超吸水纤维的主要性能

研究超吸水纤维的线密度，断裂强度和伸长率、表面形态、吸水倍率等主要性能。结果表明：超吸水纤维具有优异的吸水能力，吸水倍率超过120 g/g，吸水体积膨胀后仍能保持近似纤维凝胶态的结构，适合于开发吸液材料；纤维截面呈圆形，表面光滑，无卷曲，强度和断裂伸长均很小且离散性大，断裂强度小于0.8 cN/dtex，断裂伸长率小于5.5%，力学性能较差，难以作为单一原料开发产品，需与其他纤维混合制成高吸液材料。

Key properties of super absorbent fiber

This paper studied the key properties of super absorbent fiber（SAF）such as linear density. Breading strength and elongation rate, modality of surface, water absorbent ratio, etc. The experimental results show that SAF has excellent water absorbability, it can absorb water more than 120 times of the fiber′s weight (>120 g/g) and the swelled fiber still keeps fiber-gel state after absorption,so it′s fit to develop the liquid absorbent materials. But SAF has circle shape of cross section and smooth surface and on crimp, its breaking strength (<0.8 cN/dtex) and elongation rate (<5.5%) are not only low but high variance. These means the mechanical properties of SAF are poor, it′s very difficult to develop products by way of using pure SAF. It′s need to blend with other fibers to develop the liquid absorbent materials of using SAF.