Preparation and Properties of Superhydrophobic and Flame-Retardant Cotton Fabric

doi:10.11944/j.issn.1000-0518.2020.03.190225

Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (3): 301-306.DOI: 10.11944/j.issn.1000-0518.2020.03.190225

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Preparation and Properties of Superhydrophobic and Flame-Retardant Cotton Fabric

JI Wanli^a^b^*(),ZHONG Shaofeng^a,YU Xueman^a

^a Department of Jianhu, Zhejiang Industry Polytechnic College,Shaoxing,Zhejiang 31200,China
^b School of Light Industrial and Engineering,Shaanxi University of Science & Technology,Xi'an 710021,China

Received:2019-08-12 Accepted:2019-11-19 Published:2020-03-01 Online:2020-03-10
Contact: JI Wanli
Supported by:
Supported by Zhejiang Industrial Polytechnic College Project (No. 20170283), Shaoxing Key Innovation Team(No.222709010920717004), and Shaanxi University of Science and Technology(No.BJ08?18)

Abstract

Abstract:

Magnesium hydroxide (Mg(OH)₂) was incorporated into cotton fiber to build surface roughness and improve flame-retardancy of cotton fabric. Subsequently, flame-retardant and superhydrophobic cotton fabric was prepared by further dip-coating of cotton fabric with polydimethylsiloxane (PDMS) solution. Fourier transform infrared spectrometer (FTIR) and scanning electronic microscopy (SEM) analysis confirmed that the pristine cotton fabrics is successfully modified by Mg(OH)₂ and PDMS. The hydrophobicity, thermal stability, flame retardant and durability of the treated cotton fibers were tested. The results indicated that Mg(OH)₂ is loaded on the fabric, which makes the surface of the pristine cotton to have a certain micro-nano structure and forms a rough coating. When the concentration of Mg(OH)₂ was 1.0 mol/L, Mg(OH)₂/PDMS coated fabric had contact angle (CA) of 158°, the limit oxygen index(LOI) of 24.5%, and the thermal conductivity of 0.0305 W/(m·K), suggesting excellent superhydrophobicity and flame-retardant performance. After 20 times of washing, 100 times of friction and under extreme processing conditions for coated fabric, its CA was greater than 150°, its LOI value was higher than 23%, revealing that the coated fabric has an excellent durability.

Key words: magnesium hydroxide, fabric coating, hydrophobicity, flame retardant property, cotton fabric

JI Wanli, ZHONG Shaofeng, YU Xueman. Preparation and Properties of Superhydrophobic and Flame-Retardant Cotton Fabric[J]. Chinese Journal of Applied Chemistry, 2020, 37(3): 301-306.

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Preparation and Properties of Superhydrophobic and Flame-Retardant Cotton Fabric

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