Product Announcement from Trelleborg Offshore

Low Density Microsphere-Image

Eccospheres® glass microspheres are hollow thin-walled glass microspheres composed of sodium borosilicate glass. To the naked eye they resemble a fine, white, free-flowing powder. However, magnification reveals them to be near perfect spheres. Due to their exclusive glass chemistry and method of manufacture, Eccospheres® glass microspheres exhibit the following properties:

  • High temperature resistance
  • Good density/strength ratios
  • Clean surface chemistry
  • Narrow particle size distribution
  • Low thermal conductivity
  • Low dielectric constant
  • Low dissipation factor

Eccospheres® glass microspheres help reduce costs, enhance properties and improve processability.

Trelleborg Emerson & Cuming manufacture five distinct product series. All five series are produced from a high silica glass resulting in material integrity up to 800°C / 1,472°F. Eccospheres® glass microspheres exhibit excellent density/strength ratios - due to the removal of sinkers - and high packing factors. However, additional steps during manufacture have resulted in unique properties for each series.

IG Series: Specifically developed for industrial applications the IG series of Eccospheres® glass microspheres are manufactured to the same high standards as other series. This range does not undergo final washing or floating processes.

FTD Series: The FTD series are washed to remove surface salts, this results in an ideal surface topography for resins or surface treatments to key to. The clean ion exchanged surface ensures compatibility with almost any resin system and in particular this series is recommended for sulfur sensitive systems.

SI Series: Surface salts formed during manufacture are removed via acid washing. This reduces the alkali content and results in a clean surface chemistry compatible with almost any resin system or surface coating.

SID Series:The SID series has the same chemical composition as the SI series, however, due to Trelleborg Emerson & Cuming's unique manufacturing capabilities this series exhibits improved strength, without sacrificing density. High strength ensures survival of the spheres in aggressive processes such as extrusion. All the grades in this series are acid washed to provide a clean surface for either a resin system or surface treatment to bond to.

 
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