接枝阻燃改性粘胶纤维性能测试

 对经接枝阻燃改性后的粘胶纤维进行了阻燃性、热稳定性、力学性能及纤维形态等方面的测试分析。阻燃粘胶纤维的极限氧指数为28.0%,强度为2.84 cN/dtex,短纤维率为9%。DTA数据显示纤维在200~300℃之间吸热,这时纤维的质量损失为40%。与普通粘胶纤维相比,接枝阻燃粘胶纤维的强度仅下降2%,短纤维率增加了3%。用电子扫描显微镜观察接枝阻燃粘胶纤维的表面形态,发现纤维的纵向和横截面都比较光滑,没有明显的缺陷出现。这说明对普通粘胶纤维接枝阻燃改性后,其阻燃性和力学性能已经达到了生产应用的要求。

Test on the properties of the fire retardant common viscose fiber prepared by graft modification

The properties such as flame resistance,thermal stability,and mechanics as well as the morphology of the fire retardant viscose fiber,which was obtained from graft modification of common viscose fiber,were tested.The results indicate that LOI of the fire retardant viscose fiber is 28.0%,intensity is(2.84 cN/dtex) and short fiber content(SFC) is 9%.TG-DTA shows the fire retardant viscose fiber has absorbed the heat during 200～(300 ℃) with the weight loss of 40%. Compared with common viscose fiber its intensity has decreased by only 2%,and SFC has increased by 3%.Fiber′s longitudinal surface and cross section are comparatively smooth.No visible holes and cracks were observed on the surface of the fire retardant viscose fiber by SEM.This demonstrates that the fire retardant viscose fiber is up to the production requirements in flame resistance and mechanics.