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Epoxy Adhesive

Epoxy Adhesive

Description

Epoxy Adhesive is a chemical compound produced by blending epoxy resin (part a) & hardener (part b) in a particular proportionate ratio. After mixing the part a & part b there is process initiated where in there is a reaction in molecular chain resulting into an exothermic reaction. The curing time of epoxy adhesive depends totally on the type of application to be served. Curing procedure of this product highly depends on the temperature of the working environment. These Epoxy Adhesives are demanded where a strong bond is required. Right choice of resin & hardener allows you to modify the desired properties like Chemical Resistance, Mechanical Strength, Electric Properties & so on. These 2 component systems are majorly used in Construction Industry. Epoxy Adhesives are available in various grades depending on application, cure time / drying time, hardness, Required Tensile Strength.

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Properties:

  • Crystal Clear (Water Like Clear on Substrate)
  • Room Temperature Curing
  • High Shear Strength
  • Low Shrinkage
  • Superior Chemical Resistance
  • Good Pot Life

 

Applications:

  • Lamination
  • Clear Adhesive (Superior Clarity on Substrates)
  • Imitation Jewellery (Glass like transparent coating)
  • Metal to Metal bonding
  • Metal to Non-Metal bonding
  • Glass to Glass bonding
  • Plastic to Plastic bonding
  • Wood
  • Concrete

 

Application Procedure for Lamination / Clear Adhesive:

  1. Clean the surface of metal for dust, dirt & other particles by properly washing. Slight wipe with solvent can also help.
  2. Mix Resin & Hardener & apply properly on the substrate to be bonded or as a coating.
  3. Give an induction time of 2-5 minutes prior to application on substrate.

 

Application Procedure for other Bonding Solutions:

  1. The joint surface must be thoroughly degreased with a good degreasing solvent
    (e.g. acetone, toluene or trichloro-ethlylene).
  2. Ensure all oil, dirt and grease is removed. Alcohol or paint thinner use for such purpose is restricted. Surface can also be abraded with coarse emery paper or chemically etched for superior bonding. In case of abrasion please further carry out degreasing before applying adhesive.
  3. Mix the resin and hardener in required ratio. The mixed mass is applied by brush or spatula to the pre-treated joint surface. The two surfaces are then assembled in a suitable jig or fixture with just contact pressure until the adhesive sets. Optimum layer of 0.1mm to 0.2mm gives best lap shear results.

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Epoxy Adhesive Technical Specifications:

Slow Cure Fast Cure Clear Adhesive / Lamination
Resin Viscosity, cPs 30000-60000 30000-60000 10000-14000
Hardener Viscosity, cPs 20000-40000 20000-40000 5000-8000
Mixing Ratio, Parts by weight 100:80 100:80 100:50
Mixing Ratio, Parts by volume 100:100 100:100 100:50
Mix Viscosity, cPs 30000-50000 30000-45000 8000-12000
Mix Color, Visual Opaque slight yellow Opaque slight yellow Crystal Clear
Pot Life, Minutes 90-120 Minutes 60-90 Minutes 30-40 Minutes
Touch Drying time 6-8 hours 5-7 hours 3-4 hours
Through Curing 16h RT+4h 80ºC or 7 days full cure 16h RT+4h 80ºC or 7 days full cure 24h RT+ 7 days full cure
Hardness, Shore D 65-75 70-80 70
Tensile Shear Strength, Typical Values 12-15 MPa 10-13 MPa 8-10 MPa
Water Absorption, % Max 1 Max 1 Max 2
Resistivity 10^15 10^15 NA
System Polyamide based thixotropic system slow cure Polyamide based thixotropic system fast cure Amine based clear system quick cure for variety of adhesives and lamination
Packing Resin: 1Kg, 5Kg, 30Kg, 50Kg, 225Kg

Hardener: 0.8Kg, 4Kg, 40Kg, 180Kg

Resin: 1Kg, 5Kg, 30Kg, 50Kg, 225Kg

Hardener: 0.8Kg, 4Kg, 40Kg, 190Kg

Resin: 0.5Kg, 1Kg

Hardener: 200gm, 500gm

 

Storage:

  • Part A & Part B should be stored away from light & heat.
  • Partly emptied containers should be immediately closed after use to avoid exposure to light & heat.
  • Shelf life is around 1 year for both part a & part b.

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