CN110537745A - Stab-resistant garment and preparation method thereof - Google Patents
Stab-resistant garment and preparation method thereof Download PDFInfo
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- CN110537745A CN110537745A CN201810522526.4A CN201810522526A CN110537745A CN 110537745 A CN110537745 A CN 110537745A CN 201810522526 A CN201810522526 A CN 201810522526A CN 110537745 A CN110537745 A CN 110537745A
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Abstract
The invention discloses a stab-resistant garment and a preparation method thereof. The stab-resistant garment is provided with a fabric layer and a thermal spraying coating from inside to outside, and the thermal spraying coating is sprayed on the fabric layer; the material of the fabric layer is selected from aramid or ultra-high molecular weight polyethylene; the thermal spraying coating is one or the combination of a metal coating or a metal ceramic coating. According to the invention, the high-performance fiber fabric is made into the original form of the stab-resistant clothing, then a thermal spraying process is utilized to spray a metal or metal ceramic coating with a certain thickness on the fabric, and then a fixing device is added to the high-performance flexible fabric, so that the stab-resistant clothing with high stab-resistant effect is obtained; the preparation method of the stab-resistant clothing material provided by the invention is simple to operate, low in cost, high in efficiency and suitable for industrial production; the stab-resistant clothing prepared by the invention has a compact structure, has the performances of high strength, high hardness, high tensile strength and the like, has an excellent stab-resistant effect, and has good application prospects and economic benefits in the individual protection field.
Description
Technical Field
The invention belongs to the technical field of individual protection, and particularly relates to a stab-resistant garment and a preparation method thereof.
background
Along with the progress of global economy integration, various communication activities are increasingly frequent, and particularly when terrorism and violent activities are raised nowadays, the self-protection consciousness of people is gradually enhanced. Anti-terrorism has become a major concern in the world, especially in the developed countries, and the development of individual protective products has therefore been rapidly advancing. And some countries such as China carry out strict control measures on firearms and ammunitions, so that the injury of sharp instruments such as daggers and awls becomes a main threat harming the life safety of people. Under the background, the research and development of stab-resistant armor, an important component in the field of individual protection, become a hot spot for tracking of enterprises and research institutions.
The individual stab-resistant uniform is a special protective product designed for protecting important organs of a human body from being injured by sharp instruments such as a bayonet, a dagger and the like; according to different materials, the material can be divided into three types of hard material, soft material and semi-hard material. The hard stab-resistant clothes are made of metal materials as guard plates; the semi-hard stab-resistant suit takes fiber and metal composite materials as a guard plate; the soft stab-resistant clothing is made by using high-performance chemical fiber fabric as a matrix and coating a layer of other fabric on the outer part of the matrix.
in recent years, with the application of high-performance fibers such as ultra-high molecular weight polyethylene (UHMWPE) fibers, aramid fibers, spider silks and the like in individual stab-resistant clothing, the weight of the stab-resistant clothing is greatly reduced, and the wearing comfort is also obviously improved; however, in the actual use process of the stab-resistant clothes, the problems of insufficient stab-resistant capability or unstable quality often occur. As a flexible material, the high-performance fiber fabric in the stab-resistant armor has good tensile resistance and good energy absorption effect, so that the high-performance fiber fabric is widely applied to the flexible bulletproof armor, but the stab-resistant performance of the soft material is poor.
Patent document CN102435102A provides a bullet-proof and stab-proof armor and a preparation method thereof, wherein the bullet-proof and stab-proof armor comprises the following components in sequence from outside to inside: the titanium alloy composite plate comprises a first composite layer, a middle layer and a second composite layer, wherein the middle layer is 1 layer of titanium alloy sheet, and the first composite layer and the second composite layer sequentially comprise from outside to inside: 18 layers of non-woven cloth with the density of 135g/cm2 and 1 layer of titanium alloy sheet, wherein the fibers in the adjacent non-woven cloth are arranged at 0 degree/20 degree. The first composite layer and the second composite layer in the bulletproof and stab-resistant garment have high cutting resistance and impact resistance, the inner layer titanium alloy sheet is used for further improving the bulletproof performance, and the bulletproof and stab-resistant garment formed by compounding the first composite layer, the middle titanium alloy sheet and the second composite layer is capable of resisting multiple attacks. Tests prove that the bulletproof stab-resistant armor provided by the invention has excellent comprehensive bulletproof stab-resistant performance and meets the standards of police rebound armor and stab-resistant armor, and the bulletproof stab-resistant armor provided by the invention is light in weight and does not hinder the actions of dressed people.
the thermal spraying technology is a surface strengthening technology and is an important component of the surface engineering technology. In recent years, with the continuous appearance of novel materials and novel energy sources, various hot spraying technologies at home and abroad are developed very rapidly and are applied more and more widely. The base material of the thermal spraying technology is not limited, the range of the spraying coating material is extremely wide, the base material is slightly influenced by heat in the spraying process, the range of the thickness of the prepared coating is wide, and the coating with various special functions of wear resistance, corrosion resistance, high strength, high hardness and the like can be prepared, so that the adaptability is strong, and the economic benefit is good.
Disclosure of Invention
The invention aims to provide a stab-resistant garment and a preparation method thereof. The preparation method of the stab-resistant garment provided by the invention has the advantages of simple operation, low cost, high efficiency and the like, and the stab-resistant garment provided by the invention has a compact structure, has the performances of high strength, high hardness, high tensile strength and the like, has an excellent stab-resistant effect, and greatly improves the safety of the stab-resistant garment.
The invention provides the following technical scheme:
the stab-resistant suit comprises a fabric layer and a thermal spray coating in sequence from inside to outside, wherein the thermal spray coating is sprayed on the fabric layer; the fabric layer is made of aramid fibers or ultra-high molecular weight polyethylene fibers; the thermal spraying coating is selected from one or the combination of a metal coating or a metal ceramic coating.
Wherein the material of the fabric layer influences the comfort and tensile strength of the stab-resistant garment and the material of the thermal spray coating influences the strength and hardness of the stab-resistant garment.
The inner side from the inside to the outside means the side close to the human body.
the stab-resistant suit also comprises a flexible fabric layer, and the flexible fabric layer is fixed on the surface of the thermal spraying layer through a fixing device.
The fabric layer is a high-performance fiber layer.
The aramid fiber is Kevlar. Kevlar is an aromatic polyamide fiber.
ultra-high molecular weight polyethylene is unbranched linear polyethylene having a molecular weight of 150 ten thousand or more.
the metal coating is selected from one or the combination of at least two of stainless steel, nickel alloy, copper alloy or aluminum alloy, and the metal ceramic coating is selected from one or the combination of at least two of CrC-NiCr, WC-Co, WC-CoCr, diamond-NiCr or diamond-NiCrAl.
Preferably, the material of the fabric layer is selected from ultra-high molecular weight polyethylene fibers, and the material of the thermal spraying layer is selected from one or a combination of at least two of stainless steel, nickel alloy or WC-Co. The range ensures that the prepared stab-resistant clothes have good tensile resistance and energy absorption effect and simultaneously have stab-resistant performance.
The raw material of the metal coating is powder particles or wire materials; the particle size of the powder particles is 5-150 mu m, and the diameter of the wire is 1-5 mm.
The raw material of the metal ceramic coating is powder particles; the particle size of the powder particles is 5-150 mu m.
The number of the thermal spraying layers is 1-2, and the thickness is 1 mu m-1 mm.
Preferably, the number of the thermal spraying layers is 2, and the thermal spraying layers are stainless steel/nickel alloy or stainless steel/WC-Co composite coatings with the thickness of 300-400 mu m.
The thickness of the fabric layer is 1-5 mm, and the thickness of the thermal spraying layer is 1 mu m-1 mm. Wherein the thickness of the fabric layer affects the comfort and tensile strength of the stab resistant garment and the thickness of the thermal spray coating affects the strength and hardness of the stab resistant garment.
preferably, the thickness of the fabric layer is 1-3 mm, and the thickness of the thermal spraying layer is 200-500 mu m. The range ensures that the prepared stab-resistant clothes have good tensile resistance and energy absorption effect and simultaneously have stab-resistant performance.
The invention also provides a preparation method of the stab-resistant garment, which comprises the following steps:
(1) Preparing a fabric layer of the stab-resistant garment: making the fabric into a rudiment of the stab-resistant clothing to obtain a fabric layer;
(2) Preparing a thermal spraying coating of the stab-resistant clothing: preparing a thermal spraying coating on the surface of the fabric layer;
(3) thermal spraying coating of the after-treatment stab-resistant clothing: and covering a layer of flexible fabric on the surface of the sprayed stab-resistant clothing, and adding a fixing device for the stab-resistant clothing.
The flexible fabric is covered on the surface of the anti-stab clothes after spraying, so that the comfort of the anti-stab clothes is improved, and the wearability of the anti-stab clothes is improved by adding a fixing device.
the preparation method of the thermal spraying layer in the step (2) is one or a combination of at least two of electric arc spraying, flame spraying, plasma spraying and cold spraying.
Preferably, the preparation method of the thermal spray coating in the step (2) is selected from one or a combination of two of electric arc spraying, plasma spraying, flame spraying and cold spraying.
The stab-resistant clothes obtained in the step (3) are in the shapes of stab-resistant vests, stab-resistant waistcoats, cut-resistant neckerchields or cut-resistant armguards.
The preparation method of the thermal spraying layer in the step (2) is electric arc spraying, and the process parameters are as follows: the current is 50-150A, the voltage is 10-48V, the air pressure is 0.4-0.8 MPa, the spraying distance is 100-300 mm, the speed of the spray gun is 10-300 mm/s, and the number of spraying times of the coating is 1-50.
preferably, the process parameters of the electric arc spraying are as follows: the current is 50-150A, the voltage is 10-48V, the air pressure is 0.4-0.8 Mpa, the spraying distance is 100-300 mm, the speed of the spray gun is 10-300 mm/s, and the spraying times of the coating are 3-5 times. The technological parameters of the electric arc spraying are adjusted according to the material and the thickness of the thermal spraying layer, so that the strength and the hardness of the stab-resistant suit are improved, and the stab-resistant performance of the stab-resistant suit is improved.
The preparation method of the thermal spraying layer in the step (2) is flame spraying, and the process parameters are as follows: the flow rate of combustion-supporting gas O2 is 500-1000 nl/min, the flow rate of fuel kerosene is 200-600 ml/min, the flow rate of a powder feeder is 5-20 nl/min, the powder feeding amount is 5-25 rpm, the spraying distance is 100-500 mm, the moving speed of a spray gun is 50-500 mm/s, and the spraying times of a coating are 1-50 times.
Preferably, the flame spraying process parameters are as follows: the flow rate of combustion-supporting gas O2 is 700-900 nl/min, the flow rate of fuel kerosene is 300-500 ml/min, the air flow rate of a powder feeder is 7-9 nl/min, the powder feeding amount is 14-16 rpm, the spraying distance is 200-450 mm, the moving speed of a flame spray gun is 200-400 mm/s, and the spraying times of a coating are 3-7 times. The technological parameters of the flame spraying are adjusted according to the material and the thickness of the thermal spraying layer, so that the strength and the hardness of the stab-resistant suit are improved, and the stab-resistant performance of the stab-resistant suit is improved.
The preparation method of the thermal spraying layer in the step (2) is plasma spraying, and the process parameters are as follows: h2 pressure is 0.2-0.6 MPa, Ar pressure is 0.4-0.9 MPa, N2 pressure is 0.4-0.9 MPa, voltage is 40-70V, current is 400-700A, spraying distance is 100-500 mm, moving speed of a spray gun is 50-500 mm/s, and the number of coating spraying times is 1-50.
The preparation method of the thermal spraying layer in the step (2) is cold spraying, and the process parameters are as follows: the working gas is nitrogen, the pressure is 1-5 MPa, the heating temperature is 100-700 ℃, the powder feeding speed is 1-10 rpm, the spraying distance is 5-50 mm, the speed of a spray gun is 300-1000 mm/s, and the number of spraying times of the coating is 1-50 times.
Preferably, the cold spraying process parameters are as follows: the working gas is nitrogen, the pressure is 3MPa, the heating temperature is 300-500 ℃, the powder feeding speed is 1-3 rpm, the spraying distance is 10-30 mm, the speed of a spray gun is 600-800 mm/s, and the spraying times of the coating are 5-7 times. The technological parameters of the cold spraying are adjusted according to the material and the thickness of the hot spraying layer, so that the strength and the hardness of the stab-resistant suit are improved, and the stab-resistant performance of the stab-resistant suit is improved.
According to the invention, the coating with high puncture-proof performance is sprayed on the surface of the puncture-proof suit by utilizing a thermal spraying technology, so that the prepared puncture-proof suit has a compact structure, has the performances of comfort, high strength, high hardness, high tensile strength and the like, and is excellent in puncture-proof effect, and the safety of the puncture-proof suit is greatly improved.
According to the invention, one or more layers of high-strength and high-hardness coating materials are sprayed on the surface of the flexible fabric by a thermal spraying technology, so that the flexible fabric has an anti-stab function; and the comfort of the stab-resistant suit is improved by coating the coating material with the high-performance flexible fabric.
The stab-resistant suit provided by the invention has good application prospect and economic benefit in the field of individual protection.
Compared with the prior art, the invention has the following advantages:
(1) The traditional protective clothing can not prevent stabbing and only can prevent cutting or scratching, the stab-resistant clothing provided by the invention overcomes the defect of insufficient strength and hardness of fabric materials, and a thermal spraying coating is introduced to improve the material performance and realize the stab-resistant function of the protective clothing;
(2) The preparation method of the stab-resistant garment provided by the invention is low in equipment cost, simple in process, high in efficiency and suitable for industrial production.
drawings
Fig. 1 is a schematic cross-sectional view of a stab-resistant garment according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
As shown in figure 1, the stab-resistant clothes provided by the invention sequentially comprise a fabric layer 2 and a thermal spraying layer 1 from inside to outside, wherein the thermal spraying layer 1 is sprayed on the fabric layer 2.
The stab-resistant suit provided by the invention further comprises a flexible fabric layer, wherein the flexible fabric layer is fixed on the surface of the thermal spraying layer through a fixing device.
The stab-resistant performance of the stab-resistant garment provided by the invention is detected as follows: the standard test tool is used for adding kinetic energy of more than or equal to 2.4 kilograms and more than or equal to 24J, the stabproof clothes are pierced according to 0 degree and 45 degrees, and the tool tip cannot penetrate the stabproof clothes.
Example 1
in this embodiment, the fabric layer has a thickness of 1mm and is made of ultra-high molecular weight polyethylene (UHMWPE) fibers, the thermal spray coating is made of stainless steel, and the specific preparation method of the stab-resistant armor is as follows:
1. Preparing a high-performance fiber fabric layer of the stab-resistant armor: manufacturing the UHMWPE fiber fabric into a stab-resistant vest with a certain thickness;
2. Preparing a thermal spraying coating of the stab-resistant waistcoat: preparing a layer of thermal spraying stainless steel coating with the thickness of 200 mu m on the surface of the UHMWPE fiber fabric by adopting electric arc spraying; when the electric arc spraying preparation is carried out, the process parameters are as follows: the current is 50A, the voltage is 10V, the air pressure is 0.4Mpa, the spraying distance is 100mm, the speed of a spray gun is 10mm/s, and the spraying times of the coating are 5 times;
3. Thermal spray coating of the after-treatment stab-resistant vest: the surface of the thermal spraying layer of the stab-resistant vest is covered with a layer of high-performance flexible fabric, so that the comfort of the stab-resistant vest is improved, and the wearability of the stab-resistant vest is improved by adding a fixing device to the vest.
When the puncture-proof clothes prepared by the method are subjected to puncture-proof performance detection, the knife tip cannot penetrate through the puncture-proof waistcoat.
Example 2
In this embodiment, the fabric layer has a thickness of 1mm, is made of ultra-high molecular weight polyethylene (UHMWPE) fibers, the thermal spray coating is made of a nickel alloy, and the specific preparation method of the stab-resistant armor is as follows:
1. preparing a high-performance fiber fabric layer of the stab-resistant armor: manufacturing the UHMWPE fiber fabric into a stab-resistant vest;
2. Preparing a thermal spraying coating of the stab-resistant waistcoat: preparing a layer of thermal spraying nickel alloy coating with the thickness of 300 mu m on the surface of the UHMWPE fiber fabric by adopting cold spraying; wherein the cold spraying process parameters are as follows: the working gas is nitrogen, the pressure is 3MPa, the heating temperature is 500 ℃, the powder feeding speed is 3rpm, the spraying distance is 30mm, the speed of a spray gun is 800mm/s, and the spraying times of the coating are 5 times;
3. Thermal spray coating of the after-treatment stab-resistant vest: the surface of the anti-stab vest after spraying is covered with a layer of high-performance flexible fabric, so that the comfort of the anti-stab vest is improved, and the wearability of the anti-stab vest is improved by adding a fixing device for the vest.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
example 3
In this embodiment, the thickness of the fabric layer is 1mm, the material is ultra-high molecular weight polyethylene (UHMWPE) fibers, the thermal spray coating is a stainless steel/nickel alloy composite coating, and the specific preparation method of the stab-resistant garment is as follows:
1. Preparing a high-performance fiber fabric layer of the stab-resistant armor: manufacturing the UHMWPE fiber fabric into a stab-resistant vest with a certain thickness;
2. preparing a thermal spraying coating of the stab-resistant waistcoat: firstly, preparing a layer of thermal spraying stainless steel coating with the thickness of 200 mu m on the surface of UHMWPE fiber fabric by adopting flame spraying; wherein the flame spraying process parameters are as follows: the flow rate of combustion-supporting gas O2 is 900nl/min, the flow rate of fuel kerosene is 500ml/min, the gas flow rate of a powder feeder is 9nl/min, the powder feeding amount is 16rpm, the spraying distance is 450mm, the moving speed of a flame spray gun is 400mm/s, and the spraying times of the coating are 3 times; and preparing a 200-micron thermal spraying nickel alloy coating on the surface of the stainless steel coating by adopting flame spraying, wherein the process parameters during the flame spraying preparation are as follows: the flow rate of combustion-supporting gas O2 is 700nl/min, the flow rate of fuel kerosene is 300ml/min, the air flow rate of a powder feeder is 7nl/min, the powder feeding amount is 14rpm, the spraying distance is 200mm, the moving speed of a flame spray gun is 200mm/s, and the spraying times of the coating are 7 times; the prepared thermal spraying coating is a double-layer coating of a layer of stainless steel and a layer of nickel alloy.
3. Thermal spray coating of the after-treatment stab-resistant vest: the surface of the anti-stab vest after spraying is covered with a layer of high-performance flexible fabric, so that the comfort of the anti-stab vest is improved, and the wearability of the anti-stab vest is improved by adding a fixing device for the vest.
The stab-resistant performance of the prepared stab-resistant waistcoat is detected, and the tool nose cannot penetrate through the stab-resistant clothes.
Example 4
In this embodiment, the thickness of the fabric layer is 1mm, the material is ultra-high molecular weight polyethylene (UHMWPE) fibers, the thermal spray coating is a stainless steel/WC — Co composite coating, and the specific preparation method of the stab-resistant garment is as follows:
1. Preparing a high-performance fiber fabric layer of the anti-cutting scarf: manufacturing the UHMWPE fabric into an anti-cutting neckerchief with a certain thickness;
2. Preparing a thermal spraying coating of the anti-cutting scarf: wherein when the stainless steel layer is prepared by electric arc spraying, the technological parameters are as follows: the current is 50A, the voltage is 10V, the air pressure is 0.4Mpa, the spraying distance is 100mm, the speed of a spray gun is 10mm/s, and the spraying times of the coating are 5 times; preparing a WC-Co composite coating with the thickness of 300 mu m on the surface of the stainless steel by adopting plasma spraying; the plasma spraying process parameters are as follows: h2 pressure is 0.4MPa, Ar pressure is 0.6MPa, N2 pressure is 0.6MPa, voltage is 50V, current is 500A, spraying distance is 300mm, moving speed of a spray gun is 200mm/s, and the number of spraying times of the coating is 10;
3. thermal spraying coating of the after-treatment cut-proof scarf: the surface of the sprayed anti-cutting scarf is covered with a layer of high-performance flexible fabric, so that the comfort of the anti-cutting scarf is improved.
When the puncture-proof performance of the prepared anti-cutting scarf is detected, the tool tip cannot penetrate through the anti-cutting scarf.
Example 5
The stab-resistant vest as provided in embodiment 2, wherein the cold spray process parameters are: the working gas is nitrogen, the pressure is 3MPa, the heating temperature is 300 ℃, the powder feeding speed is 1rpm, the spraying distance is 10mm, the speed of a spray gun is 600mm/s, and the spraying times of the coating are 7 times;
The pricking resistant waistcoat prepared above was tested for pricking resistance as follows, and the point of the knife could not penetrate the pricking resistant waistcoat.
Example 6
A stab-resistant vest as provided in example 1, wherein the fabric layer has a thickness of 3 mm.
The technological parameters of the electric arc spraying preparation are as follows: the current is 150A, the voltage is 48V, the air pressure is 0.8Mpa, the spraying distance is 300mm, the speed of the spray gun is 300mm/s, and the spraying times of the coating are 5 times.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
example 7
A stab-resistant vest as provided in example 1, wherein the fabric layer has a thickness of 5mm and the thermally sprayed coating has a thickness of 1 mm.
Preparing a layer of thermal spraying nickel alloy coating with the thickness of 300 mu m on the surface of the UHMWPE fiber fabric by adopting plasma spraying, wherein the process parameters of the plasma spraying are as follows: the H2 pressure is 0.2MPa, the Ar pressure is 0.4MPa, the N2 pressure is 0.4MPa, the voltage is 40V, the current is 400A, the spraying distance is 100mm, the moving speed of a spray gun is 50mm/s, and the spraying times of the coating are 50 times.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
Example 8
A stab-resistant vest as provided in example 1, wherein the fabric layer has a thickness of 1mm and the thermally sprayed coating has a thickness of 1 μm.
Preparing a layer of thermal spraying nickel alloy coating with the thickness of 300 mu m on the surface of the UHMWPE fiber fabric by adopting plasma spraying, wherein the process parameters of the plasma spraying are as follows: h2 pressure is 0.6MPa, Ar pressure is 0.9MPa, N2 pressure is 0.9MPa, voltage is 70V, current is 700A, spraying distance is 500mm, moving speed of a spray gun is 500mm/s, and the number of spraying times of the coating is 1.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
Example 9
The stab-resistant vest as provided in example 3, wherein the flame spraying process parameters are: the flow rate of combustion-supporting gas O2 is 500nl/min, the flow rate of fuel kerosene is 200ml/min, the air flow rate of a powder feeder is 5nl/min, the powder feeding amount is 5rpm, the spraying distance is 100mm, the moving speed of a spray gun is 50mm/s, and the spraying times of the coating are 50 times; the parameters of the electric arc spraying process are as follows: the current is 50A, the voltage is 10V, the air pressure is 0.4MPa, the spraying distance is 100mm, the speed of the spray gun is 10mm/s, and the spraying times of the coating are 50 times.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
Example 10
The stab-resistant vest as provided in example 3, wherein the flame spraying process parameters are: the flow rate of combustion-supporting gas O2 is 1000nl/min, the flow rate of fuel kerosene is 600ml/min, the air flow rate of a powder feeder is 20nl/min, the powder feeding amount is 25rpm, the spraying distance is 500mm, the moving speed of a spray gun is 50-500 mm/s, and the spraying times of the coating are 1 time; the parameters of the electric arc spraying process are as follows: the current is 150A, the voltage is 48V, the air pressure is 0.8MPa, the spraying distance is 300mm, the speed of the spray gun is 300mm/s, and the spraying times of the coating are 1.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
Example 11
The stab-resistant vest as provided in embodiment 2, wherein the cold spray process parameters are: the working gas is nitrogen, the pressure is 5MPa, the heating temperature is 700 ℃, the powder feeding speed is 10rpm, the spraying distance is 35mm, the speed of a spray gun is 1000mm/s, and the spraying times of the coating are 1.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
Example 12
The stab-resistant vest as provided in embodiment 2, wherein the cold spray process parameters are: the working gas is nitrogen, the pressure is 1MPa, the heating temperature is 100 ℃, the powder feeding speed is 1rpm, the spraying distance is 25mm, the speed of the spray gun is 300mm/s, and the spraying times of the coating are 50 times.
And (3) detecting the puncture-proof performance of the prepared puncture-proof waistcoat, wherein the knife tip cannot penetrate through the puncture-proof waistcoat.
Claims (8)
1. The stab-resistant suit is characterized by comprising a fabric layer and a thermal spraying layer from inside to outside in sequence, wherein the thermal spraying layer is sprayed on the fabric layer; the fabric layer is made of aramid fibers or ultra-high molecular weight polyethylene fibers; the thermal spraying coating is selected from one or the combination of a metal coating or a metal ceramic coating.
2. A stab-resistant garment as claimed in claim 1, wherein said metallic coating is selected from one or a combination of at least two of stainless steel, nickel alloy, copper alloy or aluminium alloy, and said cermet coating is selected from one or a combination of at least two of CrC to NiCr, WC to Co, WC to CoCr, diamond to NiCr or diamond to NiCrAl.
3. The stab-resistant garment according to claim 1, wherein the material of said fabric layer is selected from ultra-high molecular weight polyethylene fibres, and the material of said thermally sprayed coating is selected from one or a combination of at least two of stainless steel, nickel alloy or WC to Co.
4. The stab-resistant garment according to claim 1 or 2, wherein the fabric layer has a thickness of 1 to 5 mm.
5. stab-resistant garment according to claim 1 or 2, wherein said thermal spray coating has a thickness of 1 μm to 1 mm.
6. a method of making the stab-resistant garment of any of claims 1-5, comprising the steps of:
(1) preparing a fabric layer of the stab-resistant garment: making the fabric into a rudiment of the stab-resistant clothing to obtain a fabric layer;
(2) Preparing a thermal spraying coating of the stab-resistant clothing: preparing a thermal spraying coating on the surface of the fabric layer;
(3) thermal spraying coating of the after-treatment stab-resistant clothing: and covering a layer of flexible fabric on the surface of the sprayed stab-resistant clothing, and adding a fixing device for the stab-resistant clothing.
7. The method for preparing stab-resistant clothing as claimed in claim 6, wherein said thermal spray coating in step (2) is prepared by one or a combination of at least two selected from arc spraying, flame spraying, plasma spraying and cold spraying.
8. The method for preparing the stab-resistant garment according to claim 6, wherein the stab-resistant garment obtained in the step (3) is a stab-resistant vest, a stab-resistant waistcoat, a cut-resistant neckerchief or a cut-resistant armguard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810522526.4A CN110537745A (en) | 2018-05-28 | 2018-05-28 | Stab-resistant garment and preparation method thereof |
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| CN201810522526.4A CN110537745A (en) | 2018-05-28 | 2018-05-28 | Stab-resistant garment and preparation method thereof |
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| CN110537745A true CN110537745A (en) | 2019-12-06 |
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| CN111021081A (en) * | 2019-12-25 | 2020-04-17 | 江苏领瑞新材料科技有限公司 | Method for processing woven fabric stab-resistant coating |
| CN114657792A (en) * | 2022-03-17 | 2022-06-24 | 瑞安市博安防刺穿材料科技有限公司 | Production process of anti-puncture insole cloth |
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