Deformable Conductive Bondline Spacers – Silver-Coated PMMA Microspheres

PMPMS AG 1 5 125 150um Deformable Conductive Bondline Spacers - Silver-Coated PMMA Microspheres

What are bondline spacers? Microspheres are widely used as bond line spacers because today’s technological advancements are demanding tighter and tighter tolerances.  Assembly of many instruments, especially in electronics, optics, biotechnology, calibration, and medical devices, requires holding precise spacing between parts. Depending on the requirements of the application, a rigid non-flexible bond line may be … Read more

Microspheres as Bond Line Spacers in Epoxies

Microspheres as Bond Line Spacer

Spacer Grade Glass Microspheres are presently used in gas plasma displays, automotive mirrors, electronic displays, flip chip technology, filters, sporting goods equipment, calibration standards and transformer manufacturing. Every day engineers are finding new and innovative uses for bond line spacers.

Advantages of Borosilicate Glass Microspheres in 0.03mm to 0.2mm sizing

Borosilicate Glass Microbeads
BSGMS 63-75 micron at 40x magnification

High quality glass microspheres for research and development are always in high demand.? In an effort to better serve scientists Cospheric recently added a complete line of high quality borosilicate microspheres, and microbeads.

Borosilicate glass offers? advantages over standard soda lime glass microbeads.

  • Roundness is >90%?? (Soda lime >85%)
  • Density is the lowest of most glasses at 2.2g/cc? (Soda Lime 2.5g/cc)
  • Very low thermal expansion coefficient? 32×10-7/?C?? (for 30-300?C)?? (Soda Lime:? 90×10-7/?C)

The high roundness, and low thermal expansion make borosilicate spheres an excellent candidate for use as spacers in epoxy bond lines, or other applications which require stability over a wide temperature range.

Borosilicate glass spheres are now offered in narrow size ranges from 0.03mm to 0.2mm with greater than 90% of the particles in range.

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