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3M Glass Bubbles - Microballoons



Microballoons are tiny glass bubbles (quarter of a grain of salt) which resin does not absorb, this makes them ideal for sanding, thickening, and as a non-skid additive to your resin.

3M K1 Glass Bubbles are engineered hollow glass microspheres that are
alternatives to conventional fillers and additives such as silicas, calcium carbonate,
talc, clay, etc., for many demanding applications. These low-density particles are used
in a wide range of industries to reduce part weight, lower costs and enhance product
properties. The unique spherical shape of 3M glass bubbles offers a number of
important benefits, including: higher filler loading, lower viscosity/improved
flow and reduced shrinkage and warpage. It also helps the 3M glass bubbles
blend readily into compounds and makes them adaptable to a variety of production
processes including spraying, casting and molding.The chemically stable
soda-lime-borosilicate glass composition of 3M glass bubbles provides excellent
water resistance to create more stable emulsions. They are also non-combustible and
nonporous, so they do not absorb resin. And, their low alkalinity gives 3M
glass bubbles compatibility with most resins, stable viscosityand long shelf life.
3M Glass Bubbles K Series are specially
formulated for a high strength-to-weight ratio. This allows greater
survivability under many demanding processing conditions, such
as injection molding. They also produce stable voids, which results
in low thermal conductivity and a low dielectric constant.

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