CN114705085B - Preparation method of ultra-high molecular weight polyethylene fiber bulletproof plate and bulletproof plate - Google Patents

Preparation method of ultra-high molecular weight polyethylene fiber bulletproof plate and bulletproof plate Download PDF

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Publication number
CN114705085B
CN114705085B CN202210493342.6A CN202210493342A CN114705085B CN 114705085 B CN114705085 B CN 114705085B CN 202210493342 A CN202210493342 A CN 202210493342A CN 114705085 B CN114705085 B CN 114705085B
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polyethylene fiber
ultra
molecular weight
high molecular
bulletproof plate
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CN114705085A (en
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杨恒
高波
吴传清
林明清
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Hunan Zhongtai Special Equipment Co Ltd
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Hunan Zhongtai Special Equipment Co Ltd
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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
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • 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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/105—Metal
    • B32B2264/1056—Iron or steel
    • 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
    • B32B2307/212—Electromagnetic interference shielding

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Textile Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The invention belongs to the technical field of ultra-high molecular weight polyethylene fibers, and particularly relates to a preparation method of an ultra-high molecular weight polyethylene fiber bulletproof plate and the bulletproof plate; coating aqueous polyurethane adhesive on the surface of polyethylene fiber laid cloth, then laying a mixture of magnetite powder and cellulose fiber on the surface of the polyethylene fiber laid cloth, controlling the temperature to be 65-75 ℃ and the humidity to be 30-45%, and pressing the multi-layer polyethylene fiber laid cloth after a period of treatment to obtain the ultra-high molecular weight polyethylene fiber bulletproof plate; the invention ensures bulletproof and has higher electromagnetic shielding effect.

Description

Preparation method of ultra-high molecular weight polyethylene fiber bulletproof plate and bulletproof plate
Technical Field
The invention belongs to the technical field of ultra-high molecular weight polyethylene fibers, and particularly relates to a preparation method of an ultra-high molecular weight polyethylene fiber bulletproof plate and the bulletproof plate.
Background
The ultra-high molecular weight polyethylene (UHMW-PE) is a thermoplastic engineering plastic with a linear structure and excellent comprehensive performance, the strength is as high as 30.8cN/dtex, the specific strength is the highest in chemical fiber, and the ultra-high molecular weight polyethylene (UHMW-PE) has better excellent performances of wear resistance, impact resistance, corrosion resistance, light resistance and the like. It can be directly made into ropes, cables, fishing nets and various fabrics: bulletproof vests, clothes, cutting-proof gloves and the like, wherein the bulletproof effect of the bulletproof vests is better than that of aramid fibers.
CN102277728A discloses a preparation method of conductive ultra-high molecular weight polyethylene fiber, wherein a conventional preparation method of conductive fiber or antistatic fiber is given in the background art, which comprises doping conductive substance, surface coating or adsorbing conductive substance, surface plating metal, the preparation method of the above patent is:
soaking the ultra-high molecular weight polyethylene fiber in an acetone, ethanol or tetrahydrofuran solution, ultrasonically washing, rinsing with deionized water, naturally airing at normal temperature, or vacuum drying at 20-100 ℃;
step (2) preparing an activation solution: dissolving dopamine substances in a buffer solution to prepare an activation solution with the concentration of the dopamine substances of 0.001-0.1 mol/L;
step (3), placing the washed ultra-high molecular weight polyethylene fibers into a reaction vessel, adding excessive activating solution, and activating under stirring;
the step (4) is to prepare a chemical silver plating solution, and the specific steps are as follows: (1) preparing silver liquid: adding silver salt into deionized water according to the proportion of 0.02-0.4 mol per liter of deionized water, and dropwise adding concentrated ammonia water while stirring until the precipitate is completely dissolved; (2) preparing a reducing solution: adding a reducing agent into deionized water according to the proportion of 0.02-1 mol per liter of deionized water; (3) uniformly mixing silver solution and reducing solution according to a volume ratio of 1:1, namely preparing the chemical silver plating solution;
and (5) immersing the activated ultra-high molecular weight polyethylene fibers into plating solution for 0.5-10 hours at the temperature of 10-60 ℃ to finish silver plating.
The silver liquid is used in the scheme, and the cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of an ultra-high molecular weight polyethylene fiber bulletproof plate and the bulletproof plate, which have higher electromagnetic shielding effectiveness while guaranteeing bulletproof performance.
The invention relates to a preparation method of an ultra-high molecular weight polyethylene fiber bulletproof plate, which comprises the following steps,
coating aqueous polyurethane adhesive on the surface of polyethylene fiber laid cloth, then laying a mixture of magnetite powder and cellulose fiber on the surface of the polyethylene fiber laid cloth, controlling the temperature to be 65-75 ℃ and the humidity to be 30-45%, and after a period of treatment, pressing a plurality of layers of polyethylene fiber laid cloth (preferably 100-110 layers) to obtain the ultra-high molecular weight polyethylene fiber bulletproof plate.
Preferably, the solid content of the aqueous polyurethane adhesive is 30-45%, and the pH value is 7-9.
Preferably, the weight ratio of the magnetite powder to the cellulose fibers is 2-3:7-8.
Preferably, the total weight of the magnetite powder and the cellulose fiber is 10-30% of the weight of the polyethylene fiber laid fabric.
Preferably, the temperature is controlled to be 65-75 ℃, the humidity is controlled to be 30-45%, and the treatment time is controlled to be 20-30min.
Preferably, the pressing temperature is 100-110 ℃ and the pressing pressure is 20-25MPa.
Preferably, the pressing time is 1 to 1.5 hours.
The invention provides an ultra-high molecular weight polyethylene fiber bulletproof plate, which is prepared by adopting the preparation method.
The invention has the beneficial effects that the magnet mineral powder and the cellulose are paved on the surface of the polyethylene fiber laid cloth and then are treated in a constant temperature and humidity device, so that the electromagnetic shielding effectiveness of the product is effectively improved, and the electromagnetic shielding effectiveness of the bulletproof plate prepared by the method is more than 80dB within the range of 20MHz-2 GHz.
Detailed Description
Example 1
A method for preparing an ultra-high molecular weight polyethylene fiber bulletproof plate comprises the following steps,
1. cutting the high-strength high-modulus polyethylene fiber non-woven cloth (the non-woven cloth with the strength value being more than 35cN/dTex and the modulus value being more than 1300 cN/dTex) according to the corresponding size, determining the number of layers according to the bulletproof requirement, and coating a high-viscosity aqueous polyurethane adhesive on the surface of each layer of the high-strength high-modulus polyethylene fiber non-woven cloth, wherein the solid content range of the high-viscosity aqueous polyurethane adhesive is 30%, and the pH range is 9.
2. Magnetite powder and cellulose fiber (magnetite powder is from Hebei aviation mineral products Co., ltd., cellulose fiber is viscose) are mixed according to the mass ratio of 2:8, mixing, namely uniformly mixing the magnetite powder and the cellulose fiber with the total mass of 15% of the mass of the high-strength high-modulus polyethylene fiber non-woven cloth, and uniformly laying the mixture on the surface of the high-strength high-modulus polyethylene fiber non-woven cloth obtained in the step 1.
3. The high-strength high-modulus polyethylene fiber laid cloth prepared by the method is placed in a constant temperature and humidity box, the temperature is 65 ℃, the humidity is 45%, and the time is 20min.
4. And (3) placing 100 layers of high-strength high-modulus polyethylene fiber laid cloth in a pressing die, wherein the temperature is 100 ℃, the pressure is 20Mpa, and the time is 1.5h.
5. And taking out the electromagnetic shielding bulletproof plate after the pressing time is finished, and performing corner polishing treatment to obtain the ultra-high molecular weight polyethylene fiber bulletproof plate.
Example 2
A method for preparing an ultra-high molecular weight polyethylene fiber bulletproof plate comprises the following steps,
1. cutting the high-strength high-modulus polyethylene fiber non-woven cloth (the non-woven cloth with the strength value being more than 35cN/dTex and the modulus value being more than 1300 cN/dTex) according to the corresponding size, determining the number of layers according to the bulletproof requirement, and coating a high-viscosity aqueous polyurethane adhesive on the surface of each layer of the high-strength high-modulus polyethylene fiber non-woven cloth, wherein the solid content range of the high-viscosity aqueous polyurethane adhesive is 45%, and the pH range is 7.
2. Magnetite powder and cellulose fiber (magnetite powder is from Hebei aviation mineral products Co., ltd., cellulose fiber is viscose) are mixed according to a mass ratio of 3: and 7, mixing, namely uniformly mixing the magnetite powder and the cellulose fiber, wherein the total mass of the magnetite powder and the cellulose fiber is 30 percent of the mass of the high-strength high-modulus polyethylene fiber non-woven cloth, and uniformly laying the mixture on the surface of the high-strength high-modulus polyethylene fiber non-woven cloth obtained in the step 1.
3. The high-strength high-modulus polyethylene fiber laid cloth prepared by the method is placed in a constant temperature and humidity box, the temperature is 75 ℃, the humidity is 30%, and the time is 30min.
4. 100 layers of high-strength high-modulus polyethylene fiber are laid in a pressing die at 110 ℃ under 25Mpa for 1h.
5. And taking out the electromagnetic shielding bulletproof plate after the pressing time is finished, and performing corner polishing treatment to obtain the ultra-high molecular weight polyethylene fiber bulletproof plate.
Comparative example 1
Compared with example 1, the difference is that: the magnetite powder was replaced with iron powder, and the other was the same as in example 1.
Comparative example 2
Compared with example 1, the difference is that: in step 3, the temperature was controlled to 65℃and the humidity to 10%, and the same as in example 1 was repeated.
The materials obtained in the above examples and comparative examples were tested for electromagnetic shielding properties, and test data shown in table 1 were obtained.
Table 1 table of electromagnetic shielding performance data for different materials
Material Electromagnetic frequency Electromagnetic shielding effectiveness/dB Ballistic rating
Example 1 1.0GHz 55.6 GA3 grade
Example 2 1.0GHz 54.7 GA3 grade
Comparative example 1 1.0GHz 48.9 GA3 grade
Comparative example 2 1.0GHz 41.5 GA3 grade
From the performance of the materials of the embodiment and the comparative example of the application, the electromagnetic shielding effect can be improved by adding the magnetite powder and increasing the humidity of treatment.
The electromagnetic shielding effectiveness of the bulletproof plate prepared by the invention is more than 50dB within the range of 20MHz-2GHz, thereby achieving better level performance.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to imply that the scope of the present application is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the spirit of the application, steps may be implemented in any order, and there are many other variations of the different aspects of one or more embodiments described above which are not provided in detail for the sake of brevity.
One or more embodiments herein are intended to embrace all such alternatives, modifications and variations that fall within the broad scope of the present application. Any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the one or more embodiments in the present application, are therefore intended to be included within the scope of the present application.

Claims (4)

1. The preparation method of the ultra-high molecular weight polyethylene fiber bulletproof plate is characterized by comprising the following steps of,
coating an aqueous polyurethane adhesive on the surface of the polyethylene fiber laid fabric, then laying a mixture of magnetite powder and cellulose fiber on the surface of the polyethylene fiber laid fabric, controlling the temperature to be 65-75 ℃ and the humidity to be 30-45%, and after 20-30min of treatment, pressing the multi-layer polyethylene fiber laid fabric to obtain the ultra-high molecular weight polyethylene fiber bulletproof plate;
the solid content of the aqueous polyurethane adhesive is 30-45%, and the pH value is 7-9;
the weight ratio of the magnetite powder to the cellulose fiber is 2-3:7-8;
the total weight of the magnetite powder and the cellulose fiber is 10-30% of the weight of the polyethylene fiber laid fabric.
2. The method according to claim 1, wherein the pressing temperature is 100 to 110 ℃ and the pressing pressure is 20 to 25MPa.
3. The method of claim 2, wherein the pressing time is 1 to 1.5 hours.
4. An ultra-high molecular weight polyethylene fiber bulletproof plate, which is characterized in that the ultra-high molecular weight polyethylene fiber bulletproof plate is prepared by adopting the preparation method of any one of claims 1-3.
CN202210493342.6A 2022-05-07 2022-05-07 Preparation method of ultra-high molecular weight polyethylene fiber bulletproof plate and bulletproof plate Active CN114705085B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101072493A (en) * 2007-05-22 2007-11-14 北京理工大学 Polyethylene composite film for shielding wideband electromagnetic wave and its preparing method
CN102538590A (en) * 2011-12-16 2012-07-04 宁波荣溢化纤科技有限公司 Preparation method of polyethylene/aluminum oxide composite bulletproof plate with super-high molecular weight
CN102564233A (en) * 2011-12-16 2012-07-11 宁波荣溢化纤科技有限公司 Ultra-high molecular weight polyethylene/aluminum oxide compound bulletproof plate
KR20180064200A (en) * 2016-12-05 2018-06-14 주식회사 하이젠 Panel for bullet-proof, explosion proof and shielding electromagnetic waves
CN111516340A (en) * 2020-07-03 2020-08-11 宁波曙翔新材料股份有限公司 Invisible and anti-damage shielding material and preparation method thereof
CN112414218A (en) * 2020-10-12 2021-02-26 湖南博翔新材料有限公司 Wave-absorbing stealth bulletproof plate with integrated structure and preparation method thereof
CN112757713A (en) * 2021-01-28 2021-05-07 北京机电工程研究所 Multifunctional protection and multi-spectrum stealth structure and preparation method thereof
CN114179399A (en) * 2021-12-10 2022-03-15 湖南中泰特种装备有限责任公司 Preparation method of weftless fabric
CN114228281A (en) * 2021-12-10 2022-03-25 湖南中泰特种装备有限责任公司 Manufacturing method of titanium alloy composite bulletproof plate

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101072493A (en) * 2007-05-22 2007-11-14 北京理工大学 Polyethylene composite film for shielding wideband electromagnetic wave and its preparing method
CN102538590A (en) * 2011-12-16 2012-07-04 宁波荣溢化纤科技有限公司 Preparation method of polyethylene/aluminum oxide composite bulletproof plate with super-high molecular weight
CN102564233A (en) * 2011-12-16 2012-07-11 宁波荣溢化纤科技有限公司 Ultra-high molecular weight polyethylene/aluminum oxide compound bulletproof plate
KR20180064200A (en) * 2016-12-05 2018-06-14 주식회사 하이젠 Panel for bullet-proof, explosion proof and shielding electromagnetic waves
CN111516340A (en) * 2020-07-03 2020-08-11 宁波曙翔新材料股份有限公司 Invisible and anti-damage shielding material and preparation method thereof
CN112414218A (en) * 2020-10-12 2021-02-26 湖南博翔新材料有限公司 Wave-absorbing stealth bulletproof plate with integrated structure and preparation method thereof
CN112757713A (en) * 2021-01-28 2021-05-07 北京机电工程研究所 Multifunctional protection and multi-spectrum stealth structure and preparation method thereof
CN114179399A (en) * 2021-12-10 2022-03-15 湖南中泰特种装备有限责任公司 Preparation method of weftless fabric
CN114228281A (en) * 2021-12-10 2022-03-25 湖南中泰特种装备有限责任公司 Manufacturing method of titanium alloy composite bulletproof plate

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