Plastics = Polymers + Additives
Polymers are rarely used as they are directly from polymerization. In order to fulfil functional and aesthetic requirements there is need for thermal stabilizers, antioxidants, UV protectors, lubricants, plasticizers, flame retardants, fillers and reinforcements, colorants and other additives. These additives cause a dilemma. While extending the lifetime of the products, which is good from a sustainability point of view, they may also cause health issues during service and environmental end-of-life challenges and may consume non-renewable resources such as phosphorous for flame retardancy. There are definite challenges for the plastics value chains to manage these issues.
Task: Tyres for the automotive sector are a really big product. How come all tyres are black? What additive makes them black and why is it there?
Check answer
Answer: The additive is carbon black (incompletely combusted carbon) that blocks UV light from causing oxidation at the tyre’s inner parts, adds wear resistance, improves conductivity and regulates the Young’s modulus.
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