High-insulation cleaning agent for electrified cleaning of equipment

Abstract

The invention relates to a high-insulation cleaning agent for electrified cleaning of equipment, and belongs to the field of electronic equipment maintenance and precision chemicals. According to the cleaning agent, perfluorohexyl methyl ether subjected to electric field induced fluorine chain polarization self-assembly modification serves as a main solvent, fluorine chain orientation rearrangement is achieved under the low-temperature and high-voltage electric field condition, an ordered polarization layered structure is constructed, and therefore the dielectric strength and the volume resistivity are remarkably improved. 2-hydroxy-2-methylpropionitrile containing hydroxyl and nitrile groups is used as a polarity regulator, and the surface energy of the system is regulated through the intermolecular dipole effect, so that the dissolving and stripping capability on oil stains and conductive dust is enhanced. After the fluorinated surfactant, the silane coupling agent, the antistatic agent and the flame-retardant arc-inhibiting auxiliary agent are compounded, the obtained cleaning agent has high insulativity, low residue and electrified cleaning safety, and is suitable for online safe cleaning of high-voltage electrical equipment and precise electronic control devices.

Description

Technical Field

[0001] This invention belongs to the field of precision electronic chemicals, specifically relating to a high-insulation cleaning agent for cleaning equipment under electrical conditions. Background Technology

[0002] During the operation and maintenance of power systems, rail transit, automated equipment, and precision electronic control systems, equipment is exposed to long-term energized, high-voltage, high-temperature, or high-humidity environments. Its surface easily accumulates complex contaminants such as residual lubricating oil, conductive dust, coolant leaks, and oxide particles. These contaminants can form conductive pathways or areas of concentrated localized electric fields on the equipment surface, causing leakage, breakdown, or arcing, leading to decreased insulation performance, localized overheating, and even short-circuit damage. To ensure continuous equipment operation, safe cleaning under energized conditions has become a key technical means in the maintenance process.

[0003] Existing live-line cleaning agents mainly employ systems such as fluorocarbon solvents, isopropanol, and petroleum ether. While they possess some cleaning capabilities, they still suffer from insufficient insulation performance, high risk of residual conductivity, limited solubility, and poor safety and environmental friendliness. Specifically, the dielectric strength of fluorocarbon solvent systems is typically below 20kV / mm, making them prone to micro-discharge or localized breakdown under medium- to high-voltage electric fields. Alcohols and petroleum-based solvents tend to leave residual polar molecules or impurity ions after cleaning, forming conductive films under humid conditions, further reducing insulation performance. Furthermore, these solvents are highly volatile and have low flash points, posing flammability and poisoning risks, which do not meet current requirements for high-safety and environmentally friendly live-line cleaning.

[0004] In recent years, although some studies have attempted to improve the resistivity of the system by introducing fluoroether or siloxane solvents, problems such as high dielectric loss, insufficient cleaning efficiency, and poor compatibility with precision components still exist due to the disordered molecular polarization direction and random fluorine chain orientation. Therefore, there is an urgent need to develop a high-insulation cleaning agent for live-line cleaning with controllable molecular orientation, stable polarization structure, and excellent insulation properties. This cleaning agent should significantly improve volume resistivity and dielectric strength while maintaining excellent decontamination ability, thereby achieving safe, efficient, and residue-free cleaning of high-voltage equipment. Summary of the Invention

[0005] To overcome the technical problems of insufficient insulation performance, low cleaning efficiency, and high risk of residual conductivity in existing live-line cleaning agents, the present invention aims to provide a high-insulation cleaning agent for live-line cleaning of equipment. This cleaning agent uses perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly and 2-hydroxy-2-methylpropionitrile as the main components, combined with fluorinated surfactants, silane coupling agents, antistatic inhibitors, and flame-retardant arc-suppressing agents to construct a composite system, achieving a balance between high insulation and high decontamination performance. The present invention brings the beneficial effects of low residue after cleaning, high dielectric strength, and safe and stable operation under energized conditions.

[0006] The objective of this invention can be achieved through the following technical solutions: A high-insulation cleaning agent for live-line cleaning of equipment comprises the following raw materials in parts by weight: 80-100 parts of perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly; 10-20 parts of 2-hydroxy-2-methylpropionitrile; 3-8 parts of isopropanol; 0.1-0.5 parts of fluorinated surfactant; 0.2-0.8 parts of γ-aminopropyltriethoxysilane; 0.05-0.2 parts of quaternary ammonium salt antistatic inhibitor; 0.05-0.1 parts of sodium ethylenediaminetetraacetate chelating agent; 0.1-0.3 parts of trifluoropropyl phosphate flame retardant and arc suppressant; and 2 parts of deionized water. ~5 parts; wherein the perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly refers to the modified product in which perfluorohexyl methyl ether is placed under electrostatic induction reaction conditions, and the fluorine chain is oriented and forms an ordered polarized structure under the action of a low temperature and high voltage electric field, thereby significantly improving the dielectric strength and volume resistivity; the 2-hydroxy-2-methylpropionitrile refers to a polar organic small molecule whose molecular structure contains both hydroxyl and nitrile groups, which can adjust the polarity of the system through hydrogen bonding and dipole interaction, reduce surface tension and enhance the dissolving and peeling ability of the cleaning agent on oil and dust.

[0007] Optionally, the perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly comprises the following raw materials in parts by weight: 80-100 parts perfluorohexyl methyl ether; 1-3 parts trifluoromethylacrylamide; 3-5 parts isopropanol; 0.5-1.5 parts tetrafluoroethylene oligomer; and 1-2 parts ethylene glycol dimethyl ether.

[0008] Optionally, the preparation method of perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly includes the following steps: (1) Add perfluorohexyl methyl ether, trifluoromethyl acrylamide, isopropanol, tetrafluoroethylene oligomer and ethylene glycol dimethyl ether to a reaction vessel and stir at room temperature until they are mixed evenly to obtain a mixture; (2) The mixture is placed in an electrostatic induction reaction device and treated with an electrostatic field to induce fluorine chain orientation and polarization self-assembly to form an ordered structure; (3) Stop the electric field, heat up to, cool to room temperature and filter to obtain perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly.

[0009] Optionally, the mixing conditions in step (1) are to stir at room temperature for 30 minutes to obtain a homogeneous mixture.

[0010] Optionally, the reaction conditions in step (2) are to apply a uniform electrostatic field of 6-8 kV / cm at 0-5℃ for 1.5-2 h to induce fluorine chain orientation and polarization rearrangement.

[0011] Optionally, the conditions for step (3) are to heat to 40°C under vacuum and hold for 30 min to fix the orientation structure, cool to room temperature and then filter to obtain the product.

[0012] Optionally, a method for preparing a high-insulation cleaning agent for live-line cleaning of equipment includes the following steps: S1, perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly, 2-hydroxy-2-methylpropionitrile, isopropanol, fluorinated surfactant, γ-aminopropyltriethoxysilane, quaternary ammonium salt type antistatic inhibitor, sodium ethylenediaminetetraacetate chelating agent, trifluoropropyl phosphate flame retardant and arc suppressant and deionized water are sequentially added to the mixing tank. S2, Stir and mix the mixture; S3. Filter the mixture and seal it for storage to obtain a high-insulation cleaning agent for live-line cleaning of equipment.

[0013] Optionally, the reaction conditions in step S1 are as follows: after each component is added in sequence, premixing is performed under a standing time of 5 to 15 minutes to eliminate static electricity and ensure uniform dissolution.

[0014] Optionally, the reaction conditions for step S2 are stirring at a temperature of 35–45°C for 25–35 minutes to ensure that the system is fully mixed and homogeneous.

[0015] Optionally, the reaction conditions in step S3 are as follows: after filtering through a 0.20–0.25 μm microporous membrane to remove impurities, the system is sealed and stored at a temperature of 20–30 °C to maintain its purity and insulation stability.

[0016] The beneficial effects of this invention are: This invention employs an electric field-induced fluorine chain polarization self-assembly modification technique. For the first time, it achieves the orientation reconstruction of perfluorohexyl methyl ether molecular chains under a low-temperature, high-electric-field condition, forming a stable, ordered polarized layered structure. This significantly improves the system's volume resistivity and dielectric strength, ensuring its electrical insulation integrity even under high-voltage electric fields. Simultaneously, it introduces 2-hydroxy-2-methylpropionitrile, a previously unused molecule in this field, as a polarity-regulating small molecule. Through hydroxyl-nitrile dipole interactions, it forms a weak hydrogen-bonded complex interface with the modified fluorine ether, effectively reducing the system's surface tension and enhancing its ability to peel and dissolve greases and conductive dust. The synergistic effect of these two technologies enables the cleaning agent to possess high insulation, low polarization loss, and highly efficient decontamination performance during electrified cleaning, significantly outperforming existing technologies. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 The infrared spectra of perfluorohexyl methyl ether and perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly are compared. Figure 2 A comparison chart of dielectric strength results for samples with different formulation ratios; Figure 3 A comparison chart showing the cleaning efficiency results for samples with different mixing ratios. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. However, the present invention is not limited to the following embodiments. Equivalent adjustments made without departing from the spirit and essence of the present invention should also be considered to fall within the protection scope of the present invention. Example

[0020] This embodiment aims to verify the basic level of dielectric properties and cleaning efficiency of the system when the content of modified fluoroether in the cleaning agent is low, and to provide a basis for determining the minimum effective ratio of the fluoroether system.

[0021] S1, 80 parts of perfluorohexyl methyl ether, 1 part of trifluoromethylacrylamide, 3 parts of isopropanol, 0.5 parts of tetrafluoroethylene oligomer, and 1 part of ethylene glycol dimethyl ether were added to a reaction vessel and stirred at room temperature for 30 min to obtain a homogeneous mixture. The mixture was placed in an electrostatic induction reaction device and subjected to a uniform electrostatic field of 6 kV / cm at 0 °C for 1.5 h to induce fluorine chain orientation and polarization self-assembly. After the electric field was stopped, the temperature was raised to 40 °C under vacuum and held for 30 min to fix the molecular orientation. After cooling to room temperature, the mixture was filtered to obtain perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly. S2, 80 parts of modified perfluorohexyl methyl ether, 10 parts of 2-hydroxy-2-methylpropionitrile, 3 parts of isopropanol, 0.1 parts of fluorinated surfactant, 0.2 parts of γ-aminopropyltriethoxysilane, 0.05 parts of quaternary ammonium salt antistatic inhibitor, 0.05 parts of sodium ethylenediaminetetraacetate, 0.1 parts of trifluoropropyl phosphate, and 2 parts of deionized water were added sequentially to a mixing vessel. After standing and premixing for 10 min, the mixture was stirred at 35°C for 25 min until the system was transparent and homogeneous. S3. The mixture is filtered through a 0.20μm microporous membrane to remove impurities and then sealed and stored at 20℃ to obtain a high-insulation cleaning agent for live-line cleaning of equipment with the lower limit ratio. Example

[0022] This embodiment is used to evaluate the enhanced electrical insulation and charged cleaning performance of the system under the synergistic effect of high-fluorine ether and high-polarity small molecules when the cleaning agent components are at their upper limit ratio.

[0023] S1, 100 parts of perfluorohexyl methyl ether, 3 parts of trifluoromethylacrylamide, 5 parts of isopropanol, 1.5 parts of tetrafluoroethylene oligomer, and 2 parts of ethylene glycol dimethyl ether were added to a reaction vessel and stirred at room temperature for 30 min. The mixture was then placed in an electrostatic induction reaction device and subjected to an 8 kV / cm electrostatic field at 5 °C for 2 h. After the electric field was stopped, the mixture was heated to 40 °C under vacuum and held for 30 min to fix the molecular orientation. After cooling, the mixture was filtered to obtain modified perfluorohexyl methyl ether. Figure 1 The infrared spectrum comparison shows that the perfluorohexyl methyl ether spectrum is dominated by the C–F stretching vibration at 1245 cm⁻¹, with a single peak shape and relatively random molecular orientation. The perfluorohexyl methyl ether modified by electric field-induced polarization self-assembly of fluorinated chains shows new absorption peaks at 1205 cm⁻¹, 1045 cm⁻¹, 965 cm⁻¹, 735 cm⁻¹, and 1725 cm⁻¹, corresponding to C–F splitting peak, C–N stretching, locally polarized C–F, –CF2– wobbling, and C=O vibration, respectively. This indicates that trifluoromethylacrylamide and tetrafluoroethylene oligomers participate in molecular rearrangement under electric field induction. The main peak intensity of the perfluorohexyl methyl ether modified by electric field-induced polarization self-assembly of fluorinated chains is enhanced and the splitting is obvious, indicating that the fluorinated chain orientation is ordered and the polarization dipole is enhanced, forming a stable polarized layered structure, thus verifying the modification effect of electric field-induced polarization self-assembly. S2, 100 parts of modified perfluorohexyl methyl ether, 20 parts of 2-hydroxy-2-methylpropionitrile, 8 parts of isopropanol, 0.5 parts of fluorinated surfactant, 0.8 parts of γ-aminopropyltriethoxysilane, 0.2 parts of quaternary ammonium salt antistatic inhibitor, 0.1 parts of sodium ethylenediaminetetraacetate, 0.3 parts of trifluoropropyl phosphate, and 5 parts of deionized water were added sequentially to a mixing vessel. After standing and premixing for 15 minutes, the mixture was stirred at 45°C for 35 minutes until the system was uniform and transparent. S3. After filtering the mixture through a 0.25μm microporous membrane, it is sealed and stored at 30℃ to obtain a high-insulation cleaning agent for live-line cleaning of equipment with the upper limit ratio. Example

[0024] This embodiment is used to optimize the proportions of each component in order to balance the dielectric strength, cleaning power and stability of the system, and to provide an intermediate ratio reference for industrial production.

[0025] S1, 90 parts of perfluorohexyl methyl ether, 2 parts of trifluoromethylacrylamide, 4 parts of isopropanol, 1 part of tetrafluoroethylene oligomer, and 1.5 parts of ethylene glycol dimethyl ether were added to a reaction vessel and stirred at room temperature for 30 min; the mixture was placed in an electrostatically induced reaction device and subjected to an electric field of 7 kV / cm at 3℃ for 1.8 h; after the electric field was stopped, the mixture was heated to 40℃ under vacuum and held for 30 min, cooled, and filtered to obtain perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly; S2, 90 parts of modified perfluorohexyl methyl ether, 15 parts of 2-hydroxy-2-methylpropionitrile, 5 parts of isopropanol, 0.3 parts of fluorinated surfactant, 0.5 parts of γ-aminopropyltriethoxysilane, 0.1 parts of quaternary ammonium salt antistatic inhibitor, 0.08 parts of sodium ethylenediaminetetraacetate, 0.2 parts of trifluoropropyl phosphate, and 3 parts of deionized water were added sequentially to a mixing vessel. After standing for 10 minutes, the mixture was stirred at 40°C for 30 minutes to make the system homogeneous. S3. The resulting mixture is filtered through a 0.22μm microporous membrane and stored in a sealed container at 25°C to obtain a high-insulation cleaning agent for electrical cleaning of equipment with intermediate proportions.

[0026] Comparative Example 1 The purpose of this comparative example is to verify the insulation performance and cleaning effect of the perfluorohexyl methyl ether system without electric field-induced polarization self-assembly modification under the same formulation conditions, so as to compare the effect of the modification process on the dielectric strength and stability of the system.

[0027] S1, 100 parts of perfluorohexyl methyl ether, 3 parts of trifluoromethylacrylamide, 5 parts of isopropanol, 1.5 parts of tetrafluoroethylene oligomer and 2 parts of ethylene glycol dimethyl ether were added to a reaction vessel and stirred at room temperature for 30 min. The resulting mixture was used directly without electric field induction treatment to obtain an unmodified perfluorohexyl methyl ether system. S2, 100 parts of the unmodified perfluorohexyl methyl ether, 20 parts of 2-hydroxy-2-methylpropionitrile, 8 parts of isopropanol, 0.5 parts of fluorinated surfactant, 0.8 parts of γ-aminopropyltriethoxysilane, 0.2 parts of quaternary ammonium salt antistatic inhibitor, 0.1 parts of sodium ethylenediaminetetraacetate, 0.3 parts of trifluoropropyl phosphate, and 5 parts of deionized water were added sequentially to a mixing vessel, allowed to stand for 15 min for premixing, and then stirred at 45°C for 35 min. S3. The mixture is filtered through a 0.25μm microporous membrane and stored in a sealed container at 30°C to obtain a high-insulation cleaning agent for live-line cleaning of equipment based on an unmodified fluoroether system.

[0028] Comparative Example 2 The purpose of this comparative example is to verify the change in the system's ability to remove oil and dust without the addition of 2-hydroxy-2-methylpropionitrile, in order to evaluate the contribution of the synergistic regulation of polar small molecules to the cleaning performance.

[0029] S1, under the same conditions as in Example 2, 100 parts of perfluorohexyl methyl ether, 3 parts of trifluoromethylacrylamide, 5 parts of isopropanol, 1.5 parts of tetrafluoroethylene oligomer, and 2 parts of ethylene glycol dimethyl ether were added to a reaction vessel and stirred at room temperature for 30 min. The mixture was then placed in an electrostatically induced reaction apparatus and subjected to an 8 kV / cm electrostatic field at 5°C for 2 h. After the electric field was stopped, the mixture was heated to 40°C under vacuum and held for 30 min. After cooling and filtration, modified perfluorohexyl methyl ether was obtained. S2, 100 parts of modified perfluorohexyl methyl ether, 8 parts of isopropanol, 0.5 parts of fluorinated surfactant, 0.8 parts of γ-aminopropyltriethoxysilane, 0.2 parts of quaternary ammonium salt antistatic inhibitor, 0.1 parts of sodium ethylenediaminetetraacetate, 0.3 parts of trifluoropropyl phosphate and 5 parts of deionized water are added to a mixing vessel in sequence, and after standing for 15 min for premixing, the mixture is stirred at 45℃ for 35 min. S3. The mixture is filtered through a 0.25μm microporous membrane and stored in a sealed container at 30°C to obtain a high-insulation cleaning agent for electrical cleaning of equipment that does not contain polar small molecules.

[0030] Comparative Example 3 The purpose of this comparative example is to verify the changes in electrical insulation and cleaning capabilities of a system containing only 2-hydroxy-2-methylpropionitrile without modified fluoroether under the same operating conditions, in order to illustrate the necessity of the synergistic effect of the two.

[0031] S1, take 100 parts of unmodified perfluorohexyl methyl ether and use it directly without electric field induction or modification. S2, 100 parts of perfluorohexyl methyl ether, 20 parts of 2-hydroxy-2-methylpropionitrile, 8 parts of isopropanol, 0.5 parts of fluorinated surfactant, 0.8 parts of γ-aminopropyltriethoxysilane, 0.2 parts of quaternary ammonium salt antistatic inhibitor, 0.1 parts of sodium ethylenediaminetetraacetate, 0.3 parts of trifluoropropyl phosphate, and 5 parts of deionized water are added sequentially to a mixing vessel, allowed to stand for 15 minutes, and then stirred at 45°C for 35 minutes to form a transparent solution; S3. Filter the mixture through a 0.25μm microporous membrane and store it in a sealed container at 30°C to obtain a cleaning agent for electrical cleaning of equipment containing only polarity-modifying small molecules.

[0032] Performance testing 1. Volume resistivity test Take 50 mL of sample and inject it into a parallel electrode test cell. Let it stand for 10 min at 25℃ and 50% relative humidity to remove air bubbles. Use a high-resistivity meter to measure the current and voltage data and automatically calculate the volume resistivity. Take the average of three parallel measurements. By comparing the resistivity of different samples, evaluate the insulation performance of the cleaning agent system.

[0033] 2. Dielectric strength test The degassed sample was injected into a dielectric strength tester, and the voltage was slowly increased until breakdown occurred, with the corresponding voltage value recorded. The test temperature was controlled at 25℃, and the voltage increase rate was kept constant. Each sample was tested three times, and the average value was taken. This test is used to evaluate the breakdown resistance and dielectric stability of the cleaning agent under a high-voltage electric field.

[0034] 3. Cleaning efficiency test Polished copper sheets were selected and uniformly coated with a composite contamination layer containing lubricating oil and graphite powder, with a contamination mass of approximately 0.05 g. The sample was immersed in 25 mL of cleaning agent, magnetically stirred for 5 minutes, then removed, wiped with lint-free paper, and dried. The mass of the residue after cleaning was weighed. The decontamination efficiency of different samples was compared by the change in mass before and after cleaning.

[0035] 4. Safety test for live cleaning An electrical equipment module with a rated voltage of 10kV was selected as the test object and operated under a stable energized state. A cleaning agent was continuously sprayed for 5 seconds at a distance of 10cm from the electrode surface using a spray device. The occurrence of electric arcs, sparks, or current fluctuations was observed throughout the cleaning process, and the leakage current was recorded. If no discharge phenomenon occurred and the leakage current remained stable during spraying, it indicates that the cleaning agent has good safety for energized cleaning.

[0036] Table 1 Performance Test Results Sample number Volume resistivity (Ω·cm) Dielectric strength (kV / mm) Cleaning efficiency (%) Safety of live cleaning (10kV spray) Example 1 1.1×10¹³ 25.4 95.6 No electric arc, stable leakage current Example 2 1.6×10¹³ 28.7 98.3 No electric arc, best insulation stability Example 3 1.3×10¹³ 26.8 96.8 No electric arc, minimal leakage current fluctuation Comparative Example 1 9.2×10¹¹ 19.5 85.2 Slight discharge occurred Comparative Example 2 1.0×10¹² 21.1 88.6 Slight residue on the surface after cleaning Comparative Example 3 8.7×10¹¹ 20.4 86.4 A brief current fluctuation occurred during injection. As shown in Table 1, the overall performance of Examples 1 to 3 is significantly better than that of Comparative Examples 1 to 3, with Example 2 showing the most outstanding performance. The volume resistivity of Example 2 reaches 1.6 × 10¹³ Ω·cm, which is nearly two orders of magnitude higher than that of Comparative Example 1. This indicates that the perfluorohexyl methyl ether modified by electric field-induced fluorine chain polarization self-assembly effectively improves the molecular orientation and charge distribution, enabling the system to maintain extremely high insulation and stability under high voltage conditions. Figure 2 The dielectric strength reached 28.7 kV / mm, demonstrating excellent breakdown resistance and verifying the significant role of the electric field-induced polarization structure in suppressing electric arc and reducing energy loss.

[0037] In terms of cleaning performance, Figure 3The cleaning efficiency of Example 2 reached 98.3%, significantly better than the 88.6% of Comparative Example 2 (which did not contain polar small molecules). This indicates that the polarity-modifying effect of 2-hydroxy-2-methylpropionitrile can effectively reduce the surface tension of the system and enhance its wetting and stripping ability against oil and dust. The cleaning efficiencies of Examples 1 and 3 also exceeded 95%, indicating a stable synergistic enhancement effect between the modified fluoroether and the polar organic small molecules, which is key to achieving high-efficiency cleaning performance.

[0038] The results of the electrical safety test further show that the cleaning agent system of the present invention did not exhibit arcing or breakdown under 10 kV high-voltage spraying conditions, and the leakage current remained stable, demonstrating excellent dielectric stability and arc suppression capability. In contrast, Comparative Examples 1 and 3 showed instantaneous discharge or current fluctuations under the same conditions, indicating that unmodified systems or systems lacking synergistic structures cannot simultaneously achieve both cleaning performance and electrical safety.

[0039] In summary, Example 2 exhibits the best overall performance, fully demonstrating the innovation and application value of this invention in the design of electric field-induced fluorine chain polarization structure and the synergistic regulation mechanism of polar organic small molecules, enabling the cleaning agent to simultaneously possess high insulation, high cleanliness, and high safety under energized operating conditions.

Claims

1. A high-insulation cleaning agent for live cleaning of equipment, characterized by comprising: The high-insulation cleaning agent for equipment electrification cleaning comprises the following raw materials in parts by weight: perfluorohexyl methyl ether modified by electric field induced fluorine chain polarization self-assembly 80-100 parts; 2-hydroxy-2-methyl propionitrile 10-20 parts; isopropyl alcohol 3-8 parts; fluorinated surfactant 0.1-0.5 parts; gamma-aminopropyl triethoxysilane 0.2-0.8 parts; quaternary ammonium salt type antistatic inhibitor 0.05-0.2 parts; sodium ethylenediamine tetraacetate chelating agent 0.05-0.1 parts; trifluoro propyl phosphate flame-retardant arc-suppression agent 0.1-0.3 parts; deionized water 2-5 parts; wherein the perfluorohexyl methyl ether modified by electric field induced fluorine chain polarization self-assembly refers to a modified product with improved dielectric strength and volume resistivity, which is obtained by placing perfluorohexyl methyl ether in electrostatic induction reaction conditions, and making fluorine chains orient and form ordered polarization structure under the action of low-temperature high-voltage electric field. The 2-hydroxy-2-methyl propionitrile refers to a polar small organic molecule with both hydroxyl and nitrile groups in the molecular structure, which can adjust the system polarity, reduce the surface tension and enhance the oil stain and dust dissolving and stripping ability of the cleaning agent through hydrogen bond and dipole interaction.

2. The high-insulation cleaning agent for live-line cleaning of equipment according to claim 1, characterized by The perfluorohexyl methyl ether modified by electric field induced fluorine chain polarization self-assembly comprises the following raw materials in parts by weight: perfluorohexyl methyl ether 80-100 parts; trifluoromethyl acrylamide 1-3 parts; isopropyl alcohol 3-5 parts; tetrafluoroethylene oligomer 0.5-1.5 parts; ethylene glycol dimethyl ether 1-2 parts.

3. The high-insulation cleaning agent for live-line cleaning of equipment according to claim 1, characterized by, The preparation method of the perfluorohexyl methyl ether modified by electric field induced fluorine chain polarization self-assembly comprises the following steps: (1) adding perfluorohexyl methyl ether, trifluoromethyl acrylamide, isopropyl alcohol, tetrafluoroethylene oligomer and ethylene glycol dimethyl ether into a reaction kettle, stirring at room temperature until mixed uniformly to obtain a mixture; (2) placing the mixture into an electrostatic induction reaction device and treating with an electrostatic field; (3) stopping the electric field, heating to 40 ℃, cooling to room temperature, filtering to obtain the perfluorohexyl methyl ether modified by electric field induced fluorine chain polarization self-assembly.

4. The high-insulation cleaning agent for live-line cleaning of a device according to claim 3, characterized by The mixing condition of step (1) is stirring at room temperature for 30 min.

5. The high-insulation cleaning agent for live-line cleaning of equipment according to claim 3, characterized by The reaction condition of step (2) is applying a uniform electrostatic field of 6-8 kV / cm at 0-5 ℃ for 1.5-2 h.

6. The high-insulation cleaning agent for live-line cleaning of an apparatus according to claim 3, characterized by The condition of step (3) is heating to 40 ℃ under vacuum for 30 min, cooling to room temperature, and filtering to obtain the product.

7. A method for producing a high-insulation cleaning agent for live cleaning of equipment, the high-insulation cleaning agent for live cleaning of equipment being as claimed in any one of claims 1 to 6, characterized by, The method comprises the following steps: S1, adding the perfluorohexyl methyl ether modified by electric field induced fluorine chain polarization self-assembly, 2-hydroxy-2-methyl propionitrile, isopropyl alcohol, fluorinated surfactant, gamma-aminopropyl triethoxysilane, quaternary ammonium salt type antistatic inhibitor, sodium ethylenediamine tetraacetate chelating agent, trifluoro propyl phosphate flame-retardant arc-suppression agent and deionized water into a mixing kettle in sequence; S2, stirring and mixing the mixed system; S3, filtering and sealing the mixture to obtain the high-insulation cleaning agent for equipment electrification cleaning.

8. The method of claim 7, wherein the high-insulation cleaning agent for live-line cleaning of equipment is prepared by adding 0.1 to 0.5 parts by weight of the surfactant to 100 parts by weight of the solvent. The reaction condition of step S1 is pre-mixing under the condition that each component is added in sequence and the standing time is 5-15 min.

9. The method of claim 7, wherein the high insulation cleaning agent for live-line cleaning of equipment is prepared by adding 0.1 to 0.5 parts by weight of the surfactant to 100 parts by weight of the solvent. The reaction condition of step S2 is stirring at 35-45 ℃ for 25-35 min.

10. The method of claim 7, wherein the high insulation cleaning agent for live-line cleaning of equipment is prepared by adding 0.1 to 0.5 parts by weight of the surfactant to 100 parts by weight of the solvent. The reaction condition of the step S3 is to store at 20-30℃ after removing impurities by filtering through a 0.20-0.25μm microporous filter.

Images