Glass composition for producing high strength and high modulus fibers

    公开(公告)号:US09878941B2

    公开(公告)日:2018-01-30

    申请号:US13879630

    申请日:2011-10-18

    摘要: A glass composition including SiO2 in an amount from about 70.0 to about 78.2% by weight, Al2O3 in an amount from about 18.6 to about 26.2% by weight, MgO in an amount from about 3.1 to about 10.7% by weight, CaO in an amount from 0.0 to about 7.6% by weight, Li2O in an amount from about 0.1 to about 5.0% by weight, and Na2O in an amount from 0.0 to about 0.2% by weight is provided. In exemplary embodiments, the glass composition is free or substantially free of B2O3 and fluorine. The glass fibers have a specific strength between about 1.6×106 J/kg and 2.24×106 J/kg and a specific modulus between about 3.3×107 J/kg and 3.7×107 J/kg. Glass fibers formed from the inventive composition possess exceptionally high specific strength and a low density, which make them particularly suitable in applications that require high strength, high stiffness, and low weight, such as in wind blades and aerospace structures.

    Chopper for commingled fibers
    60.
    发明授权
    Chopper for commingled fibers 有权
    混合纤维斩波器

    公开(公告)号:US08777136B2

    公开(公告)日:2014-07-15

    申请号:US13124463

    申请日:2009-10-22

    IPC分类号: B02C19/00

    摘要: A device for chopping fiber strand includes a form, and a strand feeding mechanism that delivers the strand to the form and conveys the strand along the form. First and second grinding wheels may be included to cut the strand into individual segments of desired length as the strand is conveyed along the form. A method of chopping a fiber strand includes the steps of delivering a continuous strand onto a base end of a form, conveying the continuous strand along the form from the base end toward a discharge end and cutting the continuous strand into individual segments of desired length, for example using first and second grinding wheels.

    摘要翻译: 用于切割纤维股线的装置包括一种形式,以及一条股线馈送机构,其将股线输送成形状并沿该形式输送股线。 可以包括第一和第二砂轮,以沿着所述形式输送所述股线将所述股线切割成所需长度的单个部分。 切割纤维线的方法包括以下步骤:将连续的线材递送到形式的基端上,将连续线材沿着形状从基端输送到排出端,并将连续的线材切割成所需长度的单个部分, 例如使用第一和第二砂轮。