CN110864586A - A flame-resistant composite coating bulletproof steel plate - Google Patents

Abstract

The invention discloses a flame-resistant cut composite coating bulletproof steel plate, which comprises a flame-retardant layer, a thermal barrier layer, a bulletproof steel plate layer and a heat insulation layer which are sequentially overlapped; compared with the prior art, the structural strength of the bulletproof steel plate layer is ensured, the heat-insulating layer is formed by the flame-retardant layer, the flame cutting resistance of the bulletproof steel plate layer is improved, the influence degree of high temperature and flame on the heat-insulating layer is reduced, and the heat conduction efficiency of the bulletproof steel plate layer is reduced by the heat barrier layer; the flame-resistant cutting performance can be mutually enhanced through the matching of the flame-resistant layer, the heat barrier layer and the heat insulation layer.

Description

A flame-resistant composite coating bulletproof steel plate

technical field

The invention relates to the technical field of bulletproof steel plates, in particular to a flame-cut-resistant composite coating bulletproof steel plate.

Background technique

Bullet-proof steel plates are generally used in bullet-proof and explosion-proof projects, such as bullet-proof doors, bullet-proof helmets, bullet-proof vests, bullet-proof shields; bank counters, confidential safes; riot vehicles, bullet-proof cash transport vehicles, armored personnel carriers, combat vehicles, submarines, landing craft , anti-smuggling boats, helicopters, etc.

The main technical improvement point of bulletproof steel plate is its structural strength and thickness. Generally speaking, the larger its thickness, the greater its structural strength, but the thickness of the bulletproof steel plate is too large and it is inconvenient to apply, so now it is mainly to ensure the bulletproof steel plate. In the case of structural strength, the thickness is reduced, and the composite properties of bulletproof steel plates are relatively poor, such as fire resistance and thermal conductivity.

SUMMARY OF THE INVENTION

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a flame-resistant composite coating bulletproof steel plate, so as to solve the problems in the prior art. Bad question.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a flame-resistant composite coating bulletproof steel plate, comprising a flame retardant layer, a thermal barrier layer, a bulletproof steel plate layer and a heat insulation layer that are stacked in sequence.

Compared with the prior art, the present invention has the following beneficial effects:

The flame-resistant composite coating bulletproof steel plate ensures its structural strength through the bulletproof steel plate layer, and then forms a thermal insulation layer through the flame retardant layer to improve its flame cutting resistance, and the thermal insulation layer reduces the impact of high temperature and flame. The thermal barrier layer is used to reduce its thermal conduction efficiency; the flame retardant layer, thermal barrier layer and thermal insulation layer can synergize the performance of flame cutting resistance.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed ways

The present invention is described in further detail below by specific embodiments:

Reference numerals in the accompanying drawings include: flame retardant layer 1 , thermal barrier layer 2 , bulletproof steel plate layer 3 , heat insulation layer 4 , body layer 31 , and attachment protrusion 32 .

Example 1

Referring to FIG. 1 , a flame-resistant composite coating bulletproof steel plate includes a flame retardant layer 1 , a thermal barrier layer 2 , a bulletproof steel plate layer 3 and a heat insulation layer 4 that are stacked in sequence.

In order to enhance the adhesion between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3 , the adopted bulletproof steel plate layer 3 includes a body layer 31 and attachment reinforcements disposed on both surfaces of the body layer 31 . The attachment reinforcements include A plurality of attachment grooves evenly distributed on the body layer 31 and the attachment protrusions 32 arranged between two adjacent attachment grooves; Improve the adhesion therebetween, and at the same time can increase the longitudinal tensile force of the contact surface between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3; wherein, the adhesion protrusion 32 includes the connecting column and the body layer 31 integrally formed. The limit block is integrally formed with the connecting column. The limit block and the body layer 31 are located at different ends of the connecting column, and the diameter of the connecting column is smaller than the block diameter of the limit block. 2 or the heat insulating layer 4 can produce a certain pressing effect to further improve the adhesion between the thermal barrier layer 2 and the heat insulating layer 4 and the bulletproof steel plate layer 3 .

The specific parameters and preparation methods of the flame-resistant composite coating bulletproof steel plate are as follows:

1. Select the bulletproof steel plate layer 3 with a thickness of 5 mm for the body layer 31, and first pass the sandblasting and texturing to the surface of the bulletproof steel plate layer 3 to improve the adhesion of the surface of the bulletproof steel plate layer 3, and then use the plasma spraying technology to make the main components: The heat insulating agent of CrC-25NiCr ceramic is uniformly sprayed on the surface of the bulletproof steel plate layer 3 to form a thermal barrier layer 2, and the thickness of the thermal barrier layer 2 is 0.5mm;

2. Evenly mix 75% by weight of expanded graphite and inorganic adhesive to form a flame retardant, and then spray the flame retardant evenly on the surface of the cured thermal barrier layer 2 by means of compressed air high pressure spraying to form a flame retardant Layer 1, the thickness of the flame retardant layer 1 after curing is 1.2mm;

3. Mix 80% by weight of lightweight heat-resistant ceramic powder and inorganic adhesive to form a heat insulating agent, and then use compressed air high-pressure spraying to spray the heat insulating agent evenly on the elastic steel plate layer 3 Keep away from the thermal barrier layer A heat insulating layer 4 is formed on one surface of 2, and the thickness of the heat insulating layer 4 after curing is 1 mm.

Example 2

Referring to FIG. 1 , a flame-resistant composite coating bulletproof steel plate includes a flame retardant layer 1 , a thermal barrier layer 2 , a bulletproof steel plate layer 3 and a heat insulation layer 4 that are stacked in sequence.

In order to enhance the adhesion between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3 , the adopted bulletproof steel plate layer 3 includes a body layer 31 and attachment reinforcements disposed on both surfaces of the body layer 31 . The attachment reinforcements include A plurality of attachment grooves evenly distributed on the body layer 31 and the attachment protrusions 32 arranged between two adjacent attachment grooves; Improve the adhesion therebetween, and at the same time can increase the longitudinal tensile force of the contact surface between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3; wherein, the adhesion protrusion 32 includes the connecting column and the body layer 31 integrally formed. The limit block is integrally formed with the connecting column. The limit block and the body layer 31 are located at different ends of the connecting column, and the diameter of the connecting column is smaller than the block diameter of the limit block. 2 or the heat insulating layer 4 can produce a certain pressing effect to further improve the adhesion between the thermal barrier layer 2 and the heat insulating layer 4 and the bulletproof steel plate layer 3 .

The specific parameters and preparation methods of the flame-resistant composite coating bulletproof steel plate are as follows:

1. Select the bulletproof steel plate layer 3 with a thickness of 2.4 mm for the body layer 31, and first pass the sandblasting and texturization to the surface of the bulletproof steel plate layer 3 to improve the adhesion of the surface of the bulletproof steel plate layer 3, and then use the plasma spraying technology to spray the main components. The thermal barrier layer 2 is formed by uniformly spraying the heat insulating agent of CrC-25NiCr ceramic on the surface of the bulletproof steel plate layer 3, and the thickness of the thermal barrier layer 2 is 0.2 mm;

2. Evenly mix 75% by weight of expanded graphite and inorganic adhesive to form a flame retardant, and then spray the flame retardant evenly on the surface of the cured thermal barrier layer 2 by means of compressed air high pressure spraying to form a flame retardant Layer 1, the thickness of the flame retardant layer 1 after curing is 0.5mm;

3. Mix 75% by weight of light-weight heat-resistant ceramic powder and inorganic adhesive to form a heat insulating agent, and then use compressed air high-pressure spraying method to spray the heat insulating agent evenly on the elastic steel plate layer 3 Keep away from the thermal barrier layer A heat insulating layer 4 is formed on one surface of 2, and the thickness of the heat insulating layer 4 after curing is 0.5 mm.

Example 3

Referring to FIG. 1 , a flame-resistant composite coating bulletproof steel plate includes a flame retardant layer 1 , a thermal barrier layer 2 , a bulletproof steel plate layer 3 and a heat insulation layer 4 that are stacked in sequence.

In order to enhance the adhesion between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3 , the adopted bulletproof steel plate layer 3 includes a body layer 31 and attachment reinforcements disposed on both surfaces of the body layer 31 . The attachment reinforcements include A plurality of attachment grooves evenly distributed on the body layer 31 and the attachment protrusions 32 arranged between two adjacent attachment grooves; Improve the adhesion therebetween, and at the same time can increase the longitudinal tensile force of the contact surface between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3; wherein, the adhesion protrusion 32 includes the connecting column and the body layer 31 integrally formed. The limit block is integrally formed with the connecting column. The limit block and the body layer 31 are located at different ends of the connecting column, and the diameter of the connecting column is smaller than the block diameter of the limit block. 2 or the heat insulating layer 4 can produce a certain pressing effect to further improve the adhesion between the thermal barrier layer 2 and the heat insulating layer 4 and the bulletproof steel plate layer 3 .

The specific parameters and preparation methods of the flame-resistant composite coating bulletproof steel plate are as follows:

1. Select the bulletproof steel plate layer 3 with a thickness of 6.5mm for the body layer 31, and first pass the sandblasting and texture on the surface of the bulletproof steel plate layer 3 to improve the adhesion of the surface of the bulletproof steel plate layer 3, and then use the plasma spraying technology to spray the main components. The thermal barrier layer 2 is formed by uniformly spraying the heat insulating agent of CrC-25NiCr ceramic on the surface of the bulletproof steel plate layer 3, and the thickness of the thermal barrier layer 2 is 0.8 mm;

2. Evenly mix 85% by weight of expanded graphite and inorganic adhesive to form a flame retardant, and then spray the flame retardant evenly on the surface of the cured thermal barrier layer 2 by means of compressed air high pressure spraying to form a flame retardant Layer 1, the thickness of the flame retardant layer 1 after curing is 2mm;

3. Mix 85% by weight of light-weight heat-resistant ceramic powder and inorganic adhesive to form a heat insulating agent, and then use compressed air high-pressure spraying to spray the heat insulating agent evenly on the elastic steel plate layer 3 Keep away from the thermal barrier layer A heat insulating layer 4 is formed on one surface of 2, and the thickness of the heat insulating layer 4 after curing is 2 mm.

Example 4

Referring to FIG. 1 , a flame-resistant composite coating bulletproof steel plate includes a flame retardant layer 1 , a thermal barrier layer 2 , a bulletproof steel plate layer 3 and a heat insulation layer 4 that are stacked in sequence.

In order to enhance the adhesion between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3 , the adopted bulletproof steel plate layer 3 includes a body layer 31 and attachment reinforcements disposed on both surfaces of the body layer 31 . The attachment reinforcements include A plurality of attachment grooves evenly distributed on the body layer 31 and the attachment protrusions 32 arranged between two adjacent attachment grooves; Improve the adhesion therebetween, and at the same time can increase the longitudinal tensile force of the contact surface between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3; wherein, the adhesion protrusion 32 includes the connecting column and the body layer 31 integrally formed. The limit block is integrally formed with the connecting column. The limit block and the body layer 31 are located at different ends of the connecting column, and the diameter of the connecting column is smaller than the block diameter of the limit block. 2 or the heat insulating layer 4 can produce a certain pressing effect to further improve the adhesion between the thermal barrier layer 2 and the heat insulating layer 4 and the bulletproof steel plate layer 3 .

The specific parameters and preparation methods of the flame-resistant composite coating bulletproof steel plate are as follows:

1. Select the bulletproof steel plate layer 3 with a thickness of 3 mm of the body layer 31, and first pass the sandblasting and texture on the surface of the bulletproof steel plate layer 3 to improve the adhesion of the surface of the bulletproof steel plate layer 3, and then use the plasma spraying technology to make the main components: The heat insulating agent of CrC-25NiCr ceramic is uniformly sprayed on the surface of the bulletproof steel plate layer 3 to form a thermal barrier layer 2, and the thickness of the thermal barrier layer 2 is 0.5mm;

2. Evenly mix 78% by weight of expanded graphite and inorganic adhesive to form a flame retardant, and then spray the flame retardant evenly on the surface of the cured thermal barrier layer 2 by means of compressed air high pressure spraying to form a flame retardant Layer 1, the thickness of the flame retardant layer 1 after curing is 0.8mm;

3. Mix 80% by weight of lightweight heat-resistant ceramic powder and inorganic adhesive to form a heat insulating agent, and then use compressed air high-pressure spraying to spray the heat insulating agent evenly on the elastic steel plate layer 3 Keep away from the thermal barrier layer A heat insulating layer 4 is formed on one surface of 2, and the thickness of the heat insulating layer 4 after curing is 1.2 mm.

Example 5

Referring to FIG. 1 , a flame-resistant composite coating bulletproof steel plate includes a flame retardant layer 1 , a thermal barrier layer 2 , a bulletproof steel plate layer 3 and a heat insulation layer 4 that are stacked in sequence.

In order to enhance the adhesion between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3 , the adopted bulletproof steel plate layer 3 includes a body layer 31 and attachment reinforcements disposed on both surfaces of the body layer 31 . The attachment reinforcements include A plurality of attachment grooves evenly distributed on the body layer 31 and the attachment protrusions 32 arranged between two adjacent attachment grooves; Improve the adhesion therebetween, and at the same time can increase the longitudinal tensile force of the contact surface between the thermal barrier layer 2 and the thermal insulation layer 4 and the bulletproof steel plate layer 3; wherein, the adhesion protrusion 32 includes the connecting column and the body layer 31 integrally formed. The limit block is integrally formed with the connecting column. The limit block and the body layer 31 are located at different ends of the connecting column, and the diameter of the connecting column is smaller than the block diameter of the limit block. 2 or the heat insulating layer 4 can produce a certain pressing effect to further improve the adhesion between the thermal barrier layer 2 and the heat insulating layer 4 and the bulletproof steel plate layer 3 .

The specific parameters and preparation methods of the flame-resistant composite coating bulletproof steel plate are as follows:

1. Select the bulletproof steel plate layer 3 with a thickness of 5 mm for the body layer 31, and first pass the sandblasting and texturing to the surface of the bulletproof steel plate layer 3 to improve the adhesion of the surface of the bulletproof steel plate layer 3, and then use the plasma spraying technology to make the main components: The heat insulating agent of CrC-25NiCr ceramic is uniformly sprayed on the surface of the bulletproof steel plate layer 3 to form a thermal barrier layer 2, and the thickness of the thermal barrier layer 2 is 0.6 mm;

2. Mix 82% by weight of expanded graphite and inorganic adhesive to form a flame retardant, and then spray the flame retardant evenly on the surface of the cured thermal barrier layer 2 by means of compressed air high pressure spraying to form a flame retardant Layer 1, the thickness of the flame retardant layer 1 after curing is 1.3mm;

3. Mix 77% by weight of lightweight heat-resistant ceramic powder and inorganic adhesive to form a heat insulating agent, and then use compressed air high-pressure spraying to spray the heat insulating agent evenly on the elastic steel plate layer 3 Keep away from the thermal barrier layer A heat insulating layer 4 is formed on one surface of 2, and the thickness of the heat insulating layer 4 after curing is 0.9 mm.

A mechanical property test was carried out to the bulletproof steel plate layer 3 in Example 1-Example 5, and the data in the following table was obtained:

Table 1

serial number Tensile strength (MPa) Example 1 1500 Example 2 1420 Example 3 1630 Example 4 1480 Example 5 1506

From the test data in Table 1, it can be concluded that the tensile strength of the bulletproof steel plate layer 3 of the flame-cutting-resistant composite coating bulletproof steel sheet is all greater than 1400MPa, and the combination of thickness design makes the flame-cutting-resistant composite coating bulletproof steel sheet with Sufficient degree of protection to prevent bullet penetration.

5 pieces of flame-resistant composite coating bulletproof steel plates prepared in Example 1-Example 5 were subjected to a target test to obtain the data in the following table:

Table 2

From the test data in Table 2, it can be concluded that the flame-cutting-resistant composite coating bulletproof steel plate has sufficient structural strength, can resist the impact force of bullets under certain conditions, and can be applied to safes, ATMs and financial escort vehicles and other comprehensive protection.

The flame cutting test is carried out on the flame-resistant composite coating bulletproof steel sheets of Example 1-Example 5, and the data in the following table is obtained:

table 3

From the test data in Table 3, it can be concluded that the flame-resistant composite coating bulletproof steel plate has the performance of high-temperature cutting, mainly because the expanded graphite in the flame-retardant layer 1 will rapidly Expansion occurs, and its expanded volume can reach more than 200 times the initial volume, thus having a good thermal insulation effect; at the same time, the effective component CrC-25NiCr ceramics in the thermal barrier layer 2 can greatly reduce the thermal conductivity of the thermal barrier layer 2. The cutting heat source is separated from the bulletproof steel plate layer 3 .

The light-weight heat-resistant ceramic powder in Example 1-Example 5 is MgO ceramic powder, in order to reduce the influence degree of the flame-cutting-resistant composite coating bulletproof steel plate by high temperature and flame.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A fire-resistant composite coating bullet-proof steel plate, characterized in that, comprises a flame-retardant layer, a thermal barrier layer, a bullet-proof steel plate layer and a thermal insulation layer that are successively overlapped. 2 . The flame-cutting resistant composite coating bulletproof steel plate according to claim 1 , wherein the bulletproof steel plate layer comprises a body layer and attachment reinforcements disposed on both surfaces of the body layer. 3 . 3. The flame-resistant composite coating bulletproof steel plate according to claim 2, wherein the attachment reinforcement comprises a plurality of attachment grooves evenly distributed on the body layer and a plurality of attachment grooves arranged on two adjacent attachments. The attachment between the grooves protrudes. 4. The flame-cutting-resistant composite coating bulletproof steel plate according to claim 3, wherein the attachment protrusion comprises a connecting column integrally formed with the body layer and a limit block integrally formed with the connecting column. The position block and the body layer are located at different ends of the connecting column, and the diameter of the connecting column is smaller than the block diameter of the limiting block. 5. The flame-resistant composite coating bullet-proof steel plate according to any one of claims 1-4, wherein the thermal barrier layer is formed by passing plasma on the surface of the bullet-proof steel plate layer after sandblasting and texturing. Spraying technology sprays CrC-25NiCr ceramics. 6. The flame-resistant composite coating bulletproof steel plate according to any one of claims 1-4, wherein the flame retardant layer is a mixture of expanded graphite and inorganic adhesive by high-pressure spraying. The mixture is cured by spraying on the thermal barrier layer. 7 . The flame-cutting resistant composite coating bulletproof steel plate according to claim 6 , wherein the weight percentage of the expanded graphite in the mixture of the expanded graphite and the inorganic adhesive is 75%-85%. 8 . 8. The flame-resistant composite coating bulletproof steel plate according to any one of claims 1-4, wherein the heat insulating layer is made of light-weight heat-resistant ceramic powder and inorganic glue by high-pressure spraying The adhesive mixture is sprayed on the bulletproof steel sheet and cured. 9 . The flame-cutting-resistant composite coating bulletproof steel plate according to claim 8 , wherein: the weight of the light-weight heat-resistant ceramic powder in the mixture of the light-weight heat-resistant ceramic powder and the inorganic adhesive. 10 . The percentage is 75%-85%. 10 . The flame-cut resistant composite coating bulletproof steel plate according to claim 1 , wherein the tensile strength of the bulletproof steel plate layer is greater than 1400 MPa. 11 .

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