Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (06): 182-188.doi: 10.13475/j.fzxb.20190202007

• Academic Salon Column for New Insight of Textile Science and Technology: Technology on Textiles for Safety and Protection • Previous Articles    

Preparation and properties of spherical activated carbon-based composite fabric for permeable chemical protective clothing

LIU Qixia1,2(), ZHOU Yiru1, YANG Zhilian1, WANG Mei1, JI Tao1,2   

  1. 1. School of Textiles and Clothing, Nantong University, Nantong, Jiangsu 226019, China
    2. National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, Nantong University, Nantong, Jiangsu 226019, China
  • Received:2019-02-16 Revised:2019-03-12 Online:2019-06-15 Published:2019-06-25

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Abstract:

In order to prepare permeable chemical protective clothing fabric with excellent protection performance and physiological comfort performance, based on structural optimization design, a series of intermediate adsorption layer materials were prepared by using four different spherical activated carbons (SACs) as core adsorption materials by point-adhesive composite technology. The structure and properties of the materials were studied by means of scanning electron microscope observation, specific surface area and pore structure analysis, etc. The results show that the chemical protective mechanism of the developed SAC-based chemical protective clothing fabric is oil repellence and adsorption. By overall consideration of multiple indicators such as cost, gas permeability, adhesion fastness, chemical protective performance, permeable chemical protective clothing composite fabric prepared using domestic pitch-based medium sphere SAC2 as adsorbent show optimal performance. The surface density and the air permeability of its corresponding adsorption layer material are 386.6 g/m2 and 1 086.57 mm/s, respectively. Moreover, the SAC spheres are firmly adhered to the base cloth with a washout ratio of 0.87% and its adsorption capacity retention ratio reaches 90.3%. The liquid-gas protection time is over 48 h and the gas-gas protection time is 230 min.

Key words: permeable chemical protective clothing, spherical activated carbon, adsorption layer material, chemical protective performance, chemical protective mechanism

CLC Number: 

  • TJ92

Tab.1

Specifications of different spherical activated carbons"

试样编号 类型 产地 平均直径/mm
SAC1 沥青基小球 日本东京 0.34
SAC2 沥青基中球 中国上海 0.48
SAC3 聚合物基中球 中国山西 0.52
SAC4 聚合物基大球 中国山西 0.94

Fig.1

Schematic diagram of structure of permeable chemical protective clothing composite fabric"

Fig.2

N2 adsorption-desorption isotherms and pore size distribution curves of different SACs"

Tab.2

Specific surface area and pore structure parameters of different SACs fabrics"

试样
编号		 比表面积SBET/
(m2·g-1)		 总孔容Vp/
(cm3·g-1)		 平均孔径D/
nm		 DFT全孔径分析
微孔率/% 中孔率/% 大孔率/%
SAC1 1 164.28 0.64 2.20 89.18 10.31 0.51
SAC2 1 054.25 0.56 2.12 94.30 4.60 1.10
SAC3 1 034.81 0.91 3.52 51.57 27.66 20.77
SAC4 872.90 0.82 3.76 51.79 32.15 16.06

Fig.3

Side SEM images of adsorption layer materials of different SAC-based chemical protective clothing"

Fig.4

Benzene adsorption capacities of different SACs before and after combination"

Fig.5

Air permeability and surface density of adsorption layer materials of different SAC-based chemical protective clothing"

Fig.6

Sphere washout ratio of adsorbent layer materials of different SAC-based chemical protective clothing"

Tab.3

"Liquid-gas" and "gas-gas" protection time of adsorption materials of different SAC-based chemical protective clothing"

所用球炭 “液-气”防毒
时间/ h		 “气-气”防毒
时间/ min
SAC1 >48 205
SAC2 >48 230
SAC3 >48 143
SAC4 >48 163
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pmid: 16956720
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