WO2019151962A2 - Armor fabric comprising shear-thickening fluid with protectiveness increasing ceramic powder - Google Patents
Armor fabric comprising shear-thickening fluid with protectiveness increasing ceramic powder Download PDFInfo
- Publication number
- WO2019151962A2 WO2019151962A2 PCT/TR2018/050762 TR2018050762W WO2019151962A2 WO 2019151962 A2 WO2019151962 A2 WO 2019151962A2 TR 2018050762 W TR2018050762 W TR 2018050762W WO 2019151962 A2 WO2019151962 A2 WO 2019151962A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shear
- armor
- protectiveness
- ceramic powder
- armor fabric
- Prior art date
Links
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
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
-
- 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
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0414—Layered armour containing ceramic material
-
- 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
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
-
- 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
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0492—Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix
Definitions
- the present invention relates to increase protectiveness performance of armor fabric by adding shear-thickening fluids with ceramic powder to armor fabrics.
- Shear-thickening fluids are non-Newtonian materials, and they are prepared as suspension by adding nano or micron sized hard particles into an unreacted liquid medium. These fluids solidify by increasing their viscosity when a force is applied thereon.
- United States Patent document no US7498276 B l an application known in the state of the art, discloses improving protectiveness of armors by impregnating shear thickening fluids into armor fabrics in order to benefit from solidification property of these fluids.
- steel vest produced in this way the solidification of shear-thickening fluids plays a role in absorbing threat energy. Therefore, these fluids are included into the armor fabrics as an energy absorbing reinforcing material.
- the steel vests obtained from conventional armor fabrics have very thick and hard structure, and therefore they cause movement limitations in the user.
- the use of shear-thickening fluids with armor fabrics increases protectiveness performance.
- the objective of the present invention is to increase energy absorption performance by also adding ceramic powders to the system. Ceramic powders are main component of the ceramic armors, and they are commonly used in energy absorption applications. Furthermore, addition of ceramic powders to shear-thickening fluids also increases the viscosity values of the said fluids. Therefore, the use of ceramic powders additives with shear-thickening fluid impregnated armor fabrics will increase energy absorbing property. By this means, steel vest with higher protectiveness can be obtained by using less armor fabric. By means of armor layers with smaller numbers, the users will have more flexible steel vest without comprising the protectiveness property.
- the present invention relates to the addition of an unreacted liquid medium (1), nano- or micron-sized hard particles (2), and shear-thickening fluids obtained from ceramic powder (3) to armor fabrics (4).
- nano or micron sized hard particles (2) are added into an unreacted liquid medium (1) and mixed.
- the mixing ratio is selected in range of 10-70% (by weight) of the nano or micron sized hard particles (2).
- Ethyl alcohol in ratio of 50% is added into the mixture in order to make mixing process easier.
- the ceramic powder (3) is added to the mixture and mixed. Mechanical or ultrasonic mixers are preferred in mixing process.
- the armor fabric (4) is immersed into the obtained mixture and waited for a minute. Then the excess mixture is filtered by passing through a cylinder. The armor fabric (4) is waited in open air for a day in order to vaporize the ethyl alcohol in the mixture. After this waiting period, the ceramic powder added shear-thickening fluid is impregnated to the armor fabric (4).
- the Industrial Applicability of the Invention can be applicable in steel vest products. It can be extended to the defense industry for the use of security guards and military personnel.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The present invention relates to increase protectiveness performance of armor fabric by adding shear-thickening fluids with ceramic powder to armor fabrics. The invention is characterized in that ceramic powders (3) is added into shear-thickening fluids comprising nano or micron sized hard particles (2) by means of an unreacted liquid medium (1), and this suspension is impregnated into the armor fabric (4), and thus the protectiveness feature of the armor fabric (4) is improved. Therefore, shear- thickening fluid with ceramic powder is used for a better protectiveness performance, and steel vests with armor fabric layers in smaller numbers can be produced, and thus more flexible products providing movement comfort can be obtained.
Description
ARMOR FABRIC COMPRISING SHEAR-THICKENING FLUID WITH PROTECTIVENESS INCREASING CERAMIC POWDER
Field of the Invention The present invention relates to increase protectiveness performance of armor fabric by adding shear-thickening fluids with ceramic powder to armor fabrics.
Background of the Invention
Conventional steel vests are obtained by preparing armor fabrics with a plurality of layers. Shear-thickening fluids are non-Newtonian materials, and they are prepared as suspension by adding nano or micron sized hard particles into an unreacted liquid medium. These fluids solidify by increasing their viscosity when a force is applied thereon.
United States Patent document no US7498276 B l, an application known in the state of the art, discloses improving protectiveness of armors by impregnating shear thickening fluids into armor fabrics in order to benefit from solidification property of these fluids. In steel vest produced in this way, the solidification of shear-thickening fluids plays a role in absorbing threat energy. Therefore, these fluids are included into the armor fabrics as an energy absorbing reinforcing material. In this abovementioned invention, there are no ceramic powders, and thus it is possible to enhance protectiveness properties by including ceramic powders into the structure.
Technical problems aimed to be solved with the invention
The steel vests obtained from conventional armor fabrics have very thick and hard structure, and therefore they cause movement limitations in the user. The use of shear-thickening fluids with armor fabrics increases protectiveness performance. The objective of the present invention is to increase energy absorption performance by
also adding ceramic powders to the system. Ceramic powders are main component of the ceramic armors, and they are commonly used in energy absorption applications. Furthermore, addition of ceramic powders to shear-thickening fluids also increases the viscosity values of the said fluids. Therefore, the use of ceramic powders additives with shear-thickening fluid impregnated armor fabrics will increase energy absorbing property. By this means, steel vest with higher protectiveness can be obtained by using less armor fabric. By means of armor layers with smaller numbers, the users will have more flexible steel vest without comprising the protectiveness property.
Description of the Drawings Figure -1 The microscopic view of the shear-thickening fluid.
Figure -2 The view of the armor fabric
The Definition of Components Illustrated With Reference Numerals in the Drawings
1 : Unreacted liquid medium 2: Nano or micron sized hard particles
3: Ceramic powder particles 4: Armor fabric
Summary of the Invention
The present invention relates to the addition of an unreacted liquid medium (1), nano- or micron-sized hard particles (2), and shear-thickening fluids obtained from ceramic powder (3) to armor fabrics (4). In order to prepare shear-thickening fluids, nano or micron sized hard particles (2) are added into an unreacted liquid medium (1) and mixed. The mixing ratio is selected in range of 10-70% (by weight) of the nano or micron sized hard particles (2). Ethyl alcohol in ratio of 50% is added into the
mixture in order to make mixing process easier. After homogeneously dispersing the nano or micron sized hard particles (2), the ceramic powder (3) is added to the mixture and mixed. Mechanical or ultrasonic mixers are preferred in mixing process. The armor fabric (4) is immersed into the obtained mixture and waited for a minute. Then the excess mixture is filtered by passing through a cylinder. The armor fabric (4) is waited in open air for a day in order to vaporize the ethyl alcohol in the mixture. After this waiting period, the ceramic powder added shear-thickening fluid is impregnated to the armor fabric (4).
The Industrial Applicability of the Invention The present invention can be applicable in steel vest products. It can be extended to the defense industry for the use of security guards and military personnel.
Claims
1. An armor fabric (4), which is produced by impregnating shear-thickening fluids comprising nano or micron sized hard particles (2) by means of an unreacted liquid medium (1), characterized in that it comprises ceramic powder (3).
2. An armor fabric (4) according to claim 1, characterized in that the ceramic powder (3) is added into the system while the shear-thickening fluids are being produced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2017/19607 | 2017-12-05 | ||
| TR201719607 | 2017-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2019151962A2 true WO2019151962A2 (en) | 2019-08-08 |
| WO2019151962A3 WO2019151962A3 (en) | 2020-02-20 |
Family
ID=67479388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2018/050762 WO2019151962A2 (en) | 2017-12-05 | 2018-12-05 | Armor fabric comprising shear-thickening fluid with protectiveness increasing ceramic powder |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2019151962A2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7226878B2 (en) * | 2003-05-19 | 2007-06-05 | The University Of Delaware | Advanced body armor utilizing shear thickening fluids |
| DE602005005059D1 (en) * | 2005-05-13 | 2008-04-10 | Protectron Nanocomposites Pte | IMPROVED COLLOIDAL GEL FOR PROTECTIVE TEXTILE SURFACE IMAGES, IMPROVED PROTECTIVE TEXTILE SURFACE PATTERNS AND MANUFACTURING METHOD THEREFOR |
| WO2011031314A2 (en) * | 2009-09-11 | 2011-03-17 | Novak Herman J | Bullet-proof holster and ballistic pouch |
| US20140212598A1 (en) * | 2013-01-26 | 2014-07-31 | UVR Defense Tech. Ltd. | Protection and performance improvements of fabrics through nanotechnology |
-
2018
- 2018-12-05 WO PCT/TR2018/050762 patent/WO2019151962A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019151962A3 (en) | 2020-02-20 |
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