Abstract
A flame retardant aluminum 2-carboxyethyl-phenyl-phosphinate (CPA-Al) was synthesized through the salification reaction. The molecular structure of CPA-Al and thermal stability were characterized by solid nuclear magnetic resonance, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Subsequently, CPA-Al mixed in polyurethane was coated on polyester textile to obtain flame-retardant samples. The addition of 14.7 wt.% CPA-Al in textile sample can bring a limited oxygen index (LOI) value of 24.5%, 0 s after flame time, and the vertical burning B1 rating. Meanwhile, the incorporated CPA-Al reduced the peak heat release rate, total heat release, average effective heat of combustion, and increased the charring capacity of polyester textiles in contrast to the samples without CPA-Al. CPA-Al exerted not only its flame inhibition effect in gas phase, but also the charring and barrier effect in the condensed phase. Besides, with an increasing CPA-Al ratio in polyester textile, the contact angle gradually decreased from 123.6° to 75.6°, indicating that the surficial property of coating from hydrophobic to hydrophilic, thereby increasing the moisture permeability of polyester textile.
Highlights
In the past several decades, polyester textile has been widely applied to garment, upholstery, and decoration, etc. [1,2], because of its excellent properties, such as low cost, being resistant to chemicals, dimensional stability, and good physical features [3,4,5,6,7,8]
Some researchers have been trying several kinds of flame retardants, such as brominated flame retardants [13], phosphorus-containing flame retardant [14,15], intumescent flame retardant [16,17], and nanometer flame retardant [18,19,20] to improve the flame retardancy of polyester textile
1, 4-butylene glycol) that were reacting with diphenyl methane di-isocyanate (MDI) and mixing (PU, HKW-3055), which was supplied by Haina Environmental Science and Technology
Summary
In the past several decades, polyester textile has been widely applied to garment, upholstery, and decoration, etc. [1,2], because of its excellent properties, such as low cost, being resistant to chemicals, dimensional stability, and good physical features [3,4,5,6,7,8]. Treating polyester textile is a feasible method for obtaining flame-retardant textile due to its easy processing way. Importantly, a simple and efficient treatment processing treating polyester in More flame-retardant solution [34]. Treating polyester methodtextile can reduce the production cost andflame-retardant greatly save manual labour and processing material resources. The methods include grafting reactions [35], oxygen plasma treatment [36], layerIn treating this thesis, a kind ofphoto-induced phosphinate, which was named aluminum. A simple incorporated into polyurethane (PU) as back coating materials to prepare flame-retardantand polyester efficient treatment method can reduce the production cost and greatly save manual labour and textile, which was a simple and convenient way. Experimental incorporated into polyurethane (PU) as back coating materials to prepare flame-retardant polyester textile, which was a simple and convenient way. 3-Hydroxyphenylphosphinyl-propanoic acid (CPA) was provided by Dezhou Changxing Chemical
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