天然纤维织物复合材料制备工艺的模糊评判

Fuzzy evaluation of preparation technology of natural fiber textiles composite

运用模糊综合评判理论,以天然纤维织物复合材料力学性能为依据,建立材料制备工艺的多因素单层次隶属函数评判模型;并对热压3要素和铺装方式进行了综合模糊评价,得到了制备工艺最优排序。测试了不同层数的复合材料,从宏观层面验证了模型的准确性;并应用场发射环境扫描电镜(FESEM)对7.5 Nm和13.5 Nm纤维增强体的拉伸断面进行了表征,进一步从微观层面解释了评判结果的可靠性。结果表明,最优工艺为:热压压力3 MPa,热压温度120℃,热压时间5 min,铺装方式[(0/90)]7。

Multi-factor single-level evaluation model of the materials preparation technology,based on mechanical properties of natural fiber fabric composite,was eatablished by using theory of fuzzy comprehensive evaluation;the preparation process factors such as three elements of hot-pressing and paving ways were evaluated by using comprehensive fuzzy model,thus the optimization sorting for the preparation processes was obtained.Through the test of composite with different layers,the accuracy of the model was verified;field-emission environmental scanning electron microscope was applied to characterize the tensile cross-sections of composite which have fiber reinforcement of 7.5Nm and 13.5Nm,and the reliability of the evaluation results was confirmed from the micro level.The results show that the optimum process conditions are as follows： hot-pressure,hot-pressing temperature,pressing time and paving way are respectively 3MPa,120℃,5minutes,[（0 / 90）／47.