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Experimental Examination of the Solidification of a Sugar-Wax Mixture

Experimental Examination of the Solidification of a Sugar-Wax Mixture. Brendon Lewis Heather Stern Alice Su. Thermal Analysis of Materials Processing Laboratory Tufts University Medford, MA June 5, 1998. Process - the mold - the thermocouple - the mixture.

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Experimental Examination of the Solidification of a Sugar-Wax Mixture

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  1. Experimental Examination of the Solidification of a Sugar-Wax Mixture Brendon Lewis Heather Stern Alice Su Thermal Analysis of Materials Processing Laboratory Tufts University Medford, MA June 5, 1998 TAMPL

  2. Process - the mold - the thermocouple - the mixture Experimental data - the temperature graph - microscope pictures Observations - Things we noted during the experiment Conclusion - What we learned - More research that can be done TAMPL

  3. We want to know: • What happens when a wax-sugar mixture is left to solidify at • room temperature • Cooling curves for each thermocouple • -Does the location of the thermocouple affect temperature • readings? • Microstructure of the solidified mixture TAMPL

  4. Experimental Setup - Creating the Mold: The mold: - Created using rapid prototyping - Placed two thermocouples to read temperatures in different parts of the mold thermocouples TAMPL

  5. Experimental Setup - Creating the Mixture The sugar mixture: -dissolve sugar in water -sugar heated to around 300oC or until amber color The wax mixture: - beeswax pellets The sugar-wax mixture: - Wax added into beaker containing the sugar solution when sugar solution turned amber TAMPL

  6. Results : The temperature time graph we obtained: • Shows a continuous decrease in temperature • The temperature near the wall of the mold was • lower than the temperature in the center TAMPL

  7. Results : The solid obtained after breaking the mold: A distinct sugar and wax region can be seen TAMPL

  8. Results : Different parts of the cone : Wax Sugar Sugar and Wax TAMPL

  9. Results: Sugar Region Sugar-wax interface Wax Region TAMPL

  10. Results : The microstructure of mixture upon solidification: Regions of sugar crystal in wax Regions of wax in sugar crystal TAMPL

  11. Conclusions: Mold: - Wax decreases in volume as temperature decreases - Difficult to remove cone from mold TAMPL

  12. Conclusions: Mold: - Wax decreases in volume as temperature decreases - Difficult to remove cone from mold Temperature: - Continuous cooling curve - Temperature readings near the outer edge were lower TAMPL

  13. Conclusions: Mold: - Wax decreases in volume as temperature decreases - Difficult to remove cone from mold Temperature: - Continuous cooling curve - Temperature readings near the outer edge were lower Microstructure: - Sugar appears smooth surfaced - Wax has uneven surface TAMPL

  14. Further Research Possibilities: • Try adding wax at different times during heating of sugar solution • Explore different sugar-wax concentrations • Try different cooling rates • Experiment with different shapes TAMPL

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