Synergetic Flame Retardant Effect of Graphene Oxide and Si-P Oligomer in Epoxy

Chun-xia Zhao; Li-min Deng; Zhi-yu Huang

doi:10.11777/j.issn1000-3304.2015.14302

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Synergetic Flame Retardant Effect of Graphene Oxide and Si-P Oligomer in Epoxy

Research Article | 更新时间：2021-03-19

- Synergetic Flame Retardant Effect of Graphene Oxide and Si-P Oligomer in Epoxy
- Acta Polymerica Sinica Issue 4, Pages: 382-389(2015)
- 作者机构：
  
  1. 西南石油大学材料科学与工程学院,成都,610500
  2. 西南石油大学化学化工学院,成都,610500
  3. 四川省安全科学技术研究院,成都,610045
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2015.14302
  CLC：
- Published：20 April 2015，
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Chun-xia Zhao, Li-min Deng, Zhi-yu Huang. Synergetic Flame Retardant Effect of Graphene Oxide and Si-P Oligomer in Epoxy. [J]. Acta Polymerica Sinica (4):382-389(2015)
DOI：

Chun-xia Zhao, Li-min Deng, Zhi-yu Huang. Synergetic Flame Retardant Effect of Graphene Oxide and Si-P Oligomer in Epoxy. [J]. Acta Polymerica Sinica (4):382-389(2015) DOI： 10.11777/j.issn1000-3304.2015.14302.

摘要

采用Hummers方法制备了氧化石墨烯(GO)

并通过扫描电镜(SEM)和原子力显微镜(AFM)对GO微观形貌进行了表征.详细研究了GO与硅磷低聚物(DMS-DOPO)在环氧树脂(EP)力学性能和阻燃性能中的协同作用.万能材料试验测试结果表明

GO和DMS-DOPO分别对拉伸强度和断裂伸长率提高效果明显

二者协同后

可使EP拉伸强度和断裂伸长率分别提高17.1%和42.2%.采用热重分析(TG)、极限氧指数(LOI)、垂直燃烧(UL-94)、锥型量热(CONE)和SEM对EP及其阻燃材料的热性能、燃烧性能以及炭层微观形貌进行了表征.EP/DMS-DOPO/GO在600 ℃残留量为EP的5.2倍

比EP/DMS-DOPO和EP/GO分别提高4.4%和208.6%.EP/DMS-DOPO/GO的LOI值大于30

并能通过UL-94 V-0级别

燃烧过程中可形成内部结构疏松多孔、外表面致密的膨胀炭层.DMS-DOPO和GO协同后使EP热释放速率峰值由1154 kW m-2降低到710 kW m-2

总烟释放量降低30%.

Abstract

Graphene oxide (GO) was prepared via Hummers' method

and its micromorphology was detected by scanning electron microscopy (SEM) and atomic force microscopy (AFM).The synergetic effects of GO and Si-P oligomer (DMS-DOPO) on flame retardant and mechanical properties of EP were studied in detail.Universal testing results showed that GO and DMS-DOPO had good effect on tensile strength and elongation at break

respectively.Tensile strength and elongation at break of EP were enhanced by 17.1% and 42.2% synergistically effected by GO and DMS-DOPO.Thermal and flame properties of EP and its composites were measured through thermal gravimetric analysis (TG)

limiting oxygen index (LOI)

vertical burning test (UL-94) and cone calorimeter (CONE).The micromorphology of char residual was observed by SEM.The char residual amount of EP/DMS-DOPO/GO was 5.2 times that of EP at 600 ℃

and 4.4% higher than that of EP/DMS-DOPO

208% for EP/GO.EP/DMS-DOPO/GO could pass UL-94 V-0 level

and its LOI value was over 30.Intumescent char layer with polyphorous inner structure and compact outside surface was formed during the combustion of EP/DMS-DOPO/GO.The heat release rate (HRR) of EP reduced from 1154 kW m-2 to 710 kW m-2 due to synergistical flame retard and effect of DMS-DOPO and GO.Total smoke production (TSP) of EP/DMS-DOPO/GO was 30% lower than that of EP.

关键词

氧化石墨烯协同阻燃环氧树脂锥型量热

Keywords

Graphene oxideSynergetic flame retardant effectEpoxyCone calorimeter

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Related Institution

Key Laboratory of Advanced Materials, Department of Chemical Engineering, Tsinghua University

Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemisty, Nankai University

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Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, Chinese Academy of Sciences

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