Master Bond Application Highlight

The Application

Customer wants to build a special wafer carrier that has aluminum parts glued together. The carrier is eventually to be soaked in acetone.

Finding the Answers

  • What temperature does the exposure to acetone take place?
  • What is the duration of exposure and how many times does this exposure occur?
  • Do you want low outgassing?
  • What viscosity are you looking for?

The Solution

Master Bond offers a variety of compounds that resist harsh chemicals

Making certain assumptions about the answers to the above questions, Venkat recommended EP41S-1.

EP41S-1 has outstanding chemical resistance. It was tested as a coating of about 0.020 inches thick on sand blasted steel. To optimize its chemical resistance, it was cured for 24 hours at room temperature followed by 2-3 hours at 200°F. The system was then immersed in a wide variety of chemicals including ethylene glycol, sodium hydroxide, toluene, gasoline, and more, for over 1 year. After 14 months, no failures were observed.

The operating temperature of EP41S-1 ranges from -60°F to +300°F. The viscosity of Part A is 10,000-15,000 and Part B is 250-400.

EP41S-1 also comes in a non-drip version, EP41S-1ND, and in a high temperature version, EP41S-1HT which is serviceable up to 400°F.

Summary of Products

Product Chemistry Viscosity Service Temperature Range
EP41S-1 Two part epoxy Low -60°F to +300°F
EP41S-1ND Two part epoxy Non-drip -60°F to +300°F
EP41S-1HT Two part epoxy Moderate -60°F to +400°F
EP62-1 Two part epoxy Low -60°F to +450°F
EP21ARHT Two part epoxy Moderate -60°F to +400°F
EP21ARHTND Two part epoxy Non-drip -60°F to +400°F
EP42HT-2 Two part epoxy Low -60°F to +450°F

Meet Our Tech Expert: Venkat Nandivada

imageVenkat Nandivada has been the Manager of Technical Sales at Master Bond Inc since 2010. He has a Masters degree in Chemical Engineering from Carnegie Mellon University. His hobbies include table tennis, cricket and soccer.

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