Abstract：
This research describes the synthesis of a silane derivative containing phosphorus and nitrogen atoms, leveraging their synergistic flame retardant effect through the incorporation of a PH bond to the isocyanate moiety. The synthesized silane featured alkoxysilyl groups, facilitating permanent bonds with the cotton fabric surface via hydrolysis. Cotton fabrics were modified using silane solutions of varying concentrations (2.5 %, 5 %, and 10 %) through a dip-coating process to determine the effect of the modifier amount on fabric properties. The modified fabrics were subjected to FT-IR, TGA, SEM, and EDS analyses, as well as microcalorimetric and LOI tests, to assess changes in flammability. FT-IR, SEM/EDS, and add-on analyses confirmed effective coverage of the cotton fabric with the flame retardant. Thermogravimetric tests indicated a significant reduction in the mass loss rate during thermal degradation. LOI analyses demonstrated a decrease in flammability (increase in LOI value), while microcalorimetric tests showed a substantial decrease in the heat release rate, correlating with increased modifier concentration on the fabric surface. Post-washing analyses revealed that, although some of the modifier was washed out, the samples still retained reduced flammability.
摘要：
这项研究描述了含磷和氮原子的硅烷衍生物的合成，通过将PH键结合到异氰酸酯部分来利用它们的协同阻燃效果。合成的硅烷具有烷氧基甲硅烷基，通过水解促进与棉织物表面的永久结合。棉织物使用不同浓度的硅烷溶液改性(2.5%，5%,和10％）通过浸涂工艺确定改性剂用量对织物性能的影响。对改性织物进行FT-IR,TGA,SEM,和EDS分析，以及微量热和LOI测试，评估可燃性的变化。FT-IR,SEM/EDS,和附加分析证实了阻燃剂对棉织物的有效覆盖。热重测试表明，在热降解过程中，质量损失速率显着降低。LOI分析表明可燃性降低(LOI值增加)，虽然微量热测试显示放热率大幅下降，与织物表面改性剂浓度增加有关。清洗后的分析表明，尽管一些改性剂被洗掉了，样品仍然保持降低的可燃性。
