Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (04): 117-122.doi: 10.13475/j.fzxb.20190302907

• Apparel Engineering • Previous Articles     Next Articles

Thermal protective performance of composite flame retardant fabrics treated by graphene aerogel

GAO Shan1, LU Yehu1,2,3(), ZHANG Desuo1, WU Lei1, WANG Laili2   

  1. 1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215006, China
    2. Clothing Engineering Research Center of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    3. Nantong Textile and Silk Industrial Technology Research Institute, Nantong, Jiangsu 226300, China
  • Received:2019-03-12 Revised:2019-12-30 Online:2020-04-15 Published:2020-04-27
  • Contact: LU Yehu E-mail:yhlu@suda.edu.cn

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Abstract:

To further improve the comprehensive performance of thermal protective clothing and meet the needs of increasing thermal protection with reduced heat storage, a type of graphene aerogel material with low density, low thermal conductivity and good heat insulating property was prepared by the modified Hummers method, and a composite flame retardant fabric system was constructed. The thermal protective performance of graphene aerogel with different thickness was measured in a low radiation condition. The results show that the flame retardant composite fabrics with graphene aerogel block provides better thermal protective performance, with the time required to cause skin damage extending about 203% and the time required to generate skin burn extending about 218%. It is found that the relationship between the thermal protective performance and the graphene aerogel thickness is not linear. The water vapor transfer of the flame retardant composite fabrics with graphene aerogel block is around 10.4 g/(m2·24 h), presenting no significant difference compared to fabrics untreated by graphene aerogel.

Key words: graphene aerogel, flame retardant fabric, thermal protective performance, air layer, modified Hummers method

CLC Number: 

  • TS941.73

Fig.1

Three graphene aerogel samples with different heights. (a)Front view; (b)Back view; (c)Side view"

Tab.1

Basic properties of fabrics"

位置 织物层 成分 组织结构 面密度/(g·m-2) 厚度/mm
外层 防火层 芳纶1313/芳纶1414(98/2) 斜纹 193.7 0.49
中层 防水透气层 芳纶1313基布、聚四氟乙烯膜 层压 108.3 0.70
内层 隔热层 芳纶1313毡和基布 针刺 200.0 0.43

Fig.2

Composition of graphene aerogel composite flame retardant fabric. (a) Combination method;(b) Fix method"

Fig.3

Graphene aerogel after radiation"

Fig.4

SEM images of graphene aerogel before (a) and after (b) radiation(×3 000)"

Fig.5

Temperature curve of sensors at different positions with time of heat exposure"

Tab.2

Thermal protection of aerogel based flame resistant fabrics"

织物
编号		 达到12 ℃
时间/s		 达到24 ℃
时间/s		 达到最高
体感温度
时间/s		 体感最高
温度/℃		 体感最大
温升/℃
0# 10.20 20.40 85.50 129.20 106.00
1# 26.60 58.70 109.60 73.60 47.80
2# 32.70 64.00 115.50 68.50 42.90
3# 28.80 55.60 113.00 77.70 51.80
4# 19.70 46.60 110.10 107.51 72.88
5# 31.40 83.90 143.21 62.12 37.68
6# 27.50 96.40 149.90 58.32 30.45
7# 40.63 79.41 138.02 66.80 32.87
8# 38.96 85.23 125.72 65.35 31.84
9# 41.22 88.24 138.43 64.89 32.02

Tab.3

Evaporation of graphene aerogel and composite fabric system at different storage times"

试样名称 凝胶层厚
度/mm		 蒸发量/g
1 h 2 h 3 h 4 h 5 h 6 h 24 h
石墨烯气凝胶 6 0.083 0.013 0.017 0.018 0.020 0.019 0.345
8 0.011 0.037 0.042 0.025 0.029 0.028 0.450
10 0.036 0.018 0.042 0.025 0.029 0.026 0.448
石墨烯气凝胶
复合防火织物		 6 0.007 0.014 0.018 0.020 0.020 0.022 0.385
8 0.007 0.012 0.017 0.017 0.019 0.026 0.366
10 0.006 0.017 0.025 0.026 0.029 0.031 0.558
空白对照组(0#) 0.010 0.015 0.018 0.019 0.021 0.017 0.342
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