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Polymer Processing and Compounding Quiz

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Questions and Answers

What are the major requirements of an additive in polymer formulations?

High vapor pressure at high temperatures, compatibility with any polymer matrix, effectiveness in function, economic, stability under processing conditions

Highly hazardous or toxic, instability under processing conditions, low cost, compatibility with limited polymer matrices, low vapor pressure at high temperatures

Effectiveness in function, stability under processing conditions, economic, compatible with polymer matrix, low vapor pressure at high temperatures, non-hazardous or toxic (correct)

Low vapor pressure at high temperatures, instability under processing conditions, high cost, compatibility with any polymer matrix, effectiveness in function

What is the function of the clamping unit in the Injection Molding (IM) process?

Inject the molten polymer into the mold cavity

Open and close the mold (correct)

Hold the pressure during cooling time

Control the temperature of the molten polymer

What is the purpose of compounding in polymer processing?

To prepare plastic formulations by mixing polymers and additives to achieve desired characteristics (correct)

To alter the chemical properties of polymers through blending with additives

To increase the vapor pressure of polymers at high temperatures

To reduce the cost of polymers by diluting them with additives

What defines Injection Molding (IM) as a closed process?

The molten polymer mixes with short reinforcing fibers under high pressure into a mold cavity through an opening Signup and view all the answers

What is an additive in polymer processing?

Any substance added in small concentration to base polymer to facilitate processing or alter properties of final product. Signup and view all the answers