For general composites, fiber can improve the strength of rubber matrix, but it will damage the original high deformation that affect the toughness. Therefore, to solve this problem, we propose a strategy of constructing rubber-helical fiber composite, which can not only improve the strength of rubber, but also maintain the original high deformation of rubber. Inspired by helical structure in nature, we convert straight fibers into helical fibers by winding. The helical fibers with spring characteristic have high strength and large deformation matching with rubber. The tensile strength and fracture toughness of the composite are 3.51 and 3.41 times those of the rubber matrix, respectively. When the aramid fiber was used instead of nylon fiber, the strength of the composite is 12.81 MPa, which is 17.8 times that of pure rubber matrix, and the mass fraction of the fiber is only about 1.60 %. Furthermore, by analyzing the reinforcement and toughening effect of helical fiber, we have determined that helical fiber plays the role of bearing stress and dispersing stress into three-dimensional space in composites.

中文翻译：

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高强度仿生螺旋纤维/弹性体复合材料

对于一般复合材料来说，纤维可以提高橡胶基体的强度，但会破坏原有的高变形量，影响韧性。因此，为了解决这一问题，我们提出了构建橡胶-螺旋纤维复合材料的策略，该复合材料不仅可以提高橡胶的强度，而且可以保持橡胶原有的高变形量。受自然界螺旋结构的启发，我们通过缠绕将直纤维转化为螺旋纤维。具有弹簧特性的螺旋纤维与橡胶相匹配，强度高、变形大。复合材料的拉伸强度和断裂韧性分别是橡胶基体的3.51和3.41倍。当用芳纶纤维代替尼龙纤维时，复合材料的强度为12.81 MPa，是纯橡胶基体的17.8倍，而纤维的质量分数仅为1.60%左右。此外，通过分析螺旋纤维的补强增韧作用，确定螺旋纤维在复合材料中起到承载应力和将应力分散到三维空间的作用。