ABS (acrylonitrile–butadiene–styrene) copolymer: which classification best fits ABS in engineering usage?
Chemical Engineering
Polymer Technology
Difficulty: Easy
Choose an option
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ARigid foam
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BEngineering plastic
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CThermosetting polymer
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DSpongy rubber
Answer
Correct Answer: Engineering plastic
Explanation
Introduction / Context:ABS blends toughness from rubbery butadiene with rigidity from styrene–acrylonitrile. It is injection-moulded into housings, automotive parts, and appliances—hallmarks of engineering plastics.
Concept / Approach:Engineering plastics are thermoplastics with improved mechanical and thermal performance over commodity resins. ABS fits this category, not thermosets or foams by default.
Final Answer:Engineering plastic