Anti-condensation hydrophobic material as well as preparation method and application thereof

Abstract

The invention provides an anti-condensation hydrophobic material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing boric acid and urea, uniformly grinding, placing in a high-temperature tubular furnace, introducing first inert gas for calcining, after calcining, sequentially washing with a hydrochloric acid solution, washing with deionized water, drying, and dispersing in an absolute ethyl alcohol solution to obtain a first intermediate product; adding a silane coupling agent into the first intermediate product, and after the reaction is completed, filtering, washing with deionized water and drying in sequence to obtain a second intermediate product; dissolving the second intermediate product and polyhedral oligomeric silsesquioxane in an absolute ethyl alcohol solution, reacting in a second inert gas atmosphere, and after the reaction is completed, sequentially filtering and drying to obtain a third intermediate product; uniformly mixing the third intermediate product with resin and a curing agent to obtain a target product, and the anti-condensation hydrophobic material has excellent hydrophobicity, flame retardance, corrosion resistance, salt mist resistance and impact resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and particularly relates to an anti-condensation hydrophobic material, a preparation method thereof, and an application thereof. Background Art

[0002] The polar regions are rich in fishery resources, mineral resources, and non-renewable energy sources such as oil and natural gas. At the same time, they have significant potential in the development of renewable energy sources such as wind energy and geothermal energy. However, the extremely harsh natural environment in the polar regions, including perennial low temperatures, thick ice cover and other conditions, greatly restricts the process of resource development and utilization. In recent years, with the breakthrough of polar equipment technology and the gradual opening of the Arctic shipping lanes, polar energy exploration activities have gradually increased. As a key transportation and operation platform, the operational safety and functional requirements of polar ships have become increasingly prominent.

[0003] When operating under extreme climate conditions, polar ships face many technical challenges. Harsh meteorological conditions such as low temperatures, strong winds, and freezing rain in the polar regions not only threaten the structural safety of ships, but also pose significant risks to the lives of crew members, and may even cause huge economic losses due to accidents. To ensure the long-term safe operation of polar ships, the cabin cold protection system needs to meet extremely high construction standards. However, due to the significant temperature difference between the inside and outside of the polar ship cabins (usually reaching dozens of degrees Celsius), and the insufficient flatness of the cabin insulation material laying, the temperature of the cabin inner wall in contact with the outside is much lower than the dew point temperature of the cabin air, thus causing condensation.

[0004] The formation of condensation causes multiple harms to the ship cabins: liquid water seeps into the interior of the insulation material, damaging the material structure, resulting in a significant decline in the heat insulation performance, forcing a significant increase in the energy consumption of the cabin ventilation and heating systems; metal components and electronic equipment are in a humid environment for a long time, which easily causes problems such as rust and short circuits, reducing the service life of the equipment; the humidity in the cabin increases, and the walls are wet and moldy, seriously affecting the comfort of the crew's living and working environment, and even posing a potential threat to human health.

[0005] To address the above problems, the hydrophobic coating technology provides an effective solution. Currently, hydrophobic coatings have been widely used in many fields. For example, in the construction field, hydrophobic coatings are used on the outer surface of buildings to prevent rainwater penetration and stain attachment; in the automotive field, hydrophobic coatings are applied to key components such as engines and braking systems to improve corrosion resistance; in the aerospace field, hydrophobic coatings are used on key parts such as aircraft wings to reduce the risk of icing and flight resistance. In the field of polar ships, hydrophobic coatings have also been used on external structures such as open decks to reduce ice and water deposition.

[0006] However, the research on special hydrophobic coatings for the special environment inside ship cabins (such as high humidity, low temperature, complex mechanical vibrations, etc.) is still insufficient, and the existing technologies have the following limitations: Most existing hydrophobic coatings are designed for normal temperature or specific working conditions and are difficult to maintain long-term stable hydrophobic performance under the large temperature difference and high humidity conditions in polar cabins; Some hydrophobic coatings only focus on single functions such as anti-icing or waterproofing and lack comprehensive inhibition of the dynamic condensation formation process (such as the influence of temperature changes and air flow); The structure of ship cabins is complex, and the construction processes of traditional hydrophobic coatings are difficult to meet their strict requirements for coating adhesion, durability, and safety. Summary of the Invention

[0007] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide an anti-condensation hydrophobic material, its preparation method and application, which are used to solve the problems in the prior art that condensation adheres to ship cabins, corrodes insulating materials, reduces the service life of insulating materials, and reduces the habitability of cabins.

[0008] To achieve the above object and other related objects, in the first aspect, the present invention provides a preparation method of an anti-condensation hydrophobic material, including the following steps:

[0009] Mix boric acid and urea, grind them evenly, place them in a high-temperature tube furnace, introduce a first inert gas for calcination. After the calcination is completed, wash with hydrochloric acid solution, deionized water in sequence, dry, and then disperse in an anhydrous ethanol solution to obtain a first intermediate product;

[0010] Add a silane coupling agent to the first intermediate product. After the reaction is completed, filter, wash with deionized water, and dry in sequence to obtain a second intermediate product;

[0011] Dissolve the second intermediate product and cage-shaped polyhedral oligomeric silsesquioxane (POSS) in an anhydrous ethanol solution, react in a second inert gas atmosphere. After the reaction is completed, filter and dry in sequence to obtain a third intermediate product;

[0012] Mix the third intermediate product, resin, and curing agent evenly to obtain the target product.

[0013] Specifically, the preparation method includes the following steps:

[0014] Mix boric acid and urea, grind them evenly, place them in a high-temperature tube furnace, heat up to 1200 °C to 1600 °C, introduce a first inert gas with a flow rate of 100 mL / min to 150 mL / min for calcination. After the calcination is completed, wash the product with 5% to 20% hydrochloric acid solution, finally remove the hydrochloric acid solution, wash again with deionized water, place the washed sample in an oven at 60 °C to 100 °C for drying, and after drying, disperse it in an anhydrous ethanol solution and stir evenly to obtain a first intermediate product;

[0015] Mix the silane coupling agent with the first intermediate product, heat it to 60°C to 80°C, stir for 6 h to 10 h, then filter, wash with deionized water, and finally place it in a vacuum drying oven at 60°C to 80°C for drying for 10 h to 12 h to obtain the second intermediate product;

[0016] Dissolve the second intermediate product and POSS in an anhydrous ethanol solution, heat and stir in a second inert gas atmosphere with a flow rate of 10 mL / min to 30 mL / min for 18 h to 24 h, filter and then place it in a vacuum drying oven at 60°C to 80°C for drying for 10 h to 12 h to obtain the third intermediate product;

[0017] Mix the third intermediate product, resin and curing agent, and stir evenly to obtain the target product.

[0018] Optionally, the mass ratio of boric acid to urea is 0.9:1;

[0019] The mass ratio of the silane coupling agent to the first intermediate product is 1:(10 - 15);

[0020] The mass ratio of the second intermediate product to the cage-shaped polyhedral oligomeric silsesquioxane is 1:(2.5 - 5);

[0021] The mass ratio of the third intermediate product, resin and curing agent is (5 - 30):(65 - 94):(1 - 5).

[0022] Optionally, the silane coupling agent is selected from γ-aminopropyltriethoxysilane (KH-550) and / or γ-glycidoxypropyltrimethoxysilane (KH-560).

[0023] Optionally, the cage-shaped polyhedral oligomeric silsesquioxane is selected from one or more of octaaminophenyl cage-shaped polyhedral oligomeric silsesquioxane, vinylated cage-shaped polyhedral oligomeric silsesquioxane, and epoxycyclohexyl cage-shaped polyhedral oligomeric silsesquioxane.

[0024] Optionally, the resin is selected from epoxy resin and / or vinyl resin.

[0025] Optionally, the curing agent is selected from methyl ethyl ketone peroxide and / or acetylacetone peroxide.

[0026] Optionally, the first inert gas is selected from nitrogen and / or argon, and the flow rate of the first inert gas is 100 mL / min to 150 mL / min;

[0027] The second inert gas is selected from nitrogen and / or argon, and the flow rate of the second inert gas is 10 mL / min to 30 mL / min.

[0028] Optionally, the temperature in the high-temperature tubular furnace is 1200°C to 1600°C;

[0029] The reaction temperature of the silane coupling agent and the first intermediate product is 60°C to 80°C.

[0030] In a second aspect, the present invention provides an anti-condensation hydrophobic material prepared by the above-mentioned preparation method of the anti-condensation hydrophobic material.

[0031] In a third aspect, the present application also provides an anti-condensation hydrophobic material prepared by the above-mentioned preparation method of the anti-condensation hydrophobic material, or the application of the above-mentioned anti-condensation hydrophobic material in a ship cabin.

[0032] As described above, an anti-condensation hydrophobic material, its preparation method and application of the present application have the following beneficial effects:

[0033] The preparation method of the anti-condensation hydrophobic material provided by the present application prepares boron nitride rich in edge defects by pyrolysis, making its surface more easily alkoxylated. After alkoxylation, it combines with cage-shaped polyhedral oligomeric silsesquioxane and resin, enabling the prepared anti-condensation hydrophobic material to achieve a hydrophobic effect; the cage-shaped polyhedral oligomeric silsesquioxane provides excellent mechanical properties such as adhesion, impact resistance, and wear resistance for the anti-condensation hydrophobic material, while ensuring that the anti-condensation hydrophobic material has good flame retardant properties.

[0034] The anti-condensation hydrophobic material provided by the present application has the advantages of hydrophobicity, flame retardancy, corrosion resistance, salt spray resistance, impact resistance, etc., and is suitable for harsh marine environments. When applied in a ship cabin, it can extend the service life of the insulation material in the cabin. Description of the Drawings

[0035] Figure 1 It is a scanning electron microscope (SEM) image of the anti-condensation hydrophobic material prepared in the embodiment of the present application. Detailed Embodiments

[0036] The following further elaborates the present application in combination with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the protection scope of the present application.

[0037] The following illustrates the implementation manners of the present application through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0038] Unless otherwise specified, the raw materials, solvents, and reagents in the embodiments of the present application are all purchased through commercial channels.

[0039] Example 1

[0040] This example provides a preparation method of an anti-condensation hydrophobic material, including the following steps:

[0041] (1) Mix boric acid and urea with a mass ratio of 0.9:1, grind them evenly, place them in a high-temperature tube furnace, heat up to 1400 °C, introduce nitrogen at 150 mL / min for calcination. After the calcination is completed, wash the obtained product successively with 10% hydrochloric acid solution, remove the hydrochloric acid solution, wash again with deionized water, place it in an oven at 80 °C for drying, and after drying, disperse it in anhydrous ethanol solution and stir evenly to obtain a first intermediate product;

[0042] (2) Mix the silane coupling agent KH-560 with the first intermediate product at a mass ratio of 1:15, heat to 60 °C, stir for 10 h, filter successively, wash with deionized water, and place it in a vacuum drying oven at 80 °C for drying for 12 h to obtain a second intermediate product;

[0043] (3) Dissolve the second intermediate product and octaaminophenylcage polyhedral oligomeric silsesquioxane (octaaminophenyl POSS) at a mass ratio of 1:3 in anhydrous ethanol solution, heat and stir in a nitrogen atmosphere of 30 mL / min for 18 h, filter successively, and place it in a vacuum drying oven at 80 °C for drying for 12 h to obtain a third intermediate product;

[0044] (4) Stir and mix the third intermediate product, epoxy resin, and methyl ethyl ketone peroxide evenly at a mass ratio of 25:73:2 to obtain an anti-condensation hydrophobic material.

[0045] The contact angle of the anti-condensation hydrophobic material prepared in this example was measured by a contact angle measuring instrument to be 154.5°.

[0046] Example 2

[0047] This example provides a preparation method of an anti-condensation hydrophobic material, including the following steps:

[0048] (1) Mix boric acid and urea with a mass ratio of 0.9:1, grind them evenly, place them in a high-temperature tube furnace, heat up to 1200 °C, introduce nitrogen at 150 mL / min for calcination. After the calcination is completed, wash the obtained product successively with 10% hydrochloric acid solution, remove the hydrochloric acid solution, wash again with deionized water, place it in an oven at 80 °C for drying, and after drying, disperse it in anhydrous ethanol solution and stir evenly to obtain a first intermediate product;

[0049] (2) Mix the silane coupling agent KH-560 with the first intermediate product at a mass ratio of 1:12, heat to 80 °C, stir for 12 h, filter successively, wash with deionized water, and place it in a vacuum drying oven at 80 °C for drying for 12 h to obtain a second intermediate product;

[0050] (3) Dissolve the second intermediate product with a mass ratio of 1:5 and vinylated polyhedral oligomeric silsesquioxane (vinylated POSS) in an anhydrous ethanol solution, heat and stir in a nitrogen atmosphere of 15 mL / min for 18 h, successively filter, place in a vacuum drying oven at 80 °C and dry for 12 h to obtain the third intermediate product;

[0051] (4) Stir and mix the third intermediate product, vinyl resin, and methyl ethyl ketone peroxide with a mass ratio of 15:80:5 evenly to obtain the anti-condensation hydrophobic material.

[0052] The contact angle of the anti-condensation hydrophobic material prepared in this example was measured by a contact angle measuring instrument to be 152.1°.

[0053] Example 3

[0054] This example provides a preparation method of an anti-condensation hydrophobic material, including the following steps:

[0055] (1) Mix boric acid and urea with a mass ratio of 0.9:1, grind evenly, place in a high-temperature tubular furnace, heat to 1500 °C, introduce nitrogen at 150 mL / min for calcination. After the calcination is completed, wash the obtained product successively with a 15% hydrochloric acid solution, remove the hydrochloric acid solution, wash again with deionized water, place in an oven at 80 °C for drying, and after drying, disperse it in an anhydrous ethanol solution and stir evenly to obtain the first intermediate product;

[0056] (2) Mix the silane coupling agent KH-560 with a mass ratio of 1:15 and the first intermediate product, heat to 60 °C, stir for 10 h, successively filter, wash with deionized water, place in a vacuum drying oven at 80 °C and dry for 12 h to obtain the second intermediate product;

[0057] (3) Dissolve the second intermediate product with a mass ratio of 1:4 and octaaminophenyl polyhedral oligomeric silsesquioxane (octaaminophenyl POSS) in an anhydrous ethanol solution, heat and stir in a nitrogen atmosphere of 30 mL / min for 24 h, successively filter, place in a vacuum drying oven at 80 °C and dry for 12 h to obtain the third intermediate product;

[0058] (4) Stir and mix the third intermediate product, epoxy resin, and methyl ethyl ketone peroxide with a mass ratio of 20:75:5 evenly to obtain the anti-condensation hydrophobic material.

[0059] The contact angle of the anti-condensation hydrophobic material prepared in this example was measured by a contact angle measuring instrument to be 155.3°.

[0060] Example 4

[0061] This example provides a preparation method of an anti-condensation hydrophobic material, including the following steps:

[0062] (1) Mix boric acid and urea with a mass ratio of 0.9:1, grind them evenly, place them in a high-temperature tube furnace, heat up to 1300 °C, introduce nitrogen at 100 mL / min for calcination. After the calcination is completed, wash the obtained product successively with 10% hydrochloric acid solution, remove the hydrochloric acid solution, wash it again with deionized water, place it in an oven at 80 °C for drying, and after drying, disperse it in an anhydrous ethanol solution and stir evenly to obtain the first intermediate product;

[0063] (2) Mix the silane coupling agent KH-560 and the first intermediate product with a mass ratio of 1:10, heat to 80 °C, stir for 8 h, filter successively, wash with deionized water, and place it in a vacuum drying oven at 60 °C for drying for 12 h to obtain the second intermediate product;

[0064] (3) Dissolve the second intermediate product and epoxycyclohexyl polyhedral oligomeric silsesquioxane (epoxycyclohexyl POSS) with a mass ratio of 1:2.5 in an anhydrous ethanol solution, heat and stir in a nitrogen atmosphere at 30 mL / min for 20 h, filter successively, and place it in a vacuum drying oven at 60 °C for drying for 12 h to obtain the third intermediate product;

[0065] (4) Stir and mix evenly the third intermediate product, epoxy resin, and methyl ethyl ketone peroxide with a mass ratio of 8:87:5 to obtain the anti-condensation hydrophobic material.

[0066] The contact angle of the anti-condensation hydrophobic material prepared in this example was measured by a contact angle measuring instrument to be 151.2°.

[0067] From the contact angles obtained in Examples 1 to 4, it can be seen that the anti-condensation hydrophobic materials prepared in Examples 1 to 4 all have excellent hydrophobic properties.

[0068] The anti-condensation hydrophobic materials prepared in Examples 1 to 4 were scanned under a scanning electron microscope, and the results are as Figure 1 shown. The anti-condensation hydrophobic materials prepared in Examples 1 to 4 are POSS-modified boron nitride hydrophobic materials. In step (1) of the above example, boron nitride rich in edge defects (i.e., the first intermediate product) is prepared by pyrolysis, making its surface more easily alkoxylated; in step (2), an alkoxylation reaction is carried out to introduce an organosiloxane chain on the surface of boron nitride to achieve chemical activity and interfacial modification; in step (3), a functionalized grafting reaction is carried out. By using the ring-opening of epoxy groups and the condensation of siloxanes, POSS is grafted onto the surface of hexane-oxidized boron nitride, endowing the material with multifunctional characteristics, such as providing excellent mechanical properties such as adhesion, impact resistance, and wear resistance, as well as flame retardant properties; in step (4), it is combined with epoxy resin to achieve a hydrophobic effect.

[0069] Example 5

[0070] This embodiment provides an application of an anti-condensation hydrophobic material in a ship's cabin. Specifically, a coating is formed in the ship's cabin to achieve the properties of hydrophobicity, flame retardancy, corrosion resistance, salt spray resistance, and impact resistance.

[0071] The anti-condensation hydrophobic material of the above embodiment is applicable to a harsh marine environment and can extend the service life of the insulation material in the cabin.

[0072] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for preparing an anti-condensation hydrophobic material, characterized in that: The following steps are involved: The boric acid and urea are mixed, ground evenly, placed in a high-temperature tube furnace, and introduced with a first inert gas for calcination. After the calcination, the mixture is washed with a hydrochloric acid solution, washed with deionized water, dried, and dispersed in an anhydrous ethanol solution to obtain a first intermediate product. Adding a silane coupling agent to the first intermediate product, and after the reaction is completed, filtering, washing with deionized water, and drying in sequence to obtain a second intermediate product; The second intermediate product and cage-shaped polysilsesquioxane are dissolved in an anhydrous ethanol solution, reacted in a second inert gas atmosphere, and after the reaction is completed, filtered and dried in sequence to obtain a third intermediate product; The third intermediate product is mixed evenly with resin and curing agent to obtain the target product.

2. The preparation method according to claim 1, characterized in that: The mass ratio of boric acid to urea is 0.9:1; The mass ratio of the silane coupling agent to the first intermediate product is 1:(10-15); The mass ratio of the second intermediate product to the cage-shaped polysilsesquioxane is 1:(2.5-5); The mass ratio of the third intermediate product, the resin, and the curing agent is (5-30):(65-94):(1-5).

3. The preparation method according to claim 1 or 2, characterized in that: The silane coupling agent is selected from γ-aminopropyltriethoxysilane and / or γ-glycidyloxypropyltrimethoxysilane.

4. The preparation method according to claim 1 or 2, characterized in that: The cage-shaped polysilsesquioxane is selected from one or more of octaaminophenyl cage-shaped polysilsesquioxane, vinyl cage-shaped polysilsesquioxane, and epoxycyclohexyl cage-shaped polysilsesquioxane.

5. The preparation method according to claim 1 or 2, characterized in that: The resin is selected from epoxy resins and / or vinyl resins.

6. The preparation method according to claim 1 or 2, characterized in that: The curing agent is selected from methyl ethyl ketone oxide and / or acetylacetone peroxide.

7. The preparation method according to claim 1 or 2, characterized in that: The first inert gas is selected from nitrogen and / or argon, and the flow rate of the first inert gas is 100 mL / min to 150 mL / min; The second inert gas is selected from nitrogen and / or argon, and the flow rate of the second inert gas is 10 mL / min to 30 mL / min.

8. The preparation method according to claim 1 or 2, characterized in that: The temperature in the high-temperature tube furnace is 1200℃~1600℃; The reaction temperature of the silane coupling agent and the first intermediate product is 60°C to 80°C.

9. An anti-condensation hydrophobic material, characterized in that: The anti-condensation hydrophobic material is prepared by the preparation method of the anti-condensation hydrophobic material according to any one of claims 1 to 8.

10. Use of the anti-condensation hydrophobic material prepared by the method for preparing the anti-condensation hydrophobic material according to any one of claims 1 to 8, or the anti-condensation hydrophobic material according to claim 9 in a ship cabin.

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