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Recycling and reuse of waste artificial turf via solid-state shear milling technology

机译：通过固态剪切铣削技术回收和重用废物人工草皮

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摘要

Nowadays, the amount of the artificial turf waste is very huge, as it has been applied widely. However, it is a great challenge to recycle and reuse waste artificial turf (WAT) because its components are complex and hard to separate. In this study, solid-state shear milling ((SM)-M-3) technology was introduced to recycle WAT into composite powder with valuable properties through ultrafine milling of WAT at room temperature. The results showed that the WAT included 46.7 wt% PE, 8.7 wt% PP, 2.4 wt% PET, 16.1 wt% polyacrylate and 26.1 wt% inorganic infill. The results of SEM and ultra-depth three-dimensional (3D) microscopy indicated that the domain size of the recycled material became smaller with the increase of milling cycles. The domain size and the performance of the recycled material could be controlled by the particle size and the size distribution of the composite powder in the solid state. The dynamic mechanical analysis (DMA) and X-ray diffraction (XRD) patterns demonstrated that the (SM)-M-3 technology improved the compatibility between the components and effectively decreased the crystallite size of PE in WAT. The melt flow index and the high capillary rheology test indicated that the thermal processability of the recycling material became better through (SM)-M-3 milling. The tensile strength and the elongation at break of the recycling material reached 12.6 MPa and 96.3%, respectively. What's more, low-price wood-plastic products with good performance and appearance could be manufactured using the recycled materials.
机译：如今，人造草皮废物的量非常庞大，因为它已被广泛应用。然而，由于其组件复杂且难以分离，因此是回收和重用垃圾人造草皮（WAT）是一个巨大的挑战。在该研究中，将固态剪切铣削（（SM）-M-3）技术引入通过在室温下通过超细研磨Wat的有价值性的复合粉末再循环扫描。结果表明，WAT包括46.7wt％PE，8.7wt％PP，2.4wt％PET，16.1wt％聚丙烯酸酯和26.1wt％的无机填充物。 SEM和超深度三维（3D）显微镜的结果表明，随着研磨循环的增加，再循环材料的畴尺寸变小。域尺寸和再循环材料的性能可以通过固态的复合粉末的粒度和尺寸分布来控制。动态机械分析（DMA）和X射线衍射（XRD）图案表明（SM）-M-3技术改善了组分之间的相容性，并有效地降低了Wat中PE的微晶尺寸。熔体流动指数和高毛细血管流变检测表明，通过（SM）-M-3铣削，再循环材料的热量可加工性变得更好。回收材料断裂的拉伸强度和伸长率分别达到12.6MPa和96.3％。更重要的是，使用再生材料可以制造具有良好性能和外观的低价木塑制品。

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  • 来源
    《RSC Advances》 |2017年第85期|共11页
  • 作者

    Liu Qing; He Pan; Yang Shuangqiao; Bai Shibing; Duan Wenfeng;

  • 作者单位

    Sichuan Univ State Key Lab Polymer Mat Engn Polymer Res Inst Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Polymer Res Inst Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Polymer Res Inst Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ State Key Lab Polymer Mat Engn Polymer Res Inst Chengdu 610065 Sichuan Peoples R China;

    Beijing Oriental Yuhong Waterproof Technol Co Ltd State Key Lab Special Funct Waterproof Mat Beijing 100000 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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