Cargando…

LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin

As a promising nanofiller, layered double hydroxides (LDHs) can advance the fire safety of epoxy resin (EP), but so far, due to the problems of dispersion and low efficiency, it has still been a challenge to incorporate the flame retardancy and mechanical properties of EP nanocomposites effectively...

Descripción completa

Detalles Bibliográficos
Autores principales: Chi, Cheng, He, Siyuan, Peng, Chaohua, Zeng, Birong, Xia, Long, Miao, Zhongxi, Xu, Hui, Wang, Shuchuan, Chen, Guorong, Dai, Lizong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10181304/
https://www.ncbi.nlm.nih.gov/pubmed/37177344
http://dx.doi.org/10.3390/polym15092198
_version_ 1785041542464929792
author Chi, Cheng
He, Siyuan
Peng, Chaohua
Zeng, Birong
Xia, Long
Miao, Zhongxi
Xu, Hui
Wang, Shuchuan
Chen, Guorong
Dai, Lizong
author_facet Chi, Cheng
He, Siyuan
Peng, Chaohua
Zeng, Birong
Xia, Long
Miao, Zhongxi
Xu, Hui
Wang, Shuchuan
Chen, Guorong
Dai, Lizong
author_sort Chi, Cheng
collection PubMed
description As a promising nanofiller, layered double hydroxides (LDHs) can advance the fire safety of epoxy resin (EP), but so far, due to the problems of dispersion and low efficiency, it has still been a challenge to incorporate the flame retardancy and mechanical properties of EP nanocomposites effectively under the circumstance of a low additive amount. In this work, we take LDHs as the template, via the adsorption of a catechol group and the condensation polymerization between catechol groups and phenylboric acid groups, to prepare a core–shell structured nanoparticle LDH@BP, which contains rich flame-retardant elements. EP/LDH@BP nanocomposites were prepared by introducing LDH@BP into EP. The experimental results indicate that, compared with the original LDH, LDH@BP disperses uniformly in the EP matrix, and the flame retardancy and mechanical properties of EP/LDH@BP are significantly improved. At a relatively low content (5 wt%), EP/LDH@BP reached the rating of V-0 in the UL-94 test, LOI was increased to 29.1%, and peak heat release rate (PHRR) was reduced by 35.9% in cone calorimeter tests, which effectively inhibited the release of heat and toxic smoke during the combustion process of EP. Simultaneously, the mechanical properties of EP/LDH@BP have been improved satisfactorily. The above results derive from the reasonable architectural design of organic–inorganic nano-hybrid flame retardants and provide a novel method for the construction of efficient and balanced EP nanocomposite system with LDHs.
format Online
Article
Text
id pubmed-10181304
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-101813042023-05-13 LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin Chi, Cheng He, Siyuan Peng, Chaohua Zeng, Birong Xia, Long Miao, Zhongxi Xu, Hui Wang, Shuchuan Chen, Guorong Dai, Lizong Polymers (Basel) Article As a promising nanofiller, layered double hydroxides (LDHs) can advance the fire safety of epoxy resin (EP), but so far, due to the problems of dispersion and low efficiency, it has still been a challenge to incorporate the flame retardancy and mechanical properties of EP nanocomposites effectively under the circumstance of a low additive amount. In this work, we take LDHs as the template, via the adsorption of a catechol group and the condensation polymerization between catechol groups and phenylboric acid groups, to prepare a core–shell structured nanoparticle LDH@BP, which contains rich flame-retardant elements. EP/LDH@BP nanocomposites were prepared by introducing LDH@BP into EP. The experimental results indicate that, compared with the original LDH, LDH@BP disperses uniformly in the EP matrix, and the flame retardancy and mechanical properties of EP/LDH@BP are significantly improved. At a relatively low content (5 wt%), EP/LDH@BP reached the rating of V-0 in the UL-94 test, LOI was increased to 29.1%, and peak heat release rate (PHRR) was reduced by 35.9% in cone calorimeter tests, which effectively inhibited the release of heat and toxic smoke during the combustion process of EP. Simultaneously, the mechanical properties of EP/LDH@BP have been improved satisfactorily. The above results derive from the reasonable architectural design of organic–inorganic nano-hybrid flame retardants and provide a novel method for the construction of efficient and balanced EP nanocomposite system with LDHs. MDPI 2023-05-05 /pmc/articles/PMC10181304/ /pubmed/37177344 http://dx.doi.org/10.3390/polym15092198 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chi, Cheng
He, Siyuan
Peng, Chaohua
Zeng, Birong
Xia, Long
Miao, Zhongxi
Xu, Hui
Wang, Shuchuan
Chen, Guorong
Dai, Lizong
LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin
title LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin
title_full LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin
title_fullStr LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin
title_full_unstemmed LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin
title_short LDH@Boronate Polymer Core–Shell Nanoparticles: Nanostructure Design for Synergistically Enhancing the Flame Retardancy of Epoxy Resin
title_sort ldh@boronate polymer core–shell nanoparticles: nanostructure design for synergistically enhancing the flame retardancy of epoxy resin
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10181304/
https://www.ncbi.nlm.nih.gov/pubmed/37177344
http://dx.doi.org/10.3390/polym15092198
work_keys_str_mv AT chicheng ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT hesiyuan ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT pengchaohua ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT zengbirong ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT xialong ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT miaozhongxi ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT xuhui ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT wangshuchuan ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT chenguorong ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin
AT dailizong ldhboronatepolymercoreshellnanoparticlesnanostructuredesignforsynergisticallyenhancingtheflameretardancyofepoxyresin