【摘 要】
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The carbon weft-knitted biaxial fabrics stictched by polyester fibers and preoxidized PAN fibers were prepared respectively.Tensile and tearing tests of two types of carbon biaxial weft-knitted(CBWK)
【机 构】
：
Engineering Research Center of Knitting Technology,Ministor of Education,Jiangnan University,Wuxi,Ji
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The carbon weft-knitted biaxial fabrics stictched by polyester fibers and preoxidized PAN fibers were prepared respectively.Tensile and tearing tests of two types of carbon biaxial weft-knitted(CBWK) fabrics stitched by different fibers were carried out.Stress-strain curves and load-displacement curves were obtained according to the testing data.The high-speed camera was employed to observe the whole testing process and series of still images were picked up according to the time nodes to analyze the meso-scale mechanism of the extension and displacement of tows on oriented layers and stitching yams.The properties of the two fabrics were compared based on the research of the stitching yarns mechanical performance.The researching results indicate that preoxidized PAN fiber exhibit higher mechanical behaviors, and the fabric bond by it displays wonderful performance.
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