A preparation method of antibacterial wood product and an antibacterial wood product

Abstract

The present invention provides a method for preparing an antibacterial wood product and an antibacterial wood product, comprising the following steps: S1: corona treatment of a wood product not coated with a coating; S2: soaking the wood product after the corona treatment in an antibacterial waterproof wood paint, wherein the antibacterial waterproof wood paint comprises tea polyphenols and a quaternary ammonium salt solution; S3: taking out the soaked wood product and placing it vertically to dry. The present invention rearranges the molecular structure on the surface of the wood product through corona pretreatment, produces more polar parts, increases the adsorption effect of the subsequent antibacterial waterproof wood paint, and makes the antibacterial and waterproof effect of the wood product more durable. The antibacterial waterproof wood paint comprises tea polyphenols and a quaternary ammonium salt solution, belongs to an environmentally friendly antibacterial agent that does not contain heavy metals, has better antibacterial properties and higher safety, and the quaternary ammonium salt and tea polyphenol are used together to achieve a better antibacterial effect.

Description

Technical Field

[0001] The invention relates to the field of wood product preparation, and in particular to a preparation method of an antibacterial wood product and an antibacterial wood product. Background Art

[0002] Wood products have beautiful texture, naturalness, environmental protection and renewability, and are widely used in various fields. However, the naturalness of wood products also makes them susceptible to corrosion and fungus.

[0003] At present, wood products on the market are usually coated with antiseptic and antibacterial wood paint to prevent wood products from being corroded by bacteria. However, in actual use, the antibacterial properties of wood products are not long-lasting. After a period of time, the antibacterial properties of wood products decrease, and they are still prone to carry a variety of viruses and bacteria.

[0004] At the same time, users have increasingly higher requirements for the safety of wood products, and the choice of antibacterial agents for wood products is closely related to the safety of wood products.

[0005] Therefore, it is of great significance to invent a method for preparing an antibacterial wood product with long-lasting antibacterial properties and high safety. Summary of the invention

[0006] The first object of the present invention is to provide a method for preparing an antibacterial wood product, which is used to solve the problem that the antibacterial performance of existing wood products is not durable, while ensuring the safety of the use of the wood products.

[0007] The second object of the present invention is to provide an antibacterial wood product, which is a wood product prepared by the above-mentioned method for preparing an antibacterial wood product.

[0008] In order to achieve the above-mentioned first object, the present invention provides a method for preparing an antibacterial wood product, comprising the following steps:

[0009] S1: Corona treatment of wood products;

[0010] S2: Soak the corona-treated wood products in an antibacterial and waterproof wood paint, which contains tea polyphenols and a quaternary ammonium salt solution. The quaternary ammonium salt solution includes isopropyl alcohol, didecyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, and dioctyl dimethyl ammonium chloride;

[0011] S3: Take out the soaked wooden products and place them vertically to dry.

[0012] As can be seen from the above scheme, first, the wood products without coating are subjected to corona pretreatment, so that the molecular structure of the wood product surface is rearranged, more polar parts are produced, and the adsorption effect of the subsequent antibacterial and waterproof wood paint is increased, so that the antibacterial and waterproof effect of the wood product is more durable. The wood products treated with corona are placed in the waterproof wood paint and soaked, which is more uniformly penetrated than the coating, and the wood products can obtain better antibacterial and waterproof performance. The antibacterial and waterproof wood paint comprises tea polyphenols and quaternary ammonium salt solution, which belongs to an environmentally friendly antibacterial agent that does not contain heavy metals, and the safety is also higher while the antibacterial property is better. At the same time, quaternary ammonium salt and tea polyphenol are used together, which can play a better antibacterial effect, and compared with being used alone, a variety of bacteria have a better inhibitory effect. Several quaternary ammonium salts in this scheme are body-contactable antibacterial agents, which are non-toxic and harmless to the human body, and the safety of the use of wood products is guaranteed.

[0013] A further solution is that before step S2, an antibacterial and waterproof wood paint is prepared, and the preparation method of the antibacterial and waterproof wood paint is:

[0014] S21: adding quaternary ammonium salt solution to the waterproof wood paint and stirring evenly;

[0015] S22: adding tea polyphenol powder to the uniformly stirred waterproof wood paint and stirring;

[0016] S23: Filter the waterproof wood lacquer stirred in step S22 to obtain antibacterial waterproof wood lacquer.

[0017] As can be seen from the above scheme, quaternary ammonium salt solutions have good antistatic and bactericidal effects, but they themselves have a pungent taste and may cause certain irritation to human eyes, skin, etc. Tea polyphenols is the general name for polyphenols in tea leaves, which have multiple functions such as eliminating harmful free radicals, anti-aging, anti-oxidation, antibacterial, anti-cancer, improving cardiovascular health, and radiation protection. Adding tea polyphenols after adding quaternary ammonium salt solutions can well cover the pungent taste of wood paint and enhance the user experience. At the same time, tea polyphenols also have multiple functions and can be applied to many types of wood products.

[0018] A further solution is that in step S21, the quaternary ammonium salt solution includes 100 parts of isopropyl alcohol, 5-20 parts of didecyldimethylammonium chloride, 5-20 parts of dodecyldimethylbenzylammonium chloride, and 5-20 parts of distearyldimethylammonium chloride.

[0019] It can be seen from the above scheme that the quaternary ammonium salt mixed solution obtained by the above proportion configuration has excellent antibacterial effect.

[0020] A further solution is that in step S21, the waterproof wood paint includes butyl acetate, perfluoromethylcyclopentane and perfluoroalkyl acrylate polymer, wherein butyl acetate is a solvent, and the effective components are 80% to 98% perfluoromethylcyclopentane and 2% to 20% perfluoroalkyl acrylate polymer.

[0021] It can be seen from the above scheme that the wood paint containing the above solvent and effective ingredients has a larger hydrophobic angle and a better waterproof effect.

[0022] A further solution is that in step S21, the usage ratio of the waterproof wood paint and the quaternary ammonium salt solution is 6 ml to 15 ml of the quaternary ammonium salt solution added to 1 L of the waterproof wood paint.

[0023] It can be seen from the above scheme that the content of quaternary ammonium salt solution added to waterproof wood paint is small and the cost is low. When the wooden products are corona treated, even a small amount of quaternary ammonium salt solution can also play an excellent and lasting antibacterial effect.

[0024] A further solution is that step S21 further includes: adding 1 ml to 5 ml of essence and quaternary ammonium salt solution into 1 L of waterproof wood paint and stirring evenly.

[0025] It can be seen from the above scheme that the addition of fragrance can make the wooden products smell fresher, and users can customize wooden products with different flavors according to their preferences.

[0026] A further solution is that in step S22, the usage ratio of the waterproof wood lacquer and the tea polyphenol powder is 10 g to 30 g of the tea polyphenol powder added to 1 L of the waterproof wood lacquer.

[0027] It can be seen from the above scheme that the content of tea polyphenols added to waterproof wood paint is small and the cost is low. When the wooden products are corona treated, even a small amount of tea polyphenols can have an excellent and lasting antibacterial effect.

[0028] A further solution is that the specific method of corona treatment in step S1 is to pass the wooden product through a corona machine to perform corona treatment on all outer surfaces of the wooden product.

[0029] It can be seen from the above scheme that all outer surfaces of wooden products are subjected to corona treatment, so that the adsorption effect of subsequent antibacterial and waterproof wood paint is better and the antibacterial effect is more lasting.

[0030] A further solution is that the soaking time in step S2 is 1 min to 5 min.

[0031] It can be seen from the above scheme that the preparation method of the antibacterial wooden card of the present invention is simple to operate, and after corona pretreatment, only a short soaking time is required to achieve excellent and lasting antibacterial effect, with high efficiency and low cost.

[0032] In order to achieve the above second objective, the present invention provides an antibacterial wood product which is prepared by the method for preparing an antibacterial wood product of any of the above schemes.

[0033] A further solution is that the wooden products in the above solution include wooden cards, wooden floors, wooden articles and other common wooden products in life.

[0034] It can be seen from the above scheme that the wooden products prepared by the above method are highly safe to use and have a long-lasting antibacterial effect. DETAILED DESCRIPTION

[0035] The present invention provides a method for preparing an antibacterial wood product, comprising the following steps:

[0036] S1: Corona treatment of wood products;

[0037] S2: Soak the corona-treated wood products in antibacterial and waterproof wood paint for 1 to 5 minutes. The antibacterial and waterproof wood paint contains tea polyphenols and quaternary ammonium salt solution;

[0038] S3: Take out the soaked wooden products and place them vertically to dry.

[0039] The steps of preparing antibacterial and waterproof wood paint before step S2 are as follows:

[0040] S21: Add 6 ml to 15 ml of quaternary ammonium salt solution to 1 L of waterproof wood paint and stir evenly;

[0041] S22: adding 10 g to 30 g of tea polyphenol powder to the uniformly stirred waterproof wood paint and stirring;

[0042] S23: Filter the waterproof wood lacquer stirred in step S22 to obtain antibacterial waterproof wood lacquer.

[0043] The quaternary ammonium salt solution comprises 100 parts of isopropyl alcohol, 5-20 parts of didecyldimethylammonium chloride, 5-20 parts of dodecyldimethylbenzylammonium chloride and 5-20 parts of bis-octyldimethylammonium chloride.

[0044] The waterproof wood paint comprises butyl acetate, perfluoromethylcyclopentane and perfluoroalkyl acrylate polymer, wherein butyl acetate is a solvent, and the effective components are 80% to 98% perfluoromethylcyclopentane and 2% to 20% perfluoroalkyl acrylate polymer.

[0045] Step S21 also includes: adding 1 ml to 5 ml of essence and 6 ml to 15 ml of quaternary ammonium salt solution into 1 L of waterproof wood paint and stirring evenly.

[0046] The wooden products in the present invention include wooden cards, wooden floors, wooden articles and other common wooden products in life.

[0047] The present invention is further described below in conjunction with the examples. The wooden products prepared in all the following examples and comparative examples are wooden cards.

[0048] Example 1

[0049] The preparation steps of the antibacterial and waterproof wood paint in this embodiment include:

[0050] S21: Add 6 ml of quaternary ammonium salt solution and 1 ml of essence to 1 L of waterproof wood paint and stir evenly, wherein the waterproof wood paint is a waterproof wood paint whose solvent is butyl acetate, and whose effective ingredients are 80% to 98% of perfluoromethylcyclopentane and 2% to 20% of perfluoroalkyl acrylate polymer, and the quaternary ammonium salt solution includes 100 parts of isopropyl alcohol, 20 parts of didecyldimethylammonium chloride, 5 parts of dodecyldimethylbenzylammonium chloride, and 5 parts of dioctyldimethylammonium chloride;

[0051] S22: adding 10 g of tea polyphenol powder to the uniformly stirred waterproof wood paint, and stirring with an electric stirrer for 3 minutes;

[0052] S23: Filter the waterproof wood paint stirred in step S22 to obtain antibacterial waterproof wood paint 1.

[0053] The preparation method of the antibacterial wooden card of this embodiment is:

[0054] S1: The wooden card is passed through the corona machine and the front and back sides are corona treated;

[0055] S2: Soak the corona-treated wood card in antibacterial and waterproof wood paint for 1 min;

[0056] S3: taking out the soaked wooden card and placing it vertically to dry, to obtain the antibacterial wooden card of Example 1.

[0057] Comparative Example 1

[0058] The antibacterial and waterproof wood paint used in this comparative example is the same as that in Example 1.

[0059] The preparation method of the antibacterial wood card of this comparative example is:

[0060] S1: Soak the wooden card in antibacterial and waterproof wood paint for 1 minute;

[0061] S2: taking out the soaked wooden card and placing it vertically to dry, to obtain the antibacterial wooden card of comparative example 1.

[0062] Comparative Example 2

[0063] The preparation steps of the antibacterial and waterproof wood paint II in this comparative example include:

[0064] S21: adding 10 g of nano silver powder to 1 L of waterproof wood paint, and stirring with an electric stirrer for 3 minutes, wherein the waterproof wood paint is a waterproof wood paint whose solvent is butyl acetate and whose effective ingredients are 80% to 98% of perfluoromethylcyclopentane and 2% to 20% of perfluoroalkyl acrylate polymer;

[0065] S22: Filter the waterproof wood paint stirred in step S21 to obtain antibacterial waterproof wood paint 2.

[0066] The preparation method of the antibacterial wood card of this comparative example is:

[0067] S1: The wooden card is passed through the corona machine and the front and back sides are corona treated;

[0068] S2: Soak the corona-treated wooden card in antibacterial and waterproof wood paint II for 1 min;

[0069] S3: Take out the soaked wooden card and place it vertically to dry, to obtain the second antibacterial wooden card of comparative example.

[0070] Comparative Example 3

[0071] The preparation steps of the antibacterial and waterproof wood paint three in this comparative example include:

[0072] S21: Add 6 ml of quaternary ammonium salt solution and 1 ml of essence to 1 L of waterproof wood paint and stir evenly, wherein the waterproof wood paint is a waterproof wood paint whose solvent is butyl acetate, and whose effective ingredients are 80% to 98% of perfluoromethylcyclopentane and 2% to 20% of perfluoroalkyl acrylate polymer, and the quaternary ammonium salt solution includes 100 parts of isopropyl alcohol, 20 parts of didecyldimethylammonium chloride, 5 parts of dodecyldimethylbenzylammonium chloride, and 5 parts of distearyldimethylammonium chloride, to obtain antibacterial waterproof wood paint three.

[0073] The preparation method of the antibacterial wood card of this comparative example is:

[0074] S1: The wooden card is passed through the corona machine and the front and back sides are corona treated;

[0075] S2: Soak the corona-treated wood card in antibacterial and waterproof wood paint three for 1 min;

[0076] S3: Take out the soaked wooden card and place it vertically to dry, to obtain the third antibacterial wooden card of comparative example.

[0077] Comparative Example 4

[0078] The preparation steps of the antibacterial and waterproof wood paint four in this comparative example include:

[0079] S21: adding 1 ml of essence to 1 L of waterproof wood paint and stirring evenly, wherein the waterproof wood paint is a waterproof wood paint whose solvent is butyl acetate and whose effective ingredients are 80% to 98% of perfluoromethylcyclopentane and 2% to 20% of perfluoroalkyl acrylate polymer;

[0080] S22: adding 10 g of tea polyphenol powder to the uniformly stirred waterproof wood paint, and stirring with an electric stirrer for 3 minutes;

[0081] S23: Filter the waterproof wood paint stirred in step S22 to obtain antibacterial waterproof wood paint four.

[0082] The preparation method of the antibacterial wood card of this comparative example is:

[0083] S1: The wooden card is passed through the corona machine and the front and back sides are corona treated;

[0084] S2: Soak the corona-treated wood card in antibacterial and waterproof wood paint IV for 1 min;

[0085] S3: taking out the soaked wooden card and placing it vertically to dry, to obtain the antibacterial wooden card of comparative example 4.

[0086] Comparative Example 5

[0087] The preparation steps of the antibacterial and waterproof wood paint five in this comparative example include:

[0088] S21: add 6 ml of quaternary ammonium salt solution and 1 ml of essence to 1 L of waterproof wood paint and stir evenly, wherein the waterproof wood paint is a commercially available Dulux Muyun series waterproof varnish (the solvent is water, and the active ingredients are acrylic acid and polyurethane), and the quaternary ammonium salt solution includes 100 parts of isopropyl alcohol, 20 parts of didecyl dimethyl ammonium chloride, 5 parts of dodecyl dimethyl benzyl ammonium chloride, and 5 parts of dioctyl dimethyl ammonium chloride;

[0089] S22: adding 10 g of tea polyphenol powder to the uniformly stirred waterproof wood paint, and stirring with an electric stirrer for 3 minutes;

[0090] S23: Filter the waterproof wood paint stirred in step S22 to obtain antibacterial waterproof wood paint five.

[0091] The preparation method of the antibacterial wood card of this comparative example is:

[0092] S1: The wooden card is passed through the corona machine and the front and back sides are corona treated;

[0093] S2: Soak the corona-treated wooden card in antibacterial and waterproof wood paint for 1 min;

[0094] S3: taking out the soaked wooden card and placing it vertically to dry, to obtain the antibacterial wooden card of comparative example 5.

[0095] According to ISO 22196-2011 standard, antibacterial tests were performed on Example 1 and Comparative Examples 1 to 4, wherein Example 1 and Comparative Examples 2 to 4 were tested for antibacterial effects within 24 hours of card making, and Example 1 and Comparative Example 1 were tested for antibacterial effects after 60 days of card making.

[0096] The test method is: set up a blank control group, the blank control group is a blank control sample provided by Zanyu Laboratory, PP without antibacterial treatment, and the cutting size is 5*5cm; the embodiment and comparative example are sterilized by ultraviolet light irradiation for 30 minutes, and the covering film size is 4*4cm and the thickness is 0.1mm.

[0097] The antibacterial test results of Example 1 and Comparative Examples 2 to 4 within 24 hours of card making are shown in Table 1, and the antibacterial test results of Example 1 and Comparative Example 1 after 60 days of card making are shown in Table 2.

[0098] Table 1

[0099]

[0100] It can be concluded from Table 1 that the antibacterial and waterproof wood lacquer of Example 1 contains tea polyphenols and quaternary ammonium salt solution, and has excellent antibacterial effects on Escherichia coli and Staphylococcus aureus. The antibacterial effect component of the antibacterial and waterproof wood lacquer of Comparative Example 2 is nanosilver, and the antibacterial effects on Escherichia coli and Staphylococcus aureus are poor, not as good as Example 1. The antibacterial and waterproof wood lacquer of Comparative Example 3 does not contain tea polyphenols, and has a poor antibacterial effect on Staphylococcus aureus, and is also not as good as Example 1 for Escherichia coli. The antibacterial and waterproof wood lacquer of Comparative Example 4 does not contain quaternary ammonium salt solution, and has a poor antibacterial effect on Staphylococcus aureus, and is also not as good as Example 1 for Escherichia coli.

[0101] Table 2

[0102]

[0103] It can be concluded from Table 1 that the wooden card treated with corona in Example 1 has good adhesion to antibacterial wood paint, and still has good antibacterial effect after antibacterial test 60 days after card making. Comparative Example 2 is not treated with corona, and it can be seen that the antibacterial effect is obviously not as good as that of Example 1. Therefore, the wooden card treated with corona can have a more lasting antibacterial effect.

[0104] The antibacterial wooden cards of Example 1 and Comparative Example 5 were subjected to hydrophobic angle measurement, water absorption test after soaking in water for one minute, coating thickness measurement, and appearance observation, and the results were shown in Table 3 below.

[0105] Table 3

[0106]

[0107] It can be seen from the test results in Table 3 that the waterproof wood paint solvent in Example 1 is butyl acetate, and the effective components are 80% to 98% perfluoromethylcyclopentane and 2% to 20% perfluoroalkyl acrylate polymer waterproof wood paint, and the waterproof wood paint agent in Comparative Example 5 is water, and the effective components are acrylic acid and polyurethane. Compared with Comparative Example 5, Example 1 has a larger hydrophobic angle, better waterproof effect, thinner coating thickness, less impact on the wood card itself, and a wider range of applications.

[0108] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles of the patent scope of the present invention should be included in the application scope of the present invention.

Claims

1. A method for preparing an antibacterial wood product, characterized in that: The following steps are involved: S1: Corona treatment of uncoated wood products; S2: Soaking the corona-treated wooden product in an antibacterial and waterproof wood paint, wherein the antibacterial and waterproof wood paint comprises tea polyphenols and a quaternary ammonium salt solution, wherein the quaternary ammonium salt solution comprises 100 parts of isopropyl alcohol, 5 to 20 parts of didecyl dimethyl ammonium chloride, 5 to 20 parts of dodecyl dimethyl benzyl ammonium chloride, and 5 to 20 parts of distearyl dimethyl ammonium chloride; S3: taking out the soaked wooden product and placing it vertically to dry; before step S2, the antibacterial and waterproof wood paint is prepared, and the preparation method of the antibacterial and waterproof wood paint is: S21: adding quaternary ammonium salt solution to the waterproof wood paint and stirring evenly; S22: adding tea polyphenol powder to the uniformly stirred waterproof wood paint and stirring; S23: The waterproof wood paint stirred in step S22 is filtered to obtain the antibacterial waterproof wood paint; In step S21, the waterproof wood paint includes butyl acetate, perfluoromethylcyclopentane and perfluoroalkyl acrylate polymer; In step S21, the usage ratio of the waterproof wood paint to the quaternary ammonium salt solution is 6 ml to 15 ml of the quaternary ammonium salt solution is added to 1 L of the waterproof wood paint; In step S22, the usage ratio of the waterproof wood lacquer and the tea polyphenol powder is: 10 g to 30 g of the tea polyphenol powder is added to 1 L of the waterproof wood lacquer.

2. The method for preparing an antibacterial wood product according to claim 1, characterized in that: Step S21 also includes: adding 1 ml to 5 ml of essence and the quaternary ammonium salt solution into 1 L of the waterproof wood paint and stirring evenly.

3. The method for preparing an antibacterial wood product according to claim 1 or 2, characterized in that: The specific method of the corona treatment in step S1 is to pass the wooden product through a corona machine, and perform the corona treatment on all outer surfaces of the wooden product.

4. The method for preparing an antibacterial wood product according to claim 1 or 2, characterized in that: The soaking time in step S2 is 1 min to 5 min. 5.An antibacterial wood product, characterized in that: The antibacterial wood product is an antibacterial wood product prepared by the method for preparing an antibacterial wood product according to any one of claims 1 to 4.

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