有机高性能Kevlar纤维表面改性研究

The Research on the Surfacial Modification of Organic High-Performance Kevlar Fiber

试图通过化学处理方法在Kevlar纤维表面引入活性基团 ,从而达到对Kevlar纤维进行表面接枝改性的目的。通过红外光谱分析方法研究了甲苯 2 ,4 二异氰酸酯 (TDI)接枝Kevlar纤维的反应 ,探讨了水解时间对其产物中—O—H基含量的影响 ;纤维水解对接枝反应 ,及其己内酰胺的封端处理对接枝产物的影响。结果表明 ,纤维水解后含有较多的—O—H基 ,且有利于接枝反应的进行 ;而己内酰胺的封端处理可以得到稳定化的接枝产物。证明了只要在纤维表面引入少数活性基团就会有效地改善纤维 /树脂界面的结合。

In the paper the authors tried to use chemical disposal to bring the activity mass onto the surface of Kevlar fiber with the purpose of surface graft modification. In the paper the authors used the FTIR spectra to discuss the graft of toluene-2,4-diisocyanate onto Kevlar fiber. The authors studied and analysed the effect of hydrolytic time on the content of -O-H group of the production, and the effect of hydrolyzation and hexyl-lactam steadily disposing on the graft reaction. The result showed that the content of -O-H group increased after hydrolyzation, it's helpful for the graft reaction, and hexyl-lactam steadily disposing made the graf product more stable. Through the research the authors came to the conclusion that by bringing some activity masses onto the fiber surface the authors can improve the interface of fiber/resin effectively.