A high temperature resistant foam double-sided adhesive

Abstract

The utility model relates to the field of foam double-sided adhesives, and specifically discloses a high-temperature resistant foam double-sided adhesive, comprising a foam substrate, a glue layer coated on the upper and lower surfaces of the foam substrate, a release paper pasted on the surface of the glue layer, a reinforcement layer arranged in the foam substrate, a fire extinguishing agent arranged in the reinforcement layer, and a flame retardant layer coated on the outer periphery of the foam substrate. The flame retardant layer can perform preliminary flame retardancy on the foam substrate at high temperature, and the honeycomb reinforcement layer further improves the deformation resistance of the foam substrate to prevent its deformation at high temperature from causing it to tilt and contact with open flames, and at the same time, the fire extinguishing agent in the reinforcement layer can further ensure the flame retardancy of the foam substrate.

Description

Technical Field

[0001] The utility model relates to the field of foam double-sided adhesive tape, in particular to a high-temperature resistant foam double-sided adhesive tape. Background Art

[0002] Foam double-sided tape refers to a double-sided tape made by coating both sides of a foamed foam substrate with a strong sticky acrylic adhesive and then covering one side with a release paper or release film. Traditional foam double-sided tape has low flame retardancy of the foam substrate. At high temperatures, the adhesiveness of the foam double-sided tape is reduced and it is easy to deform and warp up, which comes into contact with open flames, causing the foam substrate to ignite.

[0003] Therefore, it is necessary to design a high temperature resistant foam double-sided adhesive to alleviate the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a high temperature resistant foam double-sided adhesive to overcome the above-mentioned defects in the prior art.

[0005] According to the utility model, a high-temperature resistant foam double-sided adhesive comprises a foam substrate, the upper and lower surfaces of the foam substrate are coated with a glue layer, the surface of the glue layer is adhered with release paper, a reinforcement layer is arranged in the foam substrate, a fire extinguishing agent is arranged in the reinforcement layer, and a flame retardant layer is coated on the outer periphery of the foam substrate.

[0006] Through the above technical scheme, the flame retardant layer can initially flame retard the foam substrate at high temperature, and the reinforcing layer increases the strength of the foam substrate to prevent it from deforming at high temperature and causing it to curl up and contact with open flames. At the same time, the fire extinguishing agent in the reinforcing layer can further ensure the flame retardancy of the foam substrate.

[0007] The utility model is further configured as follows: the reinforcing layer is a honeycomb made of cross-linked polyethylene foam, the cavity of the honeycomb reinforcing layer is divided into a storage cavity and a filling cavity, the storage cavity and the filling cavity are evenly spaced, and the fire extinguishing agent is distributed in the storage cavity in the reinforcing layer.

[0008] Through the above technical solution, the reinforcement layer made of cross-linked polyethylene foam has good strength and elasticity, and the honeycomb reinforcement layer further improves the deformation resistance of the foam substrate.

[0009] The utility model is further configured as follows: sealing films are fixed at both upper and lower ends of the storage cavity, and the fire extinguishing agent is filled in the storage cavity.

[0010] Through the above technical solution, the fire extinguishing agent in the reinforcement layer can further increase the flame retardancy of the reinforcement layer, thereby preventing the foam substrate from burning after contacting an open flame.

[0011] The utility model is further configured as follows: the sealing film is made of a polyurethane film.

[0012] Through the above technical solution, the sealing film made of polyurethane film can be quickly melted and decomposed at high temperature, so that the fire extinguishing agent in the reinforcement layer can be quickly exposed, ensuring that it can take effect in time when the foam substrate burns.

[0013] The utility model is further configured as follows: the foam substrate is coated on the outer surface of the reinforcement layer and fills the storage cavity of the reinforcement layer.

[0014] The above technical solution ensures the connection strength between the foam substrate and the reinforcement layer.

[0015] The utility model is further configured as follows: the foam substrate is made of polyimide foam.

[0016] Through the above technical solution, the foam substrate made of polyimide has excellent high temperature resistance, thereby increasing the flame retardancy of the foam substrate.

[0017] The utility model is further configured as follows: the flame retardant layer is a water-based polyurethane flame retardant coating.

[0018] Through the above technical solution, the flame retardant layer made of the waterborne polyurethane flame retardant coating makes the foam substrate flame retardant while ensuring that it has sufficient elasticity.

[0019] The beneficial effects of the utility model are as follows: the flame retardant layer can initially flame retard the foam substrate at high temperature, the honeycomb reinforcing layer further improves the deformation resistance of the foam substrate, avoiding its deformation at high temperature and causing it to curl up and contact with open flames, and at the same time, the fire extinguishing agent in the reinforcing layer can further ensure the flame retardancy of the foam substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This utility model Figure 1 Schematic diagram of AA in the middle;

[0022] Figure 3 This utility model Figure 1 Schematic diagram of BB

[0023] Figure 4 It is a schematic diagram of the connection between the reinforcing layer and the sealing film in the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the storage cavity and the filling cavity in the utility model;

[0025] Figure 6 It is a structural schematic diagram of the reinforcement layer in the utility model;

[0026] Figure 7 It is a schematic diagram of the connection between the reinforcing layer and the foam substrate in the utility model;

[0027] Figure 8 It is a structural schematic diagram of the foam substrate in the utility model.

[0028] In the figure:

[0029] 10. Foam substrate; 11. Release paper; 12. Glue layer; 20. Reinforcement layer; 201. Storage cavity; 202. Filling cavity; 21. Sealing film; 30. Flame retardant layer. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of simplifying the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model. As used in this article, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of this high temperature resistant foam double-sided adhesive are described in detail below:

[0032] An embodiment of the utility model:

[0033] Reference Figure 1-Figure 8The utility model provides a high temperature resistant foam double-sided adhesive, including a foam substrate 10, the upper and lower surfaces of the foam substrate 10 are coated with a glue layer 12, the surface of the glue layer 12 is pasted with a release paper 11, a reinforcing layer 20 is arranged in the foam substrate 10, a fire extinguishing agent is arranged in the reinforcing layer 20, a flame retardant layer 30 is coated on the outer periphery of the foam substrate 10, the reinforcing layer 20 is a honeycomb made of cross-linked polyethylene foam, and the cavity of the honeycomb reinforcing layer 20 is divided into a storage cavity 201 and a filling cavity 202. In this embodiment, six filling cavities 202 are distributed on the outside of each storage cavity 201, the fire extinguishing agent is distributed in the storage cavity 201 in the reinforcing layer 20, and sealing films 21 are fixed at both upper and lower ends of the storage cavity 201, the fire extinguishing agent is filled in the storage cavity 201, and the sealing film 21 is cut into the reinforcing layer 2 0 hexagonal cavity, the sealing film 21 is first pasted on one end of the hexagonal cavity of the reinforcing layer 20, the powdered fire extinguishing agent is filled into the storage cavity 201, and then the sealing film 21 on the other side is pasted on the other end of the storage cavity 201, so as to seal the powdered fire extinguishing agent in the storage cavity 201, and then the reinforcing layer 20 is placed in the foam forming mold, the sealing film 21 is made of polyurethane film, the foam substrate 10 is coated on the outer surface of the reinforcing layer 20 and fills the filling cavity 202 of the reinforcing layer 20, the foam substrate 10 is made of polyimide foam, the polyimide raw material is poured into the mold for foaming to form the foam substrate 10, the flame retardant layer 30 is a water-based polyurethane flame retardant coating, and then a layer of water-based polyurethane flame retardant coating is applied on the four upper and lower front and rear surfaces of the foam substrate 10 to form the flame retardant layer 30.

[0034] It is clear to those skilled in the art that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A high temperature resistant foam double-sided adhesive, comprising a foam substrate (10), wherein the upper and lower surfaces of the foam substrate (10) are coated with a glue layer (12), and a release paper (11) is pasted on the surface of the glue layer (12), characterized in that: A reinforcement layer (20) is arranged inside the foam substrate (10), a fire extinguishing agent is arranged inside the reinforcement layer (20), and a flame retardant layer (30) is coated on the outer periphery of the foam substrate (10).

2. The high temperature resistant foam double-sided adhesive according to claim 1, characterized in that: The reinforcing layer (20) is in a honeycomb shape made of cross-linked polyethylene foam, the cavity of the honeycomb reinforcing layer (20) is divided into a storage cavity (201) and a filling cavity (202), the storage cavity (201) and the filling cavity (202) are evenly spaced and distributed, and the fire extinguishing agent is distributed in the storage cavity (201) in the reinforcing layer (20).

3. The high temperature resistant foam double-sided adhesive according to claim 2, characterized in that: Sealing films (21) are fixed at both upper and lower ends of the storage cavity (201), and the fire extinguishing agent is filled in the storage cavity (201).

4. The high temperature resistant foam double-sided adhesive according to claim 3, characterized in that: The sealing film (21) is made of a polyurethane film.

5. The high temperature resistant foam double-sided adhesive according to claim 3, characterized in that: The foam substrate (10) is coated on the outer surface of the reinforcement layer (20) and fills the filling cavity (202) of the reinforcement layer (20).

6. The high temperature resistant foam double-sided adhesive according to claim 4, characterized in that: The foam substrate (10) is made of polyimide foam.

7. The high temperature resistant foam double-sided adhesive according to claim 1, characterized in that: The flame retardant layer (30) is a water-based polyurethane flame retardant coating.

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