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IR review for Lab report 1

IR review for Lab report 1. Nylon example What actually happened in Lab 2. Triethylenetetramine. Triethylenetetramine. Diethylene triamine. Diethylene triamine. Poly(bisphenol-A-co-epichlorohydrin). Poly(bisphenol-A-co-epichlorohydrin). Review of Heat Transfer. Caroline Schauer

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IR review for Lab report 1

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  1. IR review for Lab report 1 Nylon example What actually happened in Lab 2 © Caroline Schauer 2007

  2. Triethylenetetramine © Caroline Schauer 2007

  3. Triethylenetetramine © Caroline Schauer 2007

  4. Diethylene triamine © Caroline Schauer 2007

  5. Diethylene triamine © Caroline Schauer 2007

  6. Poly(bisphenol-A-co-epichlorohydrin) © Caroline Schauer 2007

  7. Poly(bisphenol-A-co-epichlorohydrin) © Caroline Schauer 2007

  8. Review of Heat Transfer Caroline Schauer Department of Materials Engineering Drexel University © Caroline Schauer 2007

  9. Steady State Heat Transfer Fourier law • Plane: • Cylinder: • Sphere: © Caroline Schauer 2007

  10. Non-Steady State Heat Transfer Fourier law Few analytical solutions. Numerical solutions via finite elements are easily obtained for complex geometries © Caroline Schauer 2007

  11. Non-Steady State Heat Transfer Plate: Assuming highly effective removal Of heat from the surface © Caroline Schauer 2007

  12. Non-Steady State Heat Transfer © Caroline Schauer 2007

  13. Convection Heat removal from surface due to moving fluid © Caroline Schauer 2007

  14. Convection limited cooling of an infinite plate Tw=temp of cooling medium Convection limited Conduction limited © Caroline Schauer 2007

  15. Convectionhow to determine h? To compute the convection coefficient evaluate properties at average temperature © Caroline Schauer 2007

  16. Thermal diffusivity of polymers is LOW © Caroline Schauer 2007

  17. Semicrystalline Amorphous Thermal conductivity © Caroline Schauer 2007

  18. Recall that conductivity -> steady state diffusivity -> transient Note the dip in diffusivity Around melting point © Caroline Schauer 2007

  19. Specific Heat © Caroline Schauer 2007

  20. Specific Heat – Effect of fillers (glass fibers here) © Caroline Schauer 2007

  21. © Caroline Schauer 2007

  22. © Caroline Schauer 2007

  23. © Caroline Schauer 2007

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