CN114701210A - Explosion-proof clothes and fabric thereof and preparation method - Google Patents
Explosion-proof clothes and fabric thereof and preparation method Download PDFInfo
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- CN114701210A CN114701210A CN202210320482.3A CN202210320482A CN114701210A CN 114701210 A CN114701210 A CN 114701210A CN 202210320482 A CN202210320482 A CN 202210320482A CN 114701210 A CN114701210 A CN 114701210A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2571/00—Protective equipment
- B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The invention discloses explosion-proof clothes, fabric thereof and a preparation method. The explosion-proof clothes fabric uses the amorphous high molecular polymer fiber, and has stronger protective performance compared with the traditional crystalline polymer fiber. The silver-plated fiber is used in the buffer layer, so that the anti-static anti-explosion garment can provide certain conductivity while providing the functions of sterilization and odor prevention for the anti-explosion garment. In addition, the polyurea polymer is used as the impact resistant layer, so that the energy released in the explosion process can be effectively absorbed, the buffer effect is achieved, and in addition, the density of the polyurea polymer can be effectively reduced while the porous structure of the impact resistant layer further plays a buffer effect, so that the polyurea polymer is lighter.
Description
The application is a divisional application with the application date of 2021, 10 and 22 months and the application number of CN202111236168.9, namely explosion-proof clothes, fabrics thereof and a preparation method.
Technical Field
The invention relates to the field of special protective devices, in particular to explosion-proof clothes, fabric thereof and a preparation method.
Background
The high-performance organic fiber and the composite material thereof have the mechanical characteristics of high strength and high toughness and the penetration resistance mechanism different from that of metal materials, and have important application in equipment such as body armor, explosion-proof clothes, bulletproof helmets, composite armor and the like, and the key for improving the protection capability of the equipment is to continuously improve the strength and the toughness of the fiber. For example, the American KM2 type aramid fiber is a typical representative of high strength, medium modulus and high toughness, but the fiber severely limits the export of China.
At present, the high-performance organic fiber for special protection is mainly prepared from crystalline polymers, such as para-aramid fiber, aramid III fiber and the like. Although these materials are widely used in protective equipment with excellent properties, they still have certain disadvantages. For example, the inherent characteristics of the aramid fiber such as ultraviolet resistance and environmental aging seriously affect the service life of the equipment; although the aramid III fiber has high strength, the modulus is also high, so that the toughness improvement space is limited, and the energy absorption efficiency is not further improved.
The information in this background is only for the purpose of illustrating the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
In order to further improve the protection performance of the explosion-proof clothes, the invention provides the fabric for the explosion-proof clothes, the explosion-proof clothes and the preparation method thereof. Specifically, the present invention includes the following.
In a first aspect of the present invention, there is provided an explosion-proof clothing fabric, comprising, in order from inside to outside in a thickness direction, a buffer layer, an impact-resistant layer, and a protective layer, wherein: the cushioning layer comprises a fabric layer made of silver-plated fibers, the impact resistant layer comprises porous polymer molecules, and the protective layer comprises high-strength heat-resistant amorphous polymer fibers.
According to the fabric for the explosion-proof clothes, preferably, the fabric layer of the buffer layer is woven by silver-plated fibers or is woven by mixed fiber bundles of the silver-plated fibers and other fibers.
According to the fabric for explosion-proof clothing, the tensile strength of the high-strength heat-resistant amorphous polymer fiber under the quasi-static condition is preferably more than 3.4GPa, and preferably more than 3.5 GPa. The high strength heat resistant amorphous polymer fiber has a breaking strength of 5.0GPa or more, preferably 5.1GPa or more, at a strain rate of 900/s.
According to the fabric for explosion-proof clothes, preferably, the high-strength heat-resistant amorphous polymer fiber is mainly prepared from biphenyltetracarboxylic dianhydride and/or pyromellitic dianhydride, and optionally, quinazoline is further introduced into the amorphous polymer fiber. The strength of the fiber can be further improved by introducing a quinazoline structure, and the strength can reach more than 4.0 GPa.
According to the fabric for explosion-proof clothes, the porous polymer molecules preferably comprise polyurea high molecular materials.
According to the fabric for explosion-proof clothes of the present invention, preferably, the impact-resistant layer includes a flame retardant.
In a second aspect of the invention, there is provided explosion-proof clothing comprising the fabric for explosion-proof clothing of the first aspect.
According to the explosion-proof suit provided by the invention, the explosion-proof suit is preferably worn by operators during air force airport unexploded bomb removing operation.
In a third aspect of the invention, a method for preparing an explosion-proof garment is provided, wherein the method involves a step of manufacturing a garment body by using the fabric for an explosion-proof garment according to the first aspect.
The explosion-proof clothes fabric uses the amorphous high molecular polymer fiber, and has stronger protective performance compared with the traditional crystalline polymer fiber. The silver-plated fiber is used on the buffer layer, so that the sterilization and odor prevention effects are provided, and meanwhile, certain conductivity can be provided, and the static defect is avoided. In addition, the polyurea polymer is used as the impact resistant layer, so that the energy released in the explosion process can be effectively absorbed, the buffer effect is achieved, and the density of the polyurea polymer can be effectively reduced while the porous structure further plays a buffer effect, so that the polyurea polymer is lighter.
Drawings
FIG. 1 mechanical properties of the protective layer fiber of example 1 under high strain rate conditions.
FIG. 2 mechanical properties of the protective layer fiber of comparative example 1 under high strain rate conditions.
FIG. 3 mechanical properties of the protective layer fiber of comparative example 2 under high strain rate conditions.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that the upper and lower limits of the range, and each intervening value therebetween, is specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control. Unless otherwise indicated, "%" is percent by weight.
The fabric for the explosion-proof clothes comprises a buffer layer, an impact-resistant layer and a protective layer from inside to outside in sequence along the thickness direction. The respective structures are explained in detail below.
Buffer layer
The buffer layer of the invention comprises silver-plated fibers, thereby providing certain conductivity, preventing static electricity and simultaneously providing sterilization and odor removal functions. The cushioning layer may be woven from silvered fibres, in which case it is preferred that the cushioning layer comprises a plurality of fabric layers woven from silvered fibres.
To reduce the conductivity of the buffer layer, it is preferred that the buffer layer comprises a braid of silver-plated fibers and other fibers. The silver-plated fiber and other fibers can be mixed fiber bundles consisting of the silver-plated fiber and the other fibers, and then the mixed fiber bundles are woven to obtain the fabric, or the fabric can be obtained by taking the silver-plated fiber as a warp and the other fibers as a weft, or the fabric can be obtained by taking the silver-plated fiber as a weft and the other fibers as a warp.
In the present invention, the cushioning layer further comprises a separate hydrophilic fabric layer, and optionally, the silver-plated fiber of the present invention is a hydrophilic modified fiber, thereby improving wearing comfort. Also preferably, the cushioning layer further comprises a layer of plant cotton material.
Impact resistant layer
The impact-resistant layer comprises the polyurea high polymer material which has an excellent effect of absorbing explosion energy, and the polyurea high polymer material is preferably designed into a porous structure, so that the energy absorption performance of the material is greatly improved through the porous structure. To improve the ability of the blast-resistant garment to protect workers from possible flash fires, it is optional to further include a flame retardant.
Protective layer
The protective layer of the present invention comprises high strength heat resistant amorphous polymer fibers, preferably, no crystalline polymer fibers. Compared with crystalline polymer fibers, amorphous polymer fibers have more excellent tensile strength and fracture energy absorption effect, so that the amorphous polymer fibers are more suitable for serving as materials of the anti-explosion clothing fabric. The reason for this may be that the segmental motion of amorphous polymers is stronger than that of crystalline polymers. Before the instant molecular chain fracture occurs in high-speed strain, the segmental motion forced by high stress can provide an additional energy absorption and dissipation channel for the fiber, so that the amorphous fiber shows more excellent tensile strength and fracture energy absorption effect under the condition of high strain rate.
Example 1
This embodiment provides an explosion-proof clothes fabric, includes buffer layer, shock-resistant layer and protective layer from inside to outside in proper order along thickness direction, wherein: the cushioning layer comprises a plurality of fabric layers woven from silver-plated fibers. The impact resistant layer comprises a molecular layer of porous polyurea elastomer with a thickness of 1-3 mm. The protective layer is biphenyl amorphous polymer fiber (a-BPDA-PI). As shown in Table 1 and FIG. 1, the tensile strength was 3.5GPa under quasi-static conditions, and the breaking strength of the high-strength heat-resistant amorphous polymer fiber was 5.2GPa at a strain rate of 900/s.
Example 2
This embodiment provides an explosion-proof clothes fabric, includes buffer layer, shock-resistant layer and protective layer from inside to outside in proper order along thickness direction, wherein: the cushioning layer comprises a plurality of fabric layers woven from silver-plated fibers. The impact resistant layer comprises a molecular layer of porous polyurea elastomer with a thickness of 1-3 mm. The protective layer is a homopolybenzene type amorphous polymer fiber. As shown in Table 1, the tensile strength was 3.6GPa under quasi-static conditions, and the breaking strength of the high-strength heat-resistant amorphous polymer fiber was 5.1GPa at a strain rate of 900/s.
Example 3
This embodiment provides an explosion-proof clothes fabric, includes buffer layer, shock-resistant layer and protective layer from inside to outside in proper order along thickness direction, wherein: the cushioning layer comprises a plurality of fabric layers woven from silver-plated fibers. The impact resistant layer comprises a molecular layer of porous polyurea elastomer with a thickness of 1-3 mm. The protective layer is a pyromellitic amorphous polymer fiber (with quinazoline introduced). As shown in Table 1, the tensile strength was 4.1GPa under quasi-static conditions, and the breaking strength of the high-strength heat-resistant amorphous polymer fiber was 5.7GPa at a strain rate of 900/s.
Example 4
This embodiment provides an explosion-proof clothes fabric, includes buffer layer, shock-resistant layer and protective layer from inside to outside in proper order along thickness direction, wherein: the cushioning layer comprises a plurality of fabric layers woven from silver-plated fibers. The impact resistant layer comprises a molecular layer of porous polyurea elastomer with a thickness of 1-3 mm. The protective layer is a mixed amorphous polymer fiber. As shown in Table 1, the tensile strength was 3.5GPa under quasi-static conditions, and the breaking strength of the high-strength heat-resistant amorphous polymer fiber was 5.3GPa at a strain rate of 900/s. The mixed amorphous polymer fiber is obtained by copolymerizing 1,2,3, 4-biphenyltetracarboxylic dianhydride and pyromellitic dianhydride.
Comparative example 1
This embodiment provides an explosion-proof clothes fabric, includes buffer layer, shock-resistant layer and protective layer from inside to outside in proper order along thickness direction, wherein: the cushioning layer comprises a plurality of fabric layers woven from silver-plated fibers. The impact resistant layer comprises a molecular layer of porous polyurea elastomer with a thickness of 1-3 mm. The protective layer is a crystalline polymer fiber (PPTA). As shown in Table 1 and FIG. 2, the tensile strength was 3.1GPa under quasi-static conditions, and the breaking strength of the high-strength heat-resistant amorphous polymer fiber was 4.1GPa at a strain rate of 900/s.
Comparative example 2
This embodiment provides an explosion-proof clothes fabric, includes buffer layer, shock-resistant layer and protective layer from inside to outside in proper order along thickness direction, wherein: the cushioning layer comprises a plurality of fabric layers woven from silver-plated fibers. The impact resistant layer comprises a molecular layer of porous polyurea elastomer with a thickness of 1-3 mm. The protective layer is crystalline polymer fiber (aramid fiber III). As shown in Table 1 and FIG. 3, the tensile strength was 4.1GPa under quasi-static conditions, and the breaking strength of the high-strength heat-resistant amorphous polymer fiber was 5.3GPa at a strain rate of 900/s.
Test example
This example is an example of the ballistic performance test of different fabrics. The test standard is GJB 4300A-2012. Specifically, the fabric has an areal density of 200g/m2(Single layer) using 24 layers of fabric at 4.8kg/m2Test specimen areal density. As can be seen from the data in Table 1, examples 1-4 all had higher V50 values than comparative examples 1 and 2, indicating superior barrier performance.
In addition, it can also be seen from the data of table 1 that the biphenyl amorphous polymer fiber of example 1 has stronger stress at break and barrier properties than the pyromellitic amorphous polymer fiber of example 2. The strength of the fibers can be greatly improved when quinazoline is introduced into the amorphous polymer of example 2, and even the strength can be made larger than that of the biphenyl amorphous polymer fibers of example 1. In addition, although the aramid iii crystalline polymer fiber of comparative example 2 has high strength, the protective property is relatively strong, probably due to poor energy-absorbing effect.
It is also seen from table 1 that the strength of the hybrid amorphous polymer fiber of example 4 is slightly increased, but the barrier properties are higher, compared to the amorphous polymer fibers of examples 1 and 2.
TABLE 1
| Quasi-static fracture stress/GPa | Stress at break at 900/s/GPa | Protective performance V50/m/s | |
| Example 1 | 3.5 | 5.2 | 560.3 |
| Example 2 | 3.3 | 5.1 | 558.2 |
| Example 3 | 4.1 | 5.7 | 573.1 |
| Example 4 | 3.5 | 5.3 | 565.1 |
| Comparative example 1 | 3.1 | 4.1 | 538.4 |
| Comparative example 2 | 4.1 | 5.3 | 548.9 |
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Many modifications and variations may be made to the exemplary embodiments of the present description without departing from the scope or spirit of the present invention. The scope of the claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.
Claims (10)
1. The utility model provides an explosion-proof clothes fabric which characterized in that, includes buffer layer, impact resistance layer and protective layer from inside to outside in proper order along thickness direction, wherein: the buffer layer comprises a fabric layer made of silver-plated fibers, the impact-resistant layer comprises a porous polymer molecular layer, and the protective layer comprises high-strength heat-resistant amorphous polymer fibers.
2. The fabric for blast-proof clothes according to claim 1, wherein the fabric layer of the cushion layer is woven by silver-plated fibers or woven by mixed fibers of silver-plated fibers and other fibers.
3. The fabric for blast-resistant clothing according to claim 1, wherein said high-strength heat-resistant amorphous polymer fiber has a tensile strength of 3.4GPa or more under quasi-static conditions, and a breaking strength of 5.1GPa or more at a strain rate of 900/s.
4. The fabric for blast resistant clothing according to claim 3, wherein said high strength heat resistant amorphous polymer fiber is mainly composed of biphenyltetracarboxylic dianhydride and/or is mainly composed of pyromellitic dianhydride.
5. The fabric for blast-resistant clothing according to claim 4, wherein said high-strength heat-resistant amorphous polymer fiber further incorporates quinazoline.
6. The fabric for blast-resistant clothing according to claim 1, wherein the porous polymer molecules comprise polyurea polymer material.
7. The fabric for blast-resistant clothing according to claim 6, wherein the impact-resistant layer further comprises a flame retardant.
8. Blast-resistant garment, characterized in that it comprises a fabric for a blast-resistant garment according to any one of claims 1 to 7.
9. The blast-resistant suit according to claim 8, which is worn by an operator during a work for removing unexploded bombs at an airport.
10. A method for manufacturing explosion-proof clothes, characterized in that the fabric for explosion-proof clothes according to any one of claims 1-7 is used for manufacturing a clothes body.
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| CN202210320482.3A CN114701210B (en) | 2021-10-22 | 2021-10-22 | Explosion-proof clothes and fabric thereof and preparation method |
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| CN202111236168.9A CN113954445B (en) | 2021-10-22 | 2021-10-22 | Explosion-proof clothes and fabric thereof and preparation method |
| CN202210320482.3A CN114701210B (en) | 2021-10-22 | 2021-10-22 | Explosion-proof clothes and fabric thereof and preparation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914819A (en) * | 2010-07-30 | 2010-12-15 | 北京化工大学 | Polyimide fiber containing quinazoline structure and preparation method thereof |
| CN103799082A (en) * | 2012-11-06 | 2014-05-21 | 赵平宝 | Conductive and antibacterial clothes provided with cut-resistant pocket |
| CN110645863A (en) * | 2019-09-17 | 2020-01-03 | 北京理工大学 | Novel explosion-proof blanket composite fence structure |
| CN112179231A (en) * | 2020-06-15 | 2021-01-05 | 北京理工大学 | Protection equipment, system and method for destroying unexploded bombs/explosives |
| CN113211897A (en) * | 2021-05-19 | 2021-08-06 | 广东电网有限责任公司 | Wrapped flexible fireproof explosion-proof blanket and preparation method and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7665149B2 (en) * | 2008-05-14 | 2010-02-23 | E.I. Du Pont De Nemours And Company | Ballistic resistant body armor articles |
| WO2018075108A1 (en) * | 2016-07-15 | 2018-04-26 | VICIS, Inc. | Impacting absorbing structures in body protective equipment |
| CN106903947B (en) * | 2017-03-15 | 2018-10-19 | 卜庆革 | For Military Electronics confrontation, the high shield effectiveness lightweight soft material of decoy, tent, electromagnetic shielding chamber |
| CN109443093B (en) * | 2018-11-28 | 2020-06-12 | 江南大学 | Multilayer bulletproof member and preparation method and application thereof |
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2021
- 2021-10-22 CN CN202111236168.9A patent/CN113954445B/en active Active
- 2021-10-22 CN CN202210320482.3A patent/CN114701210B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914819A (en) * | 2010-07-30 | 2010-12-15 | 北京化工大学 | Polyimide fiber containing quinazoline structure and preparation method thereof |
| CN103799082A (en) * | 2012-11-06 | 2014-05-21 | 赵平宝 | Conductive and antibacterial clothes provided with cut-resistant pocket |
| CN110645863A (en) * | 2019-09-17 | 2020-01-03 | 北京理工大学 | Novel explosion-proof blanket composite fence structure |
| CN112179231A (en) * | 2020-06-15 | 2021-01-05 | 北京理工大学 | Protection equipment, system and method for destroying unexploded bombs/explosives |
| CN113211897A (en) * | 2021-05-19 | 2021-08-06 | 广东电网有限责任公司 | Wrapped flexible fireproof explosion-proof blanket and preparation method and application thereof |
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| Publication number | Publication date |
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| CN113954445B (en) | 2022-04-22 |
| CN113954445A (en) | 2022-01-21 |
| CN114701210B (en) | 2023-01-13 |
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