High performance vapor phase rust preventive paper for the field of aviation
By employing a woven mesh structure of aramid fibers and wood pulp fibers and multilayer composite materials in vapor phase rust-preventive paper, the paper's resistance to compression and impact is enhanced, solving the problem of easy damage to traditional rust-preventive paper during air transport and enabling the application of high-performance rust-preventive paper.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YINUO METAL PROTECTION MATERIALS CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-02
Smart Images
Figure CN224313963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a high-performance vapor phase rust inhibitor paper for use in the aviation field, belonging to the technical field of rust inhibitor paper. Background Technology
[0002] Vapor phase corrosion inhibitor paper, as a widely used rust-preventive material in the industrial field, has developed into a relatively mature system. Traditional vapor phase corrosion inhibitor paper mostly uses neutral paper as the base material and achieves metal protection by coating with vapor phase corrosion inhibitors.
[0003] Traditional rust-proof paper substrates have low strength and cannot withstand the high-intensity friction and collisions during the transportation of aerospace parts. When precision components such as aero-engine blades are packaged in wooden pallets and transported in multiple layers, the rust-proof paper is easily damaged, resulting in the loss of its rust-proof function. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a high-performance vapor phase rust inhibitor paper for the aerospace field, which solves the problem of easy damage to rust inhibitor paper in the use of the prior art.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: a high-performance vapor phase rust-preventing paper for the aerospace field, characterized in that: it includes a substrate layer, a barrier layer and a rust-preventing layer, the rust-preventing layer is laminated on one side of the substrate layer, the barrier layer is laminated on the other side of the substrate layer, the substrate layer is formed by a composite of an aramid fiber layer and a wood pulp fiber layer, the rust-preventing layer is formed by a composite of a carrier, an organic corrosion inhibitor layer and an inorganic corrosion inhibitor layer, and the barrier layer includes an oleophobic barrier layer.
[0006] The present invention is further configured such that: the aramid fiber layer and the wood pulp fiber layer are interwoven to form a mesh structure, and a number of nano-cellulose whiskers are disposed in the mesh structure.
[0007] The present invention is further configured such that: the organic corrosion inhibitor layer is formed by a composite of a 5-methylbenzotriazole layer and an alkylated benzotriazole layer.
[0008] The present invention is further configured such that: the inorganic corrosion inhibitor layer is formed by a composite of a sodium molybdate layer, a lanthanum hydroxide layer and a sodium benzoate layer.
[0009] The present invention is further configured such that the oleophobic barrier layer is a polyvinylidene fluoride layer.
[0010] The present invention is further configured such that the carrier includes a porous silica microsphere layer.
[0011] The present invention is further configured such that: the organic corrosion inhibitor layer includes a mercaptobenzimidazole layer, the inorganic corrosion inhibitor layer includes a sodium tungstate layer or a zinc phosphate layer, and the carrier includes a zeolite layer or a modified cellulose nanocrystal layer.
[0012] The beneficial effects of this utility model are: by interweaving the aramid fiber layer and the wood pulp fiber layer to form a mesh structure, the high strength and high modulus of the aramid fiber layer can disperse the stress on the substrate layer, enhance its compressive and impact resistance, and ensure that the anti-rust paper is not damaged when transporting multiple layers stacked together. The wood pulp fiber layer ensures the flexibility of the substrate layer. At the same time, the mesh structure formed by interweaving the two fiber layers will also greatly increase the flexibility of the paper. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] In the diagram: 1. Substrate layer; 2. Barrier layer; 3. Rust-proof layer. Detailed Implementation
[0015] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0016] like Figure 1 As shown, a high-performance vapor phase corrosion inhibitor paper for the aerospace field is characterized by comprising a substrate layer 1, a barrier layer 2, and a corrosion inhibitor layer 3. The corrosion inhibitor layer 3 is laminated on one side of the substrate layer 1, and the barrier layer 2 is laminated on the other side of the substrate layer 1. The substrate layer 1 is formed by a composite of an aramid fiber layer and a wood pulp fiber layer. The corrosion inhibitor layer 3 is formed by a composite of a carrier, an organic corrosion inhibitor layer, and an inorganic corrosion inhibitor layer. The barrier layer 2 is an oleophobic barrier layer.
[0017] The aramid fiber layer is made of aramid fibers, and the wood pulp fiber layer is made of wood pulp fibers.
[0018] The aramid fiber layer and the wood pulp fiber layer are interwoven to form a mesh structure using a wet forming process. The high strength and high modulus of the aramid fiber layer can disperse the stress on the substrate layer 1, enhance its compression and impact resistance, and ensure that the anti-rust paper is not damaged during multi-layer stacking and transportation. The wood pulp fiber layer ensures the flexibility of the substrate layer 1. At the same time, the mesh structure formed by the two fiber layers also greatly increases the paper's flexibility.
[0019] The addition of several nano-cellulose whiskers to the network structure further enhances the strength and toughness of the substrate layer 1.
[0020] The organic corrosion inhibitor layer is composed of a 5-methylbenzotriazole layer containing 5-methylbenzotriazole and an alkylbenzotriazole layer containing alkylated benzotriazole. The nitrogen atoms on the heterocycles in the 5-methylbenzotriazole and alkylated benzotriazole form coordination bonds with the surfaces of aluminum alloys and titanium alloys, which can inhibit anodic dissolution.
[0021] The inorganic corrosion inhibitor layer is formed by a composite of a sodium molybdate layer containing sodium molybdate, a lanthanum hydroxide layer containing lanthanum hydroxide, and a sodium benzoate layer containing sodium benzoate.
[0022] Organic corrosion inhibitor layers can form a passivation film on the surface of carbon steel, while inorganic corrosion inhibitor layers can form a protective film on the surface of titanium alloys through adsorption.
[0023] The carrier is a porous silica microsphere layer, and an organic corrosion inhibitor layer and an inorganic corrosion inhibitor layer are embedded in the porous silica microsphere layer by a sol-gel method.
[0024] The oleophobic barrier layer is a polyvinylidene fluoride (PVDF) layer, which includes a base layer. The PVDF layer is formed by coating a PVDF solution onto the surface of the base layer and then curing it by heating. This PVDF layer is then laminated onto the outside of the substrate layer 1 to form the barrier layer 2. This layer effectively blocks the penetration of aviation hydraulic oil and fuel while maintaining air permeability, preventing the corrosion inhibitor from being hindered from evaporating due to complete sealing.
[0025] The carrier, organic corrosion inhibitor layer, and inorganic corrosion inhibitor layer can be equivalently replaced. The replacement scheme is as follows: the organic corrosion inhibitor layer includes a mercaptobenzimidazole layer containing mercaptobenzimidazole, the inorganic corrosion inhibitor layer includes a sodium tungstate layer containing sodium tungstate or a zinc phosphate layer containing zinc phosphate, and the carrier includes a zeolite layer or a modified cellulose nanocrystal layer.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-performance vapor phase corrosion inhibitor paper for use in the aerospace field, characterized in that: It includes a substrate layer (1), a barrier layer (2) and a rust-preventive layer (3). The rust-preventive layer (3) is laminated on one side of the substrate layer (1), and the barrier layer (2) is laminated on the other side of the substrate layer (1). The substrate layer (1) is formed by a composite of an aramid fiber layer and a wood pulp fiber layer. The rust-preventive layer (3) is formed by a composite of a carrier, an organic corrosion inhibitor layer and an inorganic corrosion inhibitor layer. The barrier layer (2) includes an oleophobic barrier layer.
2. The high-performance vapor phase corrosion inhibitor paper for the aerospace field according to claim 1, characterized in that: The aramid fiber layer and the wood pulp fiber layer are interwoven to form a network structure, and several nano-cellulose whiskers are set in the network structure.
3. The high-performance vapor phase corrosion inhibitor paper for the aerospace field according to claim 1, characterized in that: The organic corrosion inhibitor layer is formed by a composite of a 5-methylbenzotriazole layer and an alkylated benzotriazole layer.
4. The high-performance vapor phase corrosion inhibitor paper for the aerospace field according to claim 1, characterized in that: The inorganic corrosion inhibitor layer is formed by a composite of a sodium molybdate layer, a lanthanum hydroxide layer, and a sodium benzoate layer.
5. The high-performance vapor phase corrosion inhibitor paper for the aerospace field according to claim 1, characterized in that: The carrier consists of a porous silica microsphere layer.
6. The high-performance vapor phase corrosion inhibitor paper for the aerospace field according to claim 1, characterized in that: The oleophobic barrier layer is a polyvinylidene fluoride layer.
7. The high-performance vapor phase corrosion inhibitor paper for the aerospace field according to claim 1, characterized in that: The organic corrosion inhibitor layer includes a mercaptobenzimidazole layer, the inorganic corrosion inhibitor layer includes a sodium tungstate layer or a zinc phosphate layer, and the carrier includes a zeolite layer or a modified cellulose nanocrystal layer.