基于灰色模型快速预测亚麻纤维力学性能

Rapid Prediction of Mechanical Properties of Flax Fiber Based on Grey Model

为评判亚麻纤维能否用于纺纱,以方便在实际产业化应用中纺纱用纤维的选用,建立了可快速、准确地预测亚麻纤维力学性能的灰色模型。基于灰色系统建模理论,测定亚麻纤维各成分含量及其力学性能,建立以成分含量为依据的纤维断裂伸长率、细度和断裂强度的灰色模型(GM),并探究各成分含量与力学性能之间关联。根据各模型分析出:亚麻纤维各成分含量对其力学性能具有一定的影响。纤维的断裂伸长率和细度随半纤维素、木质素含量的增加而增大,随纤维素、果胶含量的增加而降低;断裂强度随纤维素、木质素含量的增加而提高,随半纤维素、果胶含量的增加而降低。因此该模型可高效预测亚麻纤维力学性能,为亚麻纤维的便捷化分析提供理论基础和应用前景。

In order to judge whether flax fiber could be used for spinning well,and to facilitate the selection of spinning fibers in practical industrial application,a grey model was established to predict the mechanical properties of flax fiber rapidly and accurately.Based on the grey system modeling theory,each component content and its mechanical properties of flax fiber were determined,and a grey model(GM)of fiber elongation at break,fineness and breaking strength based on component content was established.In addition,the relationship between each component content and mechanical properties was explored.According to the analysis of the model,the content of each component of flax fiber has a certain influence on the mechanical properties.The increase of hemicellulose and lignin content has positive effect on the elongation at break and fineness of flax fiber,while the increase of cellulose and pectin content has a hindrance effect.The increase of cellulose and lignin content promotes the fracture strength,while the increase of hemicellulose and pectin content inhibites the fracture strength.The model can efficiently predict the mechanical properties of flax fiber,which provides a theoretical basis and application prospect for the convenient analysis of flax fiber.