الاستفادة من تقنية الغزل الرطب في إنتاج ألياف الكربون ودراسة العوامل المؤثرة عليها

Abstract EN

Carbon fibers are unique high-performance materials, as they contain at least 90% of carbon, in addition to their outstanding mechanical properties that qualify them to be the first choice for many life applications compared to other high-performance fibers, as they are characterized by high hardness, superior durability, and lightness weight.

however, the manufacturers of these fibers resort to some procedures during the production of these fibers using the wet spinning technique in the hope of increasing production and lowering the cost.

therefore, the aim of this research is to highlight this problem, which may have an undesirable effect on the quality and efficiency of the produced carbon fibers, by studying the effect of increasing the withdrawal rate of polyacrylonitrile fibers (the main source of carbon fibers) on the mechanical properties of the produced fibers.

four percentages were applied to increase the withdrawal rate (25%, 50%, 75%, 100%) in addition to the normal standard rate of withdrawal without any increase.

the results of the research showed that the tensile strength, elongation and fiber diameter were negatively affected by the increase in the percentage of the withdrawal rate of the fibers during wet spinning compared to the standard sample in which the rate of withdrawal was not increased, while the outer surface of the fibers has been improved by increasing the percentage of the withdrawal rate of the fibers compared to the standard sample that did not have an increase in the rate of withdrawal.

this means that the procedure of increasing the rate of withdrawal of the fibers is not suitable for applications that require a high rate of strength due to its negative impact on the mechanical properties of the produced carbon fibers, while this procedure is suitable for applications that require a high surface area without the need for strength, as in the case of manufacturing of carbon fibers for energy storage and batteries.