Corrosion-resistant oak board and method of making the same

Abstract

The application discloses a kind of corrosion-resistant oak boards and preparation method thereof.The preparation method of the corrosion-resistant oak board includes soaking oak board in wood preservative solution, and the wood preservative solution contains dodecyl dimethyl benzyl ammonium chloride and boron-containing compound.By using dodecyl dimethyl benzyl ammonium chloride and boron-containing compound with broad-spectrum antibacterial, antifungal and insect prevention effect as the main preservative raw material, the corrosion resistance of oak board is significantly improved;Further introduce hexamethylene diisocyanate and trimethoxy (3,3,3-trifluoropropyl) silane in the wood preservative solution, improve the hydrophobicity and chemical stability of the preservative, and enhance the long-term corrosion resistance of oak board.

Description

TECHNICAL FIELD

[0001] The present application relates to a wood board material, in particular to a corrosion-resistant oak wood board and a preparation method thereof. BACKGROUND

[0002] Oak wood boards are widely used in construction and furniture manufacturing due to their excellent mechanical properties and aesthetically pleasing grain patterns. In addition, oak wood boards are also used to make wine barrels for storing red wine. The unique wood structure and chemical composition of oak wood can impart unique flavors to the wine during the aging process. The porous structure of oak wood allows the wine to come into contact with a small amount of air, promoting the maturation and complexity of the red wine. However, oak wood boards are susceptible to decay, mold, and insect infestation in humid environments, which severely affects their service life and structural strength. Therefore, effective corrosion protection of oak wood boards to improve their durability has become a technical problem to be solved.

[0003] Existing wood preservation techniques typically rely on the use of chemical preservatives to prevent decay, mold, and insect infestation of wood in humid environments. Traditional preservatives such as CCA (copper chromium arsenate), ACQ (alkyl amine copper quaternary ammonium compound), etc. have good corrosion protection effect, but they are highly toxic and pose potential hazards to the environment and human health. Moreover, some preservatives have been banned in Europe and North America. Therefore, the development of a safe, efficient, and environmentally friendly wood preservative has become a research hotspot in the current technical field. These new preservatives need to provide long-term protection without harming the environment and users' health, while also maintaining the natural beauty and mechanical properties of the wood.

[0004] In recent years, researchers have found that boron-containing compounds have gradually become a new type of environmentally friendly preservative due to their low toxicity and good corrosion protection effect. These compounds include sodium fluoroborate, sodium metaborate, and sodium tetraborate, etc. Although boron-containing compounds have good corrosion protection properties, they are easily lost in humid environments due to their water solubility, resulting in a decrease in corrosion protection effect. Therefore, relying solely on boron-containing compounds as preservatives cannot meet the corrosion protection needs of wood in humid environments for a long time. Studies have shown that the solubility of boron-containing compounds in water not only affects their durability in wood, but also can have a negative impact on the corrosion protection properties of wood, especially in wood applications that are frequently exposed to rain or high humidity environments.

[0005] In addition, recent research has also found that dodecyl dimethyl benzyl ammonium chloride (DDBAC), which has broad-spectrum antibacterial, antifungal, and insecticidal effects, has also been applied to wood preservation. DDBAC can effectively kill a variety of bacteria, fungi, and insect pests. However, although DDBAC has good corrosion protection effect, its solubility in water also causes it to be easily lost in humid environments, affecting its corrosion protection properties.

[0006] Therefore, how to effectively reduce the loss of preservatives in a humid environment and improve the preservative effect and durability thereof has become a problem to be solved. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a corrosion-resistant oak board and a preparation method thereof, which have strong and durable corrosion resistance.

[0008] The present application aims to improve the corrosion resistance of oak boards by selecting dodecyl dimethyl benzyl ammonium chloride, which has broad-spectrum antibacterial, antifungal and insect repellent effects, and boron-containing compounds such as sodium fluoroborate, sodium metaborate and sodium tetraborate, which can provide boron elements, as the main preservative raw materials. However, dodecyl dimethyl benzyl ammonium chloride and these boron-containing compounds are both easily soluble in water, which leads to their easy loss in a humid environment and affects the preservative effect. In order to overcome this problem, the present application introduces hexamethylene diisocyanate and trimethoxy(3,3,3-trifluoropropyl)silane, which have high hydrophobicity. These components improve the hydrophobicity of the preservatives, enhance their durability and anti-loss performance in the oak board, and thus significantly improve the long-acting preservative effect of the oak board.

[0009] Specifically, the technical solution of the present application is as follows:

[0010] The present application provides a preparation method of a corrosion-resistant oak board, which comprises soaking the oak board in a wood preservative solution, wherein the wood preservative solution comprises dodecyl dimethyl benzyl ammonium chloride and a boron-containing compound.

[0011] Preferably, the wood preservative solution comprises the following raw materials in mass percentage: 1-5wt% dodecyl dimethyl benzyl ammonium chloride and 1-4wt% boron-containing compound.

[0012] Preferably, the wood preservative solution comprises the following raw materials in mass percentage: 2-4wt% dodecyl dimethyl benzyl ammonium chloride and 2-3wt% boron-containing compound.

[0013] Preferably, the boron-containing compound is at least one of sodium fluoroborate, sodium metaborate and sodium tetraborate.

[0014] Preferably, the wood preservative solution further comprises hexamethylene diisocyanate and trimethoxy(3,3,3-trifluoropropyl)silane.

[0015] Preferably, the wood preservative solution comprises the following raw materials in mass percentage: 2-4wt% dodecyl dimethyl benzyl ammonium chloride, 2-3wt% boron-containing compound, 0.2-0.8wt% hexamethylene diisocyanate and 0.2-0.8wt% trimethoxy(3,3,3-trifluoropropyl)silane.

[0016] Preferably, the wood preservative solution comprises the following raw materials in mass percentage: 2-4wt% dodecyl dimethyl benzyl ammonium chloride, 2-3wt% boron-containing compound, 0.2-0.8wt% hexamethylene diisocyanate, 0.2-0.8wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.5-1.5wt% surfactant, 3-7wt% ethanol, and the balance being water.

[0017] Preferably, the soaking step is a vacuum pressure soaking process.

[0018] Preferably, the vacuum pressure soaking process has a vacuum degree of 0.1-0.6Mpa and a soaking time of 60-120 minutes.

[0019] Preferably, the vacuum pressure soaking process is a two-stage vacuum pressure soaking process, wherein the first-stage vacuum pressure soaking process has a vacuum degree of 0.1-0.3Mpa and a soaking time of 30-60 minutes, and the second-stage vacuum pressure soaking process has a vacuum degree of 0.4-0.6Mpa and a soaking time of 30-60 minutes.

[0020] The application also provides a corrosion-resistant oak board prepared by the above method.

[0021] The application provides a corrosion-resistant oak board and a preparation method thereof. By using dodecyl dimethyl benzyl ammonium chloride and a boron-containing compound as main raw materials for wood preservation, which have broad-spectrum antibacterial, antifungal and insect prevention effects, and further introducing hexamethylene diisocyanate and trimethoxy(3,3,3-trifluoropropyl)silane, the hydrophobicity and chemical stability of the preservative are improved, and the long-acting preservation effect of the oak board is significantly improved. DETAILED DESCRIPTION

[0022] The application discloses a preparation method of a corrosion-resistant oak board, which comprises subjecting the oak board to a vacuum pressure soaking process in a wood preservative solution.

[0023] The wood preservative solution comprises the following raw materials in mass percentage: 2-4wt% dodecyl dimethyl benzyl ammonium chloride, 2-3wt% boron-containing compound, 0.2-0.8wt% hexamethylene diisocyanate, 0.2-0.8wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.5-1.5wt% surfactant, 3-7wt% ethanol, and the balance being water.

[0024] The preparation method of the wood preservative comprises the following steps: mixing dodecyl dimethyl benzyl ammonium chloride, a boron-containing compound, a surfactant and water to obtain A liquid; mixing hexamethylene diisocyanate, trimethoxy(3,3,3-trifluoropropyl)silane and ethanol to obtain B liquid; and mixing the A liquid and the B liquid to obtain the wood preservative solution.

[0025] Dodecyl dimethyl benzyl ammonium chloride (DDBAC), CAS No. 139-07-1, as the main preservative, has broad-spectrum antibacterial, antifungal and insect-repellent effects, and can effectively inhibit the growth of microorganisms in wood, significantly improving the preservative performance of oak boards.

[0026] Boron-containing compounds such as sodium fluoroborate, sodium metaborate and sodium tetraborate provide boron elements and have the effects of preservative, insect-repellent and antifungal. Their low toxicity and high efficiency make them important components of environmentally friendly preservatives.

[0027] Further, it is found that the existing boron-containing compounds such as sodium fluoroborate, sodium metaborate and sodium tetraborate have poor long-acting performance of preservative effect due to their good water solubility. In order to fundamentally improve this technical defect, the present application uses water-insoluble boron-containing compound tridecyl borate as the main preservative raw material to replace sodium fluoroborate, sodium metaborate and sodium tetraborate. Tridecyl borate, English name Tris(decyl)borate, CAS No. 20236-81-1.

[0028] Specifically, the wood preservative solution comprises the following raw materials in mass percentage: 2-4wt% dodecyl dimethyl benzyl ammonium chloride, 2-3wt% tridecyl borate, 0.2-0.8wt% hexamethylene diisocyanate, 0.2-0.8wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.5-1.5wt% surfactant, 3-7wt% ethanol, and the balance is water. Dodecyl dimethyl benzyl ammonium chloride, Tween 80 surfactant and water are mixed to obtain A liquid; tridecyl borate, hexamethylene diisocyanate, trimethoxy(3,3,3-trifluoropropyl)silane and ethanol are mixed to obtain B liquid; A liquid is gradually added to B liquid, stirring is maintained, and uniform mixing is obtained to obtain the wood preservative solution.

[0029] Hexamethylene diisocyanate (HDI), CAS No. 822-06-0, reacts with the hydroxyl groups in the wood through its isocyanate groups to form stable urethane bonds (-NH-CO-O-), enhancing the fixation and chemical stability of the preservative, forming a stable three-dimensional network structure, and improving the durability and anti-leaching of the preservative.

[0030] Trimethoxy(3,3,3-trifluoropropyl)silane, CAS No. 429-60-7, reacts with the hydroxyl groups in the wood through its trimethoxy groups to form siloxane bonds (Si-O-Si), improving the adhesion of the preservative. Its trifluoropropyl structure increases the hydrophobicity of the preservative, forming a water-repellent layer on the surface of the wood, preventing the intrusion of water and external substances.

[0031] The surfactant helps to disperse the water-insoluble ingredients, forming a uniform emulsion, ensuring the uniformity and stability of the preservative solution. Preferably, the surfactant is an amphoteric surfactant or a non-ionic surfactant. Further preferably, the surfactant is a non-ionic surfactant, such as Tween 20, Tween 80, dodecyl glucoside, AEO-3, AEO-7, AEO-9, NPEO-10, PEG-40 hydrogenated castor oil, Span 20, Span 40, Span 60, Span 80, etc. can be used.

[0032] Ethanol as a solvent, helps to dissolve and disperse the ingredients, improve the efficiency and effect of wood treatment.

[0033] Water as the main solvent and medium, to ensure that the components are evenly mixed and effective penetration of wood.

[0034] The wood preservative solution significantly improves the antibacterial, antiseptic, mildewproof and durability of wood through the synergistic effect of multiple components, especially by introducing hexamethylene diisocyanate and trimethoxy(3,3,3-trifluoropropyl)silane, improving the fixation and hydrophobicity of the preservative, forming a stable three-dimensional network structure and waterproof layer, effectively preventing the intrusion of water and external substances, prolonging the service life of wood, while having excellent environmental protection properties.

[0035] A method for preparing a corrosion-resistant oak board, comprising vacuum pressure soaking process of oak board in wood preservative solution.

[0036] The vacuum pressure soaking process is a two-stage vacuum pressure soaking process, wherein the first stage vacuum pressure soaking process is a vacuum degree of 0.1-0.3Mpa, soaking time 30-60 minutes; the second stage vacuum pressure soaking process is a vacuum degree of 0.4-0.6Mpa, soaking time 30-60 minutes.

[0037] The first stage vacuum pressure soaking process is to gradually remove the air inside the wood under lower vacuum conditions, reduce the air bubbles inside the wood, and prevent the wood from cracking during the subsequent pressure process. This process also allows the preservative solution to initially enter the intercellular space and small pores of the wood, and begin to evenly distribute the preservative solution, laying the foundation for the subsequent full penetration of the preservative solution under higher pressure.

[0038] The second stage vacuum pressure soaking process is to further deepen the penetration of the preservative solution under higher vacuum conditions, press the preservative solution into the deep cells and smaller pores of the wood, and ensure the uniform distribution of the preservative solution inside the wood. This process improves the fixation of the preservative, allowing the preservative solution to penetrate deep into the wood, thereby significantly enhancing the corrosion resistance and durability of the wood. Through high-pressure penetration, the preservative solution forms a uniform and stable corrosion barrier inside the wood, maximizing the service life of the wood.

[0039] Preferably, the mass ratio of the oak board to the wood preservative solution is 1:(5-100).

[0040] After the vacuum pressure soaking process, the oak board is taken out and dried at 60-80℃, with the moisture content controlled at 8-12wt%, to obtain the corrosion-resistant oak board.

[0041] Example 1:

[0042] The wood preservative solution contains the following raw materials in the mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound sodium tetraborate, and the balance is water.

[0043] The preparation method of the wood preservative solution comprises the following steps: uniformly mixing dodecyl dimethyl benzyl ammonium chloride, boron-containing compound sodium tetraborate, and water at 30℃ to obtain the wood preservative solution.

[0044] Example 2:

[0045] The wood preservative solution contains the following raw materials in the mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound sodium tetraborate, 1.0wt% hexamethylene diisocyanate, 0.8wt% Tween 80 surfactant, 5wt% ethanol, and the balance is water.

[0046] The preparation method of the wood preservative solution comprises the following steps: uniformly mixing dodecyl dimethyl benzyl ammonium chloride, boron-containing compound sodium tetraborate, and water at 30℃ to obtain the wood preservative solution.

[0047] Example 3:

[0048] The wood preservative solution contains the following raw materials in the mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound sodium tetraborate, 1.0wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.8wt% Tween 80 surfactant, 5wt% ethanol, and the balance is water.

[0049] The preparation method of the wood preservative solution comprises the following steps: uniformly mixing dodecyl dimethyl benzyl ammonium chloride, boron-containing compound sodium tetraborate, and water at 30℃ to obtain the wood preservative solution.

[0050] Example 4:

[0051] The wood preservative solution comprises the following raw materials in mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound sodium fluoroborate, 0.5wt% hexamethylene diisocyanate, 0.5wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.8wt% Tween 80 surfactant, 5wt% ethanol, and the balance being water.

[0052] The preparation method of the wood preservative solution comprises the following steps: uniformly mixing dodecyl dimethyl benzyl ammonium chloride, boron-containing compound sodium fluoroborate, Tween 80 surfactant and water at 30°C to obtain A liquid; uniformly mixing hexamethylene diisocyanate, trimethoxy(3,3,3-trifluoropropyl)silane and ethanol at 30°C to obtain B liquid; gradually adding A liquid into B liquid, keeping stirring, and uniformly mixing at 30°C to obtain the wood preservative solution.

[0053] Example 5:

[0054] The wood preservative solution comprises the following raw materials in mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound sodium fluoroborate, 0.5wt% hexamethylene diisocyanate, 0.5wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.8wt% Tween 80 surfactant, 5wt% ethanol, and the balance being water.

[0055] The preparation method of the wood preservative solution comprises the following steps: uniformly mixing dodecyl dimethyl benzyl ammonium chloride, boron-containing compound sodium fluoroborate, Tween 80 surfactant and water at 30°C to obtain A liquid; uniformly mixing hexamethylene diisocyanate, trimethoxy(3,3,3-trifluoropropyl)silane and ethanol at 30°C to obtain B liquid; gradually adding A liquid into B liquid, keeping stirring, and uniformly mixing at 30°C to obtain the wood preservative solution.

[0056] Example 6:

[0057] The wood preservative solution comprises the following raw materials in mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound sodium fluoroborate, 0.5wt% hexamethylene diisocyanate, 0.5wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.8wt% Tween 80 surfactant, 5wt% ethanol, and the balance being water.

[0058] The preparation method of the wood preservative comprises the following steps: mixing dodecyl dimethyl benzyl ammonium chloride, a boron-containing compound sodium tetraborate, Tween 80 surfactant and water at 30 DEG C uniformly to obtain liquid A; mixing hexamethylene diisocyanate, trimethoxy (3, 3, 3-trifluoropropyl) silane and ethanol at 30 DEG C uniformly to obtain liquid B; gradually adding liquid A into liquid B, keeping stirring, and mixing uniformly at 30 DEG C to obtain the wood preservative liquid.

[0059] Example 7:

[0060] The wood preservative liquid comprises the following raw materials in mass percentage: 3wt% dodecyl dimethyl benzyl ammonium chloride, 2.5wt% boron-containing compound tridecyl borate, 0.5wt% hexamethylene diisocyanate, 0.5wt% trimethoxy (3, 3, 3-trifluoropropyl) silane, 0.8wt% Tween 80 surfactant, 5wt% ethanol, and the balance being water.

[0061] The preparation method of the wood preservative comprises the following steps:

[0062] Mixing dodecyl dimethyl benzyl ammonium chloride, Tween 80 surfactant and water at 30 DEG C uniformly to obtain liquid A; mixing boron-containing compound tridecyl borate, hexamethylene diisocyanate, trimethoxy (3, 3, 3-trifluoropropyl) silane and ethanol at 30 DEG C uniformly to obtain liquid B; gradually adding liquid A into liquid B, keeping stirring, and mixing uniformly at 30 DEG C to obtain the wood preservative liquid.

[0063] Application examples 1-7:

[0064] A preparation method of a corrosion-resistant oak board:

[0065] Drying the oak board at 80 DEG C to a water content of 10wt% to obtain dried oak board;

[0066] Placing the dried oak board in the wood preservative liquid of application examples 1-7 with a weight of 20 times, and continuously carrying out two-stage vacuum pressure immersion processes,

[0067] The first-stage vacuum pressure immersion process: vacuum degree 0.2Mpa, 28 DEG C, and immersion time 50 minutes;

[0068] The second-stage vacuum pressure immersion process: vacuum degree 0.5Mpa, 28 DEG C, and immersion time 50 minutes;

[0069] After the two-stage vacuum pressure immersion processes, taking out the oak board, drying at 75 DEG C, and controlling the final moisture content to be 10wt% to obtain the corrosion-resistant oak board.

[0070] Application example 1 corresponds to the wood preservative liquid of example 1, application example 2 corresponds to the wood preservative liquid of example 2, and so on.

[0071] Application Example 8:

[0072] A method for preparing a corrosion-resistant oak board:

[0073] Drying the oak board at 80℃ to a moisture content of 10wt%, to obtain a dried oak board;

[0074] Placing the dried oak board in the wood preservative solution of Example 6 at 20 times the weight of the oak board, and performing a vacuum pressure immersion process at a vacuum degree of 0.35Mpa and 28℃ for 100 minutes;

[0075] After the vacuum pressure immersion process, taking out the oak board and drying it at 75℃, and controlling the final moisture content to be 10wt%, to obtain the corrosion-resistant oak board.

[0076] Application Example 9:

[0077] A method for preparing a corrosion-resistant oak board:

[0078] Drying the oak board at 80℃ to a moisture content of 10wt%, to obtain a dried oak board;

[0079] Placing the dried oak board in the wood preservative solution of Example 6 at 20 times the weight of the oak board, and performing a vacuum pressure immersion process at 28℃ for 100 minutes;

[0080] After the immersion process, taking out the oak board and drying it at 75℃, and controlling the final moisture content to be 10wt%, to obtain the corrosion-resistant oak board.

[0081] Test Example 1:

[0082] The corrosion resistance was tested according to GB / T 13942.1-2009 Wood durability Performance Part 1: Natural Corrosion Laboratory Test Method.

[0083] Taking 20mm×20mm×10mm oak boards treated with the wood preservative solutions of Application Examples 1-7, tree species: white oak, origin: USA, test fungus: Gloeophyllum trabeum (Pers.) Murrill (strain number: CFCC86617), incubation chamber temperature: 28℃, incubation chamber relative humidity: 80%.

[0084] Calculating the mass loss rate of the wood sample before and after decay, and evaluating the corrosion resistance of the sample; the lower the mass loss rate, the better the corrosion resistance of the material; the higher the mass loss rate, the worse the corrosion resistance of the material.

[0085] The blank example is an oak wood that has not been treated with a wood preservative solution.

[0086] Table 1: Wood preservative performance test table

[0087] Sample mass loss rate (%) Example 1 14.71 Example 2 8.94 Example 3 8.16 Example 4 6.38 Example 5 7.54 Example 6 4.22 Example 7 2.67 Example 8 5.68 Example 9 8.83 Blank Example 28.94

[0088] The preservative performance of Example 6 is better than that of Example 2 and Example 3. Hexamethylene diisocyanate reacts with the hydroxyl groups in the wood through its isocyanate groups to form stable urethane bonds, which not only enhances the fixation of the preservative but also forms a stable three-dimensional network structure, significantly improving the durability and leaching resistance of the preservative. Trimethoxy(3,3,3-trifluoropropyl)silane reacts with the hydroxyl groups in the wood through its trimethoxy groups to form siloxane bonds, thereby improving the adhesion of the preservative. At the same time, its trifluoropropyl structure increases the hydrophobicity of the preservative, forming a waterproof layer on the surface of the wood and effectively preventing the intrusion of moisture and external substances. Hexamethylene diisocyanate and trimethoxy(3,3,3-trifluoropropyl)silane provide chemical stability and physical barrier by enhancing the fixation and hydrophobicity of the preservative, respectively, and the two work together to significantly improve the preservative effect and durability of the wood, making the preservative exhibit more durable and efficient preservative performance in a humid environment.

[0089] The preservative performance of Example 6 is better than that of Example 4 and Example 5. Sodium tetraborate (Na2B4O7) is a polyborate salt with a high boron content and forms more stable boron compounds inside the wood. This polyborate salt not only performs well in terms of preservative, insect and mold prevention, but its moderate solubility can effectively penetrate into the wood and is not easily lost in a humid environment. In contrast, sodium fluoroborate (NaBF4) contains fluorine elements that can enhance preservative performance, but its boron content is low, and the presence of fluorine elements may increase its solubility and risk of loss, thereby reducing the preservative effect in a humid environment. Sodium metaborate (NaBO2) is a monoborate salt with the lowest boron content and the highest solubility, so it loses faster in a humid environment and has relatively weak preservative effect.

[0090] In summary, sodium tetraborate has higher stability in wood and can form stronger chemical bonds with the components in the wood, thereby maintaining its preservative effect in a humid environment for a long time. The cross-linked structure formed by polyborate is more complex and stable, significantly improving the preservative performance and durability. Sodium fluoroborate has certain preservative performance, but due to its high solubility and the presence of fluorine elements, it has a higher loss rate in a humid condition and a lower preservative effect than sodium tetraborate. Sodium metaborate has the weakest stability and preservative effect due to its lowest boron content and high solubility. Therefore, the preservative performance ranking is Example 6 (sodium tetraborate) > Example 4 (sodium fluoroborate) > Example 5 (sodium metaborate).

[0091] Compared with Example 6, Example 7 has a better preservative effect. The main reason is that the tridecyl borate used has higher hydrophobicity and anti-leaching performance compared with sodium tetraborate. Sodium tetraborate is a hydrophilic compound that is easily dissolved in water during wood preservative treatment, and the boron compounds formed are easily dissolved and leached in a humid environment, thereby reducing the preservative effect. Tridecyl borate exhibits strong hydrophobicity due to its long-chain alkyl structure and is insoluble in water. When wood is treated with tridecyl borate, the compound can form a hydrophobic protective layer on the surface and inside of the wood, effectively preventing water from entering the wood, improving the water resistance of the wood, and reducing the leaching of the preservative. In addition, the boron element provided by tridecyl borate reacts with the polyhydroxy compounds (such as cellulose) in the wood to form stable boron compounds, and its long-chain alkyl structure forms a hydrophobic barrier on the surface of the wood, further enhancing the durability of the preservative effect.

[0092] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any changes or substitutions not through creative labor should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. A method for preparing corrosion-resistant oak boards, comprising immersing the oak boards in a wood preservative solution, characterized in that, The wood preservative liquid comprises the following raw materials in the following weight percentages: 2-4 wt% dodecyl dimethyl benzyl ammonium chloride, 2-3 wt% tridecyl borate, 0.2-0.8 wt% hexamethylene diisocyanate, 0.2-0.8 wt% trimethoxy(3,3,3-trifluoropropyl)silane, 0.5-1.5 wt% surfactant, 3-7 wt% ethanol, and the balance being water; The soaking step is a vacuum pressure soaking process.

2. The method for preparing corrosion-resistant oak board as described in claim 1, characterized in that, The vacuum pressure immersion process is performed with a vacuum degree of 0.1-0.6 MPa and an immersion time of 60-120 minutes.

3. The method for preparing corrosion-resistant oak board as described in claim 2, characterized in that, The vacuum pressure immersion process is a two-stage vacuum pressure immersion process, wherein the first stage of the vacuum pressure immersion process has a vacuum degree of 0.1-0.3 MPa and an immersion time of 30-60 minutes; the second stage of the vacuum pressure immersion process has a vacuum degree of 0.4-0.6 MPa and an immersion time of 30-60 minutes.

4. A corrosion-resistant oak board, characterized in that, It is prepared by any one of the methods described in claims 1-3.