Polyester film with high heat resistance and high thermal stability

Abstract

The utility model discloses a polyester film with high heat resistance and high thermal stability, which belongs to the technical field of polyester films, and is characterized in that the polyester film comprises a polyester film main body, the polyester film main body comprises a main body film layer, and reinforcing layers are arranged at the top and the bottom of the main body film layer. The high-temperature-resistant and high-thermal-stability adhesive is arranged between the composite main body thin film layers, so that firm combination between the composite main body thin film layers under a high-temperature condition can be ensured, and the conditions of softening, melting or adhesive force reduction and the like caused by heating are avoided; the basic heat resistance of the polyester film main body is improved to a certain extent through the main body film layer formed by compounding, and the separation layer is matched, so that conduction of heat through the film can be greatly reduced through the separation layer, a heat insulation effect is achieved, the internal main body film layer and other structures are protected from being influenced by high temperature, and the service life of the film is prolonged. The heat resistance of the polyester film main body is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyester films, in particular to a high-heat-stable polyester film with strong heat resistance. Background Art

[0002] Polyester film is a common polymer film with many excellent properties and is widely used in many fields. Polyester film is usually a film-like material made from polyester resin as the main raw material through a specific processing technology.

[0003] In certain circumstances, higher temperatures may occur, and ordinary heat-shrinkable polyester films may be damaged.

[0004] An existing patent (publication number: CN214449216U) discloses a highly heat-stable polyester film with strong heat resistance. This utility model uses an adhesive layer to connect the first base film and the second base film to increase the heat resistance of the roll film itself. In combination with the release film on both sides of the base film, the multi-layer heat insulation on both sides makes its heat resistance and stability better, thereby further improving the heat insulation capacity of the film body.

[0005] Existing patents have provided solutions to the above problems, but when polyester film is exposed to high temperature for a long time, its performance will be significantly reduced, resulting in a decrease in the mechanical strength of the polyester film, which is prone to tearing, breakage and other problems, thereby affecting the normal use of the polyester film and the performance and life of the product.

[0006] Therefore, a high heat-stable polyester film with strong heat resistance is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a high-heat-stable polyester film with strong heat resistance, which can solve the problem that the performance of the existing polyester film will be significantly reduced when it is exposed to a high-temperature environment for a long time, resulting in a decrease in the mechanical strength of the polyester film, which is prone to tearing, breakage and other problems, thereby affecting the normal use of the polyester film and the performance and life of the product.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a highly heat-stable polyester film with strong heat resistance, comprising a polyester film body, wherein the polyester film body comprises a main film layer, a reinforcing layer is provided on the top and bottom of the main film layer, and a barrier layer is provided on the side of the reinforcing layer away from the main film layer, and an antistatic layer is provided on the side of the barrier layer away from the reinforcing layer;

[0009] The main film layer includes a first base film and a second base film. An adhesive layer is provided on a side of the first base film opposite to the second base film, and the second base film is provided on top of the adhesive layer.

[0010] Preferably, the first base film and the second base film are both made of polyester materials, and the adhesive layer is made of silicone adhesive.

[0011] Preferably, the barrier layer includes an insulating layer and a reflective layer, the insulating layer is connected to the first base film and the second base film on one side thereof, and the reflective layer is provided on the side thereof close to the insulating layer.

[0012] Preferably, the insulating layer is made of aerogel material and is evenly coated on a side close to the first base film and the second base film.

[0013] Preferably, the reflective layer is made of a solar film material and is arranged on a side close to the insulating layer.

[0014] Preferably, the reinforcement layer is made of a polyimide film material and is arranged on a side close to the reflective layer.

[0015] Preferably, the antistatic layer is made of an antistatic PET protective film material and is arranged on a side close to the reinforcement layer.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present application provides a main film layer that is composited and provided with a high-temperature resistant and thermally stable adhesive between them, which can ensure a firm bond between the composite main film layers under high temperature conditions and will not soften, melt, or experience a decrease in adhesive strength due to heat. The composite main film layer improves the basic heat resistance of the polyester film body itself to a certain extent, and in combination with the barrier layer, the barrier layer can greatly reduce the conduction of heat through the film, play a role in heat insulation, and protect the internal main film layer and other structures from the influence of high temperature, thereby further improving the heat resistance of the polyester film body.

[0018] 2. This application sets up a reinforcing layer and an antistatic layer. Under the action of the reinforcing layer, the main film layer can maintain good mechanical properties, such as tensile strength, tear strength, etc. At the same time, it can effectively prevent the erosion of the external environment on the polyester film, thereby increasing the service life of the polyester film and ensuring the stability of the performance of the polyester film body in a high temperature environment. Under the action of the antistatic layer, it can effectively prevent the generation of static electricity, improve the safety and stability of the polyester film body, and ensure that its performance in different environments is not affected by static electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of the high heat-stable polyester film with strong heat resistance of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the polyester film main body of the utility model;

[0021] Figure 3 For this utility model Figure 2 A magnified schematic diagram of point A in the middle;

[0022] Figure 4 This is an exploded schematic diagram of the main film layer of the utility model;

[0023] Figure 5 This is an exploded schematic diagram of the partition layer of the utility model.

[0024] In the figure, 1, polyester film body; 2, main film layer; 21, first base film; 22, second base film; 23, adhesive layer; 3, reinforcement layer; 4, partition layer; 41, isolation layer; 42, reflective layer; 5, antistatic layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 , this utility model provides a technical solution:

[0027] A highly heat-stable polyester film with strong heat resistance, comprising a polyester film body 1, wherein the polyester film body 1 comprises a main film layer 2, a reinforcing layer 3 is provided on the top and bottom of the main film layer 2, and a barrier layer 4 is provided on the side of the reinforcing layer 3 away from the main film layer 2, and an antistatic layer 5 is provided on the side of the barrier layer 4 away from the reinforcing layer 3;

[0028] The main film layer 2 includes a first base film 21 and a second base film 22 . An adhesive layer 23 is provided on one side of the first base film 21 opposite to the second base film 22 , and the second base film 22 is provided on top of the adhesive layer 23 .

[0029] In this embodiment: by setting the first base film 21 and the second base film 22, and setting a high-temperature resistant and thermally stable adhesive between the two, it can ensure that the first base film 21 and the second base film 22 are firmly bonded under high temperature conditions, and will not soften, melt or reduce the adhesive force due to heat. The main film layer 2 composed of the two makes the basic heat resistance of the polyester film main body 1 itself improved to a certain extent.

[0030] Specifically, such as Figure 4 As shown, the first base film 21 and the second base film 22 are both made of polyester materials, and the adhesive layer 23 is made of organic silicon adhesive.

[0031] In this embodiment: the first base film 21 and the second base film 22 are connected by an adhesive layer 23 composed of an organic silicone adhesive, so that the basic heat resistance of the polyester film body 1 itself is improved to a certain extent, and because the organic silicone adhesive has the advantages of high temperature resistance and strong thermal stability, the first base film 21 and the second base film 22 are firmly bonded together and will not soften, melt or reduce the bonding strength due to heat.

[0032] Specifically, such as Figure 3 As shown, the isolation layer 4 includes an insulating layer 41 and a reflective layer 42 . The insulating layer 41 is connected to the first base film 21 and the second base film 22 on one side thereof, and the reflective layer 42 is provided on the side thereof close to the insulating layer 41 .

[0033] Specifically, such as Figure 5 As shown, the insulating layer 41 is made of aerogel material and is evenly coated on one side close to the first base film 21 and the second base film 22 .

[0034] Specifically, such as Figure 5 As shown, the reflective layer 42 is made of a solar film material and is disposed on a side close to the insulating layer 41 .

[0035] In this embodiment: by providing an insulating layer 41 composed of aerogel, the transfer of heat can be effectively blocked. In a high-temperature environment, the conduction of heat through the film can be greatly reduced, playing a role of heat insulation, thereby making the polyester film body 1 stable in a high-temperature environment, and the reflective layer 42 composed of solar film material can reflect a large amount of heat radiation back, further improving the heat resistance of the polyester film body 1, and the synergistic effect with the insulating layer 41 greatly enhances the polyester film body 1's ability to resist high temperatures.

[0036] Specifically, such as Figure 3 As shown, the reinforcement layer 3 is made of a polyimide film material and is disposed on a side close to the reflective layer 42 .

[0037] Specifically, such as Figure 3 As shown, the antistatic layer 5 is made of an antistatic PET protective film material and is arranged on a side close to the reinforcing layer 3 .

[0038] In this embodiment: by providing a reinforcing layer 3 composed of polyimide film material, the polyester film main body 1 can maintain good mechanical properties, such as tensile strength, tear strength, etc. At the same time, it can also effectively prevent the erosion of the external environment on the polyester film, thereby increasing the service life of the polyester film. The antistatic layer 5 composed of antistatic PET protective film material can effectively prevent the generation of static electricity, improve the safety and stability of the polyester film main body 1, and ensure that its performance in different environments is not affected by static electricity.

[0039] Working Principle: The first base film 21 and the second base film 22 are connected by the adhesive layer 23, so that the basic heat resistance of the polyester film body 1 itself is improved to a certain extent. Since the silicone adhesive has the advantages of high temperature resistance and strong thermal stability, the first base film 21 and the second base film 22 are firmly bonded and will not soften, melt or lose adhesion due to heat. The synergistic effect of the insulating layer 41 and the reflective layer 42 can greatly reduce the conduction of heat through the film, playing a heat insulating role, thereby ensuring the stability of the polyester film body 1 in a high-temperature environment and reflecting a large amount of heat radiation back, further improving the heat resistance of the polyester film body 1 and greatly enhancing the polyester film body 1's ability to resist high temperatures. The reinforcing layer 3 and the antistatic layer 5 can enable the polyester film body 1 to maintain good mechanical properties, such as tensile strength and tear strength, and can also effectively prevent the external environment from eroding the polyester film, thereby increasing the service life of the polyester film. At the same time, it can effectively prevent the generation of static electricity, improve the safety and stability of the polyester film body 1, and ensure that its performance in different environments is not affected by static electricity.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A highly heat-stable polyester film with strong heat resistance, comprising a polyester film body (1), characterized in that: The polyester film body (1) comprises a main film layer (2), a reinforcement layer (3) is provided on the top and bottom of the main film layer (2), a barrier layer (4) is provided on the side of the reinforcement layer (3) away from the main film layer (2), and an antistatic layer (5) is provided on the side of the barrier layer (4) away from the reinforcement layer (3); The main film layer (2) comprises a first base film (21) and a second base film (22), wherein an adhesive layer (23) is provided on the side of the first base film (21) opposite to the second base film (22), and the second base film (22) is provided on top of the adhesive layer (23).

2. The high heat-stable polyester film with strong heat resistance according to claim 1, characterized in that: The first base film (21) and the second base film (22) are both made of polyester material, and the adhesive layer (23) is made of organic silicon adhesive.

3. The high heat-stable polyester film with strong heat resistance according to claim 1, characterized in that: The isolation layer (4) comprises an insulating layer (41) and a reflective layer (42); the insulating layer (41) is connected to the first base film (21) and the second base film (22) on one side thereof, and the reflective layer (42) is arranged on the side thereof close to the insulating layer (41).

4. The high heat-stable polyester film with strong heat resistance according to claim 3, characterized in that: The insulating layer (41) is made of aerogel material and is evenly coated on one side close to the first base film (21) and the second base film (22).

5. The high heat-stable polyester film with strong heat resistance according to claim 3, characterized in that: The reflective layer (42) is made of a solar film material and is arranged on a side close to the insulating layer (41).

6. The high heat-stable polyester film with strong heat resistance according to claim 3, characterized in that: The reinforcing layer (3) is made of a polyimide film material and is arranged on a side close to the reflecting layer (42).

7. The high heat-stable polyester film with strong heat resistance according to claim 1, characterized in that: The antistatic layer (5) is made of an antistatic PET protective film material and is arranged on a side close to the reinforcing layer (3).

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