Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane

Abstract Polycarbosilane (PCS) was used for surface modification of magnesium hydroxide (MNH) to enhance the flame retardant effectiveness by forming cohesive binding between MgO particles with ceramic adhesive. Chemical interaction and ceramic reaction were revealed between PCS and MNH, which made...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chunfeng Wang, Yongliang Wang, Zhidong Han
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Flame Retardants Polycarbosilane (PCS) Ceramic Reactor Ceramic Char Limiting Oxygen Index (LOI) Medicine R Science Q
Acceso en línea:	https://doaj.org/article/17388431fae0434a8e999c1bfb5f8201
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:17388431fae0434a8e999c1bfb5f8201
record_format	dspace
spelling	oai:doaj.org-article:17388431fae0434a8e999c1bfb5f82012021-12-02T15:08:27ZEnhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane10.1038/s41598-018-32812-52045-2322https://doaj.org/article/17388431fae0434a8e999c1bfb5f82012018-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-32812-5https://doaj.org/toc/2045-2322Abstract Polycarbosilane (PCS) was used for surface modification of magnesium hydroxide (MNH) to enhance the flame retardant effectiveness by forming cohesive binding between MgO particles with ceramic adhesive. Chemical interaction and ceramic reaction were revealed between PCS and MNH, which made for a compact, thermal stable and ceramic-like barrier during the combustion of polyethylene (PE). The flame retardancy of PE/MNH/PCS composites was greatly enhanced and a limiting oxygen index (LOI) of 35.0 was achieved at the PCS/MNH ratio of 4/26 in the composite with 30 wt.% PCS modified MNH. Such results were superior in terms of high LOI value at low global content of MNH. Thanks to the better shielding effect of the integrated and self-supporting ceramic char, the peak heat release rate (p-HRR) and the total heat release (THR) of PE/MNH/PCS composites with 50 wt.% PCS modified MNH were remarkably decreased by 36% and 25% in comparison with PE/MNH with 50 wt.% MNH, respectively. The ceramic reaction between PCS and MNH, the superior thermal stability due to crosslinked PCS and the good barrier function of cohesive ceramic layer play important roles in the effective flame retardant mechanism.Chunfeng WangYongliang WangZhidong HanNature PortfolioarticleFlame RetardantsPolycarbosilane (PCS)Ceramic ReactorCeramic CharLimiting Oxygen Index (LOI)MedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Flame Retardants Polycarbosilane (PCS) Ceramic Reactor Ceramic Char Limiting Oxygen Index (LOI) Medicine R Science Q
spellingShingle	Flame Retardants Polycarbosilane (PCS) Ceramic Reactor Ceramic Char Limiting Oxygen Index (LOI) Medicine R Science Q Chunfeng Wang Yongliang Wang Zhidong Han Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
description	Abstract Polycarbosilane (PCS) was used for surface modification of magnesium hydroxide (MNH) to enhance the flame retardant effectiveness by forming cohesive binding between MgO particles with ceramic adhesive. Chemical interaction and ceramic reaction were revealed between PCS and MNH, which made for a compact, thermal stable and ceramic-like barrier during the combustion of polyethylene (PE). The flame retardancy of PE/MNH/PCS composites was greatly enhanced and a limiting oxygen index (LOI) of 35.0 was achieved at the PCS/MNH ratio of 4/26 in the composite with 30 wt.% PCS modified MNH. Such results were superior in terms of high LOI value at low global content of MNH. Thanks to the better shielding effect of the integrated and self-supporting ceramic char, the peak heat release rate (p-HRR) and the total heat release (THR) of PE/MNH/PCS composites with 50 wt.% PCS modified MNH were remarkably decreased by 36% and 25% in comparison with PE/MNH with 50 wt.% MNH, respectively. The ceramic reaction between PCS and MNH, the superior thermal stability due to crosslinked PCS and the good barrier function of cohesive ceramic layer play important roles in the effective flame retardant mechanism.
format	article
author	Chunfeng Wang Yongliang Wang Zhidong Han
author_facet	Chunfeng Wang Yongliang Wang Zhidong Han
author_sort	Chunfeng Wang
title	Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
title_short	Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
title_full	Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
title_fullStr	Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
title_full_unstemmed	Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
title_sort	enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/17388431fae0434a8e999c1bfb5f8201
work_keys_str_mv	AT chunfengwang enhancedflameretardancyofpolyethylenemagnesiumhydroxidewithpolycarbosilane AT yongliangwang enhancedflameretardancyofpolyethylenemagnesiumhydroxidewithpolycarbosilane AT zhidonghan enhancedflameretardancyofpolyethylenemagnesiumhydroxidewithpolycarbosilane
_version_	1718388107242373120

Enhanced flame retardancy of polyethylene/magnesium hydroxide with polycarbosilane

Ejemplares similares