Journal
POLYMER COMPOSITES
Volume 42, Issue 2, Pages 634-641Publisher
WILEY
DOI: 10.1002/pc.25853
Keywords
alkaline lignin; carbon foam; glass fiber; graphitization; mechanical properties
Categories
Funding
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [15H01789, 2689005]
- Grants-in-Aid for Scientific Research [15H01789] Funding Source: KAKEN
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Sandwich-structure materials consist of a high-strength skin material and a lightweight core material, offering excellent mechanical properties and low weight advantages. However, soft-core materials with low rigidity may not perform adequately in sandwich structures. This research aimed to reduce environmental impact and promote sustainable development by developing high-strength carbon foam and enhancing its mechanical properties.
Sandwich-structure materials consist of a high-strength skin material and a lightweight core material. The advantages of sandwich structures are known to include excellent mechanical properties and low weight, the latter of which is the result of a lightweight core. However, soft-core members such as plastic foam materials have low rigidity and therefore may not exhibit adequate functionality when used in sandwich structures. This research sought to reduce environmental impact and to facilitate sustainable development by developing a method for fabricating high-strength carbon foam using alkali lignin for use as an FRP sandwich core and enhancing the mechanical properties of the carbon foam with short glass fiber. PMMA particles decomposed at high temperatures to leave gaps, creating carbon foam with a closed structure. The relationship between PMMA particle size and foam pore size was investigated by observing cross-sections of the foam.
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