Kemtron Ltd
19-21 Finch Drive
Braintree, Essex.
CM7 2 SF, UK.
Tel: +44 (0)1376 348115
Fax: +44 (0)1376 345885

Quicklinks to conductive RTV/Epoxy Materials:

.
.

Kembond Epoxy SE-002

 
2part
epoxy adhesive
 
Kembond Epoxy is a two component electrically conductive adhesive comprising of a modified epoxy resin filled with conductive silver particles. It cures on exposure to air at room temperature to form an electrically conductive structural adhesive. Once cured it adheres strongly to a wide range substrates. Can generally be used a replacement for CA722.

Main features

  • - Very high bond strength
  • - Room temperature cure
  • - Flexible - degree is variable by adjusting mix ratio
  • - Extremely resisitant to fracture
  • - Safe for use with most common substrates - non tarnishing / discolouring
  • - Excellent resistance to ageing
  • - Wide service temperature range - retains strength and conductivity at extremes of temperature
  • - Stable - low bond (joint) resistance through temperature cycling

Applications

  • - Structural adhesive - can be used to permanently bond metal assemblies, EMI windows etc.
  • - Electrical connection of components avoiding the use of mechanical fixings or solder
  • - EMI shielding with environmental sealing
  • - ESD control/grounding
 

Uncured Properties

ColourSilver
FormSemi viscous paste
Cure time at 23 °C/50% RH24 hours   
Recommended minimum time before stressing bond48 hours
 

Cured Properties

Density3.0 g/cm³
Adhesion - lap shear (aluminium to aluminium)850 N/cm²
Service temperature range-50°C to 200°C
Bond resistance (aluminium to aluminium)<10mΩ/cm²
Thermal conductivity4.8 Wm/K
Recommended bond thickness< 0.25mm
 

Packaging


Kembond Epoxy SE-002 can be supplied in either 4ml or 10ml double syringe packs. The material is automatically dispensed in the correct 50:50 ratio. Alternatively, this material can be supplied in separate syringe barrels where variable mix ratios are to be used.

Storage


It is recommended that when not in use that the material is stored in a cool dark, dry place. If kept properly sealed and in a suitable location then the material will remain usable for up to 6 months.

Handling


When using this material observe usual standards of industrial hygiene/practice. Avoid skin/eye contact and work in a well ventilated area. For more detailed information please refer to the MSDS (Material Safety Data Sheet)

Instructions for use


Surfaces should be clean dry and sound i.e. free from loose material. It is recommended that areas to be bonded are cleaned using a suitable solvent prior to applying the sealant
 
To ensure the highest level of electrical or shielding performance it is essential that the surfaces to be bonded have a low contact resistance. This means that materials that have a naturally occurring oxide layer such as aluminium alloys may need to be lightly abraded and cleaned directly prior to bonding.
 
The adhesive mix ratio may be varied in order to modify the cured properties. For most applications we would recommend a 50:50 mix ratio that will result in a cured adhesive with a small degree of flexibility, high strength and reasonably good low temperature performance.
 
Increasing the proportion of hardener up to around a maximum of 125:50 will result in a cured adhesive with a relatively high degree of flexibility along with improved low temperature performance but other physical properties will be reduced.
 
Ensure the two components are thoroughly mixed. Once mixed this material has a working (or pot) life of approximately one hour (depending on the ambient temperature) and may be transferred to a syringe for precise application if required.
 
Assemble parts as soon as possible and certainly within 15 - 30 minutes of adhesive application
 
In most cases parts may be handled after 12 hours but avoid stressing the joint until full cure has been achieved
 
Cure rate may be controlled by means of temperature. The adhesive will fully cure within 3 hours at 60oC. If curing at elevated temperatures be careful to avoid excessive adhesive outflow due to the uncured adhesive viscosity reducing during the curing process.
 
Excess material should be removed by means of a spatula or similar implement. Smaller traces of the uncured material may be removed by wiping with a lint free cloth damped with methylated spirit, isopropyl alcohol or MEK taking care to observe the safety precautions required in using flammable/harmful solvents of this type
 
A priming agent is available for treating some inconsistent or difficult to bond surfaces. Please contact us for further information

Product Notes


To the best our knowledge the information contained in this data sheet is accurate and representative of the product, however, it is the responsibility of the user to determine the suitability, safety and legality of use in any application
 
We recommend that the end user performs an evaluation to determine the suitability of the product in their application
 
This product is not intended for direct use in food, medical and cosmetic applications
 
The values shown on this data sheet are typical and should not be used as the basis of a specification
 
Information supplied as to the suggested applications for this product should not be construed as constituting a license or concession to infringe any patent. Furthermore we cannot warrant that the sale or use of this product will not infringe any patent involving any application of this product either on its own or in combination with other materials or process
 
Valid HTML 4.01Valid CSS