Point out the incorrect statement ?
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Answer: D. None of these
Explanation
None of the listed statements regarding cold and hot SBR rubber production are erroneous. Every premise presented concerning the comparison between hot and cold styrene-butadiene rubber is factually correct. The options correctly reflect the established industrial manufacturing parameters for synthetic rubber grades. Styrene-butadiene rubber is a major synthetic elastomer produced through the copolymerization of styrene and butadiene. Hot SBR polymerization occurs at elevated temperatures using peroxide catalysts, while cold SBR uses redox systems. Cold SBR exhibits superior tensile strength and abrasion resistance compared to conventional hot-polymerized rubber.
Automotive tire manufacturers overwhelmingly prefer cold SBR grades to maximize tread wear life and traction. Synthetic rubber plants adjust reactor temperatures to tailor polymer molecular weight distribution for specific applications. Rigid quality control in elastomer production ensures consistent performance in demanding industrial rubber products. Cold rubber is indeed superior in physical performance properties compared to hot rubber SBR grades. Polymerization temperature drastically alters the molecular structure and final properties of synthetic SBR rubber. Production of cold SBR operates at lower reactor temperatures, which helps control undesirable side branching reactions.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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