Antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC (Total Volatile Organic Compound)-removing additive, impregnated bond paper, veneer artificial board and preparation method of veneer artificial board

Abstract

The invention provides an antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing additive, impregnated bond paper, a veneer artificial board and a preparation method of the antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing additive. The antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing additive comprises a zinc ion amino long-carbon-chain antimicrobial agent, a zinc-series catalytic decomposition agent and a solvent; the zinc ion amino long-carbon-chain antimicrobial agent is prepared by the following steps: reacting zinc salt with a long-carbon-chain organic matter antimicrobial agent in an aqueous solution to obtain a zinc ion-loaded long-carbon-chain antimicrobial agent, then adding methyl carbamate, and carrying out nucleophilic substitution reaction or ammonolysis reaction. Compared with other single-function or double-function additives, the multifunctional additive is a product integrating five functions, can achieve the functions of five pain points of indoor decoration in one step, is convenient to add and use, and solves the problems of interference on compatibility and complex operation when multiple single-function agents are added and used at the same time.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of multifunctional additives, and in particular relates to an anti-bacterial, anti-viral, mildew-proof, formaldehyde-removing and TVOC-removing additive, an impregnated glue film paper, a veneered wood-based panel and a preparation method thereof. BACKGROUND

[0002] With the development of modern construction and furniture industry, wood-based panels are widely used in furniture, building decoration, packaging and vehicle and ship interior decoration due to their high cost-effectiveness, easy processing and high resource utilization rate. Since the raw materials of wood-based panels are usually derived from wood, plant fibers and other biomass materials, these materials are prone to absorb moisture and swell in a humid environment, causing the deformation of the panels. More seriously, the humid environment also promotes the growth of mold and bacteria, which not only reduces the service life of the wood-based panels, but also pollutes the indoor air by releasing spores and metabolites, posing a threat to human health.

[0003] Therefore, wood-based panel products with antibacterial functionality have become popular, and with the development of the industry, the functionality of wood-based panels has been upgraded, such as the improvement of antibacterial rate or the improvement of bacterial coverage, the addition of anti-viral, mildew-proof and formaldehyde-removing functions. Although the functionality of various brand products has been upgraded, most of them are two-in-one or three-in-one products, and the focus is limited to the antibacterial performance of the wood-based panels themselves. At the same time, due to the iteration and upgrading of the adhesive and processing technology of the wood-based panel industry over the years, the formaldehyde emission of the products has been greatly improved, and most of the products of the mainstream brands have reached E NF level. Therefore, the formaldehyde hazard of the wood-based panels is no longer the only concern of consumers, and the concern for formaldehyde and TVOC in the material and environment is increasing day by day.

[0004] Patent CN106493825 A discloses an antibacterial and mildew-proof multifunctional formaldehyde-free straw wood-based panel, which comprises a core layer, a surface layer and an antibacterial and mildew-proof negative ion adhesive layer located between the core layer and the surface layer. The antibacterial and mildew-proof negative ion adhesive comprises the following raw materials by weight: formaldehyde-free wheat straw wood-based panel special adhesive 100 parts; antibacterial and mildew-proof slow-release preparation 0.3-1 parts; negative ion additive 3-20 parts. A preparation method of the antibacterial and mildew-proof multifunctional formaldehyde-free straw wood-based panel is also disclosed. The antibacterial and mildew-proof multifunctional formaldehyde-free wood-based panel is prepared by using formaldehyde-free green wood adhesive technology, negative ion factor composite technology and antibacterial and mildew-proof slow-release technology, which integrates multiple functions such as formaldehyde removal, antibacterial and air purification, and has better environmental protection function than similar products. It solves the problem of home environmental protection and creates an indoor space negative ion forest environment, which has a significant purification effect on improving the indoor space environment of people's living and working. SUMMARY

[0005] In order to solve the problems in the prior art that the additive for artificial board cannot realize more functions in one, has no removal effect or insufficient removal effect on formaldehyde and TVOC in the material and environment, and has high cost for realizing multiple functions, based on long-term research on multifunctional additives, the present application proposes an antibacterial, mildew-proof, antiviral, aldehyde-removing and TVOC-removing functional additive treatment agent for artificial board, which is a product with five functions in one compared with other single-function or dual-function additives, can realize five pain points of indoor decoration at one time, is convenient to add and use, and eliminates the interference compatibility problem and the operation complexity problem of multiple single-function agents when used at the same time.

[0006] An antibacterial, antiviral, mildew-proof, aldehyde-removing and TVOC-removing additive, comprising a zinc ion amino long carbon chain antimicrobial agent, a zinc-based catalytic decomposition agent and a solvent.

[0007] The zinc ion amino long carbon chain antimicrobial agent is obtained by reacting a zinc salt and a long carbon chain organic antimicrobial agent in an aqueous solution to obtain a zinc ion loaded long carbon chain antimicrobial agent, and then adding methyl carbamate to obtain the zinc ion amino long carbon chain antimicrobial agent through nucleophilic substitution reaction or aminolysis reaction.

[0008] The weight proportions of the raw materials are as follows:

[0009]

[0010] The zinc ion amino long carbon chain antimicrobial agent is obtained by the following preparation process: (1) adding a long carbon chain organic antimicrobial agent to a zinc salt solution, uniformly stirring for 20-30 min, and then heating to 80-100 DEG C to react, and keeping warm for 30-60 min to fully react, to obtain a zinc ion loaded long carbon chain antimicrobial agent; (2) adding methyl carbamate to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (1), and heating to 160-180 DEG C, and keeping warm and stirring for 1-2 h to obtain the zinc ion amino long carbon chain antimicrobial agent.

[0011] The zinc salt is any one or a mixture of two or more of zinc chloride, zinc acetate, zinc gluconate, zinc citrate, zinc lactate and zinc sulfate in any proportion; the zinc salt solution is obtained by dissolving the zinc salt in a solvent, and the amount of the solvent is determined according to the amount of the zinc salt to be dissolved;

[0012] Long-chain organic antimicrobial agents are at least one of quaternary ammonium salt antimicrobial agents, guanidine antimicrobial agents, and phenolic antimicrobial agents. Quaternary ammonium salt antimicrobial agents include benzalkonium chloride, benzalkonium bromide, dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl phenoxyethyl ammonium bromide, decyl dimethyl ammonium chloride, decyl dimethyl ammonium bromide, organosilicon quaternary ammonium salts, etc. Guanidine antimicrobial agents include chlorhexidine, polyhexamethylene guanidine, polyhexamethylene biguanide, polyaminopropyl biguanide, etc. Phenolic antimicrobial agents include polyethylene glycol monooctylphenyl ether, octylphenol polyoxyethylene ether, dodecylphenol polyoxyethylene (12) ether, etc.

[0013] The aforementioned zinc-based catalytic decomposition agent is at least one of zinc isooctanoate, basic zinc carbonate, and catalysts composed of zinc salts and other metals (e.g., zinc isooctanoate combined with cobalt tetroxide or manganese dioxide, or basic zinc carbonate combined with cobalt tetroxide or manganese dioxide). The mass ratio of the aforementioned zinc-based catalytic decomposition agent to methyl carbamate is 1:(1-2.5).

[0014] The solvent mentioned above is at least one selected from water, propylene glycol, glycerol, dimethyl sulfoxide, isopropanol, ethanol, polypropylene glycol, polyethylene glycol, and ethylene glycol. The specific amount used should be adjusted according to the solubility of the raw material used.

[0015] Step (1) The zinc salt dissolves in the solvent, and the zinc ions (Zn) that are released are produced. 2+ It contains empty orbitals, which can form coordinate bonds with the lone pair electrons of nitrogen atoms in quaternary ammonium salts and guanidine long-chain organic antimicrobial agents, or with the lone pair electrons of oxygen atoms in the hydroxyl (-OH) and carboxyl (-COOH) functional groups of other long-chain organic antimicrobial agents, to prepare zinc ion-loaded long-chain antimicrobial agents. Furthermore, through the coordinate bonds of zinc ions, the antibacterial activity of long-chain organic compounds is enhanced.

[0016] Step (2) involves adding methyl carbamate to the mixture from step (1) to initiate a reaction. For long-chain organic antimicrobial agents that do not contain hydroxyl or carboxyl groups, the nitrogen atom in its molecular structure is located in the zinc ion (Zn) group. 2+ Activation through coordination enhances the polarity of the CH bond at active carbon sites (such as benzyl α-carbon, alkyl C-6 or C-8 position) on long carbon chains. The amino group (-NH2) of methyl carbamate acts as a nucleophile, attacking the aforementioned active carbon sites through nucleophilic substitution reactions to form stable CN bonds, thus achieving the directional introduction of the amino group. For zinc-loaded long carbon chain antimicrobial agents containing hydroxyl (-OH) and carboxyl (-COOH) functional groups, methyl carbamate introduces the amino group (-NH2) through ammonolysis reactions with the functional groups.

[0017] A method for preparing an antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additive includes the following steps: wet-milling a zinc-based catalytic decomposition agent to a particle size of 500nm-2000nm, adding it to a zinc ion amino long-chain antimicrobial agent solution, stirring at 70-90℃ for 30-60 minutes, and naturally cooling to obtain the antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additive.

[0018] The preparation method of impregnated paper involves the following steps: (a) adding antibacterial, antiviral, mildew-resistant, formaldehyde-removing, and TVOC-removing additives to melamine-formaldehyde resin and stirring thoroughly to obtain a mixed solution; adjusting the curing time of the mixed solution to 330-360 seconds using a curing agent; (b) impregnating the printing base paper with melamine-modified urea-formaldehyde resin and drying it with hot air at 100-105℃ for about 30-35 seconds to obtain paper ①; (c) coating the mixed solution from step (a) onto the surface of paper ① with a coating amount of 60-70 g / m². 2 Melamine-formaldehyde resin is coated on the bottom surface of paper ① and dried with hot air at 135-140℃ for about 45-50 seconds to obtain impregnated film paper with antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing functions.

[0019] Preferably, the amount of antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additives added in step (a) is 5%; the curing agent can be a strong acid and weak base salt such as ammonium chloride.

[0020] The method for preparing decorative artificial boards is to hot press impregnated paper and substrate together.

[0021] The aforementioned substrate is plywood, blockboard, particleboard, or oriented strand board (OSB) with a decorative finish; the hot-pressing conditions for plywood or blockboard are a hot-pressing surface pressure of 0.65-0.75 MPa / m. 2 The hot-pressing temperature is 125-140℃, and the hot-pressing time is 390-420s; the hot-pressing conditions for particleboard or oriented strand board with decorative finish are a hot-pressing surface pressure of 0.9-1.0MPa / m. 2 The hot pressing temperature is 185-195℃, and the hot pressing time is 35-40s.

[0022] This application has the following advantages over the prior art:

[0023] (1) This application provides an antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additive. Compared with other single-function or dual-function additives, it is a product with five functions in one, which can achieve five pain points in interior decoration in one step. It is convenient to add and use, and eliminates the interference and compatibility problems and complex operation problems of adding and using multiple single-function agents at the same time.

[0024] (2) The additives in this application work together with organic and inorganic substances to complement each other and enhance their effects, so that the active ingredients are consumed with low or no consumption and can be repeatedly applied. Furthermore, through the covalent bond, they can be released slowly and in a targeted manner, thus extending their service life.

[0025] (3) The antibacterial and antifungal active ingredients in this application consist of inorganic and organic substances working together. The inorganic substances ensure a long-lasting and effective effect, while the organic substances ensure a rapid inhibitory and bactericidal effect. The amino or hydroxyl groups on the long-chain antimicrobial agents contain lone pairs of electrons and form coordinate bonds with zinc ions (-NH2→Zn). 2+ This enhances the stability of zinc ions, prevents the aggregation and precipitation of inorganic zinc salts, improves the sustained-release performance of antibacterial agents, and controls the release and migration rate of active ingredients, effectively extending their action time by 300% to 500%.

[0026] (4) In this application, organic and inorganic zinc act together on microbial cells, and the bactericidal mechanism differs slightly under different pH conditions. Under neutral or acidic conditions, K... + Take H out of the cell + Introduced into cells; under alkaline conditions, K + or Mg 2+ Bring out bacterial cells, Na + It is introduced into bacterial cells. By eliminating the ion gradient for microbial cells to obtain nutrients, the cells are eventually "starved." The bactericidal mechanism differs from many antimicrobial agents. This application generates its effect through electrical polarity, not through a reaction between zinc ions and microbial cells. It kills microorganisms without being consumed itself. At a concentration of 5%, after rinsing with running water for 24 hours, its antibacterial effect against Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa still achieves an antibacterial rate >99%. Its antifungal rating against Aspergillus niger, Aspergillus terreus, Penicillium cordatum, Chaetomium globosum, Paecilomyces wani, and Brachymyces buddingii reaches level 0.

[0027] (5) The antiviral active ingredients of this application are highly active zinc ions and long-chain antimicrobial agents. The long-chain antimicrobial agents can specifically adsorb and contact with the viral envelope, and strongly bind to the negative charge (phosphate groups) of the viral envelope lipid bilayer through electrostatic interaction, thereby destroying the viral envelope (the long-chain (hydrophobic groups) can insert into the lipid bilayer of the viral envelope and interact with the hydrophobic tails of phospholipids, destroying the hydrophobic interactions between lipid molecules, leading to membrane lipid dissolution or emulsification), exposing its genetic material; highly active zinc ions can destroy nucleic acid structure and release reactive oxygen species (ROS) to cause oxidative damage. Highly active zinc ions can bind to groups such as thiol (-SH), amino (-NH2), and carboxyl (-COOH) of viral proteins, leading to changes in protein spatial structure (denaturation) or intermolecular cross-linking, resulting in loss of biological activity. Under the condition of 5% addition, the antiviral activity value for influenza A virus H3N2 (ATCC VR-1679) is >2;

[0028] (6) The polymer in this application contains a large number of amino groups, which have strong reactivity. TVOC and formaldehyde molecules can react with the amino groups on the long carbon chains and be adsorbed. The adsorbed molecules are difficult to release again. The zinc-based catalyst at room temperature can react with oxygen and water in the air under indoor light and room temperature conditions to generate electron holes and active oxygen. Under these conditions, the bound formaldehyde can be oxidized and degraded into carbon dioxide and water, and the bound TVOC can be oxidized into the corresponding organic acids. The adsorption and removal capacity of harmful substances is not only effectively increased, but also the problem of secondary pollution caused by the saturation of adsorption materials is completely solved.

[0029] (7) When the additive is added to the melamine resin of conventional impregnated paper, no additional complex addition process is required, nor is it necessary to significantly adjust the production process of impregnated paper. The resulting impregnated paper can be used for the surface finishing of particleboard, fiberboard, blockboard, plywood and other artificial boards. It can be completed by using conventional hot pressing equipment and finely adjusting the hot pressing temperature parameters. The surface physical and chemical properties of the finished product are consistent with those of conventional products, and it has antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing functions.

[0030] (8) The raw materials used in this application are low in cost. Through compounding and synergistic effects, the final additive cost is relatively low, which makes it easy to popularize and promote. Detailed Implementation

[0031] The technical solution of this application will be clearly and completely described below with reference to the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] All parts used in the embodiments and comparative examples of this application are by weight.

[0033] Example 1

[0034] (1) Raw material preparation: Weigh out 3 parts zinc chloride, 5 parts benzalkonium chloride, 5 parts methyl carbamate, 2 parts zinc isooctanoate, and 40 parts water.

[0035] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc chloride is added to water and stirred to dissolve. After stirring evenly, stirring is stopped and benzalkonium chloride is added. After stirring evenly, the temperature is raised to 80°C for reaction and kept at the temperature for 30 minutes to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0036] (3) Preparation of zinc ion amino long carbon chain antimicrobial agent: Methyl carbamate was added to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (2), the temperature was raised to 160℃, and the mixture was kept warm and stirred for 1 hour to obtain zinc ion amino long carbon chain antimicrobial agent.

[0037] (4) Preparation of antibacterial, antifungal, antiviral, formaldehyde-removing and TVOC-removing additives: Zinc isooctanoate is ground to a particle size of 500 nm, then wet-ground and added to a zinc ion amino long carbon chain antimicrobial agent solution. The temperature is raised to 70°C and stirred continuously for 35 min. The final product is obtained by natural cooling and then packaged.

[0038] Example 2

[0039] (1) Raw material preparation: Weigh out 10 parts of zinc acetate, 5 parts of dodecyl dimethyl benzyl ammonium chloride, 5 parts of decyl dimethyl ammonium chloride, 10 parts of methyl carbamate, 10 parts of basic zinc carbonate, and 50 parts of propylene glycol.

[0040] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc acetate was added to propylene glycol and stirred to dissolve. After stirring evenly, stirring was stopped and dodecyl dimethyl benzyl ammonium chloride and dicedyl dimethyl ammonium chloride were added. After stirring evenly, the temperature was raised to 90°C for reaction and kept at the temperature for 45 min to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0041] (3) Preparation of zinc ion amino long carbon chain antimicrobial agent: Methyl carbamate was added to the zinc ion loaded long carbon chain antimicrobial agent solution prepared in step (2), the temperature was raised to 170℃, and the mixture was kept warm and stirred for 1.5h to obtain zinc ion amino long carbon chain antimicrobial agent.

[0042] (4) Preparation of antibacterial, antifungal, antiviral, aldehyde-removing, and TOVC-removing additives: Basic zinc carbonate is ground to a particle size of 1000 nm, then wet-ground and added to a zinc ion amino long carbon chain antimicrobial agent solution. The temperature is raised to 80°C and stirred continuously for 40 min. The final product is obtained by natural cooling and then packaged.

[0043] Example 3

[0044] (1) Raw material preparation: Weigh 15 parts of zinc gluconate, 15 parts of polyhexamethylene guanidine, 15 parts of methyl carbamate, 15 parts of the catalyst composed of zinc isooctanoate and cobalt tetroxide, 50 parts of water, and 10 parts of glycerol.

[0045] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc gluconate was added to water and glycerol and stirred to dissolve. After stirring evenly, stirring was stopped and polyhexamethylene guanidine was added. After stirring evenly, the temperature was raised to 100℃ for reaction and kept at the temperature for 60 min to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0046] (3) Preparation of zinc ion amino long carbon chain antimicrobial agent: Methyl carbamate is added to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (2), the temperature is raised to 180℃, and the mixture is kept warm and stirred for 2 hours to obtain zinc ion amino long carbon chain antimicrobial agent.

[0047] (4) Preparation of antibacterial, antifungal, antiviral, aldehyde-removing, and TOVC-removing additives: Zinc salt and other metal composite catalysts are ground to a particle size of 1500 nm, then wet-ground and added to a zinc ion amino long carbon chain antimicrobial agent solution. The temperature is raised to 90°C and stirred continuously for 45 min. The final product is obtained by natural cooling and then packaged.

[0048] Example 4

[0049] (1) Raw material preparation: Weigh 10 parts of zinc lactate, 5 parts of zinc citrate, 10 parts of chlorhexidine, 20 parts of octylphenol polyoxyethylene ether, 20 parts of methyl carbamate, 20 parts of basic zinc carbonate and manganese dioxide composite catalyst, and 90 parts of polyethylene glycol.

[0050] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc lactate and zinc citrate were added to polyethylene glycol and stirred to dissolve. After stirring evenly, stirring was stopped and octylphenol polyoxyethylene ether and chlorhexidine were added. After stirring evenly, the temperature was raised to 100℃ for reaction and kept at the temperature for 60 min to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0051] (3) Preparation of zinc ion amino long carbon chain antimicrobial agent: Methyl carbamate was added to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (2), the temperature was raised to 180℃, and the mixture was kept warm and stirred for 2 hours to obtain zinc ion amino long carbon chain antimicrobial agent.

[0052] (4) Preparation of antibacterial, antifungal, antiviral, aldehyde-removing, and TOVC-removing additives: Zinc salt and other metal composite catalysts are ground to a particle size of 500 nm, then wet-ground and added to a zinc ion amino long carbon chain antimicrobial agent solution. The temperature is raised to 90°C and stirred continuously for 45 min. The final product is obtained by natural cooling and then packaged.

[0053] Comparative Example 1

[0054] (1) Raw material preparation: Weigh out 3 parts zinc chloride, 5 parts benzalkonium chloride, 2 parts zinc isooctanoate, and 40 parts water.

[0055] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc chloride is added to water and stirred to dissolve. After stirring evenly, stirring is stopped and benzalkonium chloride is added. After stirring evenly, the temperature is raised to 80°C for reaction and kept at the temperature for 30 minutes to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0056] (3) Preparation of antibacterial, antifungal, antiviral, aldehyde-removing and TOVC-removing additives: Zinc isooctanoate is ground to a particle size of 500 nm, then wet-ground and added to a solution of zinc-loaded long carbon chain antimicrobial agent. The temperature is raised to 70°C and stirred continuously for 35 min. The final product is obtained by natural cooling and then packaged.

[0057] Comparative Example 2

[0058] (1) Raw material preparation: Weigh out 3 parts zinc chloride, 5 parts benzalkonium chloride, 5 parts methyl carbamate, and 40 parts water.

[0059] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc chloride is added to water and stirred to dissolve. After stirring evenly, stirring is stopped and benzalkonium chloride is added. After stirring evenly, the temperature is raised to 80°C for reaction and kept at the temperature for 30 minutes to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0060] (3) Preparation of zinc ion amino long carbon chain antimicrobial agent: Methyl carbamate was added to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (2), the temperature was raised to 160℃, and the mixture was kept warm and stirred for 1 hour to obtain zinc ion amino long carbon chain antimicrobial agent.

[0061] Comparative Example 3

[0062] (1) Raw material preparation: Weigh out 3 parts zinc chloride, 5 parts benzalkonium chloride, 5 parts methyl carbamate, 2 parts zinc isooctanoate, and 40 parts water.

[0063] (2) Preparation of zinc ion-loaded long carbon chain antimicrobial agent: Zinc chloride is added to water and stirred to dissolve. After stirring evenly, stirring is stopped and benzalkonium chloride is added. After stirring evenly, the temperature is raised to 80°C for reaction and kept at the temperature for 30 minutes to obtain zinc ion-loaded long carbon chain antimicrobial agent for later use.

[0064] (3) Preparation of zinc ion amino long carbon chain antimicrobial agent: Methyl carbamate was added to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (2), the temperature was raised to 160℃, and the mixture was kept warm and stirred for 1 hour to obtain zinc ion amino long carbon chain antimicrobial agent.

[0065] (4) Preparation of antibacterial, antifungal, antiviral, aldehyde-removing and TOVC-removing additives: Zinc isooctanoate is directly added to the zinc ion amino long carbon chain antimicrobial agent solution, heated to 70℃ and stirred continuously for 35 minutes, and naturally cooled to obtain the final product, which is then packaged to obtain the finished product.

[0066] Test examples: antibacterial, antifungal, antiviral, formaldehyde removal, and TOVC removal tests.

[0067] The antibacterial performance test was conducted according to JC / T 2039—2010 "Antibacterial and Mildew-resistant Wood Decorative Board"; the mildew-resistant performance test was conducted according to JC / T 2039—2010 "Antibacterial and Mildew-resistant Wood Decorative Board"; the antiviral performance test was conducted according to ISO 21702:2019 "Measurement of antiviral activity on plastics and other nonporous surfaces"; the formaldehyde removal performance test was conducted according to JC / T 1074-2021 "Purification Performance of Functional Coating Materials for Indoor Air Purification"; and the TVOC removal performance test was conducted according to QB / T2761-2024 "Determination Method of Purification Effect of Indoor Air Purification Products".

[0068] Preparation of impregnated paper:

[0069] (a) The antibacterial, antifungal, antiviral, formaldehyde-removing, and TOVC-removing additives prepared in the examples and comparative examples of this application were added to melamine-formaldehyde resin at a ratio of 5%, and the mixture was stirred thoroughly to obtain a mixed solution. The curing time of the mixed solution was adjusted to 350s using ammonium chloride curing agent; (b) The printing base paper was impregnated with melamine-modified urea-formaldehyde resin and dried with hot air at 105℃ for about 30s to obtain paper ①; (c) The mixed solution from step (a) was coated on the surface of paper ① with a coating amount of 65g / m². 2 Melamine-formaldehyde resin is coated on the bottom surface of paper ① and dried with hot air at 135℃ for about 50 seconds to obtain impregnated film paper with antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing functions.

[0070] Both the melamine-formaldehyde resin and the melamine-modified urea-formaldehyde resin are from Linyi Jiangyuan Decoration Materials Co., Ltd.

[0071] Preparation of decorative artificial boards:

[0072] The impregnated film paper obtained above and E respectively NF The particleboard substrate is hot-pressed under the following conditions: hot-pressing surface pressure 0.9 MPa / m. 2 The hot pressing temperature is 190℃ and the hot pressing time is 40s.

[0073] The antibacterial properties of the finished engineered wood panels obtained after applying the additives in each embodiment and comparative example were tested. The antibacterial effects were statistically analyzed, and the results were calculated based on the antibacterial rate. The results are shown in Table 1 below:

[0074] Table 1

[0075]

[0076]

[0077] The anti-mold performance of the finished engineered wood panels obtained after applying the additives in each embodiment and comparative example was tested. The samples were placed in a mold environment and cultured for 28 days to observe the mold growth. The results are shown in Table 2.

[0078] Table 2

[0079]

[0080] The antiviral performance of the finished engineered wood panels obtained after applying additives in each embodiment and comparative example was tested. Influenza viruses H1N1 and H3N2 were used as model viruses. After the samples were contacted with the virus suspension for a certain period, the number of surviving bacteriophages was detected, and the antiviral activity rate was calculated. The results are shown in Table 3.

[0081] Table 3

[0082] Sample H1N1 H3N2 Example 1 ＞99.9％ ＞99.9％ Example 2 ＞99.9％ ＞99.9％ Example 3 ＞99.9％ ＞99.9％ Example 4 ＞99.9％ ＞99.9％ Comparative Example 1 90.10％ 82.60％ Comparative Example 2 80.30％ 71.30％ Comparative Example 3 81.50％ 75.20％

[0083] The formaldehyde removal performance of the finished engineered wood panels obtained after applying additives in each embodiment and comparative example was tested. Samples were placed in a sealed chamber, and a certain concentration of formaldehyde gas was injected. After 24 hours, the formaldehyde concentration inside the chamber was measured, and the formaldehyde removal rate was calculated. The above steps were repeated for a total of three experimental cycles. The formaldehyde concentration inside the sample chamber after each experimental cycle was analyzed, and the formaldehyde removal persistence (R3) was calculated. The results are shown in Table 4.

[0084] Table 4

[0085] Sample Formaldehyde Purification Efficiency Purification Durability R3 Example 1 82.3％ 74.2％ Example 2 81.4％ 72.5％ Example 3 83.6％ 75.0％ Example 4 82.4％ 74.6％ Comparative Example 1 57.2％ 49.4％ Comparative Example 2 35.6％ 28.9％ Comparative Example 3 46.3％ 37.1％

[0086] The TVOC removal performance of the finished engineered wood panels obtained after applying additives in each embodiment and comparative example was tested. The samples were placed in a sealed chamber, and a certain concentration of TVOC gas was injected. After 24 hours, the formaldehyde concentration in the chamber was measured, and the TVOC purification rate was calculated. The results are shown in Table 5.

[0087] Table 5

[0088] Sample TVOC Purification Rate Example 1 66.2％ Example 2 62.5％ Example 3 68.6％ Example 4 64.6％ Comparative Example 1 23.1％ Comparative Example 2 22.1％ Comparative Example 3 12.3％

[0089] The test results above show that the additives in Examples 1-4, when used to prepare engineered wood products, resulted in good performance in antibacterial, antifungal, antiviral, formaldehyde removal, and TOVC removal. However, the comparative examples lacked a certain component, resulting in a lack of synergistic effect, and therefore their performance was not as good as the examples.

[0090] The technical solution of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application, including the best mode, and also to enable any person skilled in the art to practice this application. It should be noted that for those skilled in the art, several improvements and modifications can be made to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application. The scope of patent protection of this application is defined by the claims and may include other embodiments that can be conceived by those skilled in the art. If these other embodiments have structural elements that are not different from the textual expression of the claims, or if they include equivalent structural elements that are not substantially different from the textual expression of the claims, then these other embodiments should also be included within the scope of the claims. For those skilled in the art, it is understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, and the scope of this application is defined by the appended claims and their equivalents.

Claims

1. An antibacterial, antiviral, antifungal, formaldehyde-removing, and TVOC-removing additive, characterized in that: Including zinc-ion amino long-chain antimicrobial agents, zinc-based catalytic decomposition agents, and solvents; The zinc ion-loaded amino long-chain antimicrobial agent is obtained by reacting zinc salt with a long-chain organic antimicrobial agent in an aqueous solution to obtain a zinc ion-loaded long-chain antimicrobial agent, followed by the addition of methyl carbamate. It is obtained through nucleophilic substitution or ammonolysis; The weight proportions of each raw material are as follows:

2. The antibacterial, antiviral, antifungal, formaldehyde-removing, and TVOC-removing additive according to claim 1, characterized in that, The zinc ion amino long carbon chain antimicrobial agent is obtained through the following preparation process: (1) Add the long carbon chain organic antimicrobial agent to the zinc salt solution, stir thoroughly for 20-30 minutes until uniform, then raise the temperature to 80℃-100℃ for reaction, keep the temperature for 30-60 minutes to fully react, and obtain the zinc ion loaded long carbon chain antimicrobial agent; (2) Add methyl carbamate to the zinc ion loaded long carbon chain antimicrobial agent solution obtained in step (1), raise the temperature to 160℃-180℃, and keep the temperature and stir for 1-2 hours to obtain the zinc ion amino long carbon chain antimicrobial agent.

3. The antibacterial, antiviral, antifungal, formaldehyde-removing, and TVOC-removing additive according to claim 1, characterized in that: The zinc salt is any one or a mixture of two or more of zinc chloride, zinc acetate, zinc gluconate, zinc citrate, zinc lactate, and zinc sulfate in any proportion; the long-chain organic antimicrobial agent is at least one of quaternary ammonium salt antimicrobial agents, guanidine antimicrobial agents, and phenolic antimicrobial agents.

4. The antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additive according to claim 1, characterized in that: The zinc-based catalytic decomposition agent is at least one of zinc isooctanoate, basic zinc carbonate, zinc salt and other metal composite catalysts; the mass ratio of the zinc-based catalytic decomposition agent to methyl carbamate is 1:(1-2.5).

5. The antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additive according to claim 1, characterized in that: The solvent is at least one of water, propylene glycol, glycerol, dimethyl sulfoxide, isopropanol, ethanol, polypropylene glycol, polyethylene glycol, and ethylene glycol.

6. A method for preparing an antibacterial, antiviral, antifungal, formaldehyde-removing, and TVOC-removing additive according to any one of claims 1-5, characterized in that, The process includes the following steps: wet milling the zinc-based catalytic decomposition agent to a particle size of 500nm-2000nm, adding it to a zinc ion amino long-chain antimicrobial agent solution, stirring at 70-90℃ for 30-60 minutes, and then naturally cooling to obtain an antibacterial, antiviral, mildew-proof, formaldehyde-removing, and TVOC-removing additive.

7. A method for preparing impregnated adhesive film paper, characterized in that, The following process was used to obtain the following solution: (a) Antibacterial, antiviral, mildew-resistant, formaldehyde-removing, and TVOC-removing additives were added to melamine-formaldehyde resin and stirred thoroughly to obtain a mixed solution; (b) Printing paper was impregnated with melamine-modified urea-formaldehyde resin and dried with hot air at 100-105℃ for about 30-35 seconds to obtain paper ①; (c) The mixed solution from step (a) was coated onto the surface of paper ① with a coating amount of 60-70 g / m². 2 Melamine-formaldehyde resin is coated on the bottom surface of paper ① and dried with hot air at 135-140℃ for about 45-50 seconds to obtain impregnated film paper with antibacterial, antiviral, mildew-proof, formaldehyde-removing and TVOC-removing functions.

8. The method for preparing impregnated film paper according to claim 7, characterized in that: The curing time of the mixed solution in step (a) needs to be adjusted to 330s to 360s by adding a curing agent.

9. A method for preparing decorative engineered wood panels, characterized in that: The impregnated paper and the substrate are hot-pressed to obtain an impregnated paper-faced artificial board; the impregnated paper is the impregnated paper obtained by the preparation method of claim 7.

10. The method for preparing decorative artificial board according to claim 9, characterized in that: The substrate is plywood, blockboard, particleboard, or oriented strand board (OSB) with a decorative finish; the hot-pressing conditions for the plywood or blockboard are a hot-pressing surface pressure of 0.65-0.75 MPa / m. 2 The hot-pressing temperature is 125-140℃, and the hot-pressing time is 390-420s; the hot-pressing conditions for particleboard or oriented strand board with decorative finish are a hot-pressing surface pressure of 0.9-1.0MPa / m. 2 The hot pressing temperature is 185-195℃, and the hot pressing time is 35-40s.

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