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New Optically Clear Flexible Epoxy Adhesive for Stress Relief Applications: Master Bond

Published on 2019-06-11. Author : SpecialChem

TAGS:  Epoxy Adhesives    

master-bond-optically-clear Master Bond has launched a two component epoxy, Master Bond EP88FL which is a highly flexible, optically clear compound formulated for bonding, coating, sealing, potting and encapsulation. It is easy to use, with a mixing ratio of one to one by weight or volume.

Master Bond EP88FL: Applications and Specifications


EP88FL:
  • Withstands thermal cycling and shock
  • Is ideal in applications where stress relief is needed
  • Has a tensile modulus ranging from 10,000 psi to 20,000 psi
  • Provides an elongation of 30-50%
  • Bonds well to a wide variety of substrates such as metals, ceramics, plastics and glass
  • Has refractive index of 1.51 at 589 nm, making the system relevant for applications in optics, opto-electronics, aerospace and OEM

Despite curing with a good degree of flexibility, it cannot be considered soft since it has a Shore D hardness between 45-55 at 75°F

The mixed viscosity of EP88FL is 800-1,200 cps at room temperature, and its working life is 20-30 minutes for a 100 gram batch. EP88FL can be cured at room temperature or elevated temperatures. The optimal cure is overnight at 75°F plus 1 to 2 hours at 150-200°F. Master Bond EP88FL is available in standard packaging ranging from ½ pint to 5 gallon containers as well as specialty packaging including FlexiPaks®, syringes and gun dispensers.


Source: Master Bond
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