Self-edge-sealing foaming polymer plate

Abstract

The utility model relates to a self-edge-sealing foaming polymer plate which is of a sandwich structure and comprises an upper layer, a core layer and a lower layer, the upper layer is a first aluminum plate (1), and the core layer comprises a first glass fiber reinforcing belt (2), a foaming core (3) and a second glass fiber reinforcing belt (4); the lower layer is a second aluminum plate (5); the area of the upper layer and the lower layer is larger than that of the core layer, and the edges of the upper layer and the lower layer completely cover the core layer after being folded. According to the utility model, the whole core layer can be completely wrapped and sealed, the weather resistance is better, and the condition of hydrolysis after water enters the core layer is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic backboards, in particular to a self-sealing edge foaming polymer board. Background Art

[0002] When foamed polymer sheets are used as lightweight photovoltaic backsheets / bottom sheets, if the edges are not completely sealed, the foam core will be in contact with water vapor for a long time, causing severe hydrolysis in a high temperature and high humidity environment, greatly reducing the product's bending strength and supporting rigidity, seriously affecting the service life of photovoltaic modules.

[0003] At present, waterproof butyl tape is used to seal the edges. This method requires a lot of manpower for manual edge sealing, and the edge sealing can only be done after the back panel assembly is laminated. This greatly increases the risk of hidden cracks and failures of the battery cell assembly caused by the edge sealing process. After the edge sealing is completed, a frame must be assembled to effectively protect the butyl tape.

[0004] CN108242473B uses thermoplastic materials to bond and compound the edges of the materials before cutting the foamed / honeycomb panels. This solution has the following defects: after cutting, it will cause edge collapse, gaps, and other inaccurate edge sealing due to poor cutting. In addition, the 90° right-angle side edges of the edges cannot be effectively connected and sealed with the upper and lower plane seams, which is also one of the ways for subsequent water vapor to enter.

[0005] CN116534349A uses hot air heating to seal and coat the periphery of the skeleton core layer, but has poor temperature resistance and is prone to debonding when used in a high temperature environment, causing the edge band to fall off.

[0006] Therefore, it is necessary to study an effective protective measure to block water vapor on the edges and upper and lower layers to avoid material degradation after water vapor penetration during use. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide a self-sealing edge foamed polymer plate. The utility model can make the core layer completely wrapped and sealed as a whole, with better weather resistance, and greatly reduce the hydrolysis after water enters the interior.

[0008] The utility model provides a self-sealing edge foamed polymer board, which is a sandwich structure, comprising an upper layer, a core layer and a lower layer; the upper layer is a first aluminum plate, the core layer comprises a first glass fiber reinforced tape, a foamed core and a second glass fiber reinforced tape; the lower layer is a second aluminum plate; the areas of the upper layer and the lower layer are both larger than the area of ​​the core layer, and the edges of the upper layer and the lower layer are folded over to completely cover the core layer.

[0009] Furthermore, the first aluminum plate is a microporous aluminum plate, which has the functions of sound insulation, heat preservation, sound absorption and noise reduction.

[0010] Furthermore, the second aluminum plate is a low-gloss aluminum plate, which has the function of preventing glare.

[0011] Furthermore, the area of ​​the upper layer is smaller than that of the lower layer.

[0012] Furthermore, the upper layer, the core layer and the lower layer are bonded together by a building material sealant.

[0013] Furthermore, the board materials are laminated at high temperature.

[0014] Beneficial Effects

[0015] (1) The utility model can completely wrap and seal the core layer as a whole, improve weather resistance, and greatly reduce the possibility of hydrolysis after water enters the interior.

[0016] (2) The utility model no longer needs to use an aluminum alloy frame for protection and sealing at the edge, thereby reducing costs.

[0017] (3) The utility model uses common building material sealant, which is cheap, can achieve edge sealing at room temperature, and has excellent outdoor weather resistance for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural explosion diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the utility model.

[0020] Figure 3 It is a use state diagram and a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0022] Example 1

[0023] Depend on Figure 1-3 As shown, an embodiment of the utility model relates to a self-sealing edge foamed polymer board, which is a sandwich structure, including an upper layer, a core layer and a lower layer; the upper layer is a first aluminum plate 1, and the core layer includes a first glass fiber reinforced tape 2, a foaming core 3 and a second glass fiber reinforced tape 4; the lower layer is a second aluminum plate 5; the areas of the upper layer and the lower layer are both larger than the area of ​​the core layer, and the edges of the upper layer and the lower layer are folded to completely cover the core layer.

[0024] Furthermore, the first aluminum plate 1 is a microporous aluminum plate, and the second aluminum plate 5 is a low-gloss aluminum plate.

[0025] The embodiment of the utility model relates to a method for using a self-sealing edge foamed polymer sheet, comprising the following steps: 1. placing the foam core in the center, and using a film to press the upper layer, the core layer and the lower layer in sequence. Figure 2 The stacking sequence shown is arranged and laminated at high temperature by a laminator;

[0026] 2. Use 90° scissors to cut the edge of the first aluminum plate 1;

[0027] 3. Use scissors to cut the edge of the second aluminum plate 5;

[0028] 4. Place the plate flat on the platform of the automatic edge banding machine, with the first aluminum plate 1 facing downward, grab the plate with a mechanical arm, and position the plate on the platform of the edge banding machine under negative pressure and vacuum for fixation;

[0029] 5. The folding plate is lifted upward by rotating the rotating arm, and the limit block of the rotating arm is limited to 90°. In this way, the exposed part of one side of the first aluminum plate 1 is bent 90°. After the bending is completed, the mechanical arm grabs the plate and rotates the plane 90°, and then bends the other side in sequence; repeat the above actions until the folding of the four sides is completed;

[0030] 6. After the first aluminum plate 1 is completed, turn the plate over, place the second aluminum plate 5 face down on the platform of the automatic edge banding machine, and apply structural glue around the exposed edge of the second aluminum plate 5;

[0031] 7. Grab the plate with the robotic arm and fix it on the edge banding machine platform under negative pressure vacuum;

[0032] 8. Adjust the hole adjustment plate of the folding plate, rotate the rotating arm, lift the folding plate upward, and bend the exposed part of the long side of the second aluminum plate 5 by 90°. After completion, the robotic arm rotates the plane of the plate by 90° and bends the four sides in turn until completion.

[0033] 9. Use the robotic arm to rotate the plate inside and place it on the table of the automatic edge banding machine, and then bend the four corners in the same way;

[0034] 10. The sealant (silicone glue) on the edge of the second aluminum plate 5 needs to be stored at room temperature with ventilation. After curing for 24 hours, the entire edge sealing process is completed.

Claims

1. A self-sealing edge foamed polymer sheet, the sheet having a sandwich structure, comprising an upper layer, a core layer and a lower layer; characterized in that: The upper layer is a first aluminum plate (1), and the core layer comprises a first glass fiber reinforced tape (2), a foamed core (3), and a second glass fiber reinforced tape (4); the lower layer is a second aluminum plate (5); the areas of the upper layer and the lower layer are both larger than the area of ​​the core layer, and the edges of the upper layer and the lower layer are folded over to completely cover the core layer.

2. The self-sealing edge foamed polymer sheet according to claim 1, characterized in that: The first aluminum plate (1) is a microporous aluminum plate.

3. The self-sealing edge foamed polymer sheet according to claim 1, characterized in that: The second aluminum plate (5) is a low-gloss aluminum plate.

4. The self-sealing edge foamed polymer sheet according to claim 1, characterized in that: The area of ​​the upper layer is smaller than that of the lower layer.

5. The self-sealing edge foamed polymer sheet according to claim 1, characterized in that: The upper layer, the core layer and the lower layer are bonded together by building material sealant.

6. The self-sealing edge foamed polymer sheet according to claim 1, characterized in that: The panels are laminated at high temperature.

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