A METHOD FOR PRODUCING LOWER SIZE, HIGH TENACITY AND HIGH MODULUS POLYETHYLENE FIBER
    2.
    发明公开
    A METHOD FOR PRODUCING LOWER SIZE, HIGH TENACITY AND HIGH MODULUS POLYETHYLENE FIBER 有权
    生产低丝聚乙烯纤维计数法高强,高模量

    公开(公告)号:EP2194173A1

    公开(公告)日:2010-06-09

    申请号:EP08800599.6

    申请日:2008-09-11

    IPC分类号: D01D5/00 D01F6/04

    摘要: The present invention discloses a process for producing low-titer, high-strength and high-modulus polyethylene fibers, comprising the following steps: dissolving the ultra-high molecular weight polyethylene into paraffin oil with a low viscosity to form a spinning solution with a concentration of 3∼15%; extruding the spinning solution through a thin spinneret with at least 10 orifices having a diameter Φ of 0.7∼0.8mm and a length/diameter ratio of 10∼12, by applying a high pressure in the range of 2.5±1.0MPa to the spinning solution, such that the fluid in the orifices is extruded at a shear rate of 200∼3 500sec -1 ; and then performing a jet stretch at a deformation rate of 200∼5 000min -1 within an air-gap of 10∼15mm between the spinneret and the quench bath surface; feeding the jet-stretched fluid into the quench bath to form gel filaments; extracting and drying the gel filaments; and performing a multistage ultrahigh post stretch on the dried gel filaments with a stretch ratio of 15 or less. In this process, the solution is extruded at a high rate by using a spinneret with small orifice diameter, thereby achieving a high shear rate and a high deformation rate, so the present process is a novel and effective spinning process.

    摘要翻译: 本发明盘松动生产低滴度,高强度和高模量聚乙烯纤维,所述方法包括以下步骤的方法:将超高分子量聚乙烯石蜡油溶解具有低粘度,以形成具有浓度的纺丝溶液 的3¼15%; 挤出通过喷丝头的薄带具有直径至少为10个孔纺丝溶液|,通过向纺丝溶液施加高压在2.5±1.0MPa的范围0.7¼0.8mm和10¼12的长度/直径比的,搜索 并在孔的流体在500秒-1200¼3的剪切速率挤出; 然后在内的喷丝头和骤冷浴表面之间的10¼15mm气隙200¼5000min -1的形变速率进行喷射伸展; 供给喷射拉伸流体进入骤冷浴,以形成凝胶丝; 提取和干燥所述凝胶细丝; 并执行与的15或更小的拉伸比将干燥的凝胶丝的多级超高交拉伸。 在此过程中,将溶液以高速率通过使用喷丝头具有小喷孔直径,从而实现高剪切速率和高的变形,率作为本发明的方法的新颖和有效的纺丝工艺挤出。

    STAB-RESISTANT BALLISTIC-RESISTANT MATERIAL AND PRODUCTION PROCESS THEREOF
    4.
    发明公开
    STAB-RESISTANT BALLISTIC-RESISTANT MATERIAL AND PRODUCTION PROCESS THEREOF 有权
    STICH- UND SCHUSSFESTES材料SOWIE VERFAHREN ZU SEINER HERSTELLUNG

    公开(公告)号:EP2433790A1

    公开(公告)日:2012-03-28

    申请号:EP10790338.7

    申请日:2010-05-20

    IPC分类号: B32B5/26 B29C70/00 F41H5/04

    摘要: A stab and ballistic resistant material, comprising a stab-resistant layer and a ballistic resistant layer, wherein the stab-resistant layer comprises at least one layer, wherein each layer is constituted of two units, each of which is formed from perpendicularly combined high strength and high module unidirectional fiber prepreg strips, adjacent units are combined with rotated 45°, and the stab-resistant layer has membranes adhered to both sides; the ballistic resistant layer comprises at least one layer, wherein each layer is constituted of two units, each of which is formed from perpendicularly combined unidirectional fiber prepreg strips, adjacent units are combined with rotated 90°, and the ballistic resistant layer has membranes adhered to both sides. The invention also provides a method for preparing the above stab and ballistic resistant material. The stab and ballistic resistant material of the invention functions to defend both stabs and bullets, which makes stab and ballistic resistant vest to be lighter, more efficient in protection, and easy to produce.

    摘要翻译: 一种防刺防弹材料,其特征在于,具有防刺层和防弹层,其特征在于,所述防刺层包括至少一层,其中每层由两个单元组成,每个单元由垂直组合的高强度 和高模块单向纤维预浸料条,相邻单元结合旋转45°,防刺层具有粘附在两侧的膜; 防弹层包括至少一个层,其中每个层由两个单元组成,每个单元由垂直组合的单向纤维预浸料条形成,相邻的单元与旋转90°组合,并且防弹层具有粘附到膜 双方。 本发明还提供了制备上述防刺和防弹材料的方法。 本发明的防刺和防弹材料起到防刺和子弹的作用,使得刺和防弹背心更轻,保护效率更高,易于生产。