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Testing Procedures:

  • Prepare at least 3 6 adhesive joint specimens following procedures from the product’s technical data sheet

    • 3 adhesive joints should be prepared without any significant surface preparation methods

    • 3 adhesive joints should be prepared using surface preparation methods mentioned below

  • Place onto tensile testing machine and load until failure

  • Record stress and calculate an average overlap shear strength

  • Review data to check any abnormalities in data, these may suggest poor specimen preparation

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  • For best performance, part surfaces should be clean and free of grease

  • Steel:

    • Trichloroethylene is a common degreasing agent for steel

  • Carbon fibre:

    • Trichloroethylene is a common degreasing agent for thermoset plastics

    • acetone, or methyl ethyl ketone is an alternative

Research on Trichloroethylene (TCE):

  • Used a solvent for metal degreasing, as a refrigerant, and in dry cleaning fluid

  • TCE poses a human health hazard to the central nervous system, kidney, liver, immune system, reproductive system, and to the developing fetus

  • TCE is characterized as carcinogenic to humans by all routes of exposure (i.e., by inhalation, ingestion, and dermal exposure) by the U.S. Environmental Protection Agency (EPA).

Research on other off-the-shelf degreasing solvents options:

These products lack sufficient technical data sheet to fully validate its compatibility with our material. Its product description suggest that they are usable on a large variety of materials. Any of the options below should be sufficient. It will come down to what products are in-stock during the moment of purchase. Material testing will also be used to investigate the effectiveness and overall necessity of degreasing solvents for adhesive bonding.

Note: More information on surface preparation can be found here.

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