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    High strength and modulus polyvinyl alcohol fibers and method of their preparation
    2.
    发明授权
    High strength and modulus polyvinyl alcohol fibers and method of their preparation 失效
    高强度和模量聚乙烯醇纤维及其制备方法

    公开(公告)号：US4713290A

    公开(公告)日：1987-12-15

    申请号：US821374

    申请日：1986-01-22

    申请人： Young D. Kwon ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    发明人： Young D. Kwon ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    IPC分类号： D01F6/14 ,  D02G3/00

    CPC分类号： D01F6/14 ,  Y10T428/2913

    摘要： Polyvinyl alcohol of molecular weight over 500,000 (i.e. 1,500,000 to 2,500,000) is spun as a dilute solution (2-15%) in a relatively non-volatile solvent such as glycerin. The resultant gel fiber is extracted with a volatile solvent such as methanol and dried. Upon stretching at one or more stages during the process, fibers of tenacity above 10 g/denier and modulus above 200 g/denier (e.g. 18 and 450, respectively) are produced.

    摘要翻译： 分子量超过500,000（即1,500,000至2,500,000）的聚乙烯醇在相对非挥发性溶剂如甘油中以稀释溶液（2-15％）纺丝。 所得凝胶纤维用挥发性溶剂如甲醇萃取并干燥。 在该过程中在一个或多个阶段进行拉伸时，产生高于10g /旦尼尔的强度和高于200g /旦尼尔（分别为18和450）的模量的纤维。

    Method of preparing high strength and modulus polyvinyl alcohol fibers
    3.
    发明授权
    Method of preparing high strength and modulus polyvinyl alcohol fibers 失效
    制备高强度和模量聚乙烯醇纤维的方法

    公开(公告)号：US4440711A

    公开(公告)日：1984-04-03

    申请号：US432044

    申请日：1982-09-30

    申请人： Young D. Kwon ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    发明人： Young D. Kwon ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    IPC分类号： D01F6/14

    CPC分类号： D01F6/14

    摘要： Polyvinyl alcohol of molecular weight over 500,000 (i.e. 1,500,000 to 2,500,000) is spun as a dilute solution (2-15%) in a relatively non-volatile solvent such as glycerin. The resultant gel fiber is extracted with a volatile solvent such as methanol and dried. Upon stretching at one or more stages during the process, fibers of tenacity above 10 g/denier and modulus above 200 g/denier (e.g. 18 and 450, respectively) are produced.

    摘要翻译： 分子量超过500,000（即1,500,000至2,500,000）的聚乙烯醇在相对非挥发性溶剂如甘油中以稀释溶液（2-15％）纺丝。 所得凝胶纤维用挥发性溶剂如甲醇萃取并干燥。 在该过程中在一个或多个阶段进行拉伸时，产生高于10g /旦尼尔的强度和高于200g /旦尼尔（分别为18和450）的模量的纤维。

    Method for preparing tenacity and modulus polyacrylonitrile fiber
    4.
    发明授权
    Method for preparing tenacity and modulus polyacrylonitrile fiber 失效
    制备强度和模量聚丙烯腈纤维的方法

    公开(公告)号：US4883628A

    公开(公告)日：1989-11-28

    申请号：US910245

    申请日：1986-09-18

    申请人： Young D. Kwon ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    发明人： Young D. Kwon ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    IPC分类号： D01D5/00 ,  D01F6/18

    CPC分类号： D01D5/00 ,  D01F6/18

    摘要： Polyacrylonitrile (PAN) fibers are prepared by forming a 2-15 weight % solution of PAN of M.sub.w at least 500,000, extruding, cooling to below the gel temperature, extracting and drying. At least one of the gel fiber, the fiber containing extraction solvent and the dried gel is stretched. The product PAN fibers have a M.sub.w at least 500,000 (e.g. 1,000,000-4,000,000 or 1,500,000-2,500,000), a tenacity at least 5 g/den (e.g., at least 7 g/den) and a secant modulus at least 100 g/den (e.g. at least 125 g/den).

    摘要翻译： 通过形成Mw至少为500,000的2-15重量％的PAN溶液制备聚丙烯腈（PAN）纤维，挤出，冷却至低于凝胶温度，萃取和干燥。 将至少一种凝胶纤维，含纤维的提取溶剂和干燥的凝胶拉伸。 产品PAN纤维具有至少500,000（例如1,000,000-4,000,000或1,500,000-2,500,000）的Mw，至少5g / den（例如至少7g / den）的韧度和至少100g / den的割线模量 例如至少125g / den）。

    Ballistic-resistant fabric article
    8.
    发明授权
    Ballistic-resistant fabric article 失效
    防弹织物制品

    公开(公告)号：US4650710A

    公开(公告)日：1987-03-17

    申请号：US825114

    申请日：1985-12-09

    申请人： Gary A. Harpell ,  Igor Palley ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    发明人： Gary A. Harpell ,  Igor Palley ,  Sheldon Kavesh ,  Dusan C. Prevorsek

    IPC分类号： F41H5/04 ,  B32B7/00

    CPC分类号： F41H5/0485 ,  Y10S428/911 ,  Y10T428/31826 ,  Y10T442/2623

    摘要： The present invention provides an improved fabric which comprises at least one network of fibers selected from the group consisting of extended chain polyethylene (ECPE) extended chain polypropylene (ECPP) fibers, extended chain polyvinyl alcohol fibers and extended chain polyacrylonitrile fibers. A low modulus elastomeric material, which has a tensile modulus of less than about 6,000 psi, measured at about 23.degree. C., substantially coats the fibers of the network. Preferably, the fibers have a tensile modulus of at least about 500 grams/denier and an energy-to-break of at least about 22 Joules/gram.

    摘要翻译： 本发明提供了一种改进的织物，其包括至少一种选自延伸链聚乙烯（ECPE）延伸链聚丙烯（ECPP）纤维，延伸链聚乙烯醇纤维和延伸链聚丙烯腈纤维）的纤维网。 在约23℃下测量的低弹性体材料的拉伸模量小于约6,000psi，基本上涂覆网络的纤维。 优选地，纤维具有至少约500克/旦尼尔的拉伸模量和至少约22焦耳/克的能量破裂。