Recyclable thermosetting polymers for digital light processing 3D printing
3D printing of various polymers has attracted great attention and developed rapidly in recent years. Digital light processing (DLP) has recently emerged as a fast growing 3D printing technique due to its high resolution and high speed. However, the lack of printable high-performance materials limits...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520307243 |
| _version_ | 1819105074352226304 |
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| author | Zhiqiang Chen Meng Yang Mengke Ji Xiao Kuang H. Jerry Qi Tiejun Wang |
| author_facet | Zhiqiang Chen Meng Yang Mengke Ji Xiao Kuang H. Jerry Qi Tiejun Wang |
| author_sort | Zhiqiang Chen |
| collection | DOAJ |
| description | 3D printing of various polymers has attracted great attention and developed rapidly in recent years. Digital light processing (DLP) has recently emerged as a fast growing 3D printing technique due to its high resolution and high speed. However, the lack of printable high-performance materials limits its broad applications. In addition, with the increasing adoption of DLP 3D printing, the efficient recycling of printed thermosetting materials is highly desired. Herein, we proposed a two-stage curing approach involving dynamic reactions by using the acrylate-epoxy hybrid resin for the recyclable DLP 3D printing of high-performance thermosetting polymers. Bond exchange reactions (BERs) could establish covalent bonds between the acrylate network and the epoxy network, thus partially triggering the copolymerization. The resulting new polymers exhibited excellent mechanical properties. A small-molecule assisted BER method was then used to efficiently depolymerize the thermosetting printed parts into soluble oligomers, which were formulated with fresh photopolymers for the next round of printing. The reprinted samples still showed good mechanical properties comparable to the virgin ones. In addition, the new polymers demonstrated potential applications in 4D printing of smart actuators. This work opens a novel avenue for green manufacturing technologies. |
| first_indexed | 2024-12-22T02:16:28Z |
| format | Article |
| id | doaj.art-fd0d17a9d932497bbdffe72b3b25d01a |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T02:16:28Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-fd0d17a9d932497bbdffe72b3b25d01a2022-12-21T18:42:17ZengElsevierMaterials & Design0264-12752021-01-01197109189Recyclable thermosetting polymers for digital light processing 3D printingZhiqiang Chen0Meng Yang1Mengke Ji2Xiao Kuang3H. Jerry Qi4Tiejun Wang5State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an 710049, ChinaState Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an 710049, ChinaState Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an 710049, ChinaThe George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USAThe George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Corresponding authors.State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an 710049, China; Corresponding authors.3D printing of various polymers has attracted great attention and developed rapidly in recent years. Digital light processing (DLP) has recently emerged as a fast growing 3D printing technique due to its high resolution and high speed. However, the lack of printable high-performance materials limits its broad applications. In addition, with the increasing adoption of DLP 3D printing, the efficient recycling of printed thermosetting materials is highly desired. Herein, we proposed a two-stage curing approach involving dynamic reactions by using the acrylate-epoxy hybrid resin for the recyclable DLP 3D printing of high-performance thermosetting polymers. Bond exchange reactions (BERs) could establish covalent bonds between the acrylate network and the epoxy network, thus partially triggering the copolymerization. The resulting new polymers exhibited excellent mechanical properties. A small-molecule assisted BER method was then used to efficiently depolymerize the thermosetting printed parts into soluble oligomers, which were formulated with fresh photopolymers for the next round of printing. The reprinted samples still showed good mechanical properties comparable to the virgin ones. In addition, the new polymers demonstrated potential applications in 4D printing of smart actuators. This work opens a novel avenue for green manufacturing technologies.http://www.sciencedirect.com/science/article/pii/S02641275203072433D printingRecycleReprintBond exchange reactions (BERs) |
| spellingShingle | Zhiqiang Chen Meng Yang Mengke Ji Xiao Kuang H. Jerry Qi Tiejun Wang Recyclable thermosetting polymers for digital light processing 3D printing Materials & Design 3D printing Recycle Reprint Bond exchange reactions (BERs) |
| title | Recyclable thermosetting polymers for digital light processing 3D printing |
| title_full | Recyclable thermosetting polymers for digital light processing 3D printing |
| title_fullStr | Recyclable thermosetting polymers for digital light processing 3D printing |
| title_full_unstemmed | Recyclable thermosetting polymers for digital light processing 3D printing |
| title_short | Recyclable thermosetting polymers for digital light processing 3D printing |
| title_sort | recyclable thermosetting polymers for digital light processing 3d printing |
| topic | 3D printing Recycle Reprint Bond exchange reactions (BERs) |
| url | http://www.sciencedirect.com/science/article/pii/S0264127520307243 |
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