High-temperature-resistant flame-retardant polyester film

Abstract

The utility model relates to the field of polyester films, and discloses a high-temperature-resistant flame-retardant polyester film, which comprises a reference layer, an acrylic plate layer and an auxiliary layer, the acrylic plate layer is fixedly connected onto the reference layer, and the auxiliary layer is fixedly connected onto the acrylic plate layer. In addition, the antistatic layer has certain dustproof performance and can restrain attachment of dust and other small particles and keep the surface clean, the anti-tear layer can effectively play a buffering role and enhance the toughness and tear resistance of the material, and the flame-retardant layer can effectively achieve a heat insulation function. The high-temperature-resistant polyester film has the advantages that heat conduction in a high-temperature environment is prevented, the combined design of the acrylic plate layers and the fixing rods has a remarkable reinforcing effect, the stability and durability of the polyester film can be effectively improved, and the two reinforcing elements play a unique role to ensure that the film is not prone to deformation in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of polyester film, concretely is a kind of high-temperature-resistant flame-retardant polyester film. BACKGROUND

[0002] Polyester film is an important polymer material, is widely used in packaging, electronics, optics, medical fields, polyester is a kind of polymer generated by esterification reaction of fatty acid and alcohol, commonly used such as polyethylene terephthalate (PET), polyester film has excellent mechanical properties, chemical stability and heat resistance, and high transparency is its important characteristic, polyester film is usually prepared by solution casting, melt extrusion, biaxial stretching process.Polyester film is widely used in food packaging due to its excellent moisture-proof and oxidation-resistant properties, as an insulating material in electrical insulation and circuit board, polyester film has good electrical properties, some polyester films are used to manufacture optical elements and mirrors in the optical field, with the attention of sustainable development, polyester film recycling and reuse technology gradually receives attention, PET film can be recycled and reprocessed by chemical or mechanical recycling, with the development of polymer science, the research of new polyester film mainly concentrates on improving material performance, functionalization and the diversity of its application, the research and application of polyester film continuously promote the development of multiple industries, but also face the challenges of environmental protection and sustainability, however, the current polyester film has significant shortcomings in fire prevention, it cannot effectively prevent fire caused by high temperature, in high-temperature environment, polyester film is not only prone to deformation, and even in extreme cases may burn, due to its poor flame retardant performance, this makes the packaging material using polyester film more fragile when facing heat source, it should be noted that polyester film is widely used in cargo packaging, especially in the transportation and storage process, some of the packaged products are flammable, in this case, polyester film lacking flame retardant performance will increase the risk of fire, once an accident occurs, the consequences will not only include the loss of goods, and may even affect the surrounding environment, cause greater economic loss, this situation may also pose a serious threat to personal safety, especially in places with high population density or important industrial links, therefore, we propose a high-temperature-resistant flame-retardant polyester film. SUMMARY

[0003] (I) Technical problem solved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-temperature-resistant flame-retardant polyester film, which solves the above problems.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of high-temperature-resistant flame-retardant polyester film, including reference layer, acrylic sheet layer, auxiliary layer, the reference layer is fixedly connected with acrylic sheet layer, acrylic sheet layer is fixedly connected with auxiliary layer.

[0007] Preferably, the reference layer includes polyester film base layer, inner flame-retardant layer, adhesive layer, insulating layer and tear-resistant layer, the polyester film base layer is fixedly connected with the inner flame-retardant layer, the inner flame-retardant layer is closely attached with the adhesive layer, a plurality of equidistant trapezoidal protrusions are arranged on the upper surface of the adhesive layer, a plurality of equidistant trapezoidal grooves are arranged on the lower surface of the insulating layer, the protrusion structure of the adhesive layer matches the groove structure of the insulating layer, a plurality of equidistant trapezoidal protrusions are vertically arranged on the upper surface of the insulating layer corresponding to the protrusions of the adhesive layer, a plurality of equidistant trapezoidal grooves are arranged on the lower surface of the tear-resistant layer, the protrusion structure of the insulating layer matches the groove structure of the tear-resistant layer, and four cylindrical protrusions are symmetrically arranged on the upper surface of the tear-resistant layer near the corners.

[0008] Preferably, the auxiliary layer includes an antistatic layer, a polyester film surface layer and an outer flame-retardant layer, the upper surface of the antistatic layer is fixedly provided with the polyester film surface layer, and a plurality of equidistant positioning grooves are arranged on the side surface of the antistatic layer, the upper surface of the polyester film surface layer is fixedly provided with the outer flame-retardant layer.

[0009] Preferably, four cylindrical grooves are symmetrically arranged on the lower surface of the acrylic sheet layer near the corners, the cylindrical protrusion structure of the tear-resistant layer corresponds to the cylindrical groove structure of the acrylic sheet layer, and the two are fixedly connected, and the side surface of the tear-resistant layer corresponding to the antistatic layer is provided with positioning grooves of the same distance and number.

[0010] Preferably, each fixed rod is embedded in the aligned positioning groove.

[0011] (Three) beneficial effects

[0012] Compared with the prior art, the utility model provides a high-temperature-resistant flame-retardant polyester film, which has the following beneficial effects:

[0013] 1. The high-temperature-resistant flame-retardant polyester film can effectively prevent the generation of surface static electricity, thereby significantly reducing the risk of fire, in addition, the antistatic layer also has certain dustproof performance, can inhibit the adhesion of dust and other small particles, and keep the surface clean, thereby improving the service life and performance of the product.

[0014] 2、The high-temperature-resistant and flame-retardant polyester film has a tear-resistant layer, which can effectively play a buffering role, enhance the toughness and tear-resistant capacity of the material, prevent the material from tearing and being damaged when subjected to external force impact, prolong the service life, realize the heat insulation function in combination with the design of the flame-retardant layer, resist the direct contact of the flame through the special material structure of the flame-retardant layer, reduce the heat transfer to the adhesive layer when the temperature rises, protect the adhesive layer from thermal expansion, prevent the performance degradation of the material caused by overheating, and ensure the reliability and safety under extreme conditions.

[0015] 3、The high-temperature-resistant and flame-retardant polyester film has a tear-resistant layer, which can effectively play a buffering role, enhance the toughness and tear-resistant capacity of the material, prevent the material from tearing and being damaged when subjected to external force impact, prolong the service life, realize the heat insulation function in combination with the design of the flame-retardant layer, resist the direct contact of the flame through the special material structure of the flame-retardant layer, reduce the heat transfer to the adhesive layer when the temperature rises, protect the adhesive layer from thermal expansion, prevent the performance degradation of the material caused by overheating, and ensure the reliability and safety under extreme conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a sectional view schematic view of the utility model.

[0018] In the drawing: 1, polyester film base layer; 2, inner flame-retardant layer; 3, adhesive layer; 4, insulating layer; 5, tear-resistant layer; 6, acrylic plate layer; 7, antistatic layer; 8, polyester film surface layer; 9, outer flame-retardant layer; 10, fixed rod; 11, positioning groove; 12, cylindrical protrusion; 13, cylindrical groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figs. 1-2 A high-temperature-resistant and flame-retardant polyester film, comprising a reference layer, an acrylic plate layer 6 and an auxiliary layer, the reference layer is fixedly connected with the acrylic plate layer 6, and the acrylic plate layer 6 is fixedly connected with the auxiliary layer.

[0021] Further, the benchmark layer includes a polyester film base layer 1, an inner flame-retardant layer 2, an adhesive layer 3, an insulating layer 4, a tear-resistant layer 5, the inner flame-retardant layer 2 is fixedly connected to the polyester film base layer 1, and the adhesive layer 3 is closely attached to the inner flame-retardant layer 2. The flame-retardant layer can resist direct contact with fire and reduce heat transfer to the adhesive layer when the temperature rises. This feature not only protects the adhesive layer from thermal expansion, but also prevents material performance degradation caused by overheating. A plurality of equidistant trapezoidal protrusions are provided on the upper surface of the adhesive layer 3, a plurality of equidistant trapezoidal grooves are provided on the lower surface of the insulating layer 4, the protrusion structure of the adhesive layer 3 matches the groove structure of the insulating layer 4, and a plurality of equidistant trapezoidal protrusions are vertically provided on the upper surface of the insulating layer 4 corresponding to the protrusions of the adhesive layer 3. A plurality of equidistant trapezoidal grooves are provided on the lower surface of the tear-resistant layer 5. By providing the tear-resistant layer, the buffer effect can be effectively achieved, and the toughness and tear resistance of the material can be enhanced. The protrusion structure of the insulating layer 4 matches the groove structure of the tear-resistant layer 5, and four cylindrical protrusions 12 are symmetrically and fixedly provided on the upper surface of the tear-resistant layer 5 near the corners.

[0022] Further, the auxiliary layer includes an antistatic layer 7, a polyester film surface layer 8, and an outer flame-retardant layer 9. The upper surface of the antistatic layer 7 is fixedly provided with the polyester film surface layer 8. The antistatic layer can effectively prevent the generation of surface static electricity, thereby significantly reducing the risk of fire. The antistatic layer also has certain dustproof performance, which can inhibit the adhesion of dust and other small particles, maintain the cleanliness of the surface, and thereby improve the service life and performance of the product. The side surface of the antistatic layer 7 is also provided with a plurality of equidistantly distributed positioning grooves 11, and the outer flame-retardant layer 9 is fixedly attached to the upper surface of the polyester film surface layer 8.

[0023] Further, four cylindrical grooves 13 are symmetrically provided on the lower surface of the acrylic plate layer 6 near the corners, the cylindrical protrusion structure 12 of the tear-resistant layer 5 corresponds to the cylindrical groove structure 13 of the acrylic plate layer 6, and they are fixedly connected. The tear-resistant layer 5 is provided with positioning grooves 11 of the same distance and number corresponding to the side surface of the antistatic layer 7. The acrylic plate has a significant reinforcing effect, which can effectively improve the stability and durability of the polyester film.

[0024] Further, each fixed rod 10 is embedded in the aligned positioning groove 11.

[0025] Working principle: the bottom layer is polyester film base layer 1, the surface is coated with fire-retardant paint, and the inner fire-retardant layer 2 is formed after curing, the inner fire-retardant layer 2 can effectively resist the direct contact of flame with its unique material structure, and when the temperature rises, the conduction of heat to the sticky layer 3 is slowed down, the sticky glue is coated on the inner fire-retardant layer 2 to form the sticky layer 3, the sticky layer 3 is tightly bonded with the insulating layer 4, the top of the insulating layer 4 is fixed with the tear-resistant layer 5, effectively providing a buffering effect, enhancing the toughness and tear resistance of the material, the tear-resistant layer 5 is firmly connected with the acrylic plate layer 6, significantly improving the stability and durability of the polyester film, through the clamping of the fixing rod 10 and the positioning groove 11 and the connection of the glue, the acrylic plate layer 6 is connected with the antistatic layer 7, effectively preventing the generation of static electricity, thereby greatly reducing the fire risk, in addition, the design can also inhibit the adhesion of dust and other small particles, keep the surface clean, the polyester film surface layer 8 covers the antistatic layer 7, and the fire-retardant paint is coated on the polyester film surface layer 9 to form a protective layer after curing.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant flame retardant polyester film comprising a base layer, an acrylic plate layer (6), and an auxiliary layer, characterized in that: An acrylic plate layer (6) is fixedly connected to the reference layer, and an auxiliary layer is fixedly connected to the acrylic plate layer (6).

2. The high temperature resistant flame retardant polyester film according to claim 1, characterized in that: The reference layer comprises a polyester film base layer (1), an inner flame retardant layer (2), an adhesive layer (3), an insulating layer (4), and an anti-tear layer (5); the inner flame retardant layer (2) is fixedly connected to the polyester film base layer (1); the adhesive layer (3) is tightly attached to the inner flame retardant layer (2); a plurality of groups of equally spaced trapezoidal protrusions are provided on the upper surface of the adhesive layer (3); a plurality of groups of equally spaced trapezoidal grooves are provided on the lower surface of the insulating layer (4); the protrusion structure of the adhesive layer (3) matches the groove structure of the insulating layer (4); and a plurality of groups of equally spaced trapezoidal protrusions are vertically provided on the upper surface of the insulating layer (4) corresponding to the protrusions of the adhesive layer (3); a plurality of groups of equally spaced trapezoidal grooves are provided on the lower surface of the anti-tear layer (5); the protrusion structure of the insulating layer (4) matches the groove structure of the anti-tear layer (5); and four groups of cylindrical protrusions (12) of the insulating layer are symmetrically fixed near the corners of the upper surface of the anti-tear layer (5).

3. The high temperature resistant flame retardant polyester film according to claim 1, characterized in that: The auxiliary layer comprises an antistatic layer (7), a polyester film surface layer (8), and an outer flame retardant layer (9); the polyester film surface layer (8) is fixedly provided on the upper surface of the antistatic layer (7), and a plurality of groups of equally spaced rectangular grooves are further provided on the side surface of the antistatic layer (7); and the outer flame retardant layer (9) is adhesively fixed to the upper surface of the polyester film surface layer (8).

4. The high temperature resistant flame retardant polyester film according to claim 2, characterized in that: Four groups of cylindrical grooves (13) are symmetrically provided near the corners of the lower surface of the acrylic plate layer (6); the cylindrical protrusion (12) structure of the anti-tear layer (5) corresponds to the cylindrical groove (13) structure of the acrylic plate layer (6) for fixed connection; and positioning grooves (11) of equal distance and number are provided on the side of the anti-tear layer (5) corresponding to the antistatic layer (7).

5. The high temperature resistant flame retardant polyester film according to claim 4, characterized in that: Each fixing rod (10) is embedded in the aligned positioning slot (11).

Images