Coating process for thermal insulation coating of marine container type mobile power supply box body

Abstract

The invention discloses a coating process for a thermal insulation coating of a container type mobile power supply box for a ship, which sequentially comprises the following steps of: treating a base surface before spraying, spraying epoxy zinc-rich refrigeration primer, spraying radiation refrigeration finish paint and spraying self-cleaning colored epoxy finish paint, the heat insulation coating sequentially comprises a refrigeration primer layer, a radiation refrigeration paint layer and a color epoxy finish paint layer from bottom to top; through the coating of the invention, the heat dissipation capability of the surface is improved due to the high reflection performance of the material, the heat insulation effect of the surface of the container type mobile power supply for the ship is realized, and internal equipment is ensured to work within a safe temperature range. Heat on the surface of the box-type power supply container is efficiently transmitted to the outer space low-temperature background in an infrared radiation mode through the atmospheric transmission window, the passive heat insulation effect of the container-type mobile power supply box body is achieved, the box body heat insulation coating technology does not need extra energy consumption, and the zero-energy-consumption characteristic is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control for marine containerized power supplies, and particularly to a painting process for the heat insulation coating of the casing of a marine containerized mobile power supply. Background Art

[0002] With the continuous enhancement of the awareness of energy conservation and environmental protection globally, the improvement of the performance of marine power systems has become particularly important. Marine containerized mobile power supplies are widely used in ship power supply due to their portability and flexibility, especially in the case of ocean voyages and temporary dockings, which greatly facilitates the rapid configuration and use of electricity.

[0003] However, in the actual operation process, these containerized mobile power supplies face a series of severe environmental challenges. For example, factors such as high external air temperature, strong sunlight irradiation, and high seawater temperature cause the temperature inside the container to rise rapidly. This excessive temperature not only directly affects the operating performance and reliability of the power equipment but may also lead to equipment overload, failure, and even potential safety hazards, thus posing a threat to navigation safety.

[0004] In addition to the high-temperature environment, marine containerized mobile power supplies are exposed to high salinity and high humidity conditions in the marine environment for a long time, and the surface of the casing is prone to corrosion and rust. This corrosion problem will lead to a decrease in the structural strength of the container, shorten its service life, increase the maintenance cost and replacement frequency of the equipment. Moreover, corrosion may also affect the normal operation of the internal electrical equipment, thereby threatening the safety of the entire power system.

[0005] Therefore, it is particularly important to find an effective environmentally friendly and energy-saving material to reduce the surface temperature and internal temperature of the equipment during normal operation. At the same time, improving the corrosion resistance of the equipment to ensure its long-term stable operation is the key rectification measure to improve the performance and reliability of the equipment. Summary of the Invention

[0006] Aiming at the above deficiencies in the prior art, the purpose of the present invention is to provide a painting process for the heat insulation coating of the casing of a marine containerized mobile power supply to solve the problems that the existing marine containerized mobile power supply has a rapid increase in the internal temperature of the container and the surface of the casing is prone to corrosion and rust due to factors such as high external air temperature, strong sunlight irradiation, and high salinity and high humidity.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a painting process for the heat insulation coating of the casing of a marine containerized mobile power supply, including the following steps: S1, base surface treatment before spraying: improve the adhesion of the thermal insulation coating of the box by degreasing and decontaminating the box surface and sanding it. After cleaning, the box of the marine container mobile power supply should not be exposed to rain for 12 hours before painting to ensure that the surface of the box is dry. It should not be exposed to rain within 24 hours after painting to ensure that the surface material of the box is not damaged; S2, spraying of refrigeration primer layer: ensure that the relative humidity of the working environment is not more than 85% during the implementation process. For outdoor construction, weather factors must be considered. It is strictly forbidden to apply thermal insulation materials when it is windy and rainy. Use electrostatic spraying to continuously and evenly spray heavy anti-corrosion epoxy zinc-rich refrigeration primer at an ambient temperature of 10-35°C to obtain a refrigeration primer layer; S3, spraying of radiation cooling paint layer: after the cooling primer is dried, electrostatic spraying is used to spray 150-200 μm of radiation cooling topcoat on the cooling primer layer to obtain a radiation cooling paint layer; S4, spraying of colored epoxy topcoat: using electrostatic spraying, spray a heavy anti-corrosion colored epoxy topcoat with a thickness of 60 to 80 μm on the radiation cooling paint layer to obtain a 400 μm thermal insulation coating consisting of a cooling primer layer, a radiation cooling paint layer and a colored epoxy topcoat layer from bottom to top.

[0008] Furthermore, the refrigeration primer is sprayed multiple times, each time with a thickness of 70 to 90 μm, and baked at 180 to 200° C. for 40 to 60 seconds after spraying.

[0009] Furthermore, after spraying once, wait for 10 minutes and wait until the surface temperature drops to 80℃ before starting the next spraying.

[0010] Furthermore, the radiation cooling topcoat is sprayed multiple times, each time with a thickness of 70 to 90 μm, and baked at 180 to 200° C. after spraying.

[0011] Furthermore, the epoxy topcoat is baked at 180-200° C. for 40-60 seconds after spraying.

[0012] Furthermore, after the refrigeration primer layer is sprayed, the radiation refrigeration topcoat is sprayed after an interval of 24 hours.

[0013] Furthermore, the colored epoxy topcoat must be sprayed after the refrigeration primer is completely dried. After the above process steps, the marine container-type mobile power supply has better heat insulation and self-cleaning functions.

[0014] The beneficial effects of the present invention are as follows: the container-type mobile power box for ships using the process of the present invention repels water and oil at the same time. This characteristic makes the surface of the material not easily contaminated, and the surface has excellent aging resistance, and can reduce the surface temperature to below the ambient temperature. The internal temperature can be reduced by 5 to 10°C when the ambient temperature is low in the morning and evening, and by more than 20°C when the temperature is highest at noon. The average daily temperature reduction is 10 to 15°C, which effectively improves the performance and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of energy transfer of the thermal insulation coating of the present invention; Figure 2 Schematic diagram of wavelength reflection of the heat-insulating coating of the present invention; Figure 3 This is the installation diagram of the box-type power supply temperature probe; Figure 4 This is the daily temperature curve of the container temperature probe on August 6, 2024; Figure 5 This is the daily temperature curve of the container temperature probe on August 7, 2024. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] The invention discloses a coating process for a thermal insulation coating of a container-type mobile power supply box for a ship, which is used for coating a thermal insulation coating composed of two coats of primer and one coat of topcoat, and comprises the following steps.

[0018] S1, Preparation before spraying: base surface treatment.

[0019] The adhesion of the thermal insulation coating of the box is improved by degreasing, decontaminating and sanding the surface of the box. After cleaning, the ship container mobile power box is not exposed to rain for 12 hours before painting to ensure that the surface of the box is dry. It cannot be exposed to rain within 24 hours after painting to ensure that the surface material of the box is not damaged.

[0020] S2, spraying the refrigeration primer layer after the cabinet is processed.

[0021] Ensure that the relative humidity of the working environment is no more than 85% during the implementation process. For outdoor construction, weather factors must be considered. It is strictly forbidden to implement thermal insulation material coating when it is windy and rainy. Use electrostatic spraying to continuously and evenly spray heavy anti-corrosion epoxy zinc-rich refrigeration primer in an ambient temperature range of 10-35°C to obtain a refrigeration primer layer with a thickness of about 100μm.

[0022] The refrigeration primer is sprayed multiple times, with a thickness of 70-90μm for each spray. After spraying, the baking temperature is 180-200℃ for 40-60s. The re-coating time is 10min, and the next spraying is started when the surface temperature drops to 80℃.

[0023] S3, spraying of radiation cooling paint layer.

[0024] The second spraying can be carried out only after the refrigeration primer to be sprayed is completely dry: electrostatic spraying is used to spray a radiation refrigeration topcoat with a thickness of 150 to 200 μm on the refrigeration primer layer to obtain a radiation refrigeration paint layer.

[0025] After the refrigeration primer layer is sprayed, the radiation refrigeration topcoat is sprayed after an interval of 24 hours. That is, the interval between the radiation refrigeration topcoat and the last layer of refrigeration primer spraying is greater than 24 hours. The radiation refrigeration topcoat is sprayed multiple times, and the thickness of each spray is 70-90μm. After spraying, it is baked at a baking temperature of 180-200℃. After spraying the refrigeration epoxy topcoat, the baking time is 40-60s at a baking temperature of 180-200℃.

[0026] S4, spraying of colored epoxy topcoat.

[0027] The colored epoxy topcoat is applied after the refrigeration primer is completely dried. Electrostatic spraying is used to spray a heavy anti-corrosion colored epoxy topcoat with a thickness of 60 to 80 μm on the radiation refrigeration paint layer to obtain a 400 μm thermal insulation coating consisting of a refrigeration primer layer, a radiation refrigeration paint layer, and a colored epoxy topcoat layer from bottom to top. The refrigeration primer layer and the radiation refrigeration paint layer are selected according to the actual application scenario. After the above process steps, the marine container mobile power supply has good thermal insulation and self-cleaning functions.

[0028] like Figure 1 , Figure 2 As shown, the thermal insulation coating mainly utilizes the transmission band window in the earth's atmosphere, and the infrared radiation in this band area is relatively transparent. Through this transmission window, the heat of the ship container mobile power supply can be efficiently transferred to outer space in the form of infrared radiation. In order to improve the thermal insulation effect of the ship container mobile power supply box, the box thermal insulation coating has a high reflectivity, thereby reducing the total amount of heat that needs to be radiated to outer space. The ship container mobile power supply box with thermal insulation coating repels water and oil at the same time. This feature makes the surface of the material not easily contaminated. The surface of the ship container mobile power supply box with this thermal insulation coating has excellent aging resistance.

[0029] When the marine box-type power supply adopts the heat-insulating coating of the present invention, the heat emitted by the surface of the container-type mobile power supply box in the form of infrared radiation is greater than the heat absorbed, so the surface of the box-type power supply box has a heat-insulating effect under direct sunlight and high external temperature. The self-cleaning cover color epoxy topcoat layer is used on the basis of the refrigeration primer layer and the radiation refrigeration paint coating to make the container-type mobile power supply box have excellent hydrophobic, oleophobic and stain-resistant properties. After adopting the box body heat-insulating coating, the container-type mobile power supply has good heat-insulating and self-cleaning capabilities.

[0030] The container-type mobile power supply modified with the box insulation coating described in this patent can reduce the surface temperature to below the ambient temperature. The internal temperature can be reduced by 5 to 10°C when the ambient temperature is lower in the morning and evening, and by more than 20°C when the temperature is highest at noon. The average daily temperature reduction is 10 to 15°C, which effectively improves the performance and safety of the equipment.

[0031] It is very necessary to build an environmental condition simulation test device. By spraying self-cleaning radiation cooling paint and combining it with proofing experiments, the external and internal cooling effects of the material under different environmental conditions can be effectively verified. At the same time, evaluating the hydrophobicity and self-cleaning properties of the material will provide scientific basis and data support for further improving the use environment of the equipment. Verifying the effectiveness of these improvement measures will provide valuable experience and profound insights for the design and application of future containerized mobile power supplies, and become a top priority for improving the overall performance and safety of ship power systems.

[0032] The coating obtained by the process of the present invention does not need a refrigerant as a heat transfer medium or electric energy to drive. Even at noon when the sun is directly shining, passive radiation cooling can be achieved in which the surface temperature of the coating is lower than the ambient temperature, and the temperature of the coated substrate can be kept lower than the ambient temperature all day long. The contact angle between the coating surface and aqueous and oily droplets is not less than 150°, and the rolling angle is less than 10°. It has excellent super-amphiphobic self-cleaning performance and resists contamination by all pollutants.

[0033] The heat emitted by the surface of the container mobile power box in the form of infrared radiation is greater than the heat absorbed, so the surface of the box power box has a heat insulation effect under direct sunlight and high external temperature. The self-cleaning cover is used on the basis of the heat insulation coating to make the container mobile power box have excellent hydrophobic, oleophobic and stain-resistant properties. After using the box heat insulation coating, the container mobile power has good heat insulation and self-cleaning capabilities. The box coating has self-cleaning properties, making it difficult for water droplets to stay and accumulate on the surface of the container mobile power box. The box has good self-cleaning ability to prevent pollutants from attaching, and the maintenance cost and cleaning frequency of the box are significantly reduced.

[0034] The effectiveness of the thermal insulation coating of the box needs to be verified by the temperature probe. The installation method of the temperature probe inside and outside the ship container mobile power box is as follows: Probe No. 1 is installed 20CM above the top of the box to monitor the ambient temperature in real time; Probe No. 2 is installed at the inner top in the middle of the box to monitor the surface temperature of the box; Probe No. 3 is installed in the middle of the inside 50cm from the top to monitor the internal temperature; Probe No. 4 is installed at the front door of the car cabinet to monitor local high temperature changes. The installation method is as follows: Figure 3 The daily temperature curve of the container collected by the temperature probe, the data of two days are selected as follows Figure 4 , Figure 5 shown.

[0035] The coating obtained by the process of the present invention has extremely excellent aging resistance, which is specifically manifested in the following aspects.

[0036] 1. Reduce the external temperature of the container: By applying self-cleaning radiation cooling paint, the high reflectivity of the material itself is used to increase the heat dissipation capacity of the surface, thereby reducing the surface temperature of the container. The surface temperature is kept stable and lower than the ambient temperature for a long time.

[0037] 2. Optimize the internal environment temperature: Increase the heat dissipation capacity by lowering the external temperature. Ensure that the internal equipment works within a safe temperature range. Achieve an internal temperature that is 4 to 10°C lower than the internal temperature of a container under the same operating conditions.

[0038] In order to improve the thermal insulation effect of the ship container mobile power box, the box thermal insulation coating has a high reflectivity, thereby reducing the total amount of heat that needs to be radiated to outer space.

[0039] 3. Maintain hydrophobic and oleophobic properties: The coating must have good self-cleaning ability to prevent the adhesion of pollutants and extend the maintenance cycle.

[0040] 4. Improve equipment safety and reliability: reduce the risk of equipment failure caused by temperature fluctuations and ensure stable power supply in sea areas and harsh environments.

[0041] Obviously, the above description is not a limitation of the present invention. Changes in resistance and capacitance values ​​and changes in the selection of key components made by technicians in this technical field without changing the circuit scheme should also fall within the protection scope of the present invention.

Claims

1. A coating process for a thermal insulation coating of a containerized mobile power source for a ship, characterized in that: The following steps are included S1, degrease and clean the surface of the box and polish it with sandpaper in turn. After cleaning, ensure that the surface of the box is dry; S2, electrostatically spraying heavy anti-corrosion epoxy zinc-rich refrigeration primer at a relative humidity of no more than 85% and an ambient temperature of 10 to 35°C to obtain a refrigeration primer layer; S3, after the refrigeration primer is dried, a 150-200 μm thick radiation refrigeration topcoat is sprayed on the refrigeration primer layer by electrostatic spraying to obtain a radiation refrigeration paint layer; S4, using electrostatic spraying, spraying 60-80μm colored epoxy topcoat on the radiation cooling paint layer to obtain a thermal insulation coating consisting of a cooling primer layer, a radiation cooling paint layer and a colored epoxy topcoat layer from bottom to top.

2. The coating process of the thermal insulation coating of a container-type mobile power source for a ship according to claim 1 is characterized in that: The refrigeration primer is sprayed multiple times, each time with a thickness of 70 to 90 μm, and is baked at 180 to 200° C. for 40 to 60 seconds after spraying.

3. The coating process of the thermal insulation coating of the container-type mobile power supply box for ships according to claim 1 is characterized in that: After spraying once, wait for 10 minutes and wait until the surface temperature drops to 80℃ before starting the next spraying.

4. A coating process for a thermal insulation coating of a container-type mobile power source for a ship according to claim 1, 2 or 3, characterized in that: The radiation cooling topcoat is sprayed multiple times, each time with a spraying thickness of 70-90 μm, and is baked at 180-200° C. after spraying.

5. The coating process of the thermal insulation coating of the container-type mobile power supply box for ships according to claim 4 is characterized in that: The epoxy topcoat is baked at 180-200° C. for 40-60 seconds after spraying.

6. The coating process of the thermal insulation coating of the container-type mobile power supply box for ships according to claim 5 is characterized in that: After the refrigeration primer layer is sprayed, the radiation refrigeration topcoat is sprayed after an interval of 24 hours.

7. The coating process of the thermal insulation coating of the container-type mobile power supply box for ships according to claim 6 is characterized in that: The colored epoxy topcoat is sprayed after the refrigeration primer is completely dried.

Images