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Questions and Answers
What are the major requirements of an additive in polymer formulations?
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?
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?
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?
What defines Injection Molding (IM) as a closed process?
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What is an additive in polymer processing?
What is an additive in polymer processing?
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What is the purpose of rubber toughening in thermoplastic polymers?
What is the purpose of rubber toughening in thermoplastic polymers?
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What are the typical sizes of rubber particles used in rubber toughening?
What are the typical sizes of rubber particles used in rubber toughening?
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What is the role of rubber particles in the mechanism of rubber toughening?
What is the role of rubber particles in the mechanism of rubber toughening?
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Which materials are commonly used for rubber particles in rubber toughening?
Which materials are commonly used for rubber particles in rubber toughening?
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How do rubber particles contribute to energy absorption in rubber toughening?
How do rubber particles contribute to energy absorption in rubber toughening?
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