Art mirror based on acrylic material and preparation method thereof

Abstract

The invention discloses an artistic mirror based on an acrylic material and a preparation method of the artistic mirror. The artistic mirror comprises a middle PMMA layer, an aluminum coating, an upper protective layer and a lower protective layer, wherein the PMMA layer comprises an anti-aging agent and polymethyl methacrylate; the protective layer comprises a super-hydrophilic self-cleaning protective film layer structure and a protective coating of an aluminum coating. As the art mirror is made of an acrylic material, the image is clear and is not easy to break, and the use safety is greatly enhanced; a layer of high-transparency and super-hydrophilic self-cleaning protective film layer structure is attached to the surface of the artistic mirror, so that the artistic mirror is not easy to fog and stain, the composite coating has antibacterial, anti-ultraviolet and flame-retardant properties and the like due to the addition of components, the related flame-retardant property and service life requirements can be met, and the mirror is light in weight and convenient to carry and install.

Description

Technical Field

[0001] The present invention relates to the technical field of artistic furniture, and more particularly to an artistic mirror based on acrylic material and a preparation method thereof. Background Art

[0002] Acrylic is a chemical material, the chemical name is "PMMA", which belongs to the polyacrylate class, also known as specially treated organic glass, and is a replacement product for organic glass. In the application industry, the raw materials of acrylic generally appear in the form of particles, plates, pipes, etc. It includes monomers, plates, granules, resins and composite materials. Acrylic plates are polymerized from methyl methacrylate monomers, that is, polymethyl methacrylate plates organic glass. Acrylic plates have the reputation of "plastic glass", have strong corrosion resistance, and have strong surface hardness and gloss. Acrylic plates have crystal-like transparency, light transmittance of more than 92%, soft light, clear vision, and acrylic colored with dyes has a good color development effect. Acrylic plates have excellent weather resistance, high surface hardness and surface gloss, and good high temperature performance. Transparent acrylic plates have a light transmittance comparable to glass, but the density is only half of that of glass. In addition, it is not as fragile as glass, and even if it is broken, it will not form sharp fragments like glass. In addition, the wear resistance of acrylic sheets is close to that of aluminum, and it has good stability. Therefore, the application of acrylic sheets is becoming more and more extensive, especially in the fields of construction, advertising, etc. With the development and progress of society, more and more acrylic sheets have begun to enter various industries and have made great contributions.

[0003] Art mirror is a kind of decoration that combines practicality and artistry. It not only has the reflective function of ordinary mirrors, but also can add artistic atmosphere to the space through its unique design and decoration. Art mirrors have various appearances, which can be flat mirrors or mirrors with carvings, paintings or other decorations. Art mirrors are manifested in various forms in soft furnishings, which can be decorative mirrors hung on the wall or mirrors embedded in furniture. Their designs often incorporate the creativity and emotions of artists, making each mirror a unique work of art. For example, some art mirrors may be based on themes such as natural landscapes, animal forms, and human figures, and cleverly combine artistic elements with the practicality of mirrors through carvings, paintings and other techniques. In addition, the role of art mirrors in interior design cannot be ignored. It can make the interior space appear more open and profound by reflecting light and expanding the visual effect of space. At the same time, the reasonable arrangement of art mirrors can also cleverly change the home space and bring different interest and visual enjoyment to the residents.

[0004] At present, the materials of art mirrors mainly include glass, quartz, metal, polymer materials, etc., most of which are made of glass. Once the glass mirror is subjected to uneven force or impact, it is very easy to break into sharp fragments, which can easily stab the user. Therefore, there are considerable safety hazards in the use of related products. In addition, glass is usually hit by sharp objects, or when the glass is heated unevenly, it is very easy to burst and cause the entire piece of glass to break. In addition, most glass has a main chemical composition of silicon dioxide and silicate, and the mirrors of related materials have a large density. The related products are relatively heavy, which causes great inconvenience to the transportation and installation of related art mirror products, and puts forward certain requirements for the installation location. In addition, the mirror material can also be selected from metals (such as silver, aluminum, etc.) and quartz. Due to the disadvantages of high cost, the related materials are mainly used to make optical lenses. The currently commonly used polymer material art mirror products have the disadvantages of relatively low hardness, poor scratch resistance, durability, stability and other performances, and short life.

[0005] Therefore, it is necessary to design and prepare a new type of artistic mirror based on acrylic material. Summary of the invention

[0006] In view of this, the present invention provides an artistic mirror based on acrylic material and a preparation method thereof. The present invention designs a novel multilayer structure based on acrylic polymer material, and designs an artistic mirror made of acrylic material based on the multilayer structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] An artistic mirror based on acrylic material, comprising a middle PMMA layer, an aluminum coating and upper and lower protective layers;

[0009] Wherein, the PMMA layer comprises, by mass percentage: 0.01-0.04% of an anti-aging agent and the balance of polymethyl methacrylate;

[0010] The protective layer comprises: a super-hydrophilic self-cleaning protective film layer structure and a protective coating of an aluminum coating;

[0011] The super-hydrophilic self-cleaning protective film layer structure comprises, by mass percentage, 0.5-2% antioxidant, 3-5% flame retardant, 0.5-2% metal oxide nanoparticles, and the balance is polymethyl methacrylate;

[0012] The protective coating of the aluminum coating comprises, by mass percentage, 40-45% of acrylic emulsion, 20-25% of calcium bicarbonate, 3-5% of defoamer GP-330 glycerol polyether, 3-5% of waterborne polyurethane dispersant-80, and the balance is water.

[0013] Furthermore, the protective coating of the aluminum coating comprises, by mass percentage, 42% acrylic emulsion, 21% calcium bicarbonate, 4% defoamer GP-330 propylene glycol polyether, 4% water-based polyurethane dispersant-80, and 29% water.

[0014] Preferably, the anti-aging agent includes: UV-P.

[0015] Preferably, the flame retardant includes: brominated epoxy resin.

[0016] Preferably, the antioxidant includes: antioxidant 1076 or antioxidant 1010.

[0017] Preferably, the metal oxide nanoparticles include: niobium pentoxide, cerium dioxide or titanium dioxide treated with a surfactant.

[0018] It should be noted that the surfactant is hexadecyltrimethylammonium bromide or hexadecyltrimethylammonium chloride. The specific operation is to mix the nanoparticles with the surfactant and an organic solvent, remove the organic solvent by rotary evaporation, and vacuum dry to obtain the relevant product; the organic solvent is ethanol or isopropanol.

[0019] In addition, since the protective layer is compounded with semiconductor nanomaterials such as niobium pentoxide and cerium dioxide, and the related additives have anti-ultraviolet and antibacterial components, the present invention can achieve certain anti-ultraviolet and antibacterial properties, meet the relevant practical use requirements, and achieve a certain mechanical performance improvement effect. The addition of semiconductor nanomaterials achieves the comprehensive effect of anti-ultraviolet, antibacterial and mechanical performance improvement. The layered structure is prepared by a co-extrusion method, which is simple and suitable for large-scale production.

[0020] Another object of the present invention is to provide a method for preparing the above-mentioned artistic mirror based on acrylic material, comprising the following steps:

[0021] (1) Preparation of PMMA layer:

[0022] Add polymethyl methacrylate particles into the screw, start heating the reaction system to a molten state, add an anti-aging agent and mix, and keep mechanical stirring to make it evenly dispersed. After cooling, use a high-pressure extruder to extrude and mold on the surface of the PMMA layer to obtain a PMMA layer, i.e., an acrylic center plate;

[0023] (2) Composite protective layer

[0024] Adding polyurethane acrylic resin into the screw and beginning to heat it to a molten state, adding flame retardants, antioxidants, and metal oxide nanoparticles during the heating process, and after cooling, using a coating machine to form on the surface of the PMMA layer, so as to coat a layer of super-hydrophilic self-cleaning protective film layer with antibacterial, antioxidant, anti-ultraviolet, and flame retardant functions on one side of the acrylic center plate;

[0025] (3) Aluminum coating and corresponding protective coating of aluminum coating

[0026] The aluminum coating and the corresponding protective coating are sprayed on the other side of the acrylic center plate, and the specific operation is as follows:

[0027] The substrate is cleaned with an organic solvent to remove impurities, and the substrate is placed in a vacuum film coating device. The aluminum substrate is evaporated by an electron beam generated by a plasma generator. As the vacuum degree increases, the evaporated aluminum vapor is deposited as a thin film on the surface of the substrate to obtain an aluminum coating. Subsequently, the substrate is cooled to near room temperature and air is placed in the substrate to room pressure, thereby relieving substrate stress and enhancing base film bonding strength. Finally, a protective coating for the aluminum layer is obtained by rolling on the surface of the aluminum layer to obtain the mirror material of the acrylic-based artistic mirror.

[0028] Preferably, the thickness of the PMMA layer is 1.5-2.5 mm.

[0029] Preferably, the thickness of the super-hydrophilic self-cleaning protective film layer is 0.1-0.3 mm, the thickness of the aluminum coating is 0.01 mm to 0.02 mm, and the thickness of the protective coating of the aluminum coating is 120-160 nm.

[0030] It should be noted that the above-mentioned artistic mirror product containing a multi-layer structure is placed in a drying oven at 115-160° C. and dried for 30 seconds to obtain a finished artistic mirror product.

[0031] Specifically, the present invention uses an acrylic laminate with high light transmittance, and sprays an aluminum coating and a protective coating on one side of the acrylic center plate to make it reflective, while spraying a composite coating containing flame retardant, anti-ultraviolet, and antioxidant components on the other side, so that the relevant products can meet the relevant flame retardant performance requirements and service life requirements, and spray anti-reflection (anti-transmission), super-hydrophilic self-cleaning protective film layer structure (organic-inorganic hybrid coating). In addition, the appearance of the product of the present invention is designed to have a certain aesthetic appeal, can be integrated with the environment, and add an artistic atmosphere to the space.

[0032] It can be seen from the above technical solution that compared with the prior art, the present invention has the following beneficial effects:

[0033] 1) Due to the introduction of modified niobium pentoxide or other nanoparticles, the comprehensive performance of antibacterial, anti-ultraviolet and mechanical properties has been successfully improved. It has the advantages of low cost and the ability to improve multiple comprehensive properties at the same time.

[0034] 2) The artistic mirror product of the present invention has the reflective function of an ordinary mirror and also has a decorative function, and can be used as a decoration to beautify the environment. In addition, since the artistic mirror is made of acrylic material, it has clear imaging and is not easy to break. Even if it breaks, it is not easy to form sharp fragments after breaking, and it is not easy to cause the mirror surface to burst due to impact by sharp objects or uneven heating, so the safety of the relevant products during use is greatly enhanced.

[0035] 3) Since the composite structure of the art mirror of the present invention has a highly transparent, super-hydrophilic, self-cleaning protective film layer on the mirror surface, it is not easy to fog or be stained, and the composite coating contains anti-reflection (anti-reflection) components, so it can provide users with a better user experience.

[0036] 4) The flame retardant and antioxidant components in the composite coating can enable the related products to meet the relevant flame retardant performance requirements and service life requirements.

[0037] 5) The artistic mirror of the present invention is light in weight and convenient to carry and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0039] Figure 1 This is a structural diagram of the artistic mirror of the present invention;

[0040] Figure 2 Graphs of static water contact angles, where the left graph is comparative example 1 and the right graph is example 1. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The present invention specifically discloses an artistic mirror based on acrylic material and a preparation method thereof, and the specific operations are as follows:

[0043] First, a high-transparency acrylic center board production scheme was used. Polymethyl methacrylate was added to the screw, and 0.01% to 0.04% of UV-P was used as an anti-aging agent. The polymethyl methacrylate was heated until it was molten. After cooling, it was extruded using a high-pressure extruder to obtain an acrylic center board with a thickness of about 2 mm ( Figure 1 Middle layer structure 2).

[0044] Subsequently, a layer of super-hydrophilic self-cleaning protective film with antibacterial and anti-ultraviolet properties is coated on one side of the acrylic center plate to reduce the reflective ability of the art mirror surface, increase the light transmittance of related art mirror products, and improve the user experience ( Figure 1 The related method is as follows: heat the polyurethane acrylic resin particles until they are molten, add flame retardant 5% brominated epoxy resin, 0.5% antioxidant 1076, and metal oxide nanoparticles treated with hexadecyltrimethylammonium chloride that have antibacterial and anti-ultraviolet properties and can play a super-hydrophilic role, and after cooling, use a coating machine to coat the surface of structure 2 to form a film with a thickness of about 0.1~0.3 mm ( Figure 1 Middle layer structure 1).

[0045] Then, spray the aluminum coating on the other side of the acrylic center plate ( Figure 1 The middle layer structure 3) makes the acrylic sheet reflective, and then through the roll coating process and the related drying process, the protective coating of the aluminum coating is obtained on the surface of the aluminum coating ( Figure 1 Middle layer structure 4) to prevent the aluminum coating from falling off. Use organic solvent to clean the substrate, remove impurities, and place the substrate into vacuum film plating equipment. Use the electron beam generated by the plasma generator to evaporate the aluminum substrate. As the vacuum degree increases, the evaporated aluminum vapor is deposited on the surface of the substrate into a thin film with a thickness of 0.01mm~0.02mm. Cool the substrate to near room temperature and put it into air to room pressure to relieve substrate stress and enhance the bonding strength of the base film. Finally, deposit the corresponding protective layer on the surface of the aluminum layer with a thickness of about 150nm. Roll the corresponding liquid on the surface of the aluminum layer and place it in a 115-160℃ drying oven for 30 seconds to obtain the mirror product of the relevant acrylic art mirror.

[0046] In order to meet the requirements of light transmittance and material compatibility, the relevant additives mainly use organic ingredients. The specific ingredients and contents are as follows:

[0047] Components of structure 1 in the figure: related flame retardants mainly include brominated epoxy resins, with a content of 3~5%; antioxidant components are mainly antioxidants 1076 or 1010, with a content of 0.5~2%; metal oxide nanoparticles are mainly niobium pentoxide, titanium dioxide or cerium dioxide, with a content of 0.5~2%; anti-reflection components are mainly organic styrene, methyl acrylate, polyurethane, etc.

[0048] Ingredients of structure 4 in the figure: acrylic emulsion 42%, calcium bicarbonate 21%, defoamer GP-330 propylene glycol polyether 4% (CAS: 87435-55-0), water-based polyurethane dispersant 4% (CAS: 35430-88-7), water 29%.

[0049] The above-mentioned multi-layered art mirror product is placed in a drying oven at 115-160° C. and dried for 30 seconds. Finally, a PE protective film is attached to the surface of the structure 1 to make an art mirror.

[0050] Example 1

[0051] Example 1 is an artistic mirror made of acrylic material described in the present invention, the main material of which is PMMA, and its specific structure includes Figure 1 Structure 1 in (protective layer, containing 5% flame retardant brominated epoxy resin, and containing 2% semiconductor niobium pentoxide with antibacterial and antioxidant components prepared by hydrothermal synthesis and treated with hexadecyltrimethylammonium chloride). In addition, the specific structure includes Figure 1 Structure 2 (PMMA layer), structure 3 (aluminum coating), and structure 4 (protective coating of the aluminum coating).

[0052] Example 2

[0053] Example 2 is an artistic mirror made of acrylic material described in the present invention, the main material of which is PMMA, and its specific structure includes Figure 1 Structure 1 in (protective layer, containing 5% flame retardant brominated epoxy resin, and containing 0.5% semiconductor titanium dioxide nanoparticles with antibacterial and antioxidant components treated with hexadecyltrimethylammonium chloride). In addition, the specific structure includes Figure 1 Structure 2 (PMMA layer), structure 3 (aluminum coating), and structure 4 (protective coating of the aluminum coating).

[0054] Example 3

[0055] Example 3 is an artistic mirror made of acrylic material described in the present invention, the main material of which is PMMA, and its specific structure includes Figure 1 Structure 1 in (protective layer, containing 5% flame retardant brominated epoxy resin, and containing 0.5% semiconductor cerium dioxide nanoparticles with antibacterial and antioxidant components treated with hexadecyltrimethylammonium chloride). In addition, the specific structure includes Figure 1Structure 2 (PMMA layer), structure 3 (aluminum coating), and structure 4 (protective coating of the aluminum coating).

[0056] Comparative Example 1

[0057] Comparative Example 1 is a control group of ordinary PMMA polymer art mirrors, whose main material is PMMA, and its specific structure includes Figure 1 The structure 2 (PMMA layer), structure 3 (aluminum coating), and structure 4 (protective coating of the aluminum coating) are included, but structure 1 (protective layer) is not included.

[0058] Super hydrophilic performance test

[0059] The hydrophilicity of the coating was tested using the JC2000DF contact angle meter produced by Shanghai Aifeisi Precision Instrument Co., Ltd. The surface wettability of the material was quantitatively evaluated by the contact angle between the droplet and the film. A 5uL drop of water was dropped onto the film surface using a micro syringe and the contact angle was recorded. The contact angle was measured at three different points on the film and the average value was taken as the final value.

[0060] like Figure 2 As shown in (a), the ordinary PMMA art mirror of comparative example 1 which has not been treated with hexadecyltrimethylammonium chloride has a static water contact angle of about 72 degrees after testing. In actual use, it has the problem of fogging and poor self-cleaning ability.

[0061] like Figure 2 As shown in (b), the PMMA art mirror product with a specific protective layer treated with hexadecyltrimethylammonium chloride in Example 1 has a surface static water contact angle of about 7 degrees. In actual use, it can well avoid possible problems such as fogging and poor self-cleaning ability.

[0062] Transmittance (UV-vis) performance test

[0063] After testing, the ultraviolet absorption of Example 1 in the ultraviolet-visible range was significantly reduced.

[0064] Antioxidant performance test

[0065] The following table shows the light aging test results of Example 1 and Comparative Example 1.

[0066] As can be seen from the table below, the color difference of Example 1 before and after light aging is significantly reduced, which shows that Example 1 can significantly improve the antioxidant performance of the material.

[0067] ΔL Δa Δb Color change ΔE Example 1 -0.41 -0.45 0.16 0.62 Comparative Example 1 6.00 -0.34 -0.20 6.81

[0068] Flame retardant test

[0069] Relevant tests were conducted according to the fire protection grade UL94. After testing, the ordinary PMMA art mirror that has not been treated with hexadecyltrimethylammonium chloride, the relevant samples of comparative example 1 can continue to burn after ignition, and do not have flame retardant function. Example 1 PMMA art mirror products containing a specific protective layer treated with hexadecyltrimethylammonium chloride, after testing, the relevant samples can be ignited and the samples can be tested for combustion. The horizontal burning rate of the relevant samples is about 20mm / min. The relevant data can achieve the HB grade flame retardant effect. Compared with the ordinary PMMA art mirror that has not been treated with hexadecyltrimethylammonium chloride, its flame retardant effect is significantly improved.

[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An artistic mirror based on acrylic material. It is characterized in that It includes a middle PMMA layer, an aluminum coating, and upper and lower protective layers; Wherein, the PMMA layer comprises, by mass percentage: 0.01-0.04% of an anti-aging agent and the balance of polymethyl methacrylate; The protective layer comprises: a super-hydrophilic self-cleaning protective film layer structure and a protective coating of an aluminum coating; The super-hydrophilic self-cleaning protective film layer structure comprises, by mass percentage, 0.5-2% antioxidant, 3-5% flame retardant, 0.5-2% metal oxide nanoparticles, and the balance is polymethyl methacrylate; The protective coating of the aluminum coating comprises, by mass percentage, 40-45% of acrylic emulsion, 20-25% of calcium bicarbonate, 3-5% of defoamer GP-330 glycerol polyether, 3-5% of waterborne polyurethane dispersant-80, and the balance is water.

2. The acrylic-based art mirror according to claim 1, It is characterized in that The anti-aging agent includes: UV-P.

3. The acrylic-based art mirror according to claim 1, It is characterized in that The flame retardant includes brominated epoxy resin.

4. The acrylic-based art mirror according to claim 1, It is characterized in that The antioxidant includes: antioxidant 1076 or antioxidant 1010.

5. The acrylic-based art mirror according to claim 1, It is characterized in that The metal oxide nanoparticles include niobium pentoxide, cerium dioxide or titanium dioxide treated with a surfactant.

6. A method for preparing an artistic mirror based on acrylic material as claimed in any one of claims 1 to 5, It is characterized in that The following steps are involved: (1) Preparation of PMMA layer: Add polymethyl methacrylate particles into the screw, start heating the reaction system to a molten state, add an anti-aging agent and mix, and keep mechanical stirring to make it evenly dispersed. After cooling, use a high-pressure extruder to extrude and mold on the surface of the PMMA layer to obtain a PMMA layer, i.e., an acrylic center plate; (2) Composite protective layer Adding polyurethane acrylic resin into the screw and beginning to heat it to a molten state, adding flame retardant, antioxidant, and metal oxide nanoparticles during the heating process and stirring evenly, and after cooling, using a coating machine to form on the surface of the PMMA layer, so as to coat a layer of super-hydrophilic self-cleaning protective film layer structure with antibacterial, antioxidant, anti-ultraviolet, and flame retardant functions on one side of the acrylic center plate; (3) Aluminum coating and corresponding protective coating The aluminum coating and the corresponding protective coating are sprayed on the other side of the acrylic center plate, and the specific operation is as follows: The substrate is cleaned with an organic solvent to remove impurities, and the substrate is placed in a vacuum film coating device. The aluminum substrate is evaporated by an electron beam generated by a plasma generator. As the vacuum degree increases, the evaporated aluminum vapor is deposited on the surface of the substrate into a thin film to obtain an aluminum coating; The substrate is then cooled to near room temperature and placed in air to room pressure, thereby relieving substrate stress and enhancing base film bonding strength. Finally, a protective coating of the aluminum coating is rolled on the surface of the aluminum layer to obtain the mirror material of the acrylic-based artistic mirror.

7. The method for preparing an artistic mirror based on acrylic material according to claim 6, It is characterized in that The thickness of the PMMA layer is 1.5-2.5 mm.

8. The method for preparing an artistic mirror based on acrylic material according to claim 6, It is characterized in that The thickness of the super-hydrophilic self-cleaning protective film layer is 0.1-0.3 mm, the thickness of the aluminum coating is 0.01 mm to 0.02 mm, and the thickness of the protective coating of the aluminum coating is 120-160 nm.

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