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    Complex composite article having improved impact resistance
    12.
    发明授权
    Complex composite article having improved impact resistance 失效
    具有改善耐冲击性的复合复合制品

    公开(公告)号：US4737402A

    公开(公告)日：1988-04-12

    申请号：US825040

    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： C08J5/24 ,  F41H5/04 ,  B32B7/00

    CPC分类号： A42B3/062 ,  C08J5/24 ,  F41H5/0435 ,  F41H5/0485 ,  Y10S428/902 ,  Y10S428/911 ,  Y10T442/3049 ,  Y10T442/3415 ,  Y10T442/3528 ,  Y10T442/607 ,  Y10T442/656 ,  Y10T442/671

    摘要： The present invention provides an improved, complex composite article of manufacture which comprises a network of high strength fibers having a tensile modulus of at least about 160 grams/denier and a tenacity of at least about 7 g/denier. An elastomeric material substantially coats each of the individual fibers, and has a tensile modulus of less than about 6,000 psi, measured at 25.degree. C. The coated fibers are provided with at least one additional rigid layer on a major surface of the coated fibers to produce a rigid complex composite. Composites of this construction have improved resistance to environmental hazards, improved impact resistance, and are unexpectedly effective as ballistic resistant articles such as armor plate or helmets.

    摘要翻译： 本发明提供了一种改进的复合复合制品，其包括具有至少约160克/旦尼尔的拉伸模量和至少约7克/旦尼尔韧度的高强度纤维网。 弹性体材料基本上涂覆每个单独的纤维，并且在25℃下测得的拉伸模量小于约6,000psi。涂覆的纤维在涂覆的纤维的主表面上提供至少一个附加的刚性层， 产生刚性复合复合材料。 这种结构的复合材料具有改善的耐环境危害性，耐冲击性改善，并且作为防弹制品如装甲板或头盔是意想不到的有效的。

    High tenacity, high modulus polyethylene and polypropylene fibers and intermediates therefore
    16.
    发明授权
    High tenacity, high modulus polyethylene and polypropylene fibers and intermediates therefore 失效
    因此，高韧性，高模量聚乙烯和聚丙烯纤维以及中间体

    公开(公告)号：US4413110A

    公开(公告)日：1983-11-01

    申请号：US359019

    申请日：1982-03-19

    申请人： Sheldon Kavesh ,  Dusan C. Prevorsek

    发明人： Sheldon Kavesh ,  Dusan C. Prevorsek

    IPC分类号： D01F6/02 ,  D01F6/04 ,  C08F10/02 ,  C08F10/06 ,  D01F6/06

    CPC分类号： D01F6/04 ,  D01F6/02 ,  Y10S428/902

    摘要： Solutions of ultrahigh molecular weight polymers such as polyethylene in a relatively non-volatile solvent are extruded through an aperture at constant concentration through the aperture and cooled to form a first gel of indefinite length. The first gels are extracted with a volatile solvent to form a second gel and the second gel is dried to form a low porosity xerogel. The first gel, second gel or xerogel, or a combination, are stretched. Among the products obtainable are polyethylene fibers of greater than 30 or even 40 g/denier tenacity and of modulus greater than 1000 or even 1600 or 2000 g/denier.

    摘要翻译： 在相对非挥发性溶剂中的超高分子量聚合物如聚乙烯的溶液通过孔径以恒定浓度挤出，并冷却以形成不定长度的第一凝胶。 用挥发性溶剂萃取第一凝胶以形成第二凝胶，并将第二凝胶干燥以形成低孔隙率干凝胶。 第一凝胶，第二凝胶或干凝胶或其组合被拉伸。 可获得的产品是大于30甚至40g /旦尼尔强度和大于1000或甚至1600或2000g /旦尼尔的模量的聚乙烯纤维。

    Temperature stable thermotropic poly(ester carbonate) derived from t-butylhydroquinone
    17.
    发明授权
    Temperature stable thermotropic poly(ester carbonate) derived from t-butylhydroquinone 失效
    衍生自叔丁基氢醌的温度稳定的热致聚（碳酸酯）

    公开(公告)号：US4398018A

    公开(公告)日：1983-08-09

    申请号：US333228

    申请日：1981-12-21

    申请人： Murali K. Akkapeddi ,  Bruce T. DeBona ,  Yu-Chin Lai ,  Dusan C. Prevorsek

    发明人： Murali K. Akkapeddi ,  Bruce T. DeBona ,  Yu-Chin Lai ,  Dusan C. Prevorsek

    IPC分类号： C08G63/64

    CPC分类号： C08G63/64

    摘要： A thermotropic poly(ester carbonate) containing diacyl moieties such as terephthalate and carbonate moieties as well as dihydroxy-derived moieties is useful for forming fibers or films. The dihydroxy-derived moieties are at least 40% derived from t-butylhydroquinone, with hydroquinone and methylhydroquinone being exemplary second components. The polymers can be prepared by melt, solution or interfacial polymerization, are liquid crystalline in the melt and have glass transition temperatures above 100.degree. C.

    摘要翻译： 含有二酰基部分如对苯二甲酸酯和碳酸酯部分的热致聚（酯碳酸酯）以及二羟基衍生的部分可用于形成纤维或膜。 二羟基衍生的部分至少40％来自叔丁基氢醌，其中氢醌和甲基氢醌是示例性的第二组分。 聚合物可以通过熔融，溶液或界面聚合制备，在熔体中为液晶，玻璃化转变温度高于100℃。

    Production of high strength polyethylene filaments
    18.
    发明授权
    Production of high strength polyethylene filaments 失效
    生产高强度聚乙烯长丝

    公开(公告)号：US4356138A

    公开(公告)日：1982-10-26

    申请号：US225288

    申请日：1981-01-15

    申请人： Sheldon Kavesh ,  Dusan C. Prevorsek ,  Donald G. Wang

    发明人： Sheldon Kavesh ,  Dusan C. Prevorsek ,  Donald G. Wang

    IPC分类号： D01D5/00 ,  D01F6/04 ,  B29C17/02

    CPC分类号： D01F6/04 ,  D01D5/00

    摘要： Production of polyethylene filaments of tenacity at least 30 g/d from a hot, supersaturated solution of high viscosity polyethylene having intrinsic viscosity of at least 11 dl/g, by contacting a length of such filament (functioning as a seed) simultaneously with a stationary arcuate surface and with such polyethylene solution, and withdrawing the filament through the solution in sliding contact around the surface at a rate reaching at least 30 cm per minute thereby producing tension and inducing crystal growth from the solution onto the filament, with increase of tension up to a steady state tension of at least 70 grams. More particularly the polyethylene has intrinsic viscosity of 17-28 dl/g, the solvent is xylene, the surface is composed of PTFE, the polyethylene concentration is 0.1 to 0.5 wgt. percent, the rate of withdrawing the filament is at least 200 cm per minute, and the polyethylene seed filament is initially led around the arcuate surface by attaching the filament to an endless loop which is drawn through the solution and around the surface; and then the seed filament is passed to a takeup reel; and afterward (when the tension has reached at least 70 g) the seed filament is severed from its supply source while growth of the product filament on the seed filament and from the end thereof proceeds.

    摘要翻译： 通过将一段长度的这种细丝（作为种子的作用）与固定的同时固定的同时从特定粘度为至少11dl / g的高粘度聚乙烯的热的过饱和溶液中制备出至少30g / d的强度的聚乙烯长丝， 弓形表面和这种聚乙烯溶液，并以高达每分钟至少30厘米的速率将表面以滑动接触的方式抽出细丝，从而产生张力，并引起溶液在细丝上的晶体生长，随着张力的增加 达到至少70克的稳态张力。 更具体地，聚乙烯具有17-28dl / g的特性粘度，溶剂是二甲苯，表面由PTFE组成，聚乙烯浓度为0.1至0.5重量％。 百分比，取出长丝的速率为每分钟至少200厘米，并且聚乙烯种子细丝最初通过将丝线附着到通过溶液并在表面周围的无限循环周围的弓形表面上引导; 然后将种子细丝通过卷取卷轴; 并且之后（当张力已经达到至少70g时），种子细丝从其供应源切断，同时在种子细丝上从其末端生长产物细丝。

    Method of estimating energy loss from pneumatic tires
    19.
    发明授权
    Method of estimating energy loss from pneumatic tires 失效
    估算充气轮胎能量损失的方法

    公开(公告)号：US4150567A

    公开(公告)日：1979-04-24

    申请号：US920591

    申请日：1978-06-29

    申请人： Dusan C. Prevorsek ,  Young D. Kwon ,  Raj K. Sharma

    发明人： Dusan C. Prevorsek ,  Young D. Kwon ,  Raj K. Sharma

    IPC分类号： G01M17/02

    CPC分类号： G01M17/02

    摘要： By wheel testing two tires having different construction parameters, e.g. different tire cords and measuring the temperatures at a few points within each tire body; and by measurement with a high strain dynamic viscoelastometer, the heat generation rate and dynamic tensile moduli (at various temperatures, strain frequencies and tensions) of the cords and rubber used in each tire are determined, where the values of the exponents "X" in the general equation relating cyclic strain amplitude, S, in the tire cord and in the rubber of each tire vs. the dynamic tensile moduli, E, for cords and rubber, at given temperature can be determined in the form: S.sub.A /S.sub.B=( E.sub.B /E.sub.A).sup.X.

    摘要翻译： 通过车轮测试具有不同结构参数的两个轮胎，例如 不同的轮胎帘线，并测量每个轮胎体内几点的温度; 并且通过用高应变动态粘弹仪测量，确定每个轮胎中使用的帘线和橡胶的发热速率和动态拉伸模量（在各种温度，应变频率和张力），其中指数“X”在 轮胎帘线和每个轮胎的橡胶中的循环应变幅度S与在给定温度下的帘线和橡胶的动态拉伸模量E的关系的一般方程式可以以下列形式确定：SA / SB =（ EB / EA）X。