Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics

In the present study, two magnolol based main chain benzoxazine polymers (MCBPs) are designed, synthesized and formulated into thiol-ene resins to develop high-performance polymer dielectrics. Initially, the thiol-ene thermoset films, Mag-M-4SH-80 and Mag-E-4SH-80, are obtained respectively using cl...

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Main Authors: Lu, Yong, Li, Qizheng, Zhang, Zhicheng, Hu, Xiao
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/165624
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1656242023-07-14T15:45:37Z Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics Lu, Yong Li, Qizheng Zhang, Zhicheng Hu, Xiao School of Materials Science and Engineering Engineering::Materials Benzoxazine Polymer Dielectrics In the present study, two magnolol based main chain benzoxazine polymers (MCBPs) are designed, synthesized and formulated into thiol-ene resins to develop high-performance polymer dielectrics. Initially, the thiol-ene thermoset films, Mag-M-4SH-80 and Mag-E-4SH-80, are obtained respectively using click chemistry. Being post cured via progressive temperature stage, Mag-M/E-4SH-80 performs complete ring opening polymerization and forms dual-cure polybenzoxazine (PBZ) products with excellent thermal and mechanical performances such as a high Tg of 236 °C and a flexure modulus of 2.5 GPa. Moreover, the thiol component of the resin introduces numerous dipoles to the resultant polymer networks, resulting in promising dielectric performances of the resin at both room temperature and elevated temperature. For instance, the Mag-M-4SH-80 film demonstrates a superior energy density (Ue) of 7.0 J/cm3@25 °C, which is among the top reported dielectric thermosets having same efficiency, and Mag-M-4SH-150 film reveals a Ue of 1.1 J/cm3@150 °C, significantly higher than the reported values of a great number of commercial heat resistant polymers. Herein, our findings not only expand the library of high-performance thiol-ene benzoxazine resins but also present their potentials as flexible dielectrics for energy storage for the first time, thus advance the functionality and capability of benzoxazine based materials in modern electronics. Nanyang Technological University Published version The authors acknowledge the support from Nanyang Technological University (NTU) with the grant number 04IDS000677N040 and the support from School of Materials Science and Engineering NTU on the present work. 2023-04-04T06:25:06Z 2023-04-04T06:25:06Z 2022 Journal Article Lu, Y., Li, Q., Zhang, Z. & Hu, X. (2022). Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics. Materials and Design, 224, 111359-. https://dx.doi.org/10.1016/j.matdes.2022.111359 0264-1275 https://hdl.handle.net/10356/165624 10.1016/j.matdes.2022.111359 2-s2.0-85142193503 224 111359 en 04IDS000677N040 Materials and Design © 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Benzoxazine
Polymer Dielectrics
spellingShingle Engineering::Materials
Benzoxazine
Polymer Dielectrics
Lu, Yong
Li, Qizheng
Zhang, Zhicheng
Hu, Xiao
Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
description In the present study, two magnolol based main chain benzoxazine polymers (MCBPs) are designed, synthesized and formulated into thiol-ene resins to develop high-performance polymer dielectrics. Initially, the thiol-ene thermoset films, Mag-M-4SH-80 and Mag-E-4SH-80, are obtained respectively using click chemistry. Being post cured via progressive temperature stage, Mag-M/E-4SH-80 performs complete ring opening polymerization and forms dual-cure polybenzoxazine (PBZ) products with excellent thermal and mechanical performances such as a high Tg of 236 °C and a flexure modulus of 2.5 GPa. Moreover, the thiol component of the resin introduces numerous dipoles to the resultant polymer networks, resulting in promising dielectric performances of the resin at both room temperature and elevated temperature. For instance, the Mag-M-4SH-80 film demonstrates a superior energy density (Ue) of 7.0 J/cm3@25 °C, which is among the top reported dielectric thermosets having same efficiency, and Mag-M-4SH-150 film reveals a Ue of 1.1 J/cm3@150 °C, significantly higher than the reported values of a great number of commercial heat resistant polymers. Herein, our findings not only expand the library of high-performance thiol-ene benzoxazine resins but also present their potentials as flexible dielectrics for energy storage for the first time, thus advance the functionality and capability of benzoxazine based materials in modern electronics.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Lu, Yong
Li, Qizheng
Zhang, Zhicheng
Hu, Xiao
format Article
author Lu, Yong
Li, Qizheng
Zhang, Zhicheng
Hu, Xiao
author_sort Lu, Yong
title Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
title_short Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
title_full Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
title_fullStr Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
title_full_unstemmed Biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
title_sort biobased dual-cure thiol-ene benzoxazine resins for high-performance polymer dielectrics
publishDate 2023
url https://hdl.handle.net/10356/165624
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