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Pregunta
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Respuesta correcta
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What kind of material is a vitrimer? :
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A plastic (polymer) |
What is the main special thing about vitrimers? :
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They are strong but can still be recycled |
In which year was the first vitrimer made? :
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2011 |
Who is the scientist whose team came up with vitrimers? :
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Ludwik Leibler |
Normal plastics are usually split into two main groups. Which two? :
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Thermoplastics and thermosets |
What happens to a vitrimer when you heat it past a certain point? :
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The bonds rearrange and it can be reshaped |
Why can normal thermosets (like cured epoxy) NOT be recycled easily? :
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Their bonds are locked permanently once set |
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Pregunta
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Respuesta correcta
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What chemical reaction lets the bonds swap places in many vitrimers? :
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Transesterification |
What is "Tv" in a vitrimer? :
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The temperature where the bonds start swapping |
Vitrimers were named after which everyday material because they soften slowly? :
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Glass |
Roughly what temperature is often needed to make a vitrimer flow? :
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About 160°C |
What is one big waste problem that vitrimers could help solve? :
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Old wind turbine blades going to landfill |
About how much wind turbine blade waste is expected worldwide by 2050? :
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43 million tonnes |
Which of these is a possible use for vitrimers? :
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Repairable car and plane parts |
What does "self-healing" mean for a vitrimer? :
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Cracks can close up again when heated |
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