La fibre de spectres, fabriquée par AlliedSignal, est une ...



Le Spectra, fabriquée par AlliedSignal, est une fibre de polyéthylène à haute résistance. Le polyéthylène est dissous dans un solvant et filé par une série de petits orifices, appelés spinnerets. Cette solution se solidifie en refroidissant ; la fibre refroidie a une apparence semblable au gel. La fibre de Spectres est alors utilisée pour faire le composé de Protection(Bouclier) de Spectres. Une couche de composé de Protection(Bouclier) de Spectres consiste en deux couches unidirectionnelles en fibre de Spectres, arrangée pour se croiser(se traverser) à 0-et des angles à 90 degrés(diplômes) et tenu en place par une résine flexible. Tant la fibre que les couches de résine sont scellés entre deux feuilles(draps) minces de film de polyéthylène, qui est semblable en apparence à l'enveloppe alimentaire en plastique. Selon AlliedSignal, le tissu nontissé résultant est incroyablement fort, léger et a p balistique excellentEt a des capacités de protection balistiques excellentes. La protection(le bouclier) de Spectres est faite dans une variété de styles pour l'utilisation tant dans concealable que dans des demandes(applications) d'armure dures.

Le Spectra est une des fibres les plus résistantes et les plus légères du monde. Un polyéthylène blanc brillant, il est, pour le même poids, quinze fois plus résistant que l'acier, plus durable que le polyester et a une solidité qui est 40 pour cent plus grande que celle de la fibre d’aramide.

Le Spectra est une fibre de polyéthylène qui est produite utilisant un processus de gélification breveté. Le polyéthylène est un plastique remarquablement durable et les scientifiques de Honeywell ont capturé la grande résistance naturelle au niveau moléculaire de ce plastique pour créer une des fibres les plus résistantes et les plus légères du monde. Le processus de gélification et les différentes étapes suivantes permettent au Spectra d'avoir une température de fusion beaucoup plus élevée (150°C) que le polyéthylène standard.

Avec sa remarquable résistance et ses propriétés viscoélastiques, le Spectra peut résister a des charges ou des vitesses élevées. Il possède aussi une haute résistance aux produits chimiques, à l'eau et aux ultraviolets. Il a possède un bon amortissement aux vibrations, une bonne résistance à la flexion.

Le Spectra est utilisé pour des nombreuses applications en dehors des gilets pare-balle , comme des casques et des véhicules blindés, aussi bien que de la toile de voile, des lignes de pêche, du cordage marin et des gants de protection.

|Spectra® Fiber |

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|Spectra® fiber is one of the world's strongest and lightest fibers. A bright white |

|polyethylene, it is, pound-for-pound, fifteen times stronger than steel, more durable than |

|polyester and has a specific strength that is 40 percent greater than aramid fiber. |

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|Spectra® fiber a polyethylene fiber that is produced using a patented gel-spinning process.|

|Polyethylene is a remarkably durable plastic, and scientists at Honeywell have captured the|

|tremendous natural strength in the molecular backbone of this everyday plastic to create |

|one of the world's strongest and lightest fibers. The gel-spinning process and subsequent |

|drawing steps allow Spectra® fiber to have a much higher melting temperature (150°C or |

|300°F) than standard polyethylene. |

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|With outstanding toughness and extraordinary visco-elactic properties, Spectra® fiber can |

|withstand high-load strain-rate velocities. Light enough to float, it also exhibits high |

|resistance to chemicals, water, and ultraviolet light. It has excellent vibration damping, |

|flex fatigue and internal fiber-friction characteristics, and Spectra® fiber's low |

|dielectric constant makes it virtually transparent to radar. |

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|Spectra® fiber is used in numerous high-performance applications, including police and |

|military ballistic-resistant vests, helmets and armored vehicles, as well as sailcloth, |

|fishing lines, marine cordage, lifting slings, and cut-resistant gloves and apparel. |

|Honeywell also converts Spectra® fiber into the Spectra Shield® family of specialty |

|composites for armor and other applications. |

|Shield Materials for Bullet Resistant Vests |

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|Honeywell offers a variety of soft armor products, for use in a wide range of concealable |

|and tactical body armor. |

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|Our Spectra Shield® and Spectra Shield® II soft armor products combine our patented |

|Spectra® fiber with shield technology, to provide the best available performance / weight |

|ratio. These products provide excellent stopping power and exceptional multi-hit, angle |

|shot and trauma reduction benefits. |

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|Honeywell also offers several aramid Shield products, and will work with you to select the |

|most appropriate material based on performance, threat, comfort, and cost requirements. Our|

|products include several Gold Shield® products, as well as our Gold Flex® ballistic |

|material, designed for added comfort and flexibility. |

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|For more information on any of these products, please download a Product Information Sheet |

|from our Products page. |

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|Shield Technology |

|Body armor composites that smash bullets. Shield technology is a nonwoven, cross-plied |

|unidirectional tape that enables more fibers to engage the round, dispersing a bullet's |

|energy 360° throughout the panel for outstanding stopping power. |

|Spectra Shield® Products |

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|Spectra Shield® products have been protecting military and law enforcement personnel for |

|the past 20 years, and that history of innovation continues with the release of the Spectra|

|Shield® II product line. |

|SR-3124, our Spectra Shield® II hard armor product, incorporates high-strength Spectra® |

|3000 fiber into our proven hard armor shield construction, to provide the highest levels of|

|protection for breast plate, helmet, and vehicle applications. |

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|SA-3118 and SA-3113 are our Spectra Shield® II soft armor offerings, providing the best |

|known ballistic protection for military and law enforcement vest applications. SA-3118 |

|maximizes ballistic performance, while SA-3113 was designed for added flexibility and |

|comfort, while maintaining a high level of performance. |

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|SR-1214 is our standard Spectra Shield® hard armor product, used in plate, helmet and |

|vehicle programs throughout the world. |

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|SA-1211, continues to be used in some of the most demanding vest applications, and is |

|designed to meet the comfort and flexibility demands of the user, while maintaining strong |

|ballistic performance and reducing the effects of blunt trauma. |

Spectra

Honeywell

|Materials based on the Honeywell Spectra fiber are also used in various vehicular |

|protection applications. Spectra Shield PCR designed from the Spectra fibers offers a |

|floatable protection module, which almost does not absorb moisture - an important |

|consideration for amphibious vehicle and floatable protection. The Spectra high strength|

|polyethylene based fibers were introduced in the 1980s. It is 10 times stronger than |

|steel, these are 40%, stronger than aramid fibers. The Spectra Shield is constructed |

|from parallel strands of fibers held in place with a resin, every new layer is cross |

|plied at right angles and the entire structure is fused into a composite structure under|

|heat and pressure. The 3rd generation Spectra Shield uses an integrated Ceradyne ceramic|

|face plate, defeating high velocity AP rifle rounds. This type of protection is widely |

|used in the Small Arms Protective Insert (SAPI) used with modern body armor. |

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