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Polymers 2016, 8(9), 327; doi:10.3390/polym8090327

Heat Release Property and Fire Performance of the Nomex/Cotton Blend Fabric Treated with a Nonformaldehyde Organophosphorus System

1
Department of Textiles, Merchandising and Interiors, the University of Georgia, Athens, GA 30602, USA
2
College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 201620, China
*
Author to whom correspondence should be addressed.
Academic Editor: Baljinder Kandola
Received: 18 June 2016 / Revised: 7 August 2016 / Accepted: 24 August 2016 / Published: 2 September 2016
(This article belongs to the Special Issue Recent Advances in Flame Retardancy of Textile Related Products)
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Abstract

Blending Nomex® with cotton improves its affordability and serviceability. Because cotton is a highly flammable fiber, Nomex®/cotton blend fabrics containing more than 20% cotton require flame-retardant treatment. In this research, combination of a hydroxyl functional organophosphorus oligmer (HFPO) and 1,2,3,4-butanetetracarboxylic acid (BTCA) was used for flame retardant finishing of the 65/35 Nomex®/cotton blend woven fabric. The system contains HFPO as a flame retardant, BTCA as a bonding agent, and triethenolamine (TEA) as a reactive additive used to enhance the performance of HFPO/BTCA. Addition of TEA improves the hydrolysis resistance of the HFPO/BTCA crosslinked polymeric network on the blend fabric. Additionally, TEA enhances HFPO’s flame retardant performance by reducing formation of calcium salts and also by providing synergistic nitrogen to the treated blend fabric. The Nomex®/cotton blend fabric treated with the HFPO/BTCA/TEA system shows high flame resistance and high laundering durability at a relatively low HFPO concentration of 8% (w/w). The heat release properties of the treated Nomex®/cotton blend fabric were measured using microscale combustion calorimetry. The functions of BTCA; HFPO and TEA on the Nomex®/cotton blend fabric were elucidated based on the heat release properties, char formation, and fire performance of the treated blend fabric. View Full-Text
Keywords: cotton; Nomex®; Nomex®/cotton blend fabrics; flame retardant finishing; flame retardant textiles; fire-resistant protective clothing cotton; Nomex®; Nomex®/cotton blend fabrics; flame retardant finishing; flame retardant textiles; fire-resistant protective clothing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yang, C.Q.; Chen, Q. Heat Release Property and Fire Performance of the Nomex/Cotton Blend Fabric Treated with a Nonformaldehyde Organophosphorus System. Polymers 2016, 8, 327.

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