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    • 94. 发明授权
    • Pre-form and method of preparing a pre-form
    • 预制表格和准备表格的方法
    • US08778479B2
    • 2014-07-15
    • US10547749
    • 2003-03-06
    • Anton Bech
    • Anton Bech
    • D03D9/00B32B5/12B32B25/10B32B27/04B32B27/12
    • B29B11/16B29C70/20B29C70/202B29C70/543B29L2031/08Y10T156/10Y10T428/24124Y10T428/24331Y10T428/24752Y10T428/24851Y10T428/249939Y10T428/24994Y10T428/249945Y10T442/10
    • A pre-form and a method of preparing pre-forms are provided. The pre-forms comprise a resin and at least two layers of oriented fiber tows. The pre-forms comprise fiber tows instead of the traditional prepregs to enhance rearranging of resin and/or fibers during subsequent processing as well as provide greater freedom, a price reduction and/or a reduction of waste. The pre-forms may be formed three-dimensionally to enhance coupling to further pre-forms or other structures and/or to enhance shaping of the pre-form to a final three-dimensional shape. The method of preparation of pre-forms involves providing an adhesive between layers of fibers and providing a resin in contact with at least one of the layers of fibers. The resin is preferably provided in a non-continuous layer to allow for removal of gas at least partially in a direction orthogonal to the layers of resin. The pre-forms are suitable for preparation of composite structures like for example spars for wind turbine blades.
    • 提供了一种预形式和一种制备预形式的方法。 预成型件包括树脂和至少两层取向的纤维束。 预成型件包括纤维丝束代替传统的预浸料,以在随后的加工过程中增强树脂和/或纤维的重新排列,并提供更大的自由度,降低价格和/或减少废物。 预成型件可以三维地形成以增强与其他预成型件或其它结构的联接和/或增强预成型件的成形到最终的三维形状。 制备预成型体的方法包括在纤维层之间提供粘合剂并提供与至少一层纤维接触的树脂。 树脂优选设置在非连续层中,以允许至少部分地沿与树脂层正交的方向去除气体。 预制件适用于制备复合结构,例如风力涡轮机叶片的翼梁。