 50 microns
Particle Density: 250g/litre
Bulk Density: 100g/lit