Method for preparing rough-surface adhesive film, rough-surface adhesive film and prefabricated component

Abstract

The present invention discloses a method for preparing a concave-convex rough surface adhesive film, a concave-convex rough surface adhesive film and a prefabricated component. The preparation method comprises: determining a first particle and a second particle of the concave-convex rough surface according to experimental tests, and determining the size of the first particle and the size of the second particle; drawing a rough surface drawing corresponding to the concave-convex rough surface according to the size of the first particle and the size of the second particle; using a CNC engraving machine, processing the concave-convex rough surface on a polyurethane resin adhesive according to the rough surface drawing to obtain the concave-convex rough surface adhesive film. The concave-convex rough surface adhesive film prepared by the present invention comprises a first particle and a second particle, so that a concrete rough surface with stronger bonding force can be made by the concave-convex rough surface adhesive film, and a non-hydrophobic effect can be achieved, meeting the use requirements.

Description

Technical Field

[0001] The invention relates to the technical field of rough surface molding, and in particular to a method for preparing a concave-convex rough surface adhesive film, a concave-convex rough surface adhesive film and a prefabricated component. Background Art

[0002] At the interface between new and old concrete, rough treatment is generally required. Common methods include exposed aggregate method, roughening method, axe chiseling method, etc. The purpose is to improve the bonding strength between new and old concrete and prevent cracking caused by poor bonding between new and old concrete. In the treatment process, exposed aggregate agents or tools will be used, but the existing rough treatment methods are prone to cause sewage, dust and other environmentally unfriendly and energy-saving phenomena, and the efficiency is also low.

[0003] Therefore, the prior art still needs to be improved and enhanced. Summary of the invention

[0004] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a method for preparing a rough-surface adhesive film, a rough-surface adhesive film and a prefabricated component are provided, aiming to solve the problem that the existing rough treatment method is prone to cause sewage, dust and other environmentally unfriendly and energy-saving phenomena, and the efficiency is also low.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, the present invention provides a method for preparing a rubber film with a concave-convex rough surface, wherein the preparation method comprises:

[0007] Determine the first particles and the second particles of the concavo-convex rough surface according to experimental tests, and determine the size of the first particles and the size of the second particles;

[0008] Draw a rough surface drawing corresponding to the concave-convex rough surface according to the size of the first particles and the size of the second particles;

[0009] The concave-convex rough surface is processed on the polyurethane resin glue according to the rough surface drawing by using a numerical control engraving machine to obtain the concave-convex rough surface glue film.

[0010] In one implementation, the first particles and the second particles are both in the shape of gravel, and the first particles appear to be concave on the rough-surfaced rubber film.

[0011] In one implementation, the first particles have a diameter of 3-20 mm and a depth of 4-8 mm.

[0012] In one implementation, the second particles are located in an aggregate-free region on the polyurethane resin glue, the diameter of the second particles is smaller than the diameter of the first particles, and the size of the second particles is 0.5-3 mm in height.

[0013] In one implementation, the number of the second particles is greater than the number of the first particles, and a plurality of second particles are arranged around one first particle.

[0014] In one implementation, the Shore hardness of the polyurethane resin glue is (A) 70-90, the tensile strength of the polyurethane resin rubber is 30MPa-60MPa, and the elongation at break of the polyurethane resin is 445%-600%.

[0015] In the second aspect, an embodiment of the present invention also provides a rough-surfaced adhesive film prepared based on any of the above-mentioned rough-surfaced adhesive film preparation methods, wherein the rough-surfaced adhesive film uses polyurethane resin glue as a carrier; first particles and second particles are arranged on the polyurethane resin glue; the first particles and the second particles are both in the shape of gravel, and the first particles appear concave on the rough-surfaced adhesive film; the number of the second particles is greater than the number of the first particles, and multiple second particles are arranged around one first particle.

[0016] In one implementation, the first particles have a diameter of 3-20 mm and a depth of 4-8 mm.

[0017] In one implementation, the diameter of the second particle is smaller than the diameter of the first particle, and the size of the second particle is 0.5-3 mm in height.

[0018] In a third aspect, an embodiment of the present invention further provides a prefabricated component made of a rubber film with a concave-convex rough surface based on any one of the above items, wherein a concrete rough surface is formed on the prefabricated component, and the concrete rough surface is formed by pouring concrete on the rubber film with a concave-convex rough surface;

[0019] The first particles on the uneven rough surface adhesive film appear to be convex on the rough concrete surface;

[0020] The second particles on the uneven rough surface adhesive film appear to be concave on the rough surface of the concrete.

[0021] Beneficial effects: Compared with the prior art, the present invention provides a method for preparing a concave-convex rough surface adhesive film, the preparation method comprising: determining the first particle and the second particle of the concave-convex rough surface according to experimental tests, and determining the size of the first particle and the size of the second particle; drawing a rough surface drawing corresponding to the concave-convex rough surface according to the size of the first particle and the size of the second particle; using a CNC engraving machine, processing the concave-convex rough surface on a polyurethane resin adhesive according to the rough surface drawing to obtain the concave-convex rough surface adhesive film. The concave-convex rough surface adhesive film prepared by the present invention comprises the first particle and the second particle, so that a concrete rough surface with stronger bonding force can be made by the concave-convex rough surface adhesive film, and a non-hydrophobic effect can be achieved to meet the use requirements, and the rough surface of concrete made by the concave-convex rough surface adhesive film can effectively improve the rough treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A flowchart of a specific implementation method of a method for preparing a rough-surfaced adhesive film provided in an embodiment of the present invention.

[0023] Figure 2 A schematic diagram of the structure of a rubber film with a concave-convex rough surface provided by an embodiment of the present invention.

[0024] Description of labels:

[0025] Carrier 10 The first particle 20 The second particle 30 DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] In concrete components, the joints between prefabricated components and cast-in-place components need to be roughened. There are several common methods. The first method is to add a retarder when making prefabricated components, so that the prefabricated components can maintain plasticity for a long time, which requires increased time and production costs; the second method is to roughen the surface of the prefabricated components to improve the bonding strength of the joint surface and prevent cracking of new and old concrete, which requires increased labor costs; the third method is to place the prefabricated components in a mold to be prefabricated, and then rinse them with water after forming, so that the surface of the prefabricated components is rinsed into an uneven state, so as to improve the bonding strength of the joint surface. However, the existing roughening methods are prone to cause sewage, dust and other environmentally unfriendly and energy-saving phenomena, and the efficiency is also low.

[0030] In order to solve the problems of the prior art, the present embodiment provides a method for preparing a rough-surface adhesive film. Through the method for preparing a rough-surface adhesive film of the present embodiment, a rough concrete surface with stronger bonding force can be made, and a non-hydrophobic effect can be achieved to meet the use requirements. Moreover, the rough concrete surface made by the rough-surface adhesive film can effectively improve the rough treatment efficiency.

[0031] When implementing it, Figure 1 As shown in the figure, the method for preparing the rough surface adhesive film of the embodiment includes the following steps:

[0032] Step S100, determining the first particles and the second particles of the concavo-convex rough surface according to experimental tests, and determining the size of the first particles and the size of the second particles;

[0033] Step S200, drawing a rough surface drawing corresponding to the concave-convex rough surface according to the size of the first particles and the size of the second particles;

[0034] Step S300: using a CNC engraving machine to process the concave-convex rough surface on the polyurethane resin glue according to the rough surface drawing to obtain the concave-convex rough surface glue film.

[0035] Specifically, in this embodiment, a carrier 10 is first selected, such as Figure 2 As shown in , this embodiment uses polyurethane resin glue as a carrier 10, the Shore hardness of the polyurethane resin glue is (A) 70-90, the tensile strength of the polyurethane resin rubber is 30MPa-60MPa, and the elongation at break of the polyurethane resin is 445%-600%. By setting a concave-convex rough surface on the polyurethane resin glue, a concave-convex rough surface glue film is formed. The concave-convex rough surface to be formed in this embodiment includes a first particle 20 and a second particle 30. After the concave-convex rough surface glue film is made, in actual use, after the concave-convex rough surface glue film is fixed at a corresponding position, it is only necessary to pour concrete. After the concrete pouring is completed, the concave-convex rough surface is removed, and a concrete rough surface is formed on the concrete.

[0036] In this embodiment, when polyurethane resin glue is selected as the carrier 10, the first particles 20 and the second particles 30 of the concave-convex rough surface are determined according to experimental tests, and the size of the first particles 20 and the size of the second particles 30 are determined. In specific implementation, the size of the first particles 20 in this embodiment is 3-20mm in diameter and 4-8mm in depth. The size of the second particles 30 is 0.5-3mm in height. Figure 2 As shown in , the size of the first particle 20 is larger than that of the second particle 30. The first particle 20 is in the shape of gravel, and the second particle 30 is in the shape of small gravel. Of course, the sizes of the first particle 20 and the second particle 30 can be selected according to needs, and this embodiment does not limit this.

[0037] In one implementation, Figure 2 As shown in the figure, the first particles 20 in this embodiment are in the shape of gravel, and the first particles 20 are concave in the polyurethane resin glue. That is, on the polyurethane resin glue, the first particles 20 are concave downward, and the second particles 30 are convex upward, so that the uneven rough surface will appear on the concave-convex rough surface glue film formed by processing, so that the concrete rough surface can be made by the concave-convex rough surface glue film.

[0038] In one implementation, Figure 2 As shown in the figure, the number of the second particles 30 is greater than the number of the first particles 20, and a plurality of the second particles 30 are arranged around one first particle 20. Moreover, the second particles 30 are located in the aggregate-free area of ​​the polyurethane resin glue, so that the concave-convex rough surface formed is a concave shape surrounded by a plurality of second particles 30. Figure 1 It can be seen from the figure that the space between two adjacent concave first particles 20 is filled with second particles 30 .

[0039] After the size of the first particle 20 and the size of the second particle 30 are obtained in this embodiment, a rough surface drawing corresponding to the concave-convex rough surface can be drawn according to the size of the first particle 20 and the size of the second particle 30. After the rough surface drawing is obtained, this embodiment converts the rough surface drawing into a processing drawing of a CNC engraving machine, and then uses the CNC engraving machine to carve a concave-convex rough surface on the polyurethane resin glue according to the processing drawing, thereby obtaining the concave-convex rough surface glue film.

[0040] like Figure 2 As shown, in this embodiment, the rough-surfaced adhesive film prepared by the above-mentioned rough-surfaced adhesive film preparation method uses polyurethane resin glue as a carrier 10, and first particles 20 and second particles 30 are arranged on the polyurethane resin glue; the first particles 20 and the second particles 30 are both in the shape of gravel, and the first particles 20 appear concave on the rough-surfaced adhesive film; the number of the second particles 30 is greater than the number of the first particles 20, and a plurality of second particles 30 are arranged around one first particle 20. The size of the first particle 20 is 3-20mm in diameter and 4-8mm in depth. The size of the second particle 30 is 0.5-3mm in height. As shown in FIG. Figure 2 As shown in , the size of the first particle 20 is larger than that of the second particle 30. The first particle 20 is in the shape of gravel, and the second particle 30 is in the shape of small gravel. Of course, the sizes of the first particle 20 and the second particle 30 can be selected according to needs, and this embodiment does not limit this.

[0041] After the concave-convex rough surface adhesive film is made in this embodiment, the concave-convex rough surface adhesive film can be used to prepare prefabricated components with a concrete rough surface (such as a bay window). In specific applications, after the concave-convex rough surface adhesive film is fixed in the corresponding position in this embodiment, it is only necessary to pour concrete. After the concrete pouring is completed, the concave-convex rough surface is removed, and a concrete rough surface is formed on the prefabricated component. After the pouring is completed, the first particles 20 on the concave-convex rough surface adhesive film appear as convexities on the concrete rough surface; the second particles 30 on the concave-convex rough surface adhesive film appear as concave shapes on the concrete rough surface. In other words, the concave-convex shape on the concrete rough surface formed on the prefabricated component is opposite and corresponding to the concave-convex shape on the concave-convex rough surface adhesive film. Since the concrete rough surface is provided on the prefabricated component, the concrete rough surface is uneven, which can effectively improve the bonding force between new and old concrete. And by testing the concrete rough surface, it is found that the bonding strength of the concrete rough surface is greater than 0.5MPa, and the concrete rough surface has no water-repellent effect. Therefore, when the prefabricated components with the concave-convex rough surface are installed, the installation effect is also better. The concrete rough surface formed by this embodiment is better than the rough surface formed by roughening and other conventional shapes of die-casting, which can meet the needs, and at the same time eliminates the water washing process, saves water, reduces the dust caused by secondary treatment, etc., which meets environmental protection requirements. In addition, this embodiment uses the concave-convex rough surface film to make the concrete rough surface, which can effectively improve the rough treatment efficiency.

[0042] In summary, the present invention discloses a method for preparing a concave-convex rough surface adhesive film, a concave-convex rough surface adhesive film and a prefabricated component, wherein the preparation method comprises: determining the first particle and the second particle of the concave-convex rough surface according to experimental tests, and determining the size of the first particle and the size of the second particle; drawing a rough surface drawing corresponding to the concave-convex rough surface according to the size of the first particle and the size of the second particle; using a CNC engraving machine, processing the concave-convex rough surface on a polyurethane resin adhesive according to the rough surface drawing to obtain the concave-convex rough surface adhesive film. The concave-convex rough surface adhesive film prepared by the present invention comprises the first particle and the second particle, so that a concrete rough surface with stronger bonding force can be made by the concave-convex rough surface adhesive film, and a non-hydrophobic effect can be achieved, meeting the use requirements.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a rough surface adhesive film, characterized in that: The preparation method comprises: Determine the first particles and the second particles of the concavo-convex rough surface according to experimental tests, and determine the size of the first particles and the size of the second particles; Draw a rough surface drawing corresponding to the concave-convex rough surface according to the size of the first particles and the size of the second particles; Using a CNC engraving machine, processing the concave-convex rough surface on the polyurethane resin glue according to the rough surface drawing to obtain the concave-convex rough surface glue film; The first particles and the second particles are both in the shape of gravel, and the first particles appear as concave shapes on the uneven rough surface film; The size of the first particles is 3-20 mm in diameter and 4-8 mm in depth; The second particles are located in the aggregate-free area of ​​the polyurethane resin glue, the diameter of the second particles is smaller than the diameter of the first particles, and the size of the second particles is 0.5-3 mm in height; The number of the second particles is greater than the number of the first particles, and the plurality of second particles are arranged around one first particle, and the space between two adjacent concave first particles is filled with the second particles; The Shore hardness of the polyurethane resin glue is (A) 70-90, the tensile strength of the polyurethane resin rubber is 30MPa-60MPa, and the elongation at break of the polyurethane resin is 445%-600%.

2. A rough-surfaced adhesive film prepared by the method for preparing a rough-surfaced adhesive film according to claim 1, characterized in that: The uneven rough surface adhesive film uses polyurethane resin adhesive as a carrier; first particles and second particles are arranged on the polyurethane resin adhesive; the first particles and the second particles are both in the shape of gravel, and the first particles appear concave on the uneven rough surface adhesive film; the number of the second particles is greater than the number of the first particles, and multiple second particles are arranged around one first particle.

3. A prefabricated component made of the concave-convex rough surface adhesive film according to claim 2, characterized in that: A concrete rough surface is formed on the prefabricated component, and the concrete rough surface is formed by pouring concrete on the concave-convex rough surface rubber film; The first particles on the uneven rough surface adhesive film appear to be convex on the rough concrete surface; The second particles on the uneven rough surface adhesive film appear to be concave on the rough surface of the concrete.

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