Hole isolating membrane demolding cloth structure in blade vacuum infusion molding process

Abstract

The utility model discloses a hole isolating membrane demoulding cloth structure in a blade vacuum infusion forming process, and aims to provide the hole isolating membrane demoulding cloth structure in the blade vacuum infusion forming process, wherein the service life of the hole isolating membrane demoulding cloth structure in the blade vacuum infusion forming process is prolonged by enhancing the pulling resistance and the high temperature resistance. The high-temperature-resistant fabric comprises a base cloth layer, a tensile layer is arranged on the outer side of the base cloth layer, one side of the tensile layer is connected with the base cloth layer, an easy-to-tear layer is mounted on the other side of the tensile layer, a reinforcing layer is mounted on the inner side of the base cloth layer, a high-temperature-resistant layer is mounted on the reinforcing layer, and a grid layer is mounted on the high-temperature-resistant layer. The utility model has the beneficial effects that the service life is prolonged by enhancing the anti-pulling capability and the high-temperature resistance, the anti-pulling capability of the demoulding cloth is improved, the demoulding cloth is convenient to separate, the demoulding cloth is prevented from being penetrated, the high-temperature resistance of demoulding is improved, the demoulding cloth is convenient to separate, and adhesion can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field related to demoulding cloths, in particular to a demoulding cloth structure with a pore isolation membrane in a blade vacuum infusion molding process. Background Art

[0002] Release cloth is a process aid during the molding and curing process of composite components. It's also placed between the mold and the rough part to prevent grease from sticking to the mold. It's often used between the product and the mold to isolate them, and is popular for its excellent overall performance. While a wide variety of release cloths are available on the market today, they generally meet most people's needs. However, they still have some drawbacks. During use, the high temperatures during demoulding can easily damage the cloth, shortening its service life. Furthermore, its poor stretchability limits its use.

[0003] China Patent Authorization Publication No. CN215969669U, with an authorization publication date of March 8, 2022, discloses a nylon release cloth comprising a release cloth base, an upper layer, a lower layer, through holes, and indicator strips, wherein: the upper layer is disposed on the upper surface of the release cloth base; the lower layer is disposed on the lower surface of the release cloth base; multiple through holes are provided, and the through holes are symmetrically positioned through the upper and lower surfaces of the release cloth base; multiple indicator strips are provided, and the indicator strips are symmetrically positioned on the surfaces of the upper and lower layers. A disadvantage of this utility model is that the release cloth has insufficient resistance to pulling during demolding, which can easily reduce its service life. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the release cloth in the prior art in terms of poor tensile strength and high temperature resistance, and provides a pore isolation membrane release cloth structure in a blade vacuum infusion molding process that increases service life by enhancing tensile strength and high temperature resistance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A porous isolation membrane demoulding cloth structure for a blade vacuum infusion molding process comprises a base cloth layer, a tensile layer is provided on the outer side of the base cloth layer, one side of the tensile layer is connected to the base cloth layer, an easy-tear layer is installed on the other side of the tensile layer, a reinforcement layer is installed on the inner side of the base cloth layer, a high-temperature resistant layer is installed on the reinforcement layer, and a mesh layer is installed on the high-temperature resistant layer.

[0007] The base fabric layer constitutes the main structure of the stripping cloth. A tensile layer is installed on the side of the base fabric layer that contacts the mold, which can enhance the tensile strength of the stripping cloth during demoulding. An easy-tear layer is installed on the tensile layer. The easy-tear layer contacts the mold to ensure that the stripping cloth is easy to collect and easy to separate from the mold. A reinforcement layer is installed on the other side of the base fabric layer to enhance the overall strength of the stripping cloth, ensure that the stripping cloth is not easily damaged, and prevent sharp parts from penetrating the stripping cloth. A high-temperature resistant layer is then installed on the reinforcement layer to improve the high-temperature resistance of the stripping cloth and prevent the stripping cloth from being damaged by high temperature. A mesh layer is then installed on the high-temperature resistant layer. The presence of the mesh layer can reduce the contact area between the cast workpiece and the demoulding, and can better separate them, thereby achieving the purpose of increasing the service life by enhancing the tensile strength and high-temperature resistance.

[0008] Preferably, the base fabric layer is made of glass cloth, the anti-tensile layer is installed on one side of the base fabric layer, and the anti-tensile layer is made of polyethylene fiber. The anti-tensile layer adhesive is connected to one side of the base fabric layer. The base fabric layer composed of glass cloth can ensure the strength of the base fabric layer and the main strength of the release cloth. Glass cloth is an inorganic non-metallic material with excellent performance and has many advantages, such as good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. The anti-tensile layer installed on the outside of the base fabric layer is mainly used to improve the tensile strength of the release cloth, ensuring that it is not easily damaged during repeated demolding. In order to ensure the tensile strength of the release cloth, a tensile layer made of polyethylene fiber is used. By improving the tensile strength, the service life of the release cloth is increased. Such a design can improve the tensile strength of the release cloth.

[0009] Preferably, the easy-tear layer is made of polyurethane and is attached to the tensile layer via an adhesive. The easy-tear layer attached to the tensile layer ensures that the release cloth can be separated from the mold, preventing it from adhering to the mold during the high-temperature, high-pressure infusion molding process, which would make it difficult to replace the cloth. The easy-tear layer is made of polyurethane, a polymer formed by the reaction of isocyanate and polyol (polyether or polyester). This material offers excellent wear resistance while preventing adhesion to the mold, reducing abrasion. This design facilitates separation of the release cloth.

[0010] Preferably, the reinforcing layer is mounted on the other side of the base fabric layer and is made of carbon fiber. The reinforcing layer is bonded to the base fabric via an adhesive. The reinforcing layer is mounted on the other side of the base fabric layer to enhance the strength of the release material and prevent penetration by sharp points. Therefore, the reinforcing layer is made of carbon fiber, a material that is not easily penetrated. This reinforces the release fabric while also improving its tensile strength, thus preventing penetration.

[0011] Preferably, the high-temperature resistant layer is made of polyimide film and is bonded to the reinforcement layer via an adhesive. Because the release cloth operates in a high-temperature environment, which can easily damage the cloth and shorten its service life, the high-temperature resistant layer is attached to the reinforcement layer via an adhesive. The high-temperature resistant layer is made of polyimide film, which is known for its excellent heat resistance, chemical resistance, mechanical properties, and electrical insulation properties. This effectively improves the release cloth's high-temperature resistance and reduces damage to it from high-temperature environments. This design enhances the release cloth's high-temperature resistance.

[0012] Preferably, the mesh layer is made of a wear-resistant material and is provided with a plurality of through holes distributed in a circumferential manner. Since contact with the workpiece is required, the area of ​​release of the plane contact is large, which easily leads to difficulty in separation. Therefore, a mesh layer is installed on the high-temperature resistant layer, and a plurality of evenly distributed through holes are opened on the mesh layer. The through holes are polygonal, thereby reducing the contact area between the mesh layer and the workpiece, ensuring that the demoulding cloth is easy to be separated after the workpiece is formed. The mesh layer is made of a wear-resistant material to improve the wear resistance of the demoulding cloth, thereby increasing its service life. The shape of the mesh layer ensures that the demoulding cloth is not prone to wrinkles and can better fit the mold. Such a design facilitates the separation of the demoulding cloth.

[0013] Preferably, the mesh layer is coated with an easy-to-release coating, which is made of boron nitride coating. At the same time, in order to prevent the mesh layer from adhering to the workpiece, an easy-to-release coating is applied to the mesh layer and the high-temperature resistant layer at the through hole to ensure that the release cloth will not adhere to the workpiece. The easy-to-release coating is made of boron nitride coating, which has excellent lubricity, non-wetting properties and good high-temperature stability. This design can prevent adhesion,

[0014] The beneficial effects of the utility model are: improving the service life by strengthening the anti-pulling ability and high temperature resistance, improving the anti-pulling ability of the demoulding cloth, facilitating the separation of the demoulding cloth, preventing the demoulding cloth from being penetrated, improving the high temperature resistance of the demoulding, facilitating the separation of the demoulding cloth, and preventing adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle grid layer.

[0017] In the figure: 1. Base fabric layer; 2. Tensile-resistant layer; 3. Easy-to-tear layer; 4. Reinforcement layer; 5. High-temperature resistant layer; 6. Mesh layer; 7. Through hole; 8. Easy-to-remove coating. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 In an embodiment, a porous isolation membrane release cloth structure for a blade vacuum infusion molding process includes a base cloth layer 1, a tensile layer 2 is provided on the outside of the base cloth layer 1, one side of the tensile layer 2 is connected to the base cloth layer 1, and an easy-tear layer 3 is installed on the other side of the tensile layer 2, a reinforcement layer 4 is installed on the inner side of the base cloth layer 1, a high-temperature resistant layer 5 is installed on the reinforcement layer 4, and a mesh layer 6 is installed on the high-temperature resistant layer 5.

[0020] The base fabric layer 1 is made of glass cloth, the anti-tension layer 2 is installed on one side of the base fabric layer 1, the anti-tension layer 2 is made of polyethylene fiber, and the anti-tension layer 2 is connected to one side of the base fabric layer 1 by adhesive.

[0021] The easy-tear layer 3 is made of polyurethane material and is connected to the anti-tension layer 2 via an adhesive.

[0022] The reinforcement layer 4 is installed on the other side of the base fabric layer 1 . The reinforcement layer 4 is made of carbon fiber and is connected to the base fabric by an adhesive.

[0023] The high temperature resistant layer 5 is made of a polyimide film and is connected to the reinforcement layer 4 via an adhesive.

[0024] like Figure 2 As shown, the mesh layer 6 is made of wear-resistant material and is provided with a plurality of through holes 7 distributed in a circumference. The mesh layer 6 is coated with an easy-to-release coating 8, which is made of boron nitride coating.

[0025] Regarding the performance of the release cloth, the base fabric layer 1, made of glass cloth, ensures its main strength. The outer layer 2, made of polyethylene fiber, enhances its tear resistance, ensuring that repeated pulling during the demolding process does not damage the release cloth. An easy-tear layer 3 is then installed on the outer layer to ensure easy separation from the mold, allowing for replacement of the release cloth.

[0026] The carbon fiber reinforcement layer 4, installed on the other side of the base fabric layer 1, enhances the stripping cloth's puncture resistance and overall strength. The high-temperature-resistant layer 5, installed on the outside of the reinforcement layer 4, significantly improves the cloth's heat resistance, preventing damage from high temperatures. A mesh layer 6, designed for easy removal, is then installed on the high-temperature-resistant layer. This mesh layer 6 is made of a wear-resistant material, enhancing the cloth's wear resistance. However, to prevent the mesh layer from adhering to the workpiece, a removable coating 8 is applied to the mesh layer to facilitate separation. The various functional layers are connected by adhesive.

Claims

1. A porous isolation membrane release cloth structure for a blade vacuum infusion molding process, characterized by: The invention comprises a base fabric layer (1), wherein a tensile layer (2) is provided on the outer side of the base fabric layer (1), one side of the tensile layer (2) is connected to the base fabric layer (1), an easy-tear layer (3) is installed on the other side of the tensile layer (2), a reinforcement layer (4) is installed on the inner side of the base fabric layer (1), a high-temperature resistant layer (5) is installed on the reinforcement layer (4), and a mesh layer (6) is installed on the high-temperature resistant layer (5).

2. The structure of the pore isolation film release cloth in the blade vacuum infusion molding process according to claim 1 is characterized in that: The base fabric layer (1) is made of glass cloth, the anti-tensile layer (2) is installed on one side of the base fabric layer (1), the anti-tensile layer (2) is made of polyethylene fiber, and the anti-tensile layer (2) is connected to one side of the base fabric layer (1) by an adhesive.

3. The structure of the pore isolation film release cloth in the blade vacuum infusion molding process according to claim 1 is characterized in that: The easy-tear layer (3) is made of polyurethane material, and the easy-tear layer (3) is connected to the tensile layer (2) via an adhesive.

4. The structure of the pore isolation film release cloth in the blade vacuum infusion molding process according to claim 1 is characterized in that: The reinforcement layer (4) is installed on the other side of the base fabric layer (1), the reinforcement layer (4) is made of carbon fiber, and the reinforcement layer (4) is connected to the base fabric by an adhesive.

5. The structure of the pore isolation film release cloth in the blade vacuum infusion molding process according to claim 1 is characterized in that: The high temperature resistant layer (5) is made of a polyimide film, and the high temperature resistant layer (5) is connected to the reinforcement layer (4) via an adhesive.

6. The structure of the pore isolation film release cloth in the blade vacuum infusion molding process according to claim 1 is characterized in that: The mesh layer (6) is made of a wear-resistant material, and is provided with a plurality of through holes (7) distributed in a circumferential manner.

7. The structure of the pore isolation film release cloth in the blade vacuum infusion molding process according to claim 1 is characterized in that: The mesh layer (6) is coated with an easily removable coating (8), and the easily removable coating (8) is made of boron nitride coating.

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