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CN-121975381-A - Anti-condensation composition, anti-condensation coating, preparation method and application

CN121975381ACN 121975381 ACN121975381 ACN 121975381ACN-121975381-A

Abstract

The invention provides an anti-condensation composition, an anti-condensation coating, a preparation method and application. The anti-condensation composition comprises a first component and a second component, wherein the first component is selected from compounds shown in a formula I, and the second component is selected from one or more of compounds shown in a formula II-1 and a formula II-2. The anti-condensation coating comprises a polymer matrix solution and an anti-condensation component dispersed in the polymer matrix solution, wherein the anti-condensation component comprises one or more than two of compounds shown in a formula I, a formula II-1 and a formula II-2. The invention prepares the high-performance anti-condensation coating which can intelligently cope with different condensation scenes (sunrise endothermic heating and sunset reflective temperature equalization) by utilizing the strong absorption or high reflection optical characteristics and the inherent high heat conduction potential of phthalocyanine and porphyrin molecules with specific structures, provides a new thought for the design of anti-condensation materials of power equipment, and has accurate and obvious protection effect.

Inventors

  • CAO JING
  • TAN CHAOYU
  • Zhao Zhuyue
  • YUAN YE
  • PENG JUN
  • WEI GUANGMING

Assignees

  • 兰州大学
  • 国网甘肃省电力公司超高压公司
  • 国网甘肃省电力公司兰州供电公司

Dates

Publication Date
20260505
Application Date
20251212

Claims (10)

  1. 1. An anti-condensation composition comprising a first component selected from the group consisting of compounds of formula I and a second component selected from one or more of the compounds of formula II-1 and formula II-2; the compound of the formula I, The compound of the formula II-1, The compound of the formula II-2, In the formula I, R 1 to R 4 are the same or different and are each independently selected from hydrogen, nitro, amino, C1-C6 alkyl, C1-C6 alkoxy or sulfonic acid groups, and R 1 to R 4 are not hydrogen at the same time; In formulas II-1 and II-2, R 5 to R 8 are the same or different and are each independently selected from C6-C15 aryl, C3-C15 heteroaryl, C1-C6 alkyl or C1-C6 alkoxy, said C6-C15 aryl and C3-C15 heteroaryl being optionally substituted by one or more substituents selected from halogen, amino, C1-C6 alkyl, C1-C6 alkoxy; M 1 and M 2 are transition metals.
  2. 2. The composition of claim 1, wherein M 1 and M 2 are the same or different and are each independently Mn, cu, ni, zn or Co, and/or In formula I, at least one of R 2 and R 3 is C1-C6 alkyl or C1-C6 alkoxy, preferably at least one of R 2 and R 3 is methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, methoxy, ethoxy, propoxy or butoxy, and/or, In formulae II-1 and II-2, R 5 to R 8 are identical or different and are each independently selected from C6-C15-aryl, C3-C15-heteroaryl, the C6-C15-aryl and C3-C15-heteroaryl being optionally substituted by one or more substituents selected from fluorine, chlorine, bromine, iodine, amino, C1-C6-alkyl, C1-C6-alkoxy, preferably R 5 to R 8 are identical or different and are each independently selected from phenyl, aminophenyl, pentafluorophenyl and pyridinyl, and/or In the formulas II-1 and II-2, each R is independently selected from hydrogen, methyl and ethyl, and/or The composition has a mass ratio of the first component to the second component of 1 (0.5-2), preferably 1 (0.8-1.2).
  3. 3. The composition according to claim 1 or 2, wherein the compound of formula I is selected from the group consisting of: , , , , , , , , , , And/or The compound of formula II-1 is selected from the group consisting of: , , , , , ; And/or the compound of formula II-2 is selected from the group consisting of: , , 。
  4. 4. An anti-condensation coating comprises a polymer matrix solution and an anti-condensation component dispersed in the polymer matrix solution, wherein the anti-condensation component comprises one or more than two of compounds shown in a formula I, a formula II-1 and a formula II-2; the compound of the formula I, The compound of the formula II-1, The compound of the formula II-2, Wherein each symbol in formula I, formula II-1, formula II-2 is as defined in any one of claims 1 to 3; preferably, the anti-condensation component comprises the anti-condensation composition according to any one of claims 1 to 3.
  5. 5. The coating according to claim 4, wherein the anti-condensation component comprises 0.1-20%, preferably 0.5-10%, more preferably 0.5-1% by mass of the polymer matrix solution, and/or The polymer matrix is selected from one or more of polyvinyl alcohol, water-based acrylic resin, glutaraldehyde crosslinking polyvinyl alcohol, preferably combination of polyvinyl alcohol and water-based acrylic resin, and/or The polyvinyl alcohol has a polymerization degree of 500-2500, preferably 1500-2500, more preferably one or more selected from PVA-0588, PVA-1088, PVA-1788, PVA-1799, PVA-1792, PVA-124, and/or The aqueous acrylic resin has a viscosity of <150 cp at 20-25 ℃ and/or a solids content of 35-60%, preferably 39-41%, and/or The solvent in the polymer matrix solution comprises water, and/or The polymer matrix solution is a mixture of a polyvinyl alcohol aqueous solution and an aqueous acrylic resin, preferably, the volume ratio of the polyvinyl alcohol aqueous solution to the aqueous acrylic resin is 1 (3-6), and preferably, the concentration of the polyvinyl alcohol aqueous solution is 1-10wt%, and more preferably, 1-5wt%.
  6. 6. An anti-condensation coating comprises a polymer matrix and an anti-condensation component dispersed in the polymer matrix, wherein the anti-condensation component comprises one or more than two of compounds shown in a formula I, a formula II-1 and a formula II-2; the compound of the formula I, The compound of the formula II-1, The compound of the formula II-2, Wherein each symbol in formula I, formula II-1, formula II-2 is as defined in any one of claims 1 to 3; preferably, the anti-condensation component comprises the anti-condensation composition according to any one of claims 1 to 3; Preferably, the mass ratio of the anti-condensation component in the coating is 0.5-20%, preferably 0.5-10%, more preferably 0.5-1%; preferably, the polymer matrix is selected from one or more of polyvinyl alcohol, aqueous acrylic resin, glutaraldehyde crosslinked polyvinyl alcohol, more preferably a combination of polyvinyl alcohol and aqueous acrylic resin; Preferably, the polymerization degree of the polyvinyl alcohol is 500-2500, more preferably 1500-2500, and further preferably, the polyvinyl alcohol is one or more selected from PVA-0588, PVA-1088, PVA-1788, PVA-1799, PVA-1792 and PVA-124; Preferably, the aqueous acrylic resin has a viscosity of <150 cp at 20-25 ℃ and/or a solids content of 35-60%, preferably 39-41%; Preferably, the coating is obtained by applying the coating according to claim 4 or 5 to the surface of a substrate.
  7. 7. A method of preparing the anti-condensation coating of claim 4 or 5 or the anti-condensation coating of claim 6, comprising one or more of the following steps: (1) Mixing the anti-condensation component with the polymer matrix solution to obtain the coating; (2) And coating the coating on the surface of the substrate to obtain the coating.
  8. 8. The method according to claim 7, wherein in step (1), the mixing is performed under an ultrasonic treatment, the power of the ultrasonic treatment is preferably 200 to 600W, the time of the ultrasonic treatment is preferably 0.5 to 2 hours, and/or, The mixing is carried out at a temperature of from-5 ℃ to 5 ℃, and/or The step (1) further comprises the step of ageing the mixed liquid, wherein the temperature of ageing is preferably 15-40 ℃, the time of ageing is preferably 20-48 hours, the ageing is preferably carried out under the stirring condition, and the rotating speed of stirring is preferably 100-500 rpm.
  9. 9. An outdoor power equipment, wherein the inner wall and/or the outer surface of a box body or a cabinet body is coated with the anti-condensation coating according to claim 4 or 5 or the anti-condensation coating according to claim 6 or the anti-condensation coating or coating prepared by the method according to claim 7 or 8; preferably, the outdoor power equipment comprises a high-voltage electric box, a switch cabinet and a ring main unit; preferably, the thickness of the anti-condensation coating is 0.05-0.5mm, more preferably 0.08-0.2mm.
  10. 10. Use of a compound of formula I, formula II-1 or formula II-2 or an anti-condensation composition according to any one of claims 1 to 3 or an anti-condensation coating according to claim 4 or 5 or an anti-condensation coating according to claim 6 or an anti-condensation coating or coating prepared by a method according to claim 7 or 8 in outdoor power equipment anti-condensation; the compound of the formula I, The compound of the formula II-1, The compound of the formula II-2, In the formula I, the formula II-1 and the formula II-2, each symbol is defined as in any one of claims 1-3; preferably, the outdoor power equipment comprises a high-voltage electric box, a switch cabinet and a ring main unit; Preferably, the paint or coating is applied to the inner and/or outer surfaces of the outdoor power equipment.

Description

Anti-condensation composition, anti-condensation coating, preparation method and application Technical Field The invention relates to the technical field of anti-condensation coating materials, in particular to an anti-condensation composition, an anti-condensation coating, a preparation method and application. Background In the running process of the outdoor power equipment box body (such as an extra-high voltage box, a switch cabinet, a ring main unit and the like), the indoor power equipment box body is influenced by the continuous heating of internal elements, the day-night temperature difference of the external environment and the change of solar radiation, and the surface temperature of the inner wall of the outdoor power equipment box body is easily lower than the dew point temperature of air in the box at specific moments (such as before and after sunrise and sunset), so that water vapor condensation, namely 'condensation', is caused. The condensation can obviously reduce the insulation strength of electrical equipment, cause partial discharge, interphase short circuit, ground fault and even large-scale power interruption, and is a intractable problem threatening the safe operation of a power grid. At present, the anti-condensation measures mainly include active energy consumption equipment such as a heater, an exhaust fan and the like, such as the installation of the heater or the exhaust fan. These methods require continuous consumption of electric energy, have problems of mechanical wear, periodic maintenance, localized noise and protection effects, etc., and are contrary to the green and intelligent development trend of the power grid. There have also been some studies attempting to use heat-insulating or hydrophobic coatings, but often fail to fundamentally solve the condensation core problem caused by temperature differences. For example, a simple hydrophobic coating can only change the wetting state of water, so that condensed water drops are easy to roll off, but the initial condensation process of water vapor cannot be fundamentally prevented, and the method belongs to a scheme for treating the symptoms and the root causes. The heat-insulating coating can block the heat of the external environment, but also can block the heat of the internal heating element from being transferred to the tank wall, so that the temperature difference between the tank wall and the internal hot air can be increased, and the formation of condensation is promoted. In the prior art, commercial phthalocyanine or porphyrin is generally used as a common pigment or filler, and is not specifically designed from the aspect of molecular structure engineering and is used as a core functional unit to construct an intelligent coating with high-efficiency heat conduction and selective radiation regulation and control capability, so that the performance potential of the intelligent coating is not fully explored, and complex and changeable field working conditions are difficult to deal with. Therefore, there is an urgent need to develop a novel passive coating material and technology capable of intelligently controlling a tank wall temperature field without external energy and fundamentally eliminating condensation conditions. Disclosure of Invention In order to overcome the defects in the prior art, the anti-condensation coating is prepared by taking a series of phthalocyanine and porphyrin compounds with specific structures as core functional materials, so that the surface temperature field of the box body of the power equipment can be passively and intelligently regulated, and the condensation condition is fundamentally eliminated. By introducing specific substituent groups and central metal on the molecular level of phthalocyanine and porphyrin, the precise regulation and control of molecular energy level, light absorption range and intermolecular stacking behavior are realized, so that the self-adaptive anti-condensation capability of the coating scene is provided. Aiming at the moment that the sunrise and the sunset are the most prone to condensation, a double condensation prevention mechanism of active heat absorption-balanced heat conduction is realized through material selection, and the two core condensation scenes of internal heat and external cooling during sunrise and positive heat and negative cold during sunset are purposefully solved. In order to achieve the above purpose, the invention adopts the following technical scheme: In a first aspect, the present invention provides an anti-condensation composition comprising a first component selected from the group consisting of the compounds of formula I and a second component selected from one or more of the compounds of formula II-1 and formula II-2; In the formula I, R 1 to R 4 are the same or different and are each independently selected from hydrogen, nitro, amino, C1-C6 alkyl, C1-C6 alkoxy or sulfonic acid groups, and R 1 to R 4 are not hydrogen at the same tim