Aviation coating cleaning agent
By developing a water-based aviation coating cleaning agent containing specific ingredients, the corrosion problems of existing cleaning agents on aircraft materials and the difficulty of removing stubborn dirt is solved, and efficient, safe and environmentally friendly cleaning effects are achieved, and the service life of the coating is extended.
Patent Information
- Application Number
- CN202510057479.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-04-18
AI Technical Summary
During the cleaning process, existing aircraft surface cleaning agents may cause corrosion or other damage to a variety of materials in the aircraft, and it is difficult to effectively remove stubborn dirt, affecting the performance and service life of the coating.
A water-based aviation coating cleaning agent was developed, containing 0.1%-0.5% styrene triazole, 0.5%-4.5% alkyl glycoside, 0.5%-4.5% amphoteric betaine, 2.5%-4.5% sodium alkyl sulfonate, 2.5%-4.5% Tween 80, 0.5%-4.5% triethanolamine and 77%-93.4% water. The formulation was adjusted to improve cleaning efficiency and material compatibility.
Without damaging the aircraft surface material, the cleaning agent can efficiently remove dirt, maintain coating performance, extend service life, and comply with environmental and biodegradable standards.
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of chemical materials, and in particular relates to cleaning agent-related technologies specially developed and designed for daily maintenance of aircraft surface coatings. Background Art
[0002] This technology is mainly used for cleaning the outer surface coating of aircraft. During the mission and parking period, salt, dust, sand, oil and other pollutants will inevitably accumulate on the outer surface coating and components of aviation equipment. In order to prevent the adhesion of pollutants, resulting in reduced surface finish, local corrosion and even threats to aircraft performance and safety, cleaning should be used as a daily maintenance measure for the surface of aviation equipment.
[0003] The United States has included cleaning as a daily anti-corrosion maintenance measure in the corrosion maintenance regulations as a standard mandatory implementation, and Boeing, McDonnell Douglas and other aircraft manufacturers have strictly stipulated in their respective aircraft maintenance and repair manuals the manufacturers and material brands of aircraft surface cleaning agents that meet the requirements and are available for selection, such as B&B series aircraft cleaning agents, Cee-Bee series cleaning agents, etc. The commonly used surface cleaning agents for foreign aircraft can usually be summarized into four types according to their composition: water-based, aromatic, abrasive particles and non-friction rubber particles. Among them, water-based cleaning agents use water as a solvent and add surfactants. They have the advantages of low pollution, low toxicity, easy degradation, safe and convenient transportation, and are the most widely used. At the same time, considering the protection of the structure and performance of the aircraft surface coating, water-based surface cleaning agents should be used as a priority for daily cleaning and maintenance of aircraft surfaces with special performance coatings. Using the right cleaning agent to effectively clean the equipment surface is an important part of the equipment corrosion control process and coating maintenance, which will play a very important role in ensuring the safety and reliability of the equipment and extending the service life of the equipment.
[0004] At the same time, since the cleaning agent will come into contact with a variety of aircraft materials when cleaning the aircraft, including bare metal, alloy structures, organic coatings, metal plating layers, insulated wires and rubber sealing materials, the performance of the cleaning agent should be comprehensively considered when evaluating the cleaning agent, and an aircraft surface coating cleaning agent with excellent decontamination ability, good material compatibility, low corrosion, environmental compliance and no effect on coating performance should be developed to meet the stringent requirements of aircraft surface maintenance and repair operations for surface cleanliness, integrity, safety and special needs.
[0005] In the above background, the water-based aviation coating cleaning agent was developed to clean the aircraft coating without destroying the coating structure and performance, so as to effectively remove various pollutants such as salt, dust, wind and sand, oil, etc., thereby preventing and delaying the occurrence of local corrosion such as crevice corrosion and pitting corrosion, maintaining the coating performance while extending its service life, and ensuring the cleanliness and safety of the equipment. Summary of the invention
[0006] The invention discloses an aviation coating cleaning agent and a preparation method thereof. The cleaning agent comprises, by mass percentage, 0.1%-0.5% of benzotriazole, 0.5%-4.5% of alkyl glycoside, 0.5%-4.5% of amphoteric betaine, 2.5%-4.5% of sodium alkyl sulfonate, 2.5%-4.5% of Tween 80, 0.5%-4.5% of triethanolamine, and 77%-93.4% of water.
[0007] The coating cleaning agent of the present invention has little effect on the coating on the surface of the aircraft or the materials of various parts that may be touched by cleaning, has a stronger cleaning efficiency for stubborn dirt, has high cleaning efficiency, good emulsification performance, good stability, does not leave residues and stains after cleaning, has low toxicity and biodegradability that meets national standards, will not cause corrosion to metal materials such as magnesium alloys, aluminum alloys, aluminum-lithium alloys, silver-plated steel and carbon steel of the aircraft, will not cause hydrogen embrittlement of chrome-plated steel plates, has no obvious corrosive effect on painted metal surfaces, acrylic plastics, polycarbonate plastics, and polyimide insulated wires, and has an effect on the hardness of polysulfide sealants and rubbers within the standard range. DETAILED DESCRIPTION
[0008] The present invention provides a novel aviation coating cleaning agent. By adjusting the product components, the following aviation coating cleaning agents are now configured by weight percentage:
[0009] 1. 0.1% benzotriazole, 0.5% alkyl glycoside, 0.5% amphoteric betaine, 2.5% sodium alkyl sulfonate, 2.5% Tween 80, 0.5% triethanolamine, 93.4% water.
[0010] 2.0.3% benzotriazole, 2% alkyl glycoside, 2% amphoteric betaine, 3% sodium alkyl sulfonate, 3% Tween 80, 3.7% triethanolamine, 86% water.
[0011] 3.0.5% benzotriazole, 3% alkyl glycoside, 3% amphoteric betaine, 3% sodium alkyl sulfonate, 3% Tween 80, 2.5% triethanolamine, 85% water.
[0012] The product with the above formula is usually diluted with water at a ratio of 1:9. The product has the advantages of high cleaning efficiency, safety, non-combustibility, and easy transportation and use.
[0013] This formula product has been tested for the following: performance requirements, stability, physical and chemical properties, and effects on metal and non-metal materials.
[0014] Performance requirements for use: cleaning efficiency, emulsification, residue washability, toxicity, and biodegradability.
[0015] Stability: thermal stability, low temperature stability, long-term storage stability.
[0016] Physical and chemical properties: insoluble matter, pH value.
[0017] Effects on metal and non-metallic materials: full immersion corrosion, crevice corrosion, full immersion corrosion of low brittle cadmium-plated steel, hydrogen embrittlement, effects on unpainted metal surfaces, effects on painted metal surfaces, stress corrosion cracking of acrylic plastics, stress corrosion cracking of polycarbonate plastics, effects on polyimide insulated wires, full immersion corrosion of hot-dip galvanized steel, effects on polysulfide sealants, and compatibility with rubber.
[0018] The above cleaning efficiency, the impact on the unpainted metal surface, the hot-dip galvanized steel plate full immersion corrosion test should be carried out in the state of 10% volume fraction of the cleaning agent aqueous solution.
[0019] The above-mentioned emulsification, effect on painted metal surfaces, stress corrosion cracking of acrylic plastics, stress corrosion cracking of polycarbonate plastics, effect on polysulfide sealants, and rubber compatibility experiments should be carried out in a 25% volume fraction of detergent aqueous solution state.
[0020] The above residue cleanability test should be carried out in a cleaning agent solution diluted in standard hard water with a volume fraction of 25%.
[0021] The above toxicity and biodegradability should be certified by the manufacturers of the raw materials of the cleaning agent products.
[0022] The above-mentioned experiments on thermal stability, low temperature stability, long-term storage stability, insoluble matter, and the effect on polyimide insulated wires should be carried out in the state of concentrated cleaning agent solution.
[0023] The above pH values, full immersion corrosion, crevice corrosion, full immersion corrosion of low-brittle cadmium-plated steel sheets and hydrogen embrittlement experiments should be carried out in two states: a concentrated cleaning agent solution and a cleaning agent aqueous solution with a volume fraction of 10%.
[0024] The performance requirements, stability, physical and chemical properties, and effects on metal and non-metal materials of this formula product all meet actual usage needs.
Claims
1. An aviation coating cleaning agent, characterized in that: At a certain temperature, emulsifiers, corrosion inhibitors and other ingredients are dissolved and added in sequence. The ingredients, calculated by mass percentage, include: 0.1%-0.5% benzotriazole, 0.5%-4.5% alkyl glycoside, 0.5%-4.5% amphoteric betaine, 2.5%-4.5% sodium alkyl sulfonate, 2.5%-4.5% Tween 80, 0.5%-4.5% triethanolamine, and 77%-93.4% water.
2. The aviation coating cleaning agent according to claim 1, characterized in that: The dissolving temperature is 10-60°C.
3. The aviation coating cleaning agent according to claim 1, characterized in that: The sequential addition and dissolution is to add and dissolve benzotriazole, alkyl glucoside, amphoteric betaine, sodium alkyl sulfonate, Tween 80 and triethanolamine in the order of addition and dissolution during the stirring process before adding and dissolving the next material.
4. The aviation coating cleaning agent according to claim 1, characterized in that: The water is deionized water with an electrical conductivity lower than 10 μs / cm.