氮和磷改性的溶胶-凝胶基阻燃化合物

Nitrogen and phosphorous modified compounds forsol-gel-based flame retardants

在德国促进联合工业研究发展计划(IGF)的19617 N号研究项目中,制备了氮和磷取代的烷氧基硅烷,并对其抑制织物火势生长和蔓延的能力进行了研究。为此,采用不同的策略合成了一系列阻燃剂,包括用氨基三烷氧基硅烷和/或三聚氰胺对有机磷化合物进行点击化学和亲核取代。采用轧-烘-焙工艺和溶胶-凝胶法,将新型无卤、无醛阻燃剂应用于棉(CO)、聚对苯二甲酸乙二醇酯(PET)、聚酰胺(PA)及其混纺织物上。阻燃效率通过EN ISO 15025测试方法评估。此外,通过附着在磷原子上的官能团或焙烘温度的优化,可控制阻燃剂的水溶性和耐洗性。总体而言,该项研究表明,N-P-硅烷是良好的纺织品耐久性阻燃剂。

In the insulin-like growth factor IGF project No.19617 N,nitrogen and phosphorus substituted alkoxysilanes were prepared and their ability to inhibit fire growth and spread for fabrics was explored.To this end,a series of flame retardants were synthesized using different strategies including click chemistry and nucleophilic substitution of commercial organophosphorus compounds with amino-based trialkoxysilanes and/or cyanuric chloride.The new halogen-free and aldehyde-free flame retardants were applied to different fabrics such as cotton(CO),polyethylene terephthalate(PET),polyamide(PA)and their blends using the well-known industrial pad-dry-cure technique and sol-gel method.The flame-retarding efficiencies were evaluated by EN ISO 15025 test methods.Moreover,the water solubility and the washing resistance could be controlled through the functional groups attached to the phosphor atom or through the optimization of the curing temperature.Overall,the research project demonstrated that N-P-silanes are very good permanent flame retardants for textiles.