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  1. Master Bond
5 September 2022

Toughened, Non-Drip Epoxy Meets Nasa Low Outgassing Specifications

Master Bond EP40ND is a two-component epoxy system, designed for bonding, sealing and coating applications. It is a non-drip, toughened system with an easy-to-use 1:1 mix ratio by weight or volume. EP40ND meets Nasa’s low outgassing specifications and has a high elongation of 80-90% at 75°F. It adheres well to many plastics, such as polycarbonates and acrylics, making it appropriate for applications that use substrates prone to stress cracking.

This flexible system provides a low tensile modulus of 1,000-1,500 psi, and a relatively high lap shear strength of 1,600-1,800 psi. EP40ND has a Shore D Hardness measuring between 50-60 at 75°F. Serviceable from -100°F to 250°F, this electrically insulative compound can withstand rigorous thermal cycling, vibration, impact and shock.

EP40ND cures within 2-3 days at room temperature, or faster with the addition of heat. The viscosity of Part A is 50,000-100,000 cps, Part B is a thixotropic paste. It has a long working life after mixing. In addition to plastics, this epoxy adheres well to a variety of dissimilar substrates such as metals, composites, glass, and ceramics. EP40ND can be used in aerospace, semiconductor, electronic, opto-electronic and medical device industries. It is available in standard packaging, as well as premixed and frozen syringes. It is also available in double barrel cartridges for use with a gun dispenser.

For more information, please contact Masterbond via the contact details on our profile.

Structural polymers offer distinct advantages over traditional fastening methods. In this whitepaper, we explore the cornerstones of successful structural bonding.
A study conducted at L’École Polytechnique Fédérale de Lausanne (EPFL) in Lausanne, Switzerland, investigated alternative materials for use in high temperature control electronics packaging. Master...
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