Synergistic properties of microencapsulated intumescent flame retardant-organically modified montmorillonite/ethylene-vinyl acetate copolymer composites

LI Zhuoshi; CHENG Wenhua; DONG Chun; WANG Bibo; JIN Zhijian; FANG Quansheng; HU Yuan

doi:10.13801/j.cnki.fhclxb.20201105.002

Volume 38 Issue 8

Aug. 2021

Turn off MathJax

Article Contents

Article Navigation > Acta Materiae Compositae Sinica > 2021 > 38(8): 2546-2553

LI Zhuoshi, CHENG Wenhua, DONG Chun, et al. Synergistic properties of microencapsulated intumescent flame retardant-organically modified montmorillonite/ethylene-vinyl acetate copolymer composites[J]. Acta Materiae Compositae Sinica, 2021, 38(8): 2546-2553. doi: 10.13801/j.cnki.fhclxb.20201105.002

Citation:

LI Zhuoshi, CHENG Wenhua, DONG Chun, et al. Synergistic properties of microencapsulated intumescent flame retardant-organically modified montmorillonite/ethylene-vinyl acetate copolymer composites[J]. Acta Materiae Compositae Sinica, 2021, 38(8): 2546-2553. doi: 10.13801/j.cnki.fhclxb.20201105.002

Citation:

LI Zhuoshi, CHENG Wenhua, DONG Chun, et al. Synergistic properties of microencapsulated intumescent flame retardant-organically modified montmorillonite/ethylene-vinyl acetate copolymer composites[J]. Acta Materiae Compositae Sinica, 2021, 38(8): 2546-2553. doi: 10.13801/j.cnki.fhclxb.20201105.002

PDF( 4069 KB)

Synergistic properties of microencapsulated intumescent flame retardant-organically modified montmorillonite/ethylene-vinyl acetate copolymer composites

doi: 10.13801/j.cnki.fhclxb.20201105.002

LI Zhuoshi^1
,,
CHENG Wenhua^2
,,
DONG Chun^1
,,
WANG Bibo^2
,,
JIN Zhijian¹,
FANG Quansheng^1
,,
HU Yuan^{2
,
,}

1.
Baosheng Science & Technology Co. Ltd., Yangzhou 225800, China
2.
State Key Laboratory of Science and Fire, University of Science and Technology of China, Hefei 230026, China

Received Date: 2020-08-31
Accepted Date: 2020-10-16

Available Online: 2020-11-06

Publish Date: 2021-08-15

Abstract

Abstract

Flame retardant ethylene-vinyl acetate (EVA) composites were prepared by combination of microencapsulated intumescent flame retardants-ammonium polyphosphate (APP)-pentaerythritol (PER) and organically modified montmorillonite (OMMT). The microencapsulated APP (MCAPP)-microencapsulated PER (MCPER)-OMMT/EVA composites were further characterized through XRD and TEM, confirming OMMT sheets are well dispersed in the matrix as exfoliated or intercalated nanocomposite state. Limiting oxygen index (LOI), TGA, underwriters laboratories 94 vertical burning (UL-94), cone and smoke density test results indicate the synergistic flame retardancy effect between MCAPP-MCPER and OMMT in MCAPP-MCPER-OMMT/EVA composites. Replacing the same amount of MCAPP-MCPER with 3wt% OMMT could improve the LOI value of the MCAPP-MCPER-OMMT/EVA composites from 25.5vol% to 29.5vol%. The UL-94 rating increases from V-2 to V-0. The char residue of MCAPP-MCPER-OMMT/EVA composites is improved from 14.5wt% to 15.9wt% and the smoke density significantly decreases from 154.7 g/s to 97.5 g/s. Besides, the mechanical property of MCAPP-MCPER-OMMT/EVA composites was tested by universal testing machine and dynamic thermomechanical analysis (DMA), the result shows that the flame-retardant MCAPP-MCPER-OMMT/EVA composites has better mechanical properties.
- ethylene-vinyl acetate,
- flame retardant,
- nanocomposite,
- synergistic effect,
- intumescent flame retardant
Long Abstrsct
Innovation Points

FullText(HTML)

References(30)

References

[1]	XIAO N Y, ZHANG X Q, MA X Y, et al. Construction of EVA/chitosan based PEG-PCL micelles nanocomposite films with controlled release of iprodione and its application in pre-harvest treatment of grapes[J]. Food Chemistry,2020,331:127-277.
[2]	CHAI F, WANG G, LIU F, et al. Preparation and properties of flame-retardant neutron shielding material based on EVA polymer reinforced by radiation modification[J]. Radiation Physics and Chemistry,2020,174:108984.
[3]	陈志杰, 郑玉婴, 张延兵, 等. 无卤阻燃乙烯-醋酸乙烯酯共聚物泡沫复合材料的制备及性能表征[J]. 复合材料学报, 2015, 32(3):649-656. CHEN Zhijie, ZHENG Yuying, ZHANG Yanbing, et al. Preparation and property characterization of halogen-free fire retardant ethylene-vinyl acetate copolymer foam compo-sites[J]. Acta Materiae Compositae Sinica,2015,32(3):649-656(in Chinese).
[4]	刘继纯, 李行, 贺云鹏, 等. 纳米Mg(OH)₂微胶囊红磷/乙烯-乙酸乙烯酯共聚物阻燃复合材料的性能[J]. 复合材料学报, 2019, 36(11):2530-2540. LIU Jichun, LI Xing, HE Yunpeng, et al. Properties of nano Mg(OH)₂-microencapsulated red phosphorus/ethylene-vinyl acetate copolymer flame-retardant composites[J]. Acta Materiae Compositae Sinica,2019,36(11):2530-2540(in Chinese).
[5]	WANG X, BI B, LIU J, et al. Halogen-free intumescent flame-retardant ethylene-vinyl acetate copolymer system based on organic montmorillonite and graphene nanosheets[J]. Journal of Applied Polymer Science,2018,135(23):46361.
[6]	XIE F, WANG Y Z. A novel intumescent flame-retardant polyete system[J]. Macromolecular Materials and Enginneering,2006,291(3):247-253. doi: 10.1002/mame.200500356
[7]	XU Z, CHU Z, YAN L, et al. Effect of chicken eggshell on the flame-retardant and smoke suppression properties of an epoxy-based traditional APP-PER-MEL system[J]. Polymer Composites,2019,40(7):2712-2723. doi: 10.1002/pc.25077
[8]	WANG B, SHENG H, SHI Y, et al. Recent advances for microencapsulation of flame retardant[J]. Polymer Degradation and Stability,2015,113:96-109. doi: 10.1016/j.polymdegradstab.2015.01.008
[9]	WANG Q, LI W, ZHANG L, et al. Enhanced flame retardancy and mechanical properties of intumescent flame-retardant polypropylene with triazine derivative-modified nano-SiO₂[J]. Polymer Science Series B,2020,62(3):306-318.
[10]	CHEN B, GAO W, SHEN J, et al. The multilayered distribution of intumescent flame retardants and its influence on the fire and mechanical properties of polypropylene[J]. Composites Science and Technology,2014,93:54-60. doi: 10.1016/j.compscitech.2013.12.022
[11]	LI X L, ZHANG F H, JIAN R K, et al. Influence of eco-friendly calcium gluconate on the intumescent flame-retardant epoxy resin: Flame retardancy, smoke suppression and mechanical properties[J]. Composites Part B: Engineering,2019,176:107200. doi: 10.1016/j.compositesb.2019.107200
[12]	CHEN J, WANG J, CHEN H, et al. Synergistic effect of intumescent flame retardant and attapulgite on mechanical properties and flame retardancy of glass fibre reinforced polyethylene composites[J]. Composite Structures,2020:246.
[13]	ZHENG Z, LIU Y, DAI B, et al. Synergistic effect of organically modified zinc aluminum layered double hydroxide in intumescent flame-retarding polypropylene composites containing melamine phytate and dipentaerythritol[J]. Polymer Engineering and Science,2019,59:2301-2312. doi: 10.1002/pen.25233
[14]	QIAN W, LIA X Z, ZHOU J, et al. High synergistic effects of natural-based tea saponin in intumescent flameretardant coatings for enhancement of flame retardancy and pyrolysis performance[J]. Progress in Organic Coatings,2019,127:408-418. doi: 10.1016/j.porgcoat.2018.10.031
[15]	LAI X J, ZENG X G, LI H Q, et al. Synergistic effect of phosphorus-containing nanosponges on intumescent flame-retardant polypropylene[J]. Journal of Applied Polymer Science,2012,125:1758-1765. doi: 10.1002/app.35646
[16]	程博, 李定华, 吴凡, 等. 不同蒙脱土Al(OH)₃/乙烯-醋酸乙烯酯复合材料力学性能和阻燃性能的影响[J]. 复合材料学报, 2017, 34(12):2715-2721. CHENG Bo, LI Dinghua, WU Fan, et al. Effect of montmorillonite type on mechanical and flame retarded properties of Al(OH)₃/ethylene vinyl acetate copolymer composites[J]. Acta Materiae Compositae Sinica,2017,34(12):2715-2721(in Chinese).
[17]	TANG Q B, WANG B B, TANG G, et al. Preparation of microcapsulated ammonium polyphosphate, pentaerythritol with glycidyl methacrylate, butyl methacrylate and their synergistic flame- retardancy for ethylene vinyl acetate copolymer[J]. Polymers for Advanced Technologies,2014,25:73-82. doi: 10.1002/pat.3207
[18]	中国国家标准化管理委员会. 塑料燃烧性能的测定水平法和垂直法: GB/T 2408—2008[S]. 北京: 中国标准出版社, 2009. Standardization Administration of the People’s Republic ofChina. Plastics: Determination of burning characteristics: Horizontal and vertical test: GB/T 2408—2008[S]. Beijing: China Standards Press, 2009(in Chinese).
[19]	American Society for Testing Material International. Standard test method for measuring the minimum oxygen concentration to support candle-like combustion of plastics (oxygen index): ASTM D2863−19[S]. West Conshohocken: ASTM International, 2019.
[20]	International Organization for Standardization. Reaction-to-fire tests-Heat release, smoke production and mass loss rate-Part 5: Heat release rate (cone calorimeter method) and smoke production rate (dynamic measurement) under reduced oxygen atmospheres: ISO/TS 5660-5:2020[S]. West Conshohocken: ASTM International, 2020.
[21]	International Organization for Standardization. Controlled equivalence ratio method for the determination of hazardous components of fire effluents-Steady-state tube furnace: ISO/TS 19700:2016[S]. West Conshohocken: ASTM International, 2016.
[22]	吴发盛. 金属氧化物/蒙脱土对膨胀型阻燃聚丙烯复合物性能的研究[D]. 上海: 上海交通大学, 2009. WU Fasheng. Study on synergistic effects of metal oxides/organic-modified montmorillonite in an intumescent flame retardant polypropylene system[d]. Shanghai: Shanghai Jiao Tong University, 2009(in Chinese).
[23]	JENNY A, MERIMA P, ALBERTO F. Novel flame retardants containing cylodextrin nanosponges and phosphorus compounds to enhance EVA combustion properties[J]. Polymer Degradation Stability,2010,95:2093-2100. doi: 10.1016/j.polymdegradstab.2010.06.030
[24]	PALACIOS J, PERERA R, ROSALES C, et al. Thermal degradation kinetics of PP/OMMT nanocomposites with mPE and EVA[J]. Polymer Degradation and Stability,2012,97(5):729-737. doi: 10.1016/j.polymdegradstab.2012.02.009
[25]	CHEN X, LIU L, ZHUO J, et al. Influence of organic-modified iron-montmorillonite on smoke-suppression properties and combustion behavior of intumescent flame-retardant epoxy composites[J]. High Performance Polymers,2015,27(2):233-246. doi: 10.1177/0954008314544341
[26]	FU M Z, QU B J. Synergistic flame retardant mechanism of fumed silica in ethylene-vinylacetate/magnesium hydroxide blends[J]. Polymer Degradation Stability,2004,85(1):633-639. doi: 10.1016/j.polymdegradstab.2004.03.002
[27]	DUTTA S K, BHOWMICK A K, MUKUNDA P G. Thermal degradation studies of electron beam cured ethylene-vinyl acetate copolymer[J]. Polymer Degradation Stability,1995,50(1):75-82. doi: 10.1016/0141-3910(95)00125-6
[28]	RAFIEE F, OTADI M, GOODARZI V, et al. Thermal and dynamic mechanical properties of PP/EVA nanocomposites containing organo-modified layered double hydroxides[J]. Composites Part B: Engineering,2016,103:122-130. doi: 10.1016/j.compositesb.2016.08.013
[29]	STARK W, JAUNICH M. Investigation of ethylene/vinyl acetate copolymer (EVA) by thermal analysis DSC and DMA[J]. Polymer Testing,2011,30(2):236-242. doi: 10.1016/j.polymertesting.2010.12.003
[30]	WANG B B, ZHOU K Q, WANG L, et al. Enhancement on physical properties of flame retarded ethylene-vinyl acetate copolymer/ferric pyrophosphate composites through electron beam irradiation[J]. Composites Part B: Engineering,2012,43:641-646. doi: 10.1016/j.compositesb.2011.08.027