Mechanical Behavior of Flax Knitted Fabric Reinforced Polyurethane Foam Plastics under Tensile and FEM Simulation

Jin Li; Li Bin Xia; Qian Liu

doi:10.4028/www.scientific.net/AMR.187.444

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 187Mechanical Behavior of Flax Knitted Fabric...

Mechanical Behavior of Flax Knitted Fabric Reinforced Polyurethane Foam Plastics under Tensile and FEM Simulation

Abstract:

Plain flax knitted fabrics which were divided into three types by different densities were knitted on computerized flat knitting machine in order to investigate the effect of fabric density on composite tensile properties. Flax/polyurethane composite materials which used flax as reinforcement, polyurethane foam plastics as matrix were prepared by reaction injection molding, and tensile tests were carried out in the wale and course directions. The results showed that the addition of knitted fabrics could greatly enhance the tensile properties of polyurethane foam, but the elongation decreased; The tensile strength of composite materials with the same density along the longitudinal direction was higher than the tensile strength along the transverse direction; With the density of the fabric increasing, the tensile strength of composite materials would also increase. Furthermore, tensile process was simulated by finite element software.