College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China; School of Textile Science and Engineering, Xi'an Polytechnic University, Xian 710048, China.
College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China; School of Textile and Clothing, Nantong University, Nantong 226019, China.
Int J Biol Macromol. 2024 Jul;273(Pt 2):132775. doi: 10.1016/j.ijbiomac.2024.132775. Epub 2024 May 30.
A novel flame retardant containing Si, N, and S elements, ((2-(triethoxysilyl)ethyl)thio)ethan-1-amine hydrochloride (TETEA), was synthesized via a click reaction and characterized using nuclear magnetic resonance spectroscopy (NMR) and fourier transform infrared spectroscopy (FTIR). Subsequently, the flame-retardant cotton fabric was fabricated by sol-gel method. The results indicated that TETEA was successfully loaded on cotton fabric and formed a uniform protective layer on the surface of cotton fabric, exhibiting excellent flame retardancy. The flame-retardant cotton fabric achieved limiting oxygen index (LOI) of 28.3 % and passed vertical combustion test without after-flame or afterglow time at TETEA concentration of 500 g/L. Thermogravimetric analysis revealed that the residual carbon content of the flame-retardant cotton fabric was much higher than that of the control under air and N conditions. Besides, the flame-retardant cotton fabric was not ignited in cone calorimeter test with an external heat flux of 35 kW/m. The peak heat release rate and the total heat release decreased from 133.4 kW/m to 25.8 kW/m and from 26.46 MJ/m to 17.96 MJ/m, respectively. This phosphorus-free flame retardant offers a simplified synthesis process without adverse environmental impacts, opening up a new avenue for the development environmentally friendly flame retardants compared to traditional alternatives.
一种新型含 Si、N 和 S 元素的阻燃剂，（2-（三乙氧基硅基）乙基）硫代乙胺盐酸盐（TETEA），通过点击反应合成，并通过核磁共振波谱（NMR）和傅里叶变换红外光谱（FTIR）进行了表征。随后，采用溶胶-凝胶法制备了阻燃棉织物。结果表明，TETEA 成功负载在棉织物上，并在棉织物表面形成均匀的保护层，表现出优异的阻燃性能。阻燃棉织物的极限氧指数（LOI）达到 28.3%，在 TETEA 浓度为 500g/L 时，垂直燃烧试验无续燃或余辉时间。热重分析表明，在空气和氮气条件下，阻燃棉织物的残碳含量明显高于对照样。此外，在外部热流为 35kW/m 的锥形量热计试验中，阻燃棉织物未被点燃。峰值热释放率和总热释放量分别从 133.4kW/m 降低到 25.8kW/m 和从 26.46MJ/m 降低到 17.96MJ/m。与传统替代品相比，这种无磷阻燃剂提供了一种简化的合成工艺，没有不利的环境影响，为开发环保型阻燃剂开辟了新途径。
