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Fall_1995_EXAM_4 - Polymer Processing Fall 1995 EMA 4666C...

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Polymer Processing - Fall 1995 Name EMA 4666C Final Exam ( Total Points = 100 ) Student ID # Read each question carefully. State any assumptions you make to answer the question/problem. 1. Define the following terms and use equations/illustrations where appropriate. (14 pts) a. Structural Foam b. Deborah Number c. Gate d. Filling Ratio e. Laminar Flow f. Transcrystallinity g. Troutonian 1
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2a. Draw and label the main components of a reaction injection molding system. (10pts) 2
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2b. Describe the chemical reactants and process controls for question 2a that are different from standard injection molding processes. (10pts). 3
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3a. Sketch and Detail a sheet molding process. Describe the main components and significance in terms of the process. (10pts) 4
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3b. Compare and contrast the sheet molding process in question 3a with a hand-lay up process for
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