Ether anhydride type polyimide composite mould pressing material plate
By introducing an antifoaming outer layer, an inner layer, and stainless steel reinforcing ribs into the ether anhydride-type polyimide composite board, the interfacial adhesion problem was solved, resulting in reduced bubbles, increased strength, and extended service life.
Patent Information
- Application Number
- CN202423161551.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing ether anhydride-type polyimide composite boards have weak adhesion at the interface, which easily leads to bubbles and pores, affecting mechanical properties and service life.
It adopts a design with an outer defoaming layer and an inner defoaming layer, combined with stainless steel reinforcing ribs. The outer defoaming layer is made of polyimide resin defoamer, the inner defoaming layer is made of modified polyimide foam, and the coating defoamer is sprayed on the surface. The inner cavity is divided into independent areas.
It effectively reduces the generation and accumulation of bubbles, enhances material strength, extends service life, and ensures a smooth and aesthetically pleasing surface.
Smart Images
Figure CN223533146U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of composite molding material plates, specifically an ether anhydride type polyimide composite molding material plate. Background Technology
[0002] Ether anhydride-type polyimide composite molding material board is a high-performance composite material board prepared through a specific process.
[0003] Most current ether anhydride-based polyimide composite boards are integrally molded. However, pure imide composite boards are prone to developing bubbles and pores at the interface due to the relatively weak adhesion between the polyimide resin and the reinforcing material. These bubbles and pores weaken the mechanical properties and density of the material, thus affecting its service life and stability. Utility Model Content
[0004] The purpose of this invention is to provide an ether anhydride type polyimide composite molding material plate to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides an ether anhydride type polyimide composite molding material plate, including a composite material plate body. The composite material plate body includes an inner material plate layer located inside the composite material plate body and an outer material plate layer located outside the composite material plate body. An outer defoaming layer and an inner defoaming layer are disposed between the outer material plate layer and the inner material plate layer. The outer defoaming layer is disposed outside the inner defoaming layer. The outer defoaming layer is a polyimide resin defoamer, and the inner defoaming layer is a polyimide foam that has been modified by dispersing the defoamer.
[0006] Furthermore, the outer surface of the material board is sprayed with a coating defoamer, which is a polyimide resin defoamer.
[0007] Furthermore, the composite material plate body has an internal cavity, and the inner layer of the material plate is located inside the internal cavity.
[0008] Furthermore, the inner cavity is also provided with multiple reinforcing ribs, which are made of stainless steel.
[0009] Furthermore, the multiple reinforcing ribs divide the inner cavity into multiple filling areas, and two adjacent filling areas are not connected to each other.
[0010] Furthermore, the thickness of the composite material plate body is 1-2.5 mm.
[0011] Compared with the prior art, the beneficial effects of this utility model are: by utilizing the defoaming outer layer and defoaming inner layer located inside the composite material board body, the generation and accumulation of bubbles can be effectively reduced. At the same time, the defoaming agent of the coating sprayed on the surface of the composite material board body can eliminate bubbles on the surface of the composite material board body in a timely manner. Meanwhile, the reinforcing ribs enhance the overall strength of the composite material board body and separate the internal cavities, avoiding mutual interference between bubbles in adjacent cavities, which helps to reduce the diffusion of bubbles inside the cavities, thereby extending the service life of the ether anhydride type polyimide composite molding material board. Attached Figure Description
[0012] Figure 1 This is a cross-sectional view of an ether anhydride type polyimide composite molding material plate;
[0013] Figure 2 This is an external schematic diagram of an ether anhydride type polyimide composite molding material plate;
[0014] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle.
[0015] In the diagram: 1. Composite material board body; 2. Coating defoamer; 3. Defoamer outer layer; 4. Defoamer inner layer; 5. Inner cavity; 6. Outer layer of material board; 7. Inner layer of material board; 8. Reinforcing rib. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] Most current ether anhydride-based polyimide composite boards are integrally molded. However, pure imide composite boards are prone to developing bubbles and pores at the interface due to the relatively weak adhesion between the polyimide resin and the reinforcing material. These bubbles and pores weaken the mechanical properties and density of the material, thus affecting its service life and stability.
[0020] To resolve the above issues, please refer to Figure 1-3 This utility model provides an ether anhydride type polyimide composite molding material plate, including a composite material plate body 1 with a thickness of 1-2.5mm. The composite material plate body 1 includes an inner material plate layer 7 located inside the composite material plate body 1 and an outer material plate layer 6 located outside the composite material plate body 1. An inner cavity 5 is provided inside the composite material plate body 1, and the inner material plate layer 7 is located inside the inner cavity 5. An outer defoaming layer 3 and an inner defoaming layer 4 are provided between the outer material plate layer 6 and the inner material plate layer 7. The outer defoaming layer 3 is located outside the inner defoaming layer 4. The outer defoaming layer 3 is a polyimide resin defoamer, and the inner defoaming layer 4 is a polyimide foam modified by the defoamer dispersion. It can not only improve the mechanical properties of pure polyimide foam filled honeycomb composite material, but also play a certain defoaming role. The proportion of the outer defoaming layer 3 and the inner defoaming layer 4 in the composite material plate body 1 can be selected and is affected by the actual material properties of the composite material plate body 1, and can be adjusted in the molding process.
[0021] The inner cavity 5 is also equipped with multiple reinforcing ribs 8, which are made of stainless steel. This helps to improve the overall strength of the composite material plate body 1. The multiple reinforcing ribs 8 divide the inner cavity 5 into multiple filling areas. The two adjacent filling areas are not connected to each other, which separates the inner cavity 5 and avoids the mutual influence of air bubbles between adjacent inner cavities 5. This helps to reduce the diffusion of air bubbles inside the inner cavity 5, thereby extending the service life of the ether anhydride type polyimide composite molding material plate.
[0022] Preferably, the outer layer 6 of the material board is coated with a paint defoamer 2. The paint defoamer 2 is a polyimide resin defoamer, which can effectively reduce the surface tension of the liquid, making the bubbles easier to break, thereby achieving the defoaming effect and ensuring the smoothness and aesthetics of the coating surface.
[0023] Working principle: The defoaming outer layer 3 and defoaming inner layer 4 located inside the composite material board body 1 can effectively reduce the generation and accumulation of bubbles. At the same time, the defoaming agent 2 sprayed on the surface of the composite material board body 1 can eliminate bubbles on the surface of the composite material board body 1 in a timely manner. The reinforcing ribs 8 enhance the overall strength of the composite material board body 1 and separate the internal cavities 5, preventing bubbles in adjacent cavities 5 from affecting each other. This helps reduce the diffusion of bubbles inside the cavities 5, thereby extending the service life of the ether anhydride type polyimide composite molding material board.
[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An ether anhydride type polyimide composite molding material plate, comprising a composite material plate body (1), characterized in that: The composite material board body (1) includes an inner layer (7) of the composite material board body (1) and an outer layer (6) of the composite material board body (1) outside the composite material board body (1). An outer defoaming layer (3) and an inner defoaming layer (4) are provided between the outer layer (6) and the inner layer (7). The outer defoaming layer (3) is located outside the inner defoaming layer (4). The outer defoaming layer (3) is a polyimide resin defoamer, and the inner defoaming layer (4) is a polyimide foam that has been modified by the defoamer dispersion.
2. The ether anhydride type polyimide composite molding material plate as described in claim 1, characterized in that: The outer layer (6) of the material board is coated with a paint defoamer (2), which is a polyimide resin defoamer.
3. The ether anhydride type polyimide composite molding material plate as described in claim 2, characterized in that: The composite material plate body (1) has an inner cavity (5) inside, and the inner layer (7) of the material plate is located inside the inner cavity (5).
4. The ether anhydride type polyimide composite molding material plate as described in claim 3, characterized in that: The inner cavity (5) is also provided with a plurality of reinforcing ribs (8), which are made of stainless steel.
5. The ether anhydride type polyimide composite molding material plate as described in claim 4, characterized in that: The multiple reinforcing ribs (8) divide the inner cavity (5) into multiple filling areas, and two adjacent filling areas are not connected to each other.
6. The ether anhydride type polyimide composite molding material plate as described in claim 5, characterized in that: The thickness of the composite material plate body (1) is 1-2.5 mm.