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作 者:白赫 钱晓明[1] 范金土 钱幺[1] 刘永胜 王小波[1] BAI He;QIAN Xiaoming;FAN Jintu;QIAN Yao;LIU Yongsheng;WANG Xiaobo(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;College of Physics and Materials Science,Tianjin Normal University,Tianjin 300387,China;Institute of Textiles and Clothing,The Hong Kong Polytechnic University,Hong Kong 999077,China)
机构地区:[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津师范大学物理与材料科学学院,天津300387 [3]香港理工大学纺织及服装学系,中国香港999077
出 处:《纺织学报》2019年第12期21-26,共6页Journal of Textile Research
基 金:国家重点研发计划项目(2017YFB0309300);天津市科技计划项目(17PTSYJC00150)
摘 要:为深入研究纤维质多孔材料的微观结构,通过建立纤维间接触点数量的理论模型,分别研究纤维在空间中三维和二维分布情况下,纤维间接触点数量的理论值。根据泊松分布的特点,结合Sampson等的研究结论,建立纤维间接触点数量、纤维直径和孔隙率的函数关系。使用Geo-Dict软件模拟纤维结构,同时计算纤维间接触点数量,再分别将纤维不同取向的理论预测值和前人研究结果相比较。结果表明:当纤维长径比不变时,纤维数量与纤维间接触点数量呈线性正比关系;当孔隙率不变时,纤维直径与纤维间接触点数量呈反比关系;当纤维直径固定时,纤维间接触点数量随孔隙率增加而减少;当纤维直径大于40μm时,接触点数量不随孔隙率的变化而改变。In order to study the microstructure of fibrous porous materials,the theoretical values of the number of contact points among fibers in three-dimensional and two-dimensional distribution of fibers in space were studied by establishing a theoretical model of the number of fiber contacts. According to the characteristics of Poisson distribution and combining with the research conclusions of Sampson et al,the functional relationships of the number of contact points among fibers,the diameter of fibers and the porosity were established. Geo-Dict software was adopted to simulate the fiber structure,and the number of fiber contacts was calculated. The theoretical predictions were compared with the results of previous studies. The results show that when the aspect ratio of fibers is constant,the number of fibers is proportional to the number of fiber contacts. When the porosity is constant,the diameter of fibers is inversely proportional to the number of fiber contacts. When the diameter of fibers is fixed,the number of fiber contact decreases with the increase of the porosity,and when the diameter of fibers is greater than 40 μm,the number of contacts does not change with the porosity.
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