WO2021173042A1 - Bande de blindage anti-éclats - Google Patents

Bande de blindage anti-éclats Download PDF

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Publication number
WO2021173042A1
WO2021173042A1 PCT/RU2021/050044 RU2021050044W WO2021173042A1 WO 2021173042 A1 WO2021173042 A1 WO 2021173042A1 RU 2021050044 W RU2021050044 W RU 2021050044W WO 2021173042 A1 WO2021173042 A1 WO 2021173042A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibers
mesh
shielding
acid
metallized
Prior art date
Application number
PCT/RU2021/050044
Other languages
English (en)
Russian (ru)
Inventor
Ирина Анатольевна ЗАДОРОЖНАЯ
Артем Анатольевич ЗАДОРОЖНЫЙ
Original Assignee
Ирина Анатольевна ЗАДОРОЖНАЯ
Артем Анатольевич ЗАДОРОЖНЫЙ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from RU2020107954A external-priority patent/RU2756749C2/ru
Application filed by Ирина Анатольевна ЗАДОРОЖНАЯ, Артем Анатольевич ЗАДОРОЖНЫЙ filed Critical Ирина Анатольевна ЗАДОРОЖНАЯ
Publication of WO2021173042A1 publication Critical patent/WO2021173042A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H1/00—Personal protection gear
    • F41H1/02—Armoured or projectile- or missile-resistant garments; Composite protection fabrics

Definitions

  • the invention relates to the field of laminated bullet-resistant materials made of ballistic fabric with shielding properties, and can be used in the manufacture of mass protection.
  • the mass of the material in which metallized aramid fibers are used is significantly lower, since one layer is both anti-spall and shielding.
  • the prior art knows materials shielding against electromagnetic interference, for example: Aaronia X-Dream - a fabric shielding against electromagnetic interference (100 dB) [http: //el-kor.rn/bezehovye-kamery-i- ekrankamery-ekranimyushchie-materialy / aaronia-x-dream-tkan-ekranimyushchaya-ot-elektromagnitnyh-pomeh-100-db].
  • This fabric has a frequency range of shielded signals 1 MHz - 30 GHz, shielding efficiency - 70 dB; 99.999999% at 20 GHz.
  • the material of the fabric is a mixture of copper and nickel, the backing is polyester.
  • the type of shielded signals is HF and LF electric fields. Available in sizes from 1 m 2 to 50 m 2 . Wireless signals of standards practically do not penetrate through such fabric: GSM and / or DECT, and / or BLUETOOTH, and / or WLAN and other electromagnetic signals in the range from 1 MHz to 30 GHz.
  • the technical problem of the present invention lies in the need to create a durable and lightweight anti-splinter cloth, at the same time, capable of shielding the frequencies of a possible WA.
  • the technical result consists in providing the possibility of isolating explosive or suspicious objects by preventing the initialization of an explosive device located in them, the detonator of which is controlled by a radio channel.
  • the anti-splinter fabric is made of aramid fibers, the most durable material available.
  • the screening efficiency S c which depends on the frequency, material, thickness and linear dimensions of the screening mesh cell, can, for example, be determined by the following formula:
  • the novelty of the claimed invention is that the grid, which allows maximum retention of fragments and does not allow the initiation of a radio-controlled explosive device, made with the expectation of the most effective shielding of electromagnetic radiation (hereinafter - EMP) in the range from 20 MHz to 6 GHz (for example, using the expression (1 ), performed on the principle of a Faraday cage of aramid fibers metallized with heavy metals.
  • - EMP electromagnetic radiation
  • the process of metallization of aramid fibers can be carried out according to one of the known methods, for example, according to RF patent 2144965.
  • the most suitable metal for shielding is copper.
  • the first stage of metallization in this case is pre-pickling - contacting aramid fibers with a pre-treatment acid (this can be aqueous nitric acid, or chlorofluorosulfonic acid in an organic liquid that does not react with acids). This process is carried out at a temperature of 20 to 40 ° C and at a time of 5 to 60 seconds, depending on the acid concentration of the pretreatment (within 75-95%), if the fibers are in contact for more than 120 seconds in certain cases, then they are destroyed.
  • the purpose of the first stage is to create some structural changes and microcracks on the fiber surface to facilitate further better adhesion of the metal to the fiber.
  • the fibers are washed either with water to reduce the concentration of acid on the fiber, or with a base or basic sodium bicarbonate salt to neutralize the acid and remove it from the fiber. Then, desirably, but not necessarily, the fibers are dried to better remove excess moisture or acid, then a salt with a palladium and tin cation as a catalyst is added to an aqueous solution of copper, and the acid-etched and washed fibers are immersed in it and mixed to ensure surface activity fibers to interact with copper. Then, the fibers are removed from this solution, and, if necessary, immersed in an accelerator bath with diluted mineral acid to saturate the fiber surface with minerals.
  • the metallization stage begins directly, for this, the fibers are placed or passed through a metallization bath, in which there are copper ions in a mixture with formaldehyde (catalyst), the copper concentration in these cases is diverse, but the more preferable copper concentration is 1-5 g / l, the fibers in the bath is moderately stirred for 10-20 minutes for active metallization, if the speed suddenly decreases, then formaldehyde, a pH-correcting alkaline solution and a solution with copper ions are added to the bath. All this is carried out at various temperatures from 10 to 60 ° C, but more preferably 20-40 ° C, after which the metallized fibers are removed from the bath.
  • a metallization bath in which there are copper ions in a mixture with formaldehyde (catalyst)
  • the copper concentration in these cases is diverse, but the more preferable copper concentration is 1-5 g / l
  • the fibers in the bath is moderately stirred for 10-20 minutes for active
  • the method is carried out under similar conditions, only after etching is the washing of a solution of tin chloride and hydrochloric acid used, and a mixture of silver nitrate and ammonia is used in the metallization stage.
  • metallization is carried out with nickel, and with cobalt, and with other metals.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention se rapporte au domaine des matériaux en couches à l'épreuve des balles qui sont faits de tissus balistiques possédant des propriétés de blindage, et peut être utilisée lors de la production de moyens de protection de masse. Cette bande de blindage anti-éclats comprend un maillage capable de résister au maximum à des éclats, et d'interdire le déclenchement d'un dispositif explosif radiocommandé. Le maillage est réalisé selon le principe d'une cage de Faraday en calculant le blindage le plus efficace contre un rayonnement électromagnétique dans une plage de 20 MHz à 6 GHz. En outre, la fibre du maillage est faite de fibre d'aramide métallisée par des ions de métaux lourds.
PCT/RU2021/050044 2020-02-24 2021-02-23 Bande de blindage anti-éclats WO2021173042A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
RU2020107954 2020-02-24
RU2020107954A RU2756749C2 (ru) 2020-02-24 2020-02-24 Способ изготовления противоосколочного экранирующего полотна
RU2020107955 2020-02-24
RU2020107955 2020-02-24

Publications (1)

Publication Number Publication Date
WO2021173042A1 true WO2021173042A1 (fr) 2021-09-02

Family

ID=77491793

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2021/050044 WO2021173042A1 (fr) 2020-02-24 2021-02-23 Bande de blindage anti-éclats

Country Status (1)

Country Link
WO (1) WO2021173042A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114705084A (zh) * 2022-05-07 2022-07-05 湖南中泰特种装备有限责任公司 电磁屏蔽超高分子量聚乙烯防弹板的制备方法和防弹板

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2237846C2 (ru) * 2001-11-22 2004-10-10 Общество с ограниченной ответственностью "Научно-производственное объединение специальных материалов" Защитная структура противоосколочного покрывала с нетканым материалом
EP1637828A2 (fr) * 2004-09-20 2006-03-22 Lockheed Martin Corporation Tissu présentant une résistance aux balles améliorée
US20070245441A1 (en) * 2004-07-02 2007-10-25 Andrew Hunter Armour
WO2010019612A2 (fr) * 2008-08-11 2010-02-18 Greenhill Antiballistics Corporation Structure de particules compacte
RU2706651C2 (ru) * 2015-03-10 2019-11-19 Аркема Франс Термопластичные состав и препрег, композиционный материал на основе указанного препрега и применения указанного композиционного материала

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2237846C2 (ru) * 2001-11-22 2004-10-10 Общество с ограниченной ответственностью "Научно-производственное объединение специальных материалов" Защитная структура противоосколочного покрывала с нетканым материалом
US20070245441A1 (en) * 2004-07-02 2007-10-25 Andrew Hunter Armour
EP1637828A2 (fr) * 2004-09-20 2006-03-22 Lockheed Martin Corporation Tissu présentant une résistance aux balles améliorée
WO2010019612A2 (fr) * 2008-08-11 2010-02-18 Greenhill Antiballistics Corporation Structure de particules compacte
RU2706651C2 (ru) * 2015-03-10 2019-11-19 Аркема Франс Термопластичные состав и препрег, композиционный материал на основе указанного препрега и применения указанного композиционного материала

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114705084A (zh) * 2022-05-07 2022-07-05 湖南中泰特种装备有限责任公司 电磁屏蔽超高分子量聚乙烯防弹板的制备方法和防弹板
CN114705084B (zh) * 2022-05-07 2023-10-24 湖南中泰特种装备有限责任公司 电磁屏蔽超高分子量聚乙烯防弹板的制备方法和防弹板

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