纤维材料缓冲护具在运动训练中的应用研究

Study on the application of fiber cushion in sports training

此文玄武岩纤维表面化学惰性而表现出较弱的界面性能,采用静电纺丝方法制备聚丙烯腈(PAN)纳米纤维包覆玄武岩纤维(SBFC),进一步合成具有增强界面性能的新型纤维缓冲护具复合材料。通过纤维拔出试验用于评估缓冲护具材料的界面剪切强度。结果表明:在最佳电纺丝参数下引入PAN纳米纤维后,缓冲护具材料的剪切强度增加了31.33%。这种改进主要源于在玄武岩纤维和有机材料环氧树脂基质之间形成梯度界面层。梯度界面层能够使应力从环氧树脂均匀转移到玄武岩纤维中,并促进界面粘附。比较了2名运动员的桡骨关节在运动康复训练中使用和不使用纤维材料缓冲护具的康复情况,使用纳米纤维的运动康复训练的康复效果优于不使用纳米纤维的运动康复训练。

Due to the basalt fiber shows a weak interface performance due to its chemical inertness,therefore,polyacrylonitrile(PAN)nanofiber coated basalt fiber(SBFC)was prepared by electrospinning method,and a new type of fiber cushion protection composite with enhanced interface performance was further synthesized.The fiber pull-out test was used to evaluate the interfacial shear strength of the cushioning and protection materials.The test results showed that the shear strength of the cushion protector material increased by 31.33%after the introduction of PAN nanofibers under the optimal electrospinning parameters.This improvement has been mainly due to the formation of gradient interface layer between basalt fiber and organic material epoxy resin matrix.The gradient interface layer has made the stress uniformly transfer from the epoxy resin to the basalt fiber and promote the interface adhesion.also we also compared the rehabilitation of the two athletes’radial joints in the exercise rehabilitation training with and without the use of fiber material buffer protectors,and found that the rehabilitation effect of the exercise rehabilitation training using nanofibers was better than that of the exercise rehabilitation training without nanofibers.