Electrically conductive adhesives 12 December 2019

Elecolit® conductive adhesives are both electrically and thermally conductive adhesives. They contain metallic filling materials, primarily silver flakes which creates efficient energy flow and high conductivity.

The percentage of conductive filler greatly influences the degree of conductivity within the adhesive. With a higher fill ratio, conductivity increases due to the fact that more conductive particles come in contact with each other to create a conducting path. Conductivity can further be improved through the size and geometry of the conductive particles that are used to fill the adhesive.

The adhesive curing process also plays a significant role in maximising conductivity. Shortened curing cycle times and excessively low curing temperatures can lead to low crosslinking density. Too short curing times or too low curing temperatures lead to the occurrence of low crosslinking density and the build-up of excessive bonding stresses within the adhesive. Until recently, the curing of conductive adhesives was a slow process.

However new developments in catalyst technology means conductive adhesives can be now cured within a few minutes. Several one-part Elecolit® conductive adhesives have been modified for the ability to snap cure. Elecolit® conductive adhesives are relatively simple to apply. With the appropriate selection of filler type, they can be dispensed through automated valves, high speed “Jet” dispensing systems, and screen printing.

There are many benefits to using conductive adhesives:

  • Lead and solvent-fee
  • Micro-dispensing by screen printing or jetting
  • Vibration resistant connections
  • High temperature resistance
  • No bleeding
  • Snap cure and lower temperature curing options available
  • RoHs compliant

Electrically conductive adhesive tape

Eurobond Adhesives Limited also supplies a range of high-quality technical tapes specifically developed for a range of applications in the electronics industry. High grade acrylic, silicone and electrically conductive adhesives are used in conjunction with the best available films and metal foils to give outstanding results for high performance consumer electronics, avionics, industrial electronics and telecoms. Our tapes are designed for applications including;

  • Electrical insulation
  • EMI/RFI shielding
  • PCB masking
  • Bonding of High temperature surfaces
  • Thermal management
  • Conductive connection and Fixing
  • Touch screen bonding
  • Electroplating masking

With the ever increasing range of mobile communications devices and electrical goods generally it is crucial to have good shielding of products to prevent interference, to have products that can improve your production throughput and the overall performance of the end product.

“We have a range of one and two part electrically conductive adhesives, conductive coatings, adhesive coated foils, fabrics and conductive transfer adhesive to help you. Our tapes can be supplied either single sided or double sided in a roll format or as bespoke die cut shapes to match your exact product profile,” comments Eurobond.

Claire Aldridge Deputy Editor t: +44 (0) 1727 743 889

Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.

Alongside visiting numerous companies, exhibitions and conferences around the world, Claire has also interviewed high profile figures – focusing on key topics impacting the sector and making sure readers stay up to date with the latest developments within the industry.