An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness
Abstract With the aim to reduce the influence of flammability and brittleness of epoxy resin (EP) on its applications, a phosphorus‐containing oligomer (BID) containing phosphophenanthrene group and flexible chain segment is designed and applied to methyltetrahydrophthalic anhydride (MeTHPA) curing...
Main Authors: | , , , , , , , |
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Format: | Article |
Language: | English |
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Wiley-VCH
2023-04-01
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Series: | Macromolecular Materials and Engineering |
Subjects: | |
Online Access: | https://doi.org/10.1002/mame.202200550 |
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author | Huijuan Zhao Huajun Duan Junjun Zhang Lu Chen Chao Wan Chenhao Zhang Chentao Liu Huiru Ma |
author_facet | Huijuan Zhao Huajun Duan Junjun Zhang Lu Chen Chao Wan Chenhao Zhang Chentao Liu Huiru Ma |
author_sort | Huijuan Zhao |
collection | DOAJ |
description | Abstract With the aim to reduce the influence of flammability and brittleness of epoxy resin (EP) on its applications, a phosphorus‐containing oligomer (BID) containing phosphophenanthrene group and flexible chain segment is designed and applied to methyltetrahydrophthalic anhydride (MeTHPA) curing EP systems. Compared with EP/MeTHPA, the glass transition temperature (Tg) declines after introducing BID. But the addition of BID endows EP/MeTHPA with good flame retardancy. When the dosage is only 19.2 wt.%, the limiting oxygen index (LOI) of EP/BID/MeTHPA increases by 77% to 36% (P content: 1.5 wt.%) compared with EP and reaches the vertical combustion (UL‐94) V‐0 rating. Cone calorimetry (CC) results reveal that PHRR and THR drop by 40% and 31%. The pyrolytic process and char residue data analysis show that BID plays flame‐retardant role in gas phase and condensed phase. In addition, impact and flexural and tensile strength improve by 84%, 19% and 54% individually, proving that BID holds a potential on enhancing mechanical performance of EP/MeTHPA. |
first_indexed | 2024-03-12T14:51:47Z |
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id | doaj.art-7c604ad29ffd46dea7bc14e7443ae7a2 |
institution | Directory Open Access Journal |
issn | 1438-7492 1439-2054 |
language | English |
last_indexed | 2024-03-12T14:51:47Z |
publishDate | 2023-04-01 |
publisher | Wiley-VCH |
record_format | Article |
series | Macromolecular Materials and Engineering |
spelling | doaj.art-7c604ad29ffd46dea7bc14e7443ae7a22023-08-15T09:10:27ZengWiley-VCHMacromolecular Materials and Engineering1438-74921439-20542023-04-013084n/an/a10.1002/mame.202200550An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and ToughnessHuijuan Zhao0Huajun Duan1Junjun Zhang2Lu Chen3Chao Wan4Chenhao Zhang5Chentao Liu6Huiru Ma7School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 ChinaDepartment of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 ChinaAbstract With the aim to reduce the influence of flammability and brittleness of epoxy resin (EP) on its applications, a phosphorus‐containing oligomer (BID) containing phosphophenanthrene group and flexible chain segment is designed and applied to methyltetrahydrophthalic anhydride (MeTHPA) curing EP systems. Compared with EP/MeTHPA, the glass transition temperature (Tg) declines after introducing BID. But the addition of BID endows EP/MeTHPA with good flame retardancy. When the dosage is only 19.2 wt.%, the limiting oxygen index (LOI) of EP/BID/MeTHPA increases by 77% to 36% (P content: 1.5 wt.%) compared with EP and reaches the vertical combustion (UL‐94) V‐0 rating. Cone calorimetry (CC) results reveal that PHRR and THR drop by 40% and 31%. The pyrolytic process and char residue data analysis show that BID plays flame‐retardant role in gas phase and condensed phase. In addition, impact and flexural and tensile strength improve by 84%, 19% and 54% individually, proving that BID holds a potential on enhancing mechanical performance of EP/MeTHPA.https://doi.org/10.1002/mame.202200550anhydrideepoxy resinflame retardancyoligomerstoughening |
spellingShingle | Huijuan Zhao Huajun Duan Junjun Zhang Lu Chen Chao Wan Chenhao Zhang Chentao Liu Huiru Ma An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness Macromolecular Materials and Engineering anhydride epoxy resin flame retardancy oligomers toughening |
title | An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness |
title_full | An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness |
title_fullStr | An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness |
title_full_unstemmed | An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness |
title_short | An Itaconic Acid‐Based Phosphorus‐Containing Oligomer Endowing Epoxy Resins with Good Flame Retardancy and Toughness |
title_sort | itaconic acid based phosphorus containing oligomer endowing epoxy resins with good flame retardancy and toughness |
topic | anhydride epoxy resin flame retardancy oligomers toughening |
url | https://doi.org/10.1002/mame.202200550 |
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