Manufacturing of polygon fiber reinforced plastic profiles by rotational molding and intrinsic hybridization
Manufacturing of polygon fiber reinforced plastic profiles by rotational molding and intrinsic hybridization
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旋转成型和本征杂化制造多边形纤维增强塑料型材
DOI：
10.1007/s11740-015-0620-0
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Coutandin S
中科院分区：
文献类型：
--
作者：
Fleischer J;Koch S-F;Coutandin S
轻质轴、管道和型材的制造通常使用由纤维增强塑料（FRP）制成的空心结构，因为它们具有更好的密度相关性能。对于具有局部高摩擦学应力的应用，FRP的使用不能产生适当的结果。在轻量化结构方面，在高摩擦应力区域采用中空FRP基本结构和局部金属元素的混合设计是这些应用的理想选择。生产这些零件的一种很有前途的方法是旋转成型。frp -金属型材的旋转成型被理解为一种制造过程，其中机械加工的金属元件和干燥的连续纤维结构将被组装并放置在一个封闭的模具中。然后浇铸液体基体，高速旋转模具，直至纤维结构完全浸渍，基体固化。由于有较短的流动路径，该工艺提供了实现仅几分钟的短周期时间的潜力。本文介绍了通过旋转成型制造多边形型材的方法。这些剖面可以通过使用由wbk生产科学研究所开发的离心岩心来生产。这些芯由弹性体复合材料制成，并在旋转成型过程中膨胀。这些芯的建模及其对浸渍压力的影响，以及它们对实现更高纤维体积分数的贡献，都显示在这里。
The manufacturing of lightweight shafts, pipes and profiles often uses hollow structures made from fiber reinforced plastics (FRP) due to their better density related properties. For applications with locally high tribological stresses, the use of FRP is not yielding proper results. In terms of lightweight construction, a hybrid design with a hollow FRP basic structure and local metallic elements in areas of high tribological stress is ideal for these applications. A promising approach for the production of these parts is rotational molding. Rotational molding for FRP–metal profiles is understood as a manufacturing process where machined, metallic elements and dry continuous fiber structures will be assembled and laid in a closed mold. Afterwards, the liquid matrix will be casted and the mold is then rotated at high speed until the fiber structure is fully impregnated and the matrix is cured. As there are short flow paths, this process is offering the potential to realize short cycle times of only a few minutes. Within this paper, the manufacturing of polygon profiles via rotational molding is described. These profiles can be produced by using centrifugal cores which were developed at the wbk Institute of Production Science. These cores are made of an elastomer composite material and they expand during the rotational molding process. The modeling of these cores and their impact on the impregnation pressure is shown here as well as their contribution in achieving higher fiber volume fractions.
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