Abstract:
Flexible ballistic resistant composite material that has improved resistance to pick-up of water and other liquids, the composite material comprising a plurality of non-woven fibrous layers. The fibrous layers are formed from a network of high tenacity fibers (aramid fibers, extended chain polyethylene fibers and/or rigid rod fibers). The fibers are embedded in a matrix of a thermoplastic polyurethane resin. Preferably, at least two adjacent fiber layers are oriented in a cross-ply arrangement with respect to each other. Flexible armor, such as body vests, are provided which are formed at least in part from the flexible composite material.
Abstract:
A ballistic resistant composite material useful in rigid armor applications. The composite material includes at least one consolidated network of high tenacity fibers in a thermoplastic matrix material. The resin is a thermoplastic polyurethane resin that is semi-crystalline at room temperature. The high tenacity fibers have a tenacity of at least about 7 g/d. Prior to consolidation the polyurethane resin matrix material is in an aqueous medium. When dry, the polyurethane matrix material has a tensile modulus (at 100% elongation) of at least about 500 psi (3.45 MPa), a tensile modulus (at 300% elongation) of at least about 500 psi (3.45 MPa), and an ultimate tensile strength of at least about 2000 psi (13.78 MPa). The ballistic resistant composite material has improved ballistic properties.
Abstract:
Flexible ballistic resistant composite material that has improved resistance to pick-up of water and other liquids, the composite material comprising a plurality of non-woven fibrous layers. The fibrous layers are formed from a network of high tenacity fibers (aramid fibers, extended chain polyethylene fibers and/or rigid rod fibers). The fibers are embedded in a matrix of a thermoplastic polyurethane resin. Preferably, at least two adjacent fiber layers are oriented in a cross-ply arrangement with respect to each other. Flexible armor, such as body vests, are provided which are formed at least in part from the flexible composite material.
Abstract:
Body armor vests and other articles having combined ballistic performance and overall weight characteristics are described. A representative body armor vest comprises both a rigid breast plate and a flexible fabric adjoining the breast plate. Both components may comprise a plurality of unidirectionally oriented fibrous layers comprising fibers having high tenacity and a high tensile modulus.
Abstract:
A composite material which has excellent ballistic performance and has improved flexibility. Surprisingly, it has been found that a combination of poly(alpha-olefin) fiber and matrix resin provides these desirable product features. The resin matrix is a block copolymer of a conjugated diene and a vinyl aromatic monomer, preferably a styrene-isoprene-styrene block copolymer, that is applied as an aqueous composition. The fiber has a tenacity of at least about 35 g/d and a tensile modulus of at least about 1200 g/d. The composite has a total density equal to or less than about 100 g/m2 and a stiffness of less than about 2.5 pounds (1.14 kg) for a two layer structure of the composite, and a total areal density equal to or less than about 190 g/m2 and a stiffness of less than about 3.0 pounds (1.36 kg) for a four layer structure of the composite. The Peel Strength for a two layer structure of less than about 1.0 pounds (0.45 kg) for a two layer structure of the composite, and less than about 0.7 pounds (0.32 kg) for a four layer structure of the composite. The process of this invention permits fabrication of these desirable products in a cost-effective manner. Body armor made from the composite has improved flexibility and excellent ballistic characteristics.
Abstract translation:这种复合材料具有优异的弹道性能并具有改进的灵活性。 令人惊讶的是,已经发现聚(α-烯烃)纤维和基质树脂的组合提供了这些所需的产品特征。 树脂基体是共轭二烯和乙烯基芳族单体的嵌段共聚物,优选苯乙烯 - 异戊二烯 - 苯乙烯嵌段共聚物,其作为含水组合物施加。 该纤维具有至少约35g / d的韧度和至少约1200g / d的拉伸模量。 对于复合材料的双层结构,复合材料具有等于或小于约100g / m 2的总密度和小于约2.5磅(1.14kg)的硬度,总面密度等于或小于约190 g / m 2,并且对于复合材料的四层结构,刚度小于约3.0磅(1.36kg)。 两层结构的剥离强度对于复合材料的双层结构小于约1.0磅(0.45kg),对于复合材料的四层结构小于约0.7磅(0.32kg)。 本发明的方法允许以成本有效的方式制造这些理想的产品。 由复合材料制成的防弹衣具有改进的弹性和优异的弹道特性。
Abstract:
A ballistic resistant composite material useful in rigid armor applications. The composite material includes at least one consolidated network of high tenacity fibers in a thermoplastic matrix material. The resin is a thermoplastic polyurethane resin that is semi-crystalline at room temperature. The high tenacity fibers have a tenacity of at least about 7 g/d. Prior to consolidation the polyurethane resin matrix material is in an aqueous medium. When dry, the polyurethane matrix material has a tensile modulus (at 100% elongation) of at least about 500 psi (3.45 MPa), a tensile modulus (at 300% elongation) of at least about 500 psi (3.45 MPa), and an ultimate tensile strength of at least about 2000 psi (13.78 MPa). The ballistic resistant composite material has improved ballistic properties.
Abstract:
Un material compuesto balístico resistente flexible que tiene una flexibilidad mejorada, comprendiendo dicho material compuesto una pluralidad consolidada de capas fibrosas no tejidas, comprendiendo cada una de las capas fibrosas una red de fibras de poli(alfa-olefina) de alta tenacidad que tiene una tenacidad de al menos aproximadamente 35 g/d y un módulo de elasticidad a tracción de al menos 1200 g/d, estando dichas fibras en una matriz que comprende un copolímero bloque de un dieno conjugado y un monómero aromático de vinilo depositado sobre las fibras como una composición acuosa, en donde la estructura de dos capas de dicho compuesto tiene una densidad superficial total igual o menor de 100 g/m2 y una rigidez menor de aproximadamente 1,14 kg (2,5 libras) y en donde la estructura de cuatro capas de dicho compuesto tiene una densidad superficial total igual o menor de 190 g/m2 y una rigidez menor de 1,36 kg (3,0 libras).
Abstract:
Un material compuesto balísticamente resistente útil en aplicaciones de blindajes rígidos, comprendiendo dicho material compuesto al menos una red consolidada de fibras de alta tenacidad en un material de matriz termoplástico, teniendo dichas fibras de alta tenacidad una tenacidad de al menos 6.174 cN/dtex (7 g/d), caracterizado por que dicho material de matriz termoplástico comprende una resina de poliuretano termoplástico que es semicristalina a temperatura ambiente, que tiene una cristalinidad de al menos un 30%, donde dicho material de matriz de resina de poliuretano termoplástico, cuando está seco, tiene un módulo de tracción (con 100% de elongación) de al menos 500 psi (3.45 MPa), un módulo de tracción (con 300% de elongación) de al menos 500 psi (3.45 MPa), una elongación en la rotura de al menos un 500% y una resistencia a la tracción final de al menos 2000 psi (13.8 MPa), y donde antes de la consolidación dicho material de matriz comprende dicha resina de poliuretano en un medio acuoso.
Abstract:
Un método para formar un material compuesto balísticamente resistente útil en aplicaciones de blindaje rígido, comprendiendo dicho método: proporcionar al menos una red de fibras de alta tenacidad, teniendo las fibras de alta tenacidad una tenacidad de al menos 7 g/d (6,174 cN/dtex); aplicar a dicha red de fibras de alta tenacidad un material de matriz de resina de poliuretano termoplástico en un medio acuoso; y consolidar la combinación resultante de dicha red de fibras de alta tenacidad y dicho material de matriz de resina de poliuretano termoplástico; caracterizado por que dicho material de matriz de resina de poliuretano es semicristalino a temperatura ambiente, teniendo una cristalinidad de al menos 30%, y dicho material de matriz de resina de poliuretano cuando está seco tiene un módulo de tracción (con 100% de elongación) de al menos 3,45 MPa (500 psi), un módulo de tracción (con 300% de elongación) de al menos 3,45 MPa (500 psi), una elongación en la rotura de al menos 500% y una resistencia a la tracción final de al menos 13,78 MPa (2000 psi).
Abstract:
A composite material which has excellent ballistic performance and has improved flexibility. Surprisingly, it has been found that a combination of poly(alpha-olefin) fiber and matrix resin provides these desirable product features. The resin matrix is a block copolymer of a conjugated diene and a vinyl aromatic monomer, preferably a styrene-isoprene-styrene block copolymer, that is applied as an aqueous composition. The fiber has a tenacity of at least about 35 g/d and a tensile modulus of at least about 1200 g/d. The composite has a total density equal to or less than about 100 g/m2 and a stiffness of less than about 2.5 pounds (1.14 kg) for a two layer structure of the composite, and a total areal density equal to or less than about 190 g/m2 and a stiffness of less than about 3.0 pounds (1.36 kg) for a four layer structure of the composite. The Peel Strength for a two layer structure of less than about 1.0 pounds (0.45 kg) for a two layer structure of the composite, and less than about 0.7 pounds (0.32 kg) for a four layer structure of the composite. The process of this invention permits fabrication of these desirable products in a cost-effective manner. Body armor made from the composite has improved flexibility and excellent ballistic characteristics.