Comparative study of flame retardancy in polyimine vitrimers and composites:Evaluating additive and reactive flame retardants acting via gas-,solid-,and combined-phase mechanisms

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：We developed flame retarded polyimine type vitrimers and carbon fibre reinforced composites using two additive and a reactive flame retardant containing phosphorus:ammonium polyphosphate(APP),resor-cinol bis(diphenyl phosphate)(RDP);and N,N',N"-tris(2-aminoethyl)-phosphoric acid triamide(TEDAP).We characterised the vitrimer matrix materials by differential scanning calorimetry(DSC),thermal anal-ysis(TGA),limiting oxygen index(LOI),UL-94 test and mass loss calorimetry(MLC),while the vitrimer composites by LOI,UL-94 test,MLC and dynamic mechanical analysis(DMA).We compared the perfor-mance of the vitrimer systems to a benchmark pentaerythritol-based aliphatic epoxy resin system(PER).The vitrimer reference had higher thermal stability but lower fire performance than the PER aliphatic reference epoxy.At lower phosphorus content,the vitrimer systems exhibited a melting above their vit-rimer transition temperature,which negatively affected their LOI and UL-94 results.From 2％phosphorus content,rapid charring and extinguishing of vitrimers prevented the softening and deforming.The su-perior performance of these same flame retardants in vitrimer systems could be attributed to the high nitrogen content of imine-based vitrimers in combination with phosphorus flame retardants,exploiting nitrogen-phosphorus synergism.In both matrices,flame retardants with solid phase action lead to better fire performance,while in composites,the lowest peak heat release rates(152 kW/m2 in vitrimer com-posite)were achieved with RDP acting predominantly in the gas phase,as carbon fibres hindered the intumescent phenomenon.

外文关键词：

VitrimerPolyimineEpoxyCarbon fibrePolymer compositeFlame retardancy

作者：

Andrea Toldy、Dániel István Poór、Beáta Szolnoki、Boglárka Devecser、Norbert Geier、Ákos Pomázi

展开 >

作者单位：

Department of Polymer Engineering,Faculty of Mechanical Engineering,Budapest University of Technology and Economics,H-1111 Budapest,Muegyetem rkp.3,Hungary

MTA-BME Lendület Sustainable Polymers Research Group,M(ü)egyetem rkp.3,H-1111 Budapest,Hungary

Budapest University of Technology and Economics,Faculty of Mechanical Engineering,Department of Manufacturing Science and Engineering,M(ü)egyetem rkp.3.,Budapest 1111,Hungary

Department of Organic Chemistry and Technology,Faculty of Chemical Technology and Biotechnology,Budapest University of Technology and Economics,H-1111 Budapest,M(ü)uegyetem rkp.3,Hungary

HUN-REN-BME Research Group for Composite Science and Technology,M(ü)egyetem rkp.3.,H-1111 Budapest,Hungary

展开 >

基金：

Ministry of Culture and Innovation of Hungary from the National Research,Development and Innovation Fundfunding schemeNational Research,Development and Innovation Officescientific and technological cooperation between USA and HungaryNew National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research,Development New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research,Development New National Excellence Program of the Ministry for Culture and Innovation from the source of the National Research,Development János Bolyai Research Scholarship of the Hungarian Academy of sciencesJános Bolyai Research Scholarship of the Hungarian Academy of sciences

项目编号：

TKP-6-6/PALY-2021TKP2021-NVANKFIH K1425172021-1.2.4-TéT-2021-00050úNKP-23-3-Ⅱ-BME-227úNKP-23-5-BME-409úNKP-23-5-BME-417BO/00508/22/6BO/00980/23/7

出版年：

2024

DOI：

10.1016/j.jmst.2024.01.047

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.196(29)