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Investigating Adhesives for Attaching Mirrors to Aluminium Plates

Investigating Adhesives for Attaching Mirrors to Aluminium Plates. OPTI 523L Individual Project by Melanie Saayman. Adhesives. Available: Loctite 326 Summers Optical Milbond 3M 2216 B/A gray Ordered: NuSil LS-6140 Dow Corning 732, Q3-6093 & 93-500 (samples requested) TBD:

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Investigating Adhesives for Attaching Mirrors to Aluminium Plates

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  1. Investigating Adhesives for Attaching Mirrors to Aluminium Plates OPTI 523L Individual Project by Melanie Saayman

  2. Adhesives • Available: • Loctite 326 • Summers Optical Milbond • 3M 2216 B/A gray • Ordered: • NuSil LS-6140 • Dow Corning 732, Q3-6093 & 93-500 (samples requested) • TBD: • GE Silicones RTV566 • PR-1440 Class A (PRC-DeSoto)

  3. Glass Samples • 70 x 70 x 5.5 mm • Status: Available • TBD: Prepare surfaces for adhesion by grounding

  4. Aluminium Samples • 50 x 50 x 12.5 mm • Status: Available • TBD: • Surface preparation: Sand surfaces using sandpaper

  5. Instron* • Status: • Expected to be available in +- 2 weeks • Expect to start taking measurements during the week of April 19th • *Wilson Instruments 2000 Series Rockwell Hardness Tester

  6. Accessories • 2.5 inch Flat Anvil: Keeps the sample 90 degrees perpendicular to the indenter.

  7. Lap Shear Tests - Background • Standard lap shear specimen design [1]: • Modified lap shear specimen designs to maintain axial loading [1]:

  8. Proposed Lap Shear Test

  9. Test Under Compression

  10. Variables • Choice of Adhesive • Bond area • Bond thickness

  11. References • [1] Petrie E. M., Handbook of Adhesives and Sealants pp. 149 -151

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