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    • 9. 发明授权
    • Carbon fiber-reinforced composite material and method of making
    • 碳纤维增强复合材料及其制造方法
    • US06911169B2
    • 2005-06-28
    • US10315500
    • 2002-12-09
    • Choongyong KwagGary George TibbettsD. Gerald Glasgow
    • Choongyong KwagGary George TibbettsD. Gerald Glasgow
    • B29C70/14B29C45/00
    • B29C70/14
    • A method of making a composite article of a graphite-filled polymer mixture that is robust during high shear mixing and compounding, and that exhibits relatively low electrical resistivity after molding. The mixture is formed by shear mixing a liquid polymeric material, graphitized carbon fibers having diameters of less than one micrometer, and glass fibers longer than the carbon fibers. The carbon and glass fibers constitute up to about 25 volume percent and up to about 50 weight percent, respectively, of the mixture, though the addition of as little as about 1 weight percent of the glass fibers has been shown to dramatically reduce resistivity. The mixture is then introduced into a mold so that the glass fibers are substantially oriented parallel to the direction of flow. Due at least in part to the glass fibers being larger than the carbon fibers, the carbon fibers are substantially aligned with the glass fibers and preferentially segregate to regions of the polymeric matrix near interfaces between the polymeric matrix and the glass fibers.
    • 一种制备石墨填充聚合物混合物的复合制品的方法,其在高剪切混合和配混期间是坚固的,并且在模制之后显示相对低的电阻率。 混合物通过剪切混合液体聚合物材料,直径小于1微米的石墨化碳纤维和长于碳纤维的玻璃纤维形成。 尽管添加少至约1重量百分比的玻璃纤维可显着降低电阻率,碳和玻璃纤维分别占混合物的高达约25体积%和最多约50重量%。 然后将混合物引入模具中,使得玻璃纤维基本上定向为平行于流动方向。 至少部分地由于玻璃纤维大于碳纤维,碳纤维基本上与玻璃纤维对准,并优先分离到聚合物基质与聚合物基质和玻璃纤维之间界面附近的区域。