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Oak Ridge National Laboratory Scientists Design Recyclable Composites Help Drive Net-Zero Goal November 21 2022

2022 Lucintel Composites Market Insights, November 21, 2022

Scientists at the Oak Ridge National Laboratory designed a recyclable polymer for carbon-fiber composites to enable circular manufacturing of parts that boost energy efficiency in automotive, wind power and aerospace applications.
Carbon-fiber composites, or fiber-reinforced polymers, are strong, lightweight materials that can help lower fuel consumption and reduce emissions in critical areas such as transportation. However, unlike metal competitors, carbon-fiber composites are not typically recyclable, meaning wider adoption could present waste challenges.
“Our goal is to extend the lifecycle of these materials by making reuse possible without sacrificing performance,” said ORNL’s Md Anisur Rahman.
The team’s approach incorporates dynamic covalent bonds that are reversible, enabling both carbon fiber and polymer recycling. The new polymer maintained mechanical strength in six reprocessing cycles, a sharp contrast to previously reported polymers.
“ORNL’s carbon-fiber composites enable fast processing and can be repaired or reprocessed multiple times, opening pathways to circular, low-carbon manufacturing,” said ORNL’s Tomonori Saito.

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