纳米TiO_2溶胶制备及其对PBO纤维抗紫外光老化的影响

Preparation of TiO_2 Nanosol and its Effect on Decelerating UV-Photodegradation of PBO Fiber

制备了特定配比的TiO2溶胶,并把TiO2溶胶应用到PBO纤维表面形成抗老化TiO2涂层;使用紫外灯连续照射PBO纤维,从宏观力学性能和微观结构两个角度研究TiO2涂层对缓解PBO纤维紫外老化速度的作用。

PBO fiber is the most excellent high performance fiber and is called ＂the king of fiber＂. But it is a kind of photosensitive material and is prone to degrade under UV radiation, which results in the changes of the fiber＇s mechanical properties, finally affects the using of the material. In this paper, the TiO2 sol is prepared at a special proportion. The PBO fiber is coated by the TiO2 sol. The effect of TiO2 coating on the deceleration of UV - photo degradation of PBO fiber is studied from two points of view ： mechanical properties and micro structure.