Insulator cleaning agent and preparation method thereof

Abstract

The application relates to the field of cleaning agents, and particularly discloses an insulator cleaning agent and a preparation method thereof. The insulator cleaning agent comprises the following raw materials in parts by weight: 1-5 parts of a fatty alcohol polyoxyethylene ether, 2-6 parts of ethyl acetate, 0.5-2 parts of coconut diethanolamide, 10-14 parts of a hydrocarbon solvent, 1-3 parts of isoamyl acetate and 0.3-0.7 parts of coumarone resin. The hydrocarbon solvent is a C8-C10 hydrocarbon solvent. The composition can be used for cleaning charged insulators, and has the advantages of good cleaning effect and high-voltage charged cleaning resistance.

Description

Technical Field

[0001] This application relates to the field of cleaning agents, and more specifically, to an insulator cleaning agent and a method for preparing the same. Background Technology

[0002] Insulators are devices installed between conductors at different potentials or between a conductor and a grounding component, capable of withstanding voltage and mechanical stress. They consist of two main parts: insulating components and connecting metal parts, achieving electrical insulation and mechanical fixation. During long-term operation, insulators are exposed to air pollution and natural dust, inevitably causing solid, liquid, and gaseous contaminant particles to adhere to their surfaces. These contaminants are generally conductive and hygroscopic, and in humid weather, they significantly reduce the insulation level of the insulator. While dirt accumulated by gravity is easily removed from surfaces, dirt adhering to surfaces through electrostatic attraction and molecular adsorption forms a stronger adhesion, making it difficult to remove using conventional cleaning methods. These contaminants not only affect the insulation performance of the insulator, causing surface current leakage, but also, due to the accumulation of contaminants, cause some dust particles to polarize, leading to abnormal discharges and potentially causing equipment component breakdown and incalculable losses. Therefore, it is essential to clean insulators that are in long-term operation regularly.

[0003] Cleaning during power outages would result in significant economic losses. Therefore, live-line cleaning is currently the primary method for deep cleaning and maintenance of live equipment. The core of live-line cleaning is the insulator cleaning agent. Live-line cleaning of insulators effectively removes deep-seated contaminants from their surfaces, preventing high-voltage insulator accidents. However, currently used live-line cleaning agents have poor penetration and are ineffective at cleaning heavily contaminated insulators. Therefore, there is a need to develop a more effective insulator cleaning agent. Summary of the Invention

[0004] To improve the cleaning effect of insulator cleaning agents, this application provides an insulator cleaning agent and its preparation method.

[0005] Firstly, the insulator cleaning agent provided in this application adopts the following technical solution: An insulator cleaning agent comprises the following raw materials in parts by weight: The ingredients are: 1-5 parts fatty alcohol polyoxyethylene ether, 2-6 parts ethyl acetate, 0.5-2 parts coconut oil diethanolamide, 10-14 parts hydrocarbon solvent, 1-3 parts isoamyl acetate, and 0.3-0.7 parts coumarone resin; wherein the hydrocarbon solvent is a C8-C10 hydrocarbon solvent.

[0006] By adopting the above technical solution, hydrocarbon solvents are used as the main component of the cleaning agent. These solvents offer excellent cleaning performance, do not damage the material surface, leave no oil stains after cleaning, and have low surface tension, which facilitates penetration into the surface where contaminants contact the insulator, thus improving the cleaning effect. Limiting the carbon chain length of the hydrocarbon solvent ensures good volatility of the cleaning agent, allowing it to encapsulate and evaporate contaminants after penetrating and wetting the insulator surface.

[0007] Coconut oil diethanolamide is used as a stabilizer in cleaning agents to improve their conductivity and dielectric properties, thereby helping them maintain their cleaning effect and stability. It also inhibits foam generation, making cleaning easier and improving the cleaning effect. Coumarin resin is fully dissolved in ethyl acetate and isoamyl acetate and mixed with other raw materials in the cleaning agent to form a homogeneous solution. Its good insulation properties help improve the voltage resistance of the cleaning solution, and coumarin resin can form a protective layer on the surface of the insulator, isolating static charge to the outside, eliminating static electricity, and avoiding interference and damage to the insulator by static charge during the cleaning process.

[0008] Ethyl acetate and sodium fatty alcohol polyoxyethylene ether carboxylate, used as surface penetrants in the cleaning agent, assist hydrocarbon compounds in penetrating to the contact surface between the insulator and the dirt, thereby quickly separating the dirt and achieving the cleaning purpose. Furthermore, the added solvents both have low surface tension, allowing them to penetrate into narrow gaps and micropores, resulting in excellent cleaning performance. The use of nonionic surfactants, such as fatty alcohol polyoxyethylene ether, in the formulation prevents foaming, avoids leaving marks, and enhances the cleaning effect.

[0009] The main components of dirt are silicon dioxide, sulfides, and organic matter such as carbon, animal and plant oils, and mineral oils. It is highly non-polar. The carbon-hydrogen bonds in the cleaning agent generate van der Waals attraction with the dirt, causing adsorption. This causes the polar groups in the cleaning agent to face the insulator surface and the air, reducing the van der Waals bonding force between the dirt and the insulator surface, thus encapsulating the dirt and causing it to fall off from the insulator surface.

[0010] Optionally, the insulator cleaning agent comprises the following raw materials in parts by weight: The ingredients are: 2-4 parts fatty alcohol polyoxyethylene ether, 3-5 parts ethyl acetate, 0.5-1.5 parts coconut oil diethanolamide, 11-13 parts hydrocarbon solvent, 1.5-2.5 parts isoamyl acetate, and 0.4-0.6 parts coumarone resin; wherein the hydrocarbon solvent is a C8-C10 hydrocarbon solvent.

[0011] Optionally, the hydrocarbon solvent is a C8-C10 saturated hydrocarbon or cycloalkanes solvent.

[0012] By adopting the above technical solution, this type of hydrocarbon solvent has a fast evaporation rate, stable performance and is not flammable. It contains no aromatic hydrocarbons, is odorless and non-toxic, and has a low dielectric constant and polarizability. This can improve the conductivity and dielectric loss of the cleaning agent, further improve the resistivity and insulation of the cleaning agent, and increase the power frequency breakdown voltage of the cleaning agent.

[0013] Optionally, the hydrocarbon solvent is any one of cyclooctane, nonane and its isomers, and n-decane.

[0014] By adopting the above technical solutions, these hydrocarbon solvents have a high flash point, ensuring safety during the cleaning process and reducing the dangers caused by the generation of flammable gases from solvent evaporation, as well as corrosion or damage to insulators.

[0015] Optionally, the fatty alcohol polyoxyethylene ether is a fatty alcohol polyoxyethylene ether with a degree of polymerization of 5 and a C7-C9.

[0016] By adopting the above technical solution, when fatty alcohol polyoxyethylene ethers with a degree of polymerization of 5 and a carbon chain of C7-C9 are selected, they exhibit good wettability, better penetration and washing effects, help reduce the surface tension of the cleaning agent, improve the wetting effect of the cleaning agent, and thus improve the cleaning effect of the cleaning agent.

[0017] Optionally, the raw material may also include 0.2-0.8 parts of alkyl glycoside.

[0018] By adopting the above technical solution, alkyl glycosides have good penetration and cleaning ability. When added to the cleaning agent, they work synergistically with hydrocarbon solvents, ethyl acetate and other components to further improve the cleaning effect of the cleaning agent. In addition, the addition of alkyl glycosides helps to form an antistatic film on the surface of the insulator, which enhances the insulator's anti-fouling ability for a certain period of time.

[0019] Optionally, the raw materials may also include 0.5-1.5 parts of sodium benzoate.

[0020] By adopting the above technical solution, sodium benzoate is added as an auxiliary agent to increase the permeability of the cleaning agent, which helps the cleaning agent to better adsorb onto the surface of dirt and penetrate into the gaps and micropores of the insulator, thereby further improving the cleaning effect of the cleaning agent.

[0021] Secondly, this application provides a method for preparing an insulator cleaning agent, comprising the following preparation steps: Weigh out fatty alcohol polyoxyethylene ether, ethyl acetate, coconut oil diethanolamide, hydrocarbon solvent, isoamyl acetate, and coumarone resin, mix and stir the above components evenly to prepare the insulator cleaning agent.

[0022] In summary, this application has the following beneficial effects: 1. Since this application uses C8-C10 hydrocarbon solvents as the main components of the cleaning agent, C8-C10 hydrocarbon solvents not only have good solubility and penetration performance, but also better dissolve and penetrate the dirt on the insulator, thereby improving the cleaning agent's decontamination ability; in addition, C8-C10 hydrocarbon solvents also have a high flash point, which can remain stable under high temperature and high pressure. When combined with coumarone resin in the cleaning agent, it can improve the power frequency breakdown voltage of the cleaning agent, and the cleaning agent can be used for live cleaning with a withstand voltage of 500KV.

[0023] 2. In this application, hydrocarbon solvents, fatty alcohol polyoxyethylene ethers, and ethyl acetate are preferably used in combination. These solvents have low surface tension, good wettability and penetration, and can effectively wet dirt, helping the cleaning agent to penetrate into crevices and micropores, thereby further improving the cleaning effect of the cleaning agent.

[0024] 3. In this application, coumarone resin is added and mixed evenly with other components in the raw materials. Its good insulation properties help improve the insulation performance of the insulating cleaning solution, enabling the cleaning solution to clean under high voltage while being charged. At the same time, a protective layer is formed on the surface of the insulator, eliminating the influence of static electricity, avoiding the accumulation of static charge during the cleaning process, protecting the insulator, and preventing flashover or discharge phenomena. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the embodiments.

[0026] Unless otherwise specified in the examples, the procedures should be performed under standard conditions or conditions recommended by the manufacturer. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0027] Coumarin resin was purchased from Hubei Langbowan Biomedical Co., Ltd., and is a solid powder. Example

[0028] Example 1 An insulator cleaning agent is prepared by the following steps: Weigh out 1 kg of isooctyl alcohol polyoxyethylene ether (fatty alcohol polyoxyethylene ether), 6 kg of ethyl acetate, 0.5 kg of coconut oil diethanolamide, 14 kg of cyclooctane (hydrocarbon solvent), 3 kg of isoamyl acetate, and 0.3 kg of coumarone resin. Mix the above components in a container, stir evenly, and stir at 500 r / min for 10 min to ensure complete dissolution of the components, thus preparing the insulator cleaning agent. In this embodiment, the fatty alcohol polyoxyethylene ether used is a fatty alcohol polyoxyethylene ether with a degree of polymerization of 5 and a carbon chain length of 8, and the hydrocarbon solvent is a cycloalkane solvent with a carbon chain length of 8.

[0029] Example 2-3 An insulator cleaning agent differs from that of Example 1 in that its raw material components and their corresponding weight parts are shown in Table 1.

[0030] Table 1. Raw materials and their weights (kg) in Examples 1-3 Isooctyl alcohol polyoxyethylene ether 1 2.5 5 Ethyl acetate 6 4 2 coconut oil diethanolamide 0.5 1 2 Cyclooctane 14 12 10 Isoamyl acetate 3 2 1 Coumarin resin 0.3 0.5 0.7 Example 4 An insulator cleaning agent, which differs from Example 2 in that the fatty alcohol polyoxyethylene ether used in this example is 2-propylheptanol polyoxyethylene ether with a degree of polymerization of 5.

[0031] Example 5 An insulator cleaning agent, which differs from Example 2 in that the hydrocarbon solvent used in this example is n-decane.

[0032] Example 6 An insulator cleaning agent, differing from Example 2 in that it further includes 0.2 kg of hexadecyl glycoside, and its preparation comprises the following steps: Weigh out 2.5 kg of isooctanol polyoxyethylene ether, 4 kg of ethyl acetate, 1 kg of coconut oil diethanolamide, 12 kg of cyclooctane (hydrocarbon solvent), 2 kg of isoamyl acetate, 0.5 kg of coumarone resin, and 0.2 kg of hexadecyl glycoside. Mix the above components in a container, stir evenly, and stir at 500 r / min for 10 min to completely dissolve the components, thus preparing the insulator cleaning agent.

[0033] Example 7 An insulator cleaning agent, differing from Example 6 in that it further includes 0.5 kg of sodium benzoate, and is prepared by the following steps: Weigh out 2.5 kg of isooctanol polyoxyethylene ether, 4 kg of ethyl acetate, 1 kg of coconut oil diethanolamide, 12 kg of cyclooctane (hydrocarbon solvent), 2 kg of isoamyl acetate, 0.5 kg of coumarone resin, 0.2 kg of hexadecyl glycoside, and 0.5 kg of sodium benzoate. Mix the above components in a container, stir evenly, and stir at 500 r / min for 10 min to completely dissolve the components, thus preparing the insulator cleaning agent.

[0034] Example 8 An insulator cleaning agent, which differs from Example 2 in that the fatty alcohol polyoxyethylene ether used in this example is dodecyl alcohol polyoxyethylene ether with a degree of polymerization of 5.

[0035] Example 9 An insulator cleaning agent, which differs from Example 2 in that the fatty alcohol polyoxyethylene ether used in this example is isopentenyl alcohol polyoxyethylene ether with a degree of polymerization of 5.

[0036] Example 10 An insulator cleaning agent, which differs from Example 2 in that the degree of polymerization of the fatty alcohol polyoxyethylene ether used in this example is 7.

[0037] Comparative Example Comparative Example 1 An insulator cleaning agent, which differs from Example 1 in that the hydrocarbon solvent used in this comparative example is dodecane.

[0038] Comparative Example 2 An insulator cleaning agent, which differs from Example 1 in that the hydrocarbon solvent used in this comparative example is n-pentane.

[0039] Comparative Example 3 An insulator cleaning agent, which differs from Example 1 in that no coumarone resin is added in this comparative example.

[0040] Performance testing Testing methods / test methods for cleaning effect: The cleaning rate was tested according to the method shown in 6.7 of GB / T25097-2010 "Cleaning agents for live insulators". Breakdown voltage: The breakdown voltage of the insulator cleaning agent is tested according to GB / T507-2002 "Determination of Breakdown Voltage of Insulating Oil". The two electrodes of the oil cup are installed on a horizontal axis with a gap of 2.5 mm. During the test, the voltage is increased at a constant speed of 2 kV / s until the sample breaks down. The breakdown voltage is the voltage value at which the first spark occurs between the electrodes. After each breakdown, the electrodes are stirred several times with a prepared glass rod or by other means to remove the free carbon generated by the breakdown. The mixture is then allowed to stand for 1-5 minutes until the bubbles disappear before the next test. The breakdown strength test of the cleaning agent should be performed continuously for 6 times. The arithmetic mean of the breakdown voltages of the 6 tests is taken as the power frequency breakdown voltage of the sample. Dry bulb temperature: 31℃; ambient humidity: 45.2%; atmospheric pressure: 100.4 kPa. Surface tension test of cleaning agent: The surface tension of the liquid is determined according to GB / T22237-2008 "Determination of surface tension of surfactant".

[0041] Table 2 Test Results Combining Examples 1-3, Example 5, and Comparative Examples 1-2 with Table 2, it can be seen that the experimental data of Examples 1-3 are all superior to those of Comparative Examples 1-2. This indicates that when hydrocarbon solvents with carbon chain lengths between 8 and 10 are selected, they have a better synergistic effect with other components in the cleaning agent, improving the cleaning effect. By limiting the carbon chain length of the hydrocarbon solvent, on the one hand, the surface tension of the cleaning agent is reduced, making it easier for the cleaning agent to spread, wet, and penetrate the surface of the dirt, which is more conducive to the removal of dirt. On the other hand, it prevents the cleaning agent from being too volatile due to excessively long carbon chains, which would make it difficult for dirt to detach from the surface.

[0042] Combining Examples 1-3 and Comparative Example 3 with Table 2, it can be seen that the test data of Examples 1-3 are all better than those of Comparative Example 3. When coumarone resin is missing in the raw materials, the power frequency breakdown voltage of the cleaning agent is greatly reduced, and the surface tension and cleaning effect of the cleaning agent are also reduced. This indicates that coumarone resin can work together with hydrocarbon solvents to reduce the surface tension of the cleaning agent, thereby improving the wetting performance and cleaning efficiency of the cleaning agent. Furthermore, coumarone resin can be used as a medium material in the cleaning agent to improve the stability of the cleaning agent, making it less prone to breakdown in an electric field, thus increasing the power frequency breakdown voltage of the cleaning agent and achieving a withstand voltage of 500KV during live cleaning.

[0043] Combining Examples 2, 4, and 8-10 with Table 2, it can be seen that the test data of Examples 2 and 4 are all better than those of Examples 8-10. This indicates that limiting the type of fatty alcohol polyoxyethylene ether is beneficial to improving the various properties of the cleaning agent. Fatty alcohol polyoxyethylene ethers with a degree of polymerization of 5 and C7-C9 have better penetration and washing effects, help reduce the surface tension of the cleaning agent, improve the wetting effect of the cleaning agent, and improve the cleaning effect of the cleaning agent. When the carbon chain length of the fatty alcohol polyoxyethylene ether exceeds the specified range and dodecyl alcohol polyoxyethylene ether or isopentenyl alcohol polyoxyethylene ether is selected, the penetration performance of the solvent decreases, affecting the cleaning effect of the cleaning agent. When the degree of polymerization of the fatty alcohol polyoxyethylene ether is not 5, it will also reduce the cleaning effect of the cleaning agent.

[0044] Combining Examples 2 and 6 with Table 2, it can be seen that all the test data of Example 6 are better than those of Example 2, indicating that the addition of alkyl glycosides can synergistically improve the cleaning effect of the cleaning agent with hydrocarbon solvents, ethyl acetate and other components in the cleaning agent.

[0045] Combining Examples 6 and 7 with Table 2, it can be seen that the test data of Example 7 are all better than those of Example 6, indicating that the addition of sodium benzoate is beneficial to improving the penetration of the cleaning agent, allowing it to penetrate into small gaps and micropores that are difficult to clean and adsorb dirt, thus greatly improving the cleaning effect of the cleaning agent.

[0046] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An insulator cleaning agent, characterized in that, Including the following parts by weight of raw materials: 1-5 parts fatty alcohol polyoxyethylene ether, 2-6 parts ethyl acetate, 0.5-2 parts coconut oil diethanolamide, 10-14 parts hydrocarbon solvent, 1-3 parts isoamyl acetate, 0.3-0.7 parts coumarone resin; 0.2-0.8 parts alkyl glycoside, 0.5-1.5 parts sodium benzoate; The hydrocarbon solvent is any one of cyclooctane, nonane and its isomers, and n-decane; The fatty alcohol polyoxyethylene ether is a fatty alcohol polyoxyethylene ether with a degree of polymerization of 5 and a C7-C9.

2. The insulator cleaning agent according to claim 1, characterized in that, The insulator cleaning agent comprises the following raw materials in parts by weight: 2-4 parts fatty alcohol polyoxyethylene ether, 3-5 parts ethyl acetate, 0.5-1.5 parts coconut oil diethanolamide, 11-13 parts hydrocarbon solvent, 1.5-2.5 parts isoamyl acetate, and 0.4-0.6 parts coumarone resin.

3. A method for preparing an insulator cleaning agent as described in any one of claims 1-2, characterized in that, The preparation steps include the following: Weigh out fatty alcohol polyoxyethylene ether, ethyl acetate, coconut oil diethanolamide, hydrocarbon solvent, isoamyl acetate, coumarone resin, alkyl glycoside, and sodium benzoate, mix and stir the above components evenly to prepare the insulator cleaning agent.

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