The chemical bonding and fire performance of the nylon/cotton blend fabrics treated with a hydroxy-functional organophosphorus oligomer

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• 作者：Qin Chen^a ; ^b ; Charles Q. Yang^a ; ^{cyang@uga.edu" class="auth_mail" title="E-mail the corresponding author} ; Tao Zhao^b
• 关键词：Chemical bonding ; Cotton ; Cotton/nylon blends ; Crosslinked polymeric networks ; Flame retardant finishing ; Flame retarded textiles ; Military protective clothing ; Nylon
• 刊名：Polymer Degradation and Stability
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：128
• 期：Complete
• 页码：237-244
• 全文大小：544 K

文摘

Nylon/cotton blend fabrics have long been used in military protective clothing. Because fire risk has drastically increased in recent warfare, developing flame retarded military nylon/cotton fabrics becomes extremely important for protecting military personnel. It was previously discovered that a hydroxy-functional organophosphorus oligomer (HFPO) was bound to a nylon fabric in the presence of dimethyloldihydroxylethyleneurea (DMDHEU) as a bonding agent. In this research, the bonding mechanism of HFPO/DMDHEU on the nylon/cotton blend fabrics was investigated. HFPO was bound to the nylon/cotton blend fabrics by (1) forming HFPO/DMDHEU crosslinked polymeric networks on both nylon and cotton and (2) forming a DMDHEU bridge between cellulose and HFPO on cotton. The relative quantity of the HFPO/DMDHEU crosslinked networks and that of the DMDHEU-bridging formed on the treated blend fabrics was controlled by the HFPO-to-DMDHEU ratio. The HFPO/DMDHEU system was an effective and durable flame retarding treatment system for nylon/cotton military blend fabrics. The treated fabrics passed the fabric vertical burning test after 50 home laundering cycles. The fire performance and hydrolysis-resistance of different nylon/cotton blend fabrics treated with HFPO/DMDHEU was fully evaluated, and the performance data were analyzed in relation with the bonding mechanism.