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首页> 外文期刊>Journal of Applied Polymer Science >Performance of flame retardancy silk modified with water-soluble vinyl phosphoamide
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Performance of flame retardancy silk modified with water-soluble vinyl phosphoamide

机译：水溶性乙烯基磷酰胺改性阻燃丝的性能

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In this article, a water-soluble flame retardant monomer dimethyl(methacryloyloxyethyl)phosphoramidate (DMMEPN) was synthesized and applied onto silk fabric via graft copolymerization technique initiated with potassium persulfate (KPS). The results of attenuated total reflection infrared spectroscopy (ATR), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) indicated that DMMEPN was successfully grafted onto silk fiber surface. X-ray diffraction (XRD) patterns showed that grafting process didn't change the crystalline structure of silk fibers and the reaction mainly occurred at the amorphous region of silk fibers. DMMEPN grafted silk fabric exhibited self-extinguish property when ignited with a candle like fire with LOI of 32.38% and could pass vertical flammability test with char length of 42 mm. Thermal gravimetric analysis showed that grafted silk fibers had different thermal decomposition mode with control silk fibers and tended to produce more char after combustion. This article also investigated the physical properties like whiteness index, hygroscopicity, and tensile strength of grafted silk fabrics. The results showed that physical properties had some loss but had no negative effect on final uses. Laundering durability test demonstrated treated silk fabrics still showed flame retardancy after enduring 30 hand wash cycles.
机译：本文通过过硫酸钾（KPS）引发的接枝共聚技术合成了水溶性阻燃单体二甲基（甲基丙烯酰氧基乙基）磷酸氨基甲酸酯（DMMEPN），并将其应用于丝织物上。衰减全反射红外光谱（ATR），扫描电子显微镜（SEM）和能量色散X射线光谱（EDS）的结果表明，DMMEPN已成功接枝到丝纤维表面。 X射线衍射图谱表明，接枝过程并没有改变丝纤维的晶体结构，反应主要发生在丝纤维的非晶区。 DMMEPN接枝的真丝织物在用类似火焰的蜡烛点燃时具有自熄性，LOI为32.38％，并且可以通过焦炭长度为42 mm的垂直可燃性测试。热重分析表明，接枝丝纤维的热分解方式与对照丝纤维不同，燃烧后往往产生更多的炭。本文还研究了接枝丝织物的物理性能，如白度指数，吸湿性和拉伸强度。结果表明，物理性能有所损失，但对最终用途没有负面影响。洗涤耐久性测试表明，经处理的真丝织物经过30次手洗循环后仍显示出阻燃性。

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