A PE plate hot pressing process using PE cloth and stainless steel mesh film composite

Abstract

The application discloses a PE plate hot-pressing process by adopting PE cloth and stainless steel net film compound, comprising the following steps: (1) cutting PE cloth; (2) cutting stainless steel net and high-performance polyurethane film; (3) stacking according to the rule of every same layer PE cloth interval 1 layer stainless steel net and 1 layer high-performance polyurethane film; (4) wrapping the obtained sample block with isolation film; (5) putting the sample block into the pressing block of hydraulic machine for hot-pressing lamination; (6) increasing the pressing block temperature to 100 DEG C, increasing the pressure from 0 to 5 MPa, keeping for 30 s, then reducing the pressure to 0, keeping for 15 s, then increasing the pressure to 5 MPa again, repeating twice; (7) increasing the pressing block temperature to 130 DEG C, increasing the pressure to 10 MPa at 110 DEG C, increasing the pressure to 15 MPa at 120 DEG C, increasing the pressure to 20 MPa at 130 DEG C, keeping for 30 min; (8) reducing the pressing block temperature to obtain the PE plate. The application improves the deformation resistance of the PE plate.

Description

Technical Field

[0001] This invention relates to the field of composite material preparation technology, specifically to a hot-pressing process for PE boards that combines PE cloth with stainless steel mesh film. Background Technology

[0002] Ultra-high molecular weight polyethylene (PE) is a high-performance organic fiber and one of the world's three major high-tech fibers. Due to its excellent properties such as ultra-high stability, low-temperature resistance, UV resistance, and water resistance, it is an ideal bulletproof material. However, PE has poor high-temperature resistance and poor deformation resistance, easily deforming under continuous pressure. Therefore, these problems urgently need to be addressed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a hot-pressing process for PE board using PE cloth and stainless steel mesh film composite. The PE board prepared by this process has excellent performance. By adding stainless steel mesh and high-performance polyurethane film to the lamination, the deformation resistance of the hot-pressed composite PE board is improved.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The innovation of the present invention lies in the following steps: A hot-pressing process for PE board composite material consisting of PE cloth and stainless steel mesh film.

[0005] Step 1: Cut multiple layers of PE fabric to a size of 300mm*300mm;

[0006] Step 2: Cut the multi-layer stainless steel mesh and multi-layer high-performance polyurethane film, ensuring that both the stainless steel mesh and the high-performance polyurethane film are consistent with the specifications of the PE cloth.

[0007] Step 3: Following the pattern of alternating one layer of stainless steel mesh and one layer of high-performance polyurethane film between each layer of PE cloth of the same number, stack the PE cloth, stainless steel mesh, and high-performance polyurethane film evenly and neatly in layers.

[0008] Step 4: Wrap the stacked PE cloth, stainless steel mesh and high-performance polyurethane film with a release film to obtain a sample block;

[0009] Step 5: Place the wrapped sample block between the two pressure blocks of the hydraulic press for hot pressing and lamination;

[0010] Step 6: First, raise the temperature of the briquette from room temperature to 100℃, and gradually increase the pressure from 0MPa to 5MPa in stages. After holding for 30 seconds, release the pressure to 0MPa, and then hold for 15 seconds before increasing the pressure to 5MPa again. Repeat this action twice.

[0011] Step 7: Then raise the temperature of the briquette from 100℃ to 130℃, and increase the pressure to 10MPa when the temperature reaches 110℃, increase the pressure to 15MPa when the temperature reaches 120℃, and increase the pressure to 20MPa when the temperature reaches 130℃, and maintain the pressure for 30 minutes.

[0012] Step 8: Turn on the cooling to cool the block down, then open the block and take out the sample to obtain the hot-pressed composite PE board.

[0013] Preferably, in step one above, the PE cloth is selected as ultra-high molecular weight polyethylene unidirectional UD coated cloth.

[0014] Preferably, in step two above, the stainless steel mesh is a 20-80 mesh stainless steel woven mesh.

[0015] Preferably, in step two above, the thickness of the high-performance polyurethane film is 0.05mm to 0.2mm.

[0016] Preferably, in step three above, the number of layers of the PE fabric on both the uppermost and lowermost sides is 3.

[0017] Preferably, in step four above, the separating membrane needs to be flat and resistant to high temperatures, and it needs to be guaranteed not to stick to the material.

[0018] Preferably, in step five above, the sample block and the hydraulic press block need to be separated by a Teflon film to prevent the material from sticking to the block mold and becoming unable to separate.

[0019] Preferably, in step eight above, the pressure needs to be maintained at 20 MPa during the cooling process, and the pressure needs to be reduced to 0 MPa when the temperature of the compressed block drops to 40°C.

[0020] The beneficial effects of this invention are:

[0021] (1) The preparation process of this invention is simple, easy to operate, has a short production cycle, and is highly efficient;

[0022] (2) The PE board prepared by the present invention has excellent performance. By adding stainless steel mesh and high-performance polyurethane film, the deformation resistance of the hot-pressed composite PE board is improved. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flow chart of the hot pressing process of a PE board using a composite PE cloth and stainless steel mesh film according to the present invention. Detailed Implementation

[0025] The technical solution of the present invention will be clearly and completely described below through specific embodiments.

[0026] This invention relates to a hot-pressing process for PE boards that combines PE cloth with stainless steel mesh film, such as... Figure 1 As shown, it includes the following steps:

[0027] Step 1: Cut multiple layers of PE fabric to a size of 300mm*300mm;

[0028] In the above steps, the PE cloth used is ultra-high molecular weight polyethylene unidirectional UD coated cloth.

[0029] Step 2: Cut the multi-layer stainless steel mesh and multi-layer high-performance polyurethane film, ensuring that both the stainless steel mesh and the high-performance polyurethane film are consistent with the specifications of the PE cloth.

[0030] In the above steps, the stainless steel mesh is selected from 20-80 mesh stainless steel woven mesh, and the thickness of the high-performance polyurethane film is 0.05mm-0.2mm.

[0031] Step 3: Following the pattern of alternating one layer of stainless steel mesh and one layer of high-performance polyurethane film between each layer of PE cloth of the same number, stack the PE cloth, stainless steel mesh, and high-performance polyurethane film evenly and neatly in layers.

[0032] In the above steps, the number of PE fabric layers on both the top and bottom sides is 3.

[0033] Step 4: Wrap the stacked PE cloth, stainless steel mesh and high-performance polyurethane film with a release film to obtain a sample block;

[0034] In the above steps, the release film must be flat and heat-resistant, and must be guaranteed not to stick to the material.

[0035] Step 5: Place the wrapped sample block between the two pressure blocks of the hydraulic press for hot pressing and lamination;

[0036] In the above steps, a Teflon film must be used to separate the sample block from the hydraulic press block to prevent the material from sticking to the block mold and becoming unable to separate.

[0037] Step 6: First, raise the temperature of the briquette from room temperature to 100℃, and gradually increase the pressure from 0MPa to 5MPa in stages. After holding for 30 seconds, release the pressure to 0MPa, and then hold for 15 seconds before increasing the pressure to 5MPa again. Repeat this action twice.

[0038] Step 7: Then raise the temperature of the briquette from 100℃ to 130℃, and increase the pressure to 10MPa when the temperature reaches 110℃, 15MPa when the temperature reaches 120℃, and 20MPa when the temperature reaches 130℃, and maintain the pressure for 30 minutes.

[0039] Step 8: Turn on the cooling to cool the block down, then open the block and take out the sample to obtain the hot-pressed composite PE board;

[0040] In the above steps, the pressure must be maintained at 20MPa during the cooling process, and the pressure must be reduced to 0MPa when the temperature of the compressed block drops to 40℃. Example 1

[0041] This invention relates to a hot-pressing process for PE boards that combines PE cloth with stainless steel mesh film, such as... Figure 1 As shown, it includes the following steps:

[0042] Step 1: Cut 22 layers of PE fabric with dimensions of 300mm*300mm;

[0043] Step 2: Cut 5 layers of stainless steel mesh and 5 layers of 0.15mm thick high-performance polyurethane film, ensuring that the stainless steel mesh and high-performance polyurethane film are consistent with the specifications of the PE cloth.

[0044] Step 3: Following the pattern of alternating every 4 layers of PE cloth with 1 layer of stainless steel mesh and 1 layer of high-performance polyurethane film, stack the PE cloth, stainless steel mesh and high-performance polyurethane film evenly and neatly in layers, ensuring that the top and bottom layers are 3 layers of PE cloth respectively.

[0045] Step 4: Wrap the stacked PE cloth, stainless steel mesh and high-performance polyurethane film with a release film to obtain a sample block;

[0046] Step 5: Place the wrapped sample block between the two pressure blocks of the hydraulic press, and separate the sample block from the pressure blocks of the hydraulic press with a Teflon film to prevent the material from sticking to the pressure block mold and becoming unable to separate.

[0047] Step 6: First, raise the temperature of the briquette from room temperature to 100℃, and gradually increase the pressure from 0MPa to 5MPa in stages. After holding for 30 seconds, release the pressure to 0MPa, and then hold for 15 seconds before increasing the pressure to 5MPa again. Repeat this action twice.

[0048] Step 7: Then raise the temperature of the briquette from 100℃ to 130℃, and increase the pressure to 10MPa when the temperature reaches 110℃, increase the pressure to 15MPa when the temperature reaches 120℃, and increase the pressure to 20MPa when the temperature reaches 130℃, and maintain the pressure for 30 minutes.

[0049] Step 8: Turn on the cooling to cool down the block. During the cooling process, the pressure must be maintained at 20MPa, and when the block temperature drops to 40℃, the pressure must be reduced to 0MPa. Then open the block and take out the sample block to obtain the hot-pressed composite PE board.

[0050] The beneficial effects of this invention are:

[0051] (1) The preparation process of this invention is simple, easy to operate, has a short production cycle, and is highly efficient;

[0052] (2) The PE board prepared by the present invention has excellent performance. By adding stainless steel mesh and high-performance polyurethane film, the deformation resistance of the hot-pressed composite PE board is improved.

[0053] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, all modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the technical requirements.

Claims

1. A PE plate hot-pressing process using PE cloth and a film composite with a stainless steel mesh, characterized by Includes the following steps: Step 1: Cut multiple layers of PE fabric to a size of 300mm*300mm; Step 2: Cut the multi-layer stainless steel mesh and multi-layer high-performance polyurethane film, ensuring that both the stainless steel mesh and the high-performance polyurethane film are consistent with the specifications of the PE cloth. Step 3: Following the pattern of alternating one layer of stainless steel mesh and one layer of high-performance polyurethane film between each layer of PE cloth of the same number, stack the PE cloth, stainless steel mesh, and high-performance polyurethane film evenly and neatly in layers. Step 4: Wrap the stacked PE cloth, stainless steel mesh and high-performance polyurethane film with a release film to obtain a sample block; Step 5: Place the wrapped sample block between the two pressure blocks of the hydraulic press for hot pressing and lamination; Step 6: First, raise the temperature of the briquette from room temperature to 100℃, and gradually increase the pressure from 0MPa to 5MPa in stages. After holding for 30 seconds, release the pressure to 0MPa, and then hold for 15 seconds before increasing the pressure to 5MPa again. Repeat this action twice. Step 7: Then raise the temperature of the briquette from 100℃ to 130℃, and increase the pressure to 10MPa when the temperature reaches 110℃, increase the pressure to 15MPa when the temperature reaches 120℃, and increase the pressure to 20MPa when the temperature reaches 130℃, and maintain the pressure for 30 minutes. Step 8: Turn on the cooling to cool the block down, then open the block and take out the sample to obtain the hot-pressed composite PE board.

2. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step one above, the PE cloth is selected as ultra-high molecular weight polyethylene unidirectional UD coated cloth.

3. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step two above, the stainless steel mesh is selected from 20-80 mesh stainless steel woven mesh.

4. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step two above, the thickness of the high-performance polyurethane film is 0.05mm to 0.2mm.

5. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step three above, the PE fabric on both the top and bottom sides has three layers.

6. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step four above, the separating membrane must be flat and resistant to high temperatures, and must be guaranteed not to stick to the material.

7. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step five above, the sample block and the hydraulic press block need to be separated by a Teflon film to prevent the material from sticking to the block mold and becoming unable to separate.

8. The hot-pressing process for PE board composite with PE cloth and stainless steel mesh film according to claim 1, characterized in that: In step eight above, the pressure must be maintained at 20 MPa during the cooling process, and when the temperature of the compressed block drops to 40°C, the pressure must be reduced to 0 MPa.

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