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首页> 外文期刊>Journal of Applied Polymer Science >Fiber preparation and mechanical properties of recycled polypropylene for reinforcing concrete
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Fiber preparation and mechanical properties of recycled polypropylene for reinforcing concrete

机译：钢筋混凝土再生聚丙烯的纤维制备和力学性能

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Polypropylene (PP) fibers have been widely used to reinforce concrete footpatbs as an alternative to steel mesh. The rein-forcing effect of the PP fiber is directly proportional to its tensile strength and Young modulus. This research explored the feasibility of using an improved it spinning and at drawing process to produce virgin and recycled PP fibers of high mechanical properties in an industrial scale. Commercial grade granules of virgin PP, recycled PP and HPDE were mixed in different proportions in preparing five different types of fibers. All the fibers obtained high tensile strength and Young modulus,. A relationship between the structural parameters and mechanical properties was then established. It was observed that the melt spinning and hot drawing process formed both alpha-form and beta-form crystals in the PP fibers, and significantly improved crystallinity from about 50% to 80%, (C) 2015 Wiley Periodicals, Inc.
机译：聚丙烯（PP）纤维已被广泛用于加固混凝土脚踏板，以替代钢网。 PP纤维的增强效果与其拉伸强度和杨氏模量成正比。这项研究探索了使用改良的it纺丝和拉丝工艺在工业规模上生产具有高机械性能的原生和再生PP纤维的可行性。将原始PP，再生PP和HPDE的商业级颗粒按不同比例混合以制备五种不同类型的纤维。所有纤维均获得高拉伸强度和杨氏模量。然后建立了结构参数和机械性能之间的关系。观察到，熔融纺丝和热拉伸工艺在PP纤维中同时形成了α形和β形晶体，并将结晶度从大约50％显着提高到80％（C）2015 Wiley Periodicals，Inc.

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