采用T700级湿喷湿纺碳纤维HF30G-12K和干喷湿纺碳纤维HF30T-12K分别搭配树脂MP60-01,含浸收卷制备预浸纱。使用预浸纱通过干法缠绕成型工艺制备NOL环、单向板、储气瓶等制件并进行力学性能测试。结果表明:在树脂基体相同的条件下,纤维等级相同的干喷湿纺碳纤维预浸纱与湿喷湿纺碳纤维预浸纱的工艺性、产品质量、材料界面性能等相近,但在NOL环拉伸强度、单向板0°拉伸强度和储气瓶水压爆破等方面,干喷湿纺碳纤维预浸纱性能比湿喷湿纺碳纤维预浸纱提高20%以上;干喷湿纺碳纤维生产的预浸纱产品性能更优。
T700-grade HF30G-12K wet-jet wet-spun carbon fiber and HF30T-12K dry-jet wet-spun carbon fibers were respectively combined with resin MP60-01,and the prepreg yarn was made by impregnating and winding the carbon fiber with the resin.The prepreg yarn was used to prepare NOL rings,unidirectional plates,gas cylinders and other parts through dry winding molding process,and their mechanical properties were tested.The results showed that,under the same resin matrix conditions,and with fibers of the same grade,the dry-jet wet-spun carbon fiber prepreg and the wet-jet wet-spun carbon fiber prepreg had similar properties in terms of processability,product quality,and material interface performance.However,the dry-jet wet-spun carbon fiber prepreg had a 20% or more higher tensile strength of NOL rings,0° tensile strength of unidirectional plates,and water pressure burst strength of pressure vessels than the wet-jet wet-spun carbon fiber prepreg.The prepreg yarn products made by dry-jet wet-spun carbon fiber had superior performance.
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