Antibacterial and antiseptic door and window curtain wall and preparation method thereof

Abstract

This application relates to the field of building door and window technology, specifically disclosing an antibacterial and anti-corrosion door and window curtain wall and its preparation method; an antibacterial and anti-corrosion door and window curtain wall includes a door and window frame, insulated glass, an antibacterial layer and an anti-corrosion layer, wherein the anti-corrosion layer raw materials include component A and component B, wherein component A includes the following raw materials in parts by weight: 50-70 parts epoxy resin, 10-15 parts aniline-fluoroaniline composite, 5-8 parts additives, 1-3 parts dispersant, and 3-5 parts corrosion inhibitor; through the combination of each component, the prepared door and window coating has both good anti-corrosion performance and antibacterial effect.

Description

Technical Field

[0001] This application relates to the field of building door and window technology, and in particular to an antibacterial and anti-corrosion door and window curtain wall and its preparation method. Background Technology

[0002] In the construction industry, doors, windows, and curtain walls are crucial components of buildings, and their performance has a vital impact on the overall quality and user experience. As products constantly exposed to the outdoor environment, research data shows that ordinary spray-painted windows in coastal areas experience a corrosion rate as high as 62% after 5 years, and after 3 years of UV exposure, the color difference ΔE ≥ 5, with noticeable fading visible to the naked eye. Furthermore, after installation, doors and windows inevitably leave behind dead corners, especially in humid weather. These corners are highly susceptible to mold growth, causing the materials themselves to deteriorate and leading to a decrease in thermal insulation and soundproofing performance, directly affecting the product's usability.

[0003] Conventional anti-corrosion coatings prevent corrosive substances from penetrating the substrate, ensuring that the corrosion reaction occurs only on the coating surface, thus slowing down the corrosion of metal materials. However, anti-corrosion coatings cannot completely stop the metal corrosion process. Due to micropores or external mechanical damage during use, localized corrosion can occur inside the coating, thereby reducing its anti-corrosion performance. Summary of the Invention

[0004] In order to improve the antibacterial and anti-corrosion properties of existing door and window coatings, this application provides an antibacterial and anti-corrosion door and window curtain wall and its preparation method.

[0005] In the first aspect, this application provides an antibacterial and anti-corrosion door, window, and curtain wall, which adopts the following technical solution: An antibacterial and anti-corrosion door and window curtain wall includes a door and window frame, insulated glass, an antibacterial layer and an anti-corrosion layer. The anti-corrosion layer raw materials include component A and component B. Component A includes the following raw materials in parts by weight: 50-70 parts epoxy resin, 10-15 parts aniline-fluoroaniline composite, 5-8 parts additives, 1-3 parts dispersant, and 3-5 parts corrosion inhibitor.

[0006] By employing the above technical solution, aniline and fluoroaniline are copolymerized and composited. Fluoroaniline reduces the surface layer of the coating, improving its corrosion resistance. Aniline molecules provide the coating with good antibacterial activity, and the combined effect of aniline and fluoroaniline reduces the intrusion and contamination of corrosive substances. The corrosion inhibitor can form a passivation film on the substrate surface, sealing micropores and inhibiting the formation of corrosion pits on the coating surface.

[0007] In the anti-corrosion layer, epoxy resin is used as the matrix to form a cross-linked network in the coating system. The aniline and fluoroaniline copolymer composite forms an electrochemical shield on the coating surface. The hydrophobic surface of the fluorine segments reduces the adsorption of chemical substances. At the same time, corrosion inhibitors are used for local sealing. Through the multiple effects of epoxy resin, corrosion inhibitors and aniline and fluoroaniline copolymer composite, the coating can achieve long-term anti-corrosion and reduce the intrusion and contamination of corrosive substances on the substrate.

[0008] Preferably, the corrosion inhibitor is adenosine.

[0009] By adopting the above technical solution, adenosine acid, a green corrosion inhibitor, can replace traditional chromium salt corrosion inhibitors and reduce environmental pollution. The phosphate groups of adenosine acid have a strong affinity for the substrate surface, forming a protective layer that locally seals defects, delays pitting and under-film corrosion, and improves the corrosion resistance of the coating.

[0010] Preferably, the corrosion inhibitor is coated with silica, comprising the following specific steps: The corrosion inhibitor was mixed with water to obtain an aqueous solution of the corrosion inhibitor. The emulsifier, cyclohexane, and ammonia were mixed and added to the aqueous solution of the corrosion inhibitor. After emulsification, tetraethyl orthosilicate was added to react. Finally, anhydrous ethanol was used to break the emulsion, and the mixture was centrifuged and dried to obtain the silica-corrosion inhibitor complex.

[0011] By employing the above technical solution, the corrosion inhibitor is encapsulated in silica, allowing it to be slowly released at the scratches on the coating. It then adsorbs and binds to the substrate, forming an insoluble protective film on the substrate surface, thus slowing down the corrosion process. Simultaneously, the silica encapsulation of the corrosion inhibitor slows its release rate, promoting its continuous diffusion in the corrosive medium to the exposed substrate surface, where it interacts to form a film, effectively inhibiting corrosion of the door and window substrate.

[0012] Preferably, the mass ratio of the emulsifier to cyclohexane, ammonia, and corrosion inhibitor is (1.5-2):(12-15):1:(0.5-0.8), and the mass ratio of tetraethyl orthosilicate to corrosion inhibitor is (15-20):1.

[0013] Preferably, the preparation method of the aniline-fluoroaniline complex includes the following specific steps: sodium dodecylbenzenesulfonate, polyethylene glycol octylphenyl ether and n-butanol are mixed to obtain a reaction solution, aniline and 2-fluoroaniline are added to the reaction solution, the mixture is stirred evenly and hydrochloric acid is added dropwise, ammonium persulfate is added to the reaction solution, the reaction is carried out, and finally the mixture is filtered, washed and dried to obtain the aniline-fluoroaniline complex.

[0014] Preferably, the mass ratio of sodium dialkylbenzenesulfonate, polyethylene glycol octylphenyl ether, and n-butanol is 1:(2.5-3):(2-2.5), and the mass ratio of the reaction solution to aniline, 2-fluoroaniline, and ammonium persulfate is (5-8):1:(1-1.2):(0.03-0.05).

[0015] Preferably, component B is one of diethylenetriamine, m-phenylenediamine, and hexamethylenediamine, and the mass ratio of component A to component B is (2-4):1.

[0016] Preferably, the antibacterial layer comprises the following raw materials in parts by weight: 50-80 parts epoxy resin, 10-15 parts nano silver, 3-5 parts curing agent, and 1-3 parts leveling agent.

[0017] By adopting the above technical solution, the main matrix of both the antibacterial layer and the anticorrosive layer is epoxy resin. The curing agent can react with the epoxy groups of both layers simultaneously to form an interpenetrating network structure, improving the overall adhesion of the coating and making it less prone to peeling or blistering. A small amount of nano-silver in the antibacterial layer migrates to the interface, and Ag⁺ also has a corrosion-inhibiting effect, precipitating chloride ions and forming a silver film, thus assisting the anticorrosive layer in playing a role in corrosion prevention.

[0018] Secondly, this application provides a method for preparing antibacterial and anti-corrosion doors, windows, and curtain walls, employing the following technical solution: A method for preparing antibacterial and anti-corrosion doors, windows, and curtain walls includes the following specific steps: Epoxy resin, aniline-fluoroaniline complex, additives, dispersants, and corrosion inhibitors are mixed to form component A. Component A and component B are then mixed to obtain the anti-corrosion coating mixture. After the door and window frame base is installed, the insulated glass is embedded in the frame and sealed and fixed. First, an antibacterial coating is sprayed on the inside of the glass and the surface of the door and window frame. Then, an anti-corrosion layer mixture is sprayed on the surface of the door and window frame. After curing, an anti-corrosion layer is formed, thus producing an antibacterial and anti-corrosion door and window curtain wall.

[0019] By adopting the above technical solutions and combining the various components, it is possible to make doors, windows and curtain walls have good antibacterial and anti-corrosion properties, while the use of insulated glass has a good energy-saving effect.

[0020] Preferably, the thickness of the antibacterial layer is 1-10 μm, and the thickness of the anti-corrosion layer is 10-30 μm.

[0021] In summary, this application has the following beneficial effects: 1. Because this application employs a copolymer of aniline and fluoroaniline in the anti-corrosion layer, the hydrophobic surface of the fluorine segments reduces the adsorption of chemical substances, thereby minimizing the intrusion and contamination of corrosive substances and improving the corrosion resistance of the coating surface. Through the multiple effects of epoxy resin, corrosion inhibitors, and the aniline and fluoroaniline copolymer composite, the coating achieves long-term anti-corrosion performance, reducing the intrusion and contamination of corrosive substances on the substrate.

[0022] 2. This application uses adenosine as a corrosion inhibitor to replace the environmental pollution caused by traditional chromium salt corrosion inhibitors. Simultaneously, the corrosion inhibitor is encapsulated in silica, allowing it to be slowly released at the coating scratches and then adsorbed and combined with the substrate to form an insoluble protective film on the substrate surface. This slows down the corrosion process and improves the coating's corrosion resistance and durability. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the embodiments.

[0024] All raw materials used in the examples are commercially available.

[0025] Preparation Example 1 The preparation method of aniline-fluoroaniline complex includes the following specific steps: Sodium dodecylbenzenesulfonate, polyethylene glycol octylphenyl ether, and n-butanol were mixed and stirred until homogeneous. The mass ratio of sodium dodecylbenzenesulfonate, polyethylene glycol octylphenyl ether, and n-butanol was 1:2.5:2.5 to obtain a reaction solution. Aniline and 2-fluoroaniline were then added to the reaction solution, and the mixture was stirred until homogeneous. Hydrochloric acid was then added dropwise until the solution became transparent. Ammonium persulfate was then added to the reaction solution. The mass ratio of the reaction solution to aniline, 2-fluoroaniline, and ammonium persulfate was 5:1:1.2:0.03. The reaction was carried out at 20°C for 6 hours. Finally, the mixture was filtered, washed, and dried to obtain the aniline-fluoroaniline complex.

[0026] Preparation Example 2 The difference between Preparation Example 2 and Preparation Example 1 is that the mass ratio of sodium dodecylbenzenesulfonate, polyethylene glycol octylphenyl ether, and n-butanol in the preparation method of the aniline-fluoroaniline complex is 1:3:2.

[0027] Preparation Example 3 The difference between Preparation Example 3 and Preparation Example 1 is that the mass ratio of the reaction solution to aniline, 2-fluoroaniline and ammonium persulfate in the preparation method of the aniline-fluoroaniline complex is 8:1:1:0.05. Example Example 1

[0028] This embodiment provides an antibacterial and anti-corrosion door and window curtain wall, including a door and window frame, insulated glass, an antibacterial layer and an anti-corrosion layer. The anti-corrosion layer raw materials include component A and component B, where component B is diethylenetriamine. The mass ratio of component A to component B is 3:1. Component A includes the following raw materials in parts by weight: 60 kg of epoxy resin, 13 kg of aniline-fluoroaniline composite, 7 kg of additives, 2 kg of dispersant, and 4 kg of corrosion inhibitor. The additives are defoamer and leveling agent in a mass ratio of 1:1. The defoamer is BYK-057, the leveling agent is BYK-310, the dispersant is BYK-163, the corrosion inhibitor is adenosine, and the epoxy resin is E-12 (604). The aniline-fluoroaniline composite is derived from Preparation Example 1.

[0029] The antibacterial layer comprises the following raw materials in parts by weight: 70 kg of epoxy resin, 13 kg of nano silver, 4 kg of curing agent, and 2 kg of leveling agent; the curing agent is adipic acid dihydrazide, the epoxy resin is E-12 (604), the average diameter of the nano silver is 20 nm, and the leveling agent is BYK-310.

[0030] The preparation method of antibacterial and anti-corrosion doors, windows and curtain walls includes the following specific steps: S1: Mix epoxy resin, aniline-fluoroaniline complex, additives, dispersant, and corrosion inhibitor to form component A. Mix component A and component B and stir evenly to obtain the anti-corrosion layer mixture. Mix epoxy resin, nano silver, curing agent, and leveling agent and stir evenly to obtain the antibacterial layer mixture.

[0031] S2: After the door and window frame base is installed, the insulated glass is embedded in the frame and sealed and fixed. First, an antibacterial layer mixture is sprayed on the inside of the glass and the surface of the door and window frame. After curing, an antibacterial layer is formed. Then, an anti-corrosion layer mixture is sprayed on the surface of the door and window frame. After curing, an anti-corrosion layer is formed, thus producing an antibacterial and anti-corrosion door and window curtain wall.

[0032] Example 2 The difference between Example 2 and Example 1 is that the anti-corrosion layer A component includes the following raw materials in parts by weight: 50 kg of epoxy resin, 15 kg of aniline-fluoroaniline composite, 5 kg of additives, 1 kg of dispersant, and 3 kg of corrosion inhibitor.

[0033] Example 3 The difference between Example 3 and Example 1 is that the anti-corrosion layer A component includes the following raw materials in parts by weight: 70 kg of epoxy resin, 10 kg of aniline-fluoroaniline composite, 8 kg of additives, 3 kg of dispersant, and 5 kg of corrosion inhibitor.

[0034] Example 4 The difference between Example 4 and Example 1 is that the antibacterial layer includes the following raw materials in parts by weight: 50 kg of epoxy resin, 15 kg of nano silver, 3 kg of curing agent, and 1 kg of leveling agent.

[0035] Example 5 The difference between Example 5 and Example 1 is that the antibacterial layer includes the following raw materials in parts by weight: 80 kg of epoxy resin, 10 kg of nano silver, 5 kg of curing agent, and 3 kg of leveling agent.

[0036] Example 6 The difference between Example 6 and Example 1 is that the aniline-fluoroaniline complex in component A of the anti-corrosion layer is derived from Preparation Example 2.

[0037] Example 7 The difference between Example 7 and Example 1 is that the aniline-fluoroaniline complex in component A of the anti-corrosion layer is derived from Preparation Example 3.

[0038] Example 8 The difference between Example 8 and Example 1 is that the corrosion inhibitor is encapsulated in silica.

[0039] The preparation method of antibacterial and anti-corrosion doors, windows and curtain walls includes the following specific steps: S1: The corrosion inhibitor was mixed with water at a volume ratio of 1:50 to obtain an aqueous solution of the corrosion inhibitor. The emulsifier, cyclohexane, and ammonia were mixed. The emulsifier was Span 80, and the mass ratio of the emulsifier to cyclohexane, ammonia, and corrosion inhibitor was 1.5:12:1:0.5. The mixture was slowly added to the aqueous solution of the corrosion inhibitor. After sufficient emulsification, tetraethyl orthosilicate was slowly added. The mass ratio of tetraethyl orthosilicate to corrosion inhibitor was 15:1. The reaction was carried out for 24 hours. Finally, the emulsion was broken with anhydrous ethanol, centrifuged, and dried at 50°C to obtain the silica-corrosion inhibitor complex.

[0040] S2: Mix epoxy resin, aniline-fluoroaniline complex, additives, dispersants, and corrosion inhibitors to form component A. Mix component A and component B and stir evenly to obtain the anti-corrosion layer mixture. Mix epoxy resin, nano silver, curing agent, and leveling agent and stir evenly to obtain the antibacterial layer mixture.

[0041] S3: After the door and window frame base is installed, the insulated glass is embedded in the frame and sealed and fixed. First, an antibacterial layer mixture is sprayed on the inside of the glass and the surface of the door and window frame. After curing, an antibacterial layer is formed. Then, an anti-corrosion layer mixture is sprayed on the surface of the door and window frame. After curing, an anti-corrosion layer is formed, thus producing an antibacterial and anti-corrosion door and window curtain wall.

[0042] Example 9 The difference between Example 9 and Example 8 is that in the preparation method of antibacterial and anti-corrosion doors, windows and curtain walls, the mass ratio of emulsifier to cyclohexane, ammonia and corrosion inhibitor is 2:15:1:0.8, and the mass ratio of tetraethyl orthosilicate to corrosion inhibitor is 20:1.

[0043] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the antibacterial and anti-corrosion doors, windows and curtain walls do not use an antibacterial layer.

[0044] The preparation method of antibacterial and anti-corrosion doors, windows and curtain walls includes the following specific steps: S1: Mix epoxy resin, aniline-fluoroaniline complex, additives, dispersant and corrosion inhibitor to form component A. Mix component A and component B and stir evenly to obtain anti-corrosion coating mixture.

[0045] S2: After the door and window frame base is installed, the insulated glass is embedded in the frame and sealed and fixed. The anti-corrosion layer mixture is sprayed on the surface of the door and window frame. After curing, an anti-corrosion layer is formed, and an antibacterial and anti-corrosion door and window curtain wall is produced.

[0046] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the aniline-fluoroaniline complex is not used in the raw materials of component A of the anti-corrosion layer.

[0047] Performance testing Based on the antibacterial and anti-corrosion doors, windows and curtain walls provided in Examples 1-9 and Comparative Examples 1-2 of this application, the following performance tests were conducted, and the specific test results are shown in Table 1.

[0048] Detection methods I. Antibacterial properties Referring to the standard GB / T21866-2008 "Determination of Antibacterial Properties and Antibacterial Effects of Antibacterial Coatings (Films)", the antibacterial rate of the antibacterial and anti-corrosion doors, windows and curtain walls prepared in this application against Escherichia coli and Staphylococcus aureus was tested.

[0049] II. Corrosion Resistance The acid and alkali resistance of the antibacterial and anti-corrosion doors, windows and curtain walls prepared in this application were tested in accordance with the standard GB / T1763-1979 "Determination of Chemical Resistance of Coatings".

[0050] III. Impact Resistance The impact resistance of the antibacterial and anti-corrosion doors, windows and curtain walls prepared in this application were tested in accordance with the standard GB / T 1732-1993 "Test Method for Impact Resistance of Coating Film".

[0051] Table 1: Performance Test Results Data Table

[0052] The performance test results show that the antibacterial and anti-corrosion doors and windows curtain walls prepared in this application have both good anti-corrosion performance and antibacterial effect. A comparison of Comparative Examples 1-2 and Example 1 reveals that Comparative Example 1, which does not use an antibacterial layer, shows that the prepared door and window coating clearly does not meet the antibacterial requirements. The only antibacterial ability in the coating may rely on the aniline molecules in the aniline-fluoroaniline composite. In Comparative Example 2, the anti-corrosion layer raw material does not use the aniline-fluoroaniline composite. The performance test results show that both the antibacterial and corrosion resistance of the prepared door and window coating decrease. This further demonstrates that the copolymerization of aniline and fluoroaniline, combined with corrosion inhibitors and epoxy resin, can promote better corrosion resistance in the prepared coating.

[0053] A comparison of Examples 8-9 and Example 1 shows that when the corrosion inhibitor is encapsulated in silica, the corrosion resistance of the prepared coating is improved, as indicated by the performance test results. At the same time, it also promotes better impact resistance of the door and window coating and extends the service life of the coating.

[0054] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An antibacterial antiseptic door and window curtain, characterized in that, It includes door and window frames, insulated glass, antibacterial layer and anti-corrosion layer. The anti-corrosion layer raw materials include component A and component B. Component A includes the following raw materials in parts by weight: 50-70 parts epoxy resin, 10-15 parts aniline-fluoroaniline composite, 5-8 parts additives, 1-3 parts dispersant, and 3-5 parts corrosion inhibitor.

2. The antibacterial antiseptic door and window curtain wall according to claim 1, characterized in that, The corrosion inhibitor is adenosine.

3. The antibacterial and anti-corrosion door, window, and curtain wall according to claim 2, characterized in that, The corrosion inhibitor is coated with silica, and the following specific steps are included: The corrosion inhibitor was mixed with water to obtain an aqueous solution of the corrosion inhibitor. The emulsifier, cyclohexane, and ammonia were mixed and added to the aqueous solution of the corrosion inhibitor. After emulsification, tetraethyl orthosilicate was added to react. Finally, anhydrous ethanol was used to break the emulsion, and the mixture was centrifuged and dried to obtain the silica-corrosion inhibitor complex.

4. The antibacterial and anti-corrosion door, window, and curtain wall according to claim 3, characterized in that, The mass ratio of the emulsifier to cyclohexane, ammonia, and corrosion inhibitor is (1.5-2):(12-15):1:(0.5-0.8), and the mass ratio of tetraethyl orthosilicate to corrosion inhibitor is (15-20):

1.

5. The antibacterial and anti-corrosion door, window, and curtain wall according to claim 1, characterized in that, The preparation method of aniline-fluoroaniline complex includes the following specific steps: sodium dodecylbenzenesulfonate, polyethylene glycol octylphenyl ether and n-butanol are mixed to obtain a reaction solution, aniline and 2-fluoroaniline are added to the reaction solution, the mixture is stirred evenly and hydrochloric acid is added dropwise, ammonium persulfate is added to the reaction solution, the reaction is carried out, and finally the mixture is filtered, washed and dried to obtain aniline-fluoroaniline complex.

6. The antibacterial and anti-corrosion door, window, and curtain wall according to claim 5, characterized in that, The mass ratio of sodium dodecylbenzenesulfonate, polyethylene glycol octylphenyl ether, and n-butanol is 1:(2.5-3):(2-2.5), and the mass ratio of the reaction solution to aniline, 2-fluoroaniline, and ammonium persulfate is (5-8):1:(1-1.2):(0.03-0.05).

7. The antibacterial and anti-corrosion door, window, and curtain wall according to claim 1, characterized in that, Component B is one of diethylenetriamine, m-phenylenediamine, and hexamethylenediamine, and the mass ratio of component A to component B is (2-4):

1.

8. The antibacterial and anti-corrosion door, window, and curtain wall according to claim 1, characterized in that, The antibacterial layer comprises the following raw materials in parts by weight: 50-80 parts epoxy resin, 10-15 parts nano silver, 3-5 parts curing agent, and 1-3 parts leveling agent.

9. A method for preparing an antibacterial and anti-corrosion door, window, and curtain wall as described in any one of claims 1-8, characterized in that, The specific steps include the following: Epoxy resin, aniline-fluoroaniline complex, additives, dispersants, and corrosion inhibitors are mixed to form component A. Component A and component B are then mixed to obtain the anti-corrosion coating mixture. After the door and window frame base is installed, the insulated glass is embedded in the frame and sealed and fixed. First, an antibacterial coating is sprayed on the inside of the glass and the surface of the door and window frame. Then, an anti-corrosion layer mixture is sprayed on the surface of the door and window frame. After curing, an anti-corrosion layer is formed, thus producing an antibacterial and anti-corrosion door and window curtain wall.

10. The method for preparing antibacterial and anti-corrosion doors, windows, and curtain walls according to claim 9, characterized in that, The antibacterial layer has a thickness of 1-10 μm, and the anti-corrosion layer has a thickness of 10-30 μm.

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