Journal
POLYMER COMPOSITES
Volume 43, Issue 10, Pages 7086-7098Publisher
WILEY
DOI: 10.1002/pc.26770
Keywords
3D printing; folded panels; mechanical properties; specific energy absorption; thermal channels
Categories
Funding
- Natural Science Foundation of Chongqing [cstc2021jcyj-msxmX0194]
- Natural Science Foundation of Shaanxi Province [2020JQ-114]
- Fundamental Research Funds for the Central Universities [G2022KY0601]
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This study proposes a manufacturing method for folded and straight corrugated plate structure using environmentally-friendly materials. Experimental investigations show that filling paraffin wax can change the compression failure mode of the sandwich materials, improving strength and energy absorption capacity. Paraffin wax exhibits excellent heat absorption and release performance, while the unfilled part can serve as a thermal flow channel.
A manufacturing method of folded and straight corrugated plate structure printed by environmentally-friendly polylactic acid filled with environmentally-friendly paraffin wax is proposed. Experimental investigations are conducted to characterize the out-of-plane compressive behaviors, including stress-strain curve, deformation processing, failure mode, strength, and energy absorption. By filling paraffin wax, the out-of-plane compression failure mode of sandwich materials from buckling (corresponding to empty corrugated sandwich panels) to wrinkling or crushing, which greatly improves the strength. Due to paraffin wax and its interaction with composite origami core, the energy absorption capacity is significantly enhanced. The research shows that the half-filled folded corrugated sandwich structure not only has excellent specific energy absorption advantages, the paraffin wax has excellent heat absorption and release performance, and the unfilled part is just used as a heat flow channel to facilitate the flow of heat. This work has created a new method for rapid preparation of lightweight sandwich materials with not only high specific strength and high specific energy absorption, but also thermal channels.
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