Concrete stubble blocking air bag airtight cloth and production method thereof

Abstract

The invention belongs to the technical field of concrete stubble blocking air bags, and particularly relates to a concrete stubble blocking air bag airtight cloth and a production method thereof. An aramid fiber layer is arranged above the base cloth; a wear-resistant layer is arranged above the aramid fiber layer; an airtight layer is arranged below the base cloth; the wear-resistant layer is made of chloroprene rubber; the base cloth is gridding cloth made of a polyester fiber material; the airtight layer is made of butyl rubber, during working, the outermost surface of the airtight layer is made of chloroprene rubber, concrete scouring, steel bar friction and environmental corrosion can be resisted, the high abrasion resistance is achieved, and the airtight layer is suitable for most building engineering environments; and finally, butyl rubber is adopted as the core sealing layer, so that the possibility of gas leakage is reduced, and the stability of the airtight cloth is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of concrete construction, and particularly relates to a concrete barrier air bag air-tight cloth and a production method thereof. BACKGROUND

[0002] The concrete barrier air bag is also called a concrete isolation air bag and a construction joint barrier air bag, and is a tool for temporarily separating different regions or labels during concrete pouring.

[0003] In a concrete construction project, different strength grades of concrete need to be poured, at which time the air bag can form a flexible separation belt to prevent low-strength concrete from flowing into a high-strength region, so as to ensure that the strength of concrete at each part meets the design requirements. In addition, the use of the concrete barrier air bag usually does not require the pre-installation of a complex formwork or the post-processing of excess concrete, the air bag can be flexibly adjusted in position according to the pouring progress, reduces the processes such as form removal and cleaning, and shortens the construction period.

[0004] The existing concrete barrier air bag is subjected to concrete scouring and environmental corrosion after long-term use, and the surface of the air-tight cloth is deformed, softened and damaged, so that the air bag loses its effect.

[0005] Therefore, the present application provides a concrete barrier air bag air-tight cloth and a production method thereof. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve the technical problems is that the present application provides a concrete barrier air bag air-tight cloth and a production method thereof, which comprises a base cloth, an aramid fiber layer arranged above the base cloth, a wear-resistant layer arranged above the aramid fiber layer, and an air-tight layer arranged below the base cloth. The wear-resistant layer is made of chloroprene rubber. The base cloth is a polyester fiber mesh cloth. The air-tight layer is made of butyl rubber.

[0008] Preferably, a buffer layer is arranged between the base cloth and the air-tight layer. The buffer layer is closed-cell polyethylene foam.

[0009] Preferably, an isolation layer is arranged between the buffer layer and the air-tight layer. The isolation layer is a fluororubber film. The isolation layer is resistant to acid and alkali with a pH value of 1-14.

[0010] Preferably, an anti-puncture layer is arranged between the wear-resistant layer and the aramid fiber layer. The anti-puncture layer is a carbon fiber mixed reinforcing sheet.

[0011] A production method of a concrete barrier air bag air-tight cloth, which is suitable for the concrete barrier air bag air-tight cloth described above, comprises the following steps: S1: first, the pretreated air-tight layer is placed on the workbench of the laminator, then a layer of adhesive is evenly coated on the surface of the air-tight layer, then the buffer layer is placed on the air-tight layer coated with the adhesive, the position of the buffer layer on the air-tight layer is positioned and fixed, and then it is ensured that the buffer layer is in close contact with the air-tight layer; S2: the surface of the buffer layer is evenly coated with adhesive, then the cut-off isolation layer is covered on the buffer layer, and the isolation layer and the buffer layer are firmly laminated together through the pressure and temperature effect of the laminator; then the surface of the isolation layer is evenly coated with adhesive, and the prepared base cloth is placed on the isolation layer for lamination operation; S3: the surface of the base cloth is coated with adhesive, the cut-off puncture-resistant layer is pasted on the surface of the base cloth, then the surface of the puncture-resistant layer is coated with adhesive again, and the final wear-resistant layer is covered on the uppermost layer, so that the whole air-tight cloth is firmly laminated together through the final lamination operation of the laminator, and finally the air-tight cloth is prepared Preferably, during the lamination process of the air-tight cloth, segmented coating is adopted, and drying is performed for 3-4 minutes after each coating, and the drying temperature is maintained at 40-55 DEG C.

[0012] Preferably, during the lamination process, the air-tight layer is fixed by vacuum adsorption, and the adsorption force is 0.05-0.1 MPa.

[0013] Preferably, in S3, after the wear-resistant layer is covered above the puncture-resistant layer, the surface of the wear-resistant layer is rolled by a rubber roller.

[0014] The beneficial effects of the present application are as follows: 1. The concrete stubble air bag air-tight cloth and the production method thereof can resist concrete scouring, steel bar friction and environmental corrosion by adopting neoprene rubber material on the surface of the air-tight cloth, have strong wear resistance, adapt to most construction engineering environments, provide main tensile strength by setting a polyester fiber mesh cloth, can maintain the stability of the air bag shape, and finally use butyl rubber as the core sealing layer to reduce the possibility of gas leakage and increase the stability of the air-tight cloth.

[0015] 2. The concrete stubble air bag air-tight cloth and the production method thereof set a buffer layer between the base cloth and the air-tight layer, utilize the characteristics of low density, light weight and strong compressive strength of the closed-cell polyethylene foam, buffer the pressure and keep warm and heat insulation during use of the air-tight cloth, reduce concrete temperature difference cracks, improve the compressive resistance of the air-tight cloth during use, and utilize the foam elasticity to compensate for the deformation of the air bag, thereby avoiding fatigue fracture of the fiber layer. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below with reference to the drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a flowchart of the method of the present invention; In the diagram: 11. Abrasion-resistant layer; 12. Aramid fiber layer; 13. Base fabric; 14. Airtight layer; 2. Buffer layer; 3. Isolation layer; 4. Puncture-resistant layer. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] like Figure 1 As shown in the embodiment of the present invention, an airtight fabric for concrete retaining walls and its production method include a base fabric 13; an aramid fiber layer 12 is provided on the top of the base fabric 13; a wear-resistant layer 11 is provided on the top of the aramid fiber layer 12; and an airtight layer 14 is provided below the base fabric 13. The wear-resistant layer 11 is made of neoprene rubber; the base fabric 13 is a polyester fiber mesh; and the airtight layer 14 is made of butyl rubber. The use of neoprene rubber on the outermost surface of the airtight fabric can resist concrete erosion, steel bar friction, and environmental corrosion, and has strong wear resistance, making it suitable for most construction engineering environments. At the same time, the polyester fiber mesh provides the main tensile strength, which can maintain the stability of the airbag shape. Finally, butyl rubber is used as the core sealing layer to reduce the possibility of gas leakage and increase the stability of the airtight fabric.

[0020] A buffer layer 2 is provided between the base fabric 13 and the airtight layer 14; the buffer layer 2 is closed-cell polyethylene foam. By setting a buffer layer 2 between the base fabric 13 and the airtight layer 14, the characteristics of closed-cell polyethylene foam, such as low density, light weight but high compressive strength, are utilized. During use, the airtight fabric uses the buffer layer 2 to buffer pressure and provide thermal insulation, reducing concrete temperature difference cracks and improving the compressive strength of the airtight fabric during use. At the same time, the elasticity of the foam compensates for the deformation of the airbag during inflation and deflation, avoiding fatigue fracture of the fiber layer.

[0021] An isolation layer 3 is provided between the buffer layer 2 and the airtight layer 14; the isolation layer 3 is a fluororubber film; the isolation layer 3 is resistant to acids and alkalis (pH 1-14). By utilizing the isolation properties of the fluororubber film, moisture corrosion is reduced, and the buffer layer 2 and the airtight layer 14 are isolated, reducing the risk of interface peeling due to large differences in thermal deformation between the buffer layer 2 and the airtight layer 14. Therefore, the buffer layer 2 and the airtight layer 14 are protected to ensure their stability during operation.

[0022] The anti-puncture layer 4 is a carbon fiber mixed reinforcing sheet, and the anti-puncture layer 4 is added to the vulnerable area of the air bag, so that the puncture resistance of the air tight cloth is improved, and the safety of the air tight cloth during work is maintained.

[0023] As shown in Figure 2 A production method of the concrete stubble air bag air tight cloth, the production method is suitable for the above-mentioned concrete stubble air bag air tight cloth, and the production method comprises the following steps. S1: first, the pretreated air tight layer 14 is placed on the workbench of the compound machine, then a layer of adhesive is uniformly coated on the surface of the air tight layer 14, then the buffer layer 2 is placed on the air tight layer 14 coated with the adhesive, the position of the buffer layer 2 on the air tight layer 14 is positioned and fixed, and then it is ensured that the buffer layer 2 and the air tight layer 14 are in close contact. S2: uniformly coat the adhesive on the surface of the buffer layer 2, then cover the cut isolation layer 3 on the buffer layer 2, and make the isolation layer 3 and the buffer layer 2 firmly compound together through the pressure and temperature action of the compound machine; then uniformly coat the adhesive on the surface of the isolation layer 3, and place the prepared base cloth 13 on the isolation layer 3 for compounding operation. S3: coat the adhesive on the surface of the base cloth 13, paste the cut anti-puncture layer 4 on the surface of the base cloth 13, then coat the adhesive again on the surface of the anti-puncture layer 4, cover the last wear-resistant layer 11 on the uppermost layer, and make the layers of the whole air tight cloth firmly compound together through the final compounding operation of the compound machine, and finally obtain the air tight cloth.

[0024] In the compounding process of the air tight cloth, sectional coating is adopted, and drying is performed for 3-4 minutes after each section is coated, and the drying temperature is maintained at 40-55 DEG C. By adopting sectional coating and drying after each compounding, the problems of adhesive accumulation and flowing to the table top can be reduced, and the compounding flatness is improved.

[0025] In the compounding process, the air tight layer 14 is fixed by vacuum adsorption, and the adsorption force is 0.05-0.1 MPa. By using the vacuum adsorption mode, the stability of the bottom layer of the air tight cloth is increased in the compounding process, so that the compounding process of each layer of the air tight cloth is more stable and flat, and the deviation of the air tight cloth structure in the compounding process is reduced.

[0026] In S3, after the wear-resistant layer 11 is covered above the anti-puncture layer 4, a rubber roller is used to roll the surface of the wear-resistant layer 11. By rolling the air tight cloth during the final compounding, the excess air contained in each layer is removed, and the bonding density is improved.

[0027] The working principle is that chloroprene rubber material is used on the surface of the airproof cloth, which can resist concrete erosion, steel bar friction and environmental corrosion, has strong wear resistance, is suitable for most construction engineering environments, provides main tensile strength by setting a polyester fiber material mesh cloth, can maintain the stability of the air bag shape, finally uses butyl rubber as the core sealing layer to reduce the possibility of gas leakage and increase the stability of the airproof cloth. By setting a buffer layer 2 between the base cloth 13 and the airproof layer 14, the low density, light weight and strong compression strength of the closed-cell polyethylene foam are used to make the airproof cloth buffer the pressure and keep warm and insulated during use, reduce concrete temperature difference cracks, improve the compression resistance of the airproof cloth during use, avoid fiber layer fatigue fracture by using foam elasticity to compensate for the deformation of the air bag, reduce moisture corrosion by using the isolation performance of the fluororubber film, isolate the buffer layer 2 and the airproof layer 14, reduce the risk of interface peeling between the buffer layer 2 and the airproof layer 14 due to large deformation difference caused by heating, and thus realize the protection effect of the stability of the buffer layer 2 and the airproof layer 14 during work. The anti-puncture layer 4 is added to the vulnerable area of the air bag to improve the puncture resistance of the airproof cloth and maintain the safety of the airproof cloth during work. By using segmented coating and drying after each compounding, the problems of adhesive accumulation and flowing to the table surface are reduced, the compounding flatness is improved, the stability of the airproof cloth bottom layer is increased during compounding by using vacuum adsorption, and the compounding process of each layer of the airproof cloth is more stable and flat, the deviation of the airproof cloth structure during compounding is reduced, and the air in each layer is removed by rolling the airproof cloth during the last compounding to improve the bonding density.

[0028] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A concrete barrier air cell air tight membrane and method of production thereof characterised by: It comprises a base cloth (13); an aramid fiber layer (12) is arranged above the base cloth (13); a wear-resistant layer (11) is arranged above the aramid fiber layer (12); a gas-tight layer (14) is arranged below the base cloth (13); the wear-resistant layer (11) is made of chloroprene rubber; the base cloth (13) is made of polyester fiber mesh; and the gas-tight layer (14) is made of butyl rubber.

2. A concrete stubble airbag air tight fabric according to claim 1, characterized in that: A buffer layer (2) is arranged between the base cloth (13) and the gas-tight layer (14); and the buffer layer (2) is made of closed-cell polyethylene foam.

3. A concrete stubble airbag air tight fabric according to claim 2, characterized in that: An isolation layer (3) is arranged between the buffer layer (2) and the gas-tight layer (14); the isolation layer (3) is made of fluororubber film; and the isolation layer (3) is resistant to acid and alkali with a pH value of 1-14.

4. A concrete mulch air cell air tight membrane and method of manufacture according to claim 3 wherein: An anti-puncture layer (4) is arranged between the wear-resistant layer (11) and the aramid fiber layer (12); and the anti-puncture layer (4) is made of carbon fiber mixed reinforcing sheet.

5. A method of producing a concrete fender air cell air tight fabric, characterized by: The production method is suitable for the concrete stubble air bag gas-tight cloth according to any one of claims 1-4. The production method comprises the following steps. S1: first, place the pretreated gas-tight layer (14) on the workbench of a laminator, then uniformly coat a layer of adhesive on the surface of the gas-tight layer (14), then place the buffer layer (2) on the gas-tight layer (14) coated with adhesive, position and fix the position of the buffer layer (2) on the gas-tight layer (14), and then ensure that the buffer layer (2) and the gas-tight layer (14) are in close contact; S2: uniformly coat adhesive on the surface of the buffer layer (2), then cover the cut isolation layer (3) on the buffer layer (2), and make the isolation layer (3) and the buffer layer (2) firmly composite together through the pressure and temperature action of the laminator; then uniformly coat adhesive on the surface of the isolation layer (3), and place the prepared base cloth (13) on the isolation layer (3) for composite operation; S3: coat adhesive on the surface of the base cloth (13), paste the cut anti-puncture layer (4) on the surface of the base cloth (13), then coat adhesive again on the surface of the anti-puncture layer (4), cover the final wear-resistant layer (11) on the uppermost layer, and make the layers of the entire gas-tight cloth firmly composite together through the final composite operation of the laminator, and finally obtain the gas-tight cloth.

6. A concrete mulch air cell air tight membrane and method of manufacture according to claim 5 wherein: During the composite process of the gas-tight cloth, sectional coating is adopted, and drying is performed for 3-4 minutes after each section is coated, and the drying temperature is maintained at 40-55 degrees Celsius.

7. A concrete mulch air cell air tight membrane and method of manufacture according to claim 6 wherein: During the composite process, the gas-tight layer (14) is fixed by vacuum adsorption with an adsorption force of 0.05-0.1 MPa.

8. A concrete mulch air cell air tight membrane and method of manufacture according to claim 7 wherein: In S3, after the wear-resistant layer (11) is covered above the anti-puncture layer (4), the surface of the wear-resistant layer (11) is rolled by a rubber roller.

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