A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites
Abstract 3D‐printed polymer‐based composites are promising for various engineering applications due to high strength‐to‐weight ratios and design flexibility. However, conventional matrix materials, such as polylactic acid and epoxy resin, often exhibit brittleness and limited impact resistance (<...
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| Format: | Article |
| Language: | English |
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Wiley
2025-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202501450 |
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| author | Xiang Hong Peng Wang Yu Ma Weidong Yang Junming Zhang Zhongsen Zhang Yan Li |
| author_facet | Xiang Hong Peng Wang Yu Ma Weidong Yang Junming Zhang Zhongsen Zhang Yan Li |
| author_sort | Xiang Hong |
| collection | DOAJ |
| description | Abstract 3D‐printed polymer‐based composites are promising for various engineering applications due to high strength‐to‐weight ratios and design flexibility. However, conventional matrix materials, such as polylactic acid and epoxy resin, often exhibit brittleness and limited impact resistance (< 10 kJ m−2). Herein, a universal strategy is reported for enhancing the ductility and impact energy absorption of 3D‐printed composites by leveraging the dynamic crosslinking of B─O dative bonds. To validate its effectiveness, a smart composite (PLA/SSG) comprising shear‐stiffening gel fillers embedded in a polylactic acid matrix is designed and its rate‐dependent mechanical adjustability along with 3D printability is evaluated. The resulting composite shows significant improvements in impact resistance, ductility, and strength‐ductility balance. Specifically, the multiple crack and localized plastic yielding of polylactic acid matrix induced by shear‐stiffening gel fillers enables PLA/SSG with a 40‐times increase in ductility; the “soft‐hard” phase transition of shear‐stiffening gel induced by B─O bonds endows PLA/SSG with a 330% improvement in impact energy absorption. This B─O bonds‐inspired strategy provides a universal approach for printing smart impact‐resistant composites and structures. |
| format | Article |
| id | doaj-art-aa7788a936994ef38a90389c7c48a84d |
| institution | Matheson Library |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-aa7788a936994ef38a90389c7c48a84d2025-07-03T12:38:31ZengWileyAdvanced Science2198-38442025-07-011225n/an/a10.1002/advs.202501450A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed CompositesXiang Hong0Peng Wang1Yu Ma2Weidong Yang3Junming Zhang4Zhongsen Zhang5Yan Li6School of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 P. R. ChinaSchool of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 P. R. ChinaBeijing Institute of Technology Chongqing Innovation Center Chongqing 401120 P. R. ChinaSchool of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 P. R. ChinaSchool of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 P. R. ChinaSchool of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 P. R. ChinaSchool of Aerospace Engineering and Applied Mechanics Tongji University Shanghai 200092 P. R. ChinaAbstract 3D‐printed polymer‐based composites are promising for various engineering applications due to high strength‐to‐weight ratios and design flexibility. However, conventional matrix materials, such as polylactic acid and epoxy resin, often exhibit brittleness and limited impact resistance (< 10 kJ m−2). Herein, a universal strategy is reported for enhancing the ductility and impact energy absorption of 3D‐printed composites by leveraging the dynamic crosslinking of B─O dative bonds. To validate its effectiveness, a smart composite (PLA/SSG) comprising shear‐stiffening gel fillers embedded in a polylactic acid matrix is designed and its rate‐dependent mechanical adjustability along with 3D printability is evaluated. The resulting composite shows significant improvements in impact resistance, ductility, and strength‐ductility balance. Specifically, the multiple crack and localized plastic yielding of polylactic acid matrix induced by shear‐stiffening gel fillers enables PLA/SSG with a 40‐times increase in ductility; the “soft‐hard” phase transition of shear‐stiffening gel induced by B─O bonds endows PLA/SSG with a 330% improvement in impact energy absorption. This B─O bonds‐inspired strategy provides a universal approach for printing smart impact‐resistant composites and structures.https://doi.org/10.1002/advs.2025014503D‐printed compositesductilityimpact‐resistantstrength‐ductility synergy |
| spellingShingle | Xiang Hong Peng Wang Yu Ma Weidong Yang Junming Zhang Zhongsen Zhang Yan Li A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites Advanced Science 3D‐printed composites ductility impact‐resistant strength‐ductility synergy |
| title | A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites |
| title_full | A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites |
| title_fullStr | A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites |
| title_full_unstemmed | A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites |
| title_short | A Universal Toughening and Energy‐Dissipating Strategy for Impact‐Resistant 3D‐Printed Composites |
| title_sort | universal toughening and energy dissipating strategy for impact resistant 3d printed composites |
| topic | 3D‐printed composites ductility impact‐resistant strength‐ductility synergy |
| url | https://doi.org/10.1002/advs.202501450 |
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