Skin-touch anti-fingerprint acrylic panel and preparation method thereof

Abstract

The invention discloses a skin-touch anti-fingerprint acrylic panel and a preparation method thereof, and relates to the technical field of high polymer materials. The main component in the skin-touch anti-fingerprint coating is the polyamino acrylic resin, the specific component perfluorinated component is contained, and through introduction of the polyamino acrylic resin, the contact angle of the surface of a related material is increased, the hydrophobic performance of the related material is improved, and the related hand feeling and the anti-pollution performance are improved. Nanoparticles of specific types and proportions are added into the anti-fingerprint coating to meet the antibacterial and anti-ultraviolet properties of the material, and the friction resistance of the anti-fingerprint coating is improved by improving the mechanical properties of the anti-fingerprint coating.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and more particularly to a skin-feeling anti-fingerprint acrylic panel and a preparation method thereof. Background Art

[0002] Acrylic is a chemical material with the chemical name "PMMA". It belongs to the polyacrylate family and is also known as specially treated plexiglass. It is a replacement product for plexiglass. In the application industry, the raw materials of acrylic generally appear in the form of particles, plates, and pipes.

[0003] Acrylic includes monomers, plates, granules, resins and composite materials. Acrylic plates are made of methyl methacrylate monomers, that is, polymethyl methacrylate plates, organic glass. Acrylic plates are known as "plastic glass" and have strong corrosion resistance, as well as strong surface hardness and gloss. Acrylic plates have crystal-like transparency, with a light transmittance of more than 92%, soft light and clear vision. Acrylic colored with dyes has a good color development effect.

[0004] Acrylic sheets have excellent weather resistance, high surface hardness and surface gloss, and good high temperature performance. Transparent acrylic sheets have a transmittance comparable to glass, but the density is only half of that of glass.

[0005] In addition, it is not as fragile as glass, and even if it breaks, it will not form sharp fragments like glass. Therefore, the application of acrylic sheets is becoming more and more extensive, especially in the fields of construction and advertising. With the development and progress of society, more and more acrylic sheets have begun to enter various industries and have made great contributions.

[0006] However, existing acrylic panel materials may have certain problems when applied to specific scenarios. Currently, acrylic panels are mostly smooth surface materials. With the expansion of their application scope, in some specific application scenarios, they may have problems such as poor hand feel, poor anti-fingerprint performance, and relatively poor anti-fouling performance. They cannot meet the increasing requirements of customers for product performance. Therefore, the development of a skin-feeling anti-fingerprint acrylic panel material is of great significance to solving the above problems.

[0007] In addition, the current relevant application scenarios usually put forward requirements such as antibacterial and UV resistance for related materials, and put forward a series of new requirements for their mechanical properties, such as wear resistance. In addition, for the relevant processing technology, the current existing processing technology mainly includes two sections. The first part is the production of acrylic center board, and the relevant steps include raw material preparation, high temperature melting, extrusion, cooling molding, lamination, slitting and packaging. The second part is the surface modification process of acrylic center board, and the relevant steps include film tearing, coating, drying and curing, lamination, slitting and packaging. The relevant processing flow is relatively complicated, which directly affects the cost of the product. Summary of the invention

[0008] In view of this, the present invention provides a skin-feel anti-fingerprint acrylic panel and a preparation method thereof. The present invention prepares a new skin-feel anti-fingerprint acrylic panel through extrusion, coating and other processes, and the surface coating process is treated with skin-feel liquid, so that the relevant acrylic panel has skin-feel anti-fingerprint performance, and has good transparency and wear resistance.

[0009] In order to achieve the above object, the present invention adopts the following technical solution:

[0010] A skin-feel anti-fingerprint acrylic panel, comprising a PMMA center plate and a skin-feel anti-fingerprint coating;

[0011] The PMMA center plate includes, by mass percentage, 0.8-1.2% toughening agent, 0.2-0.7% UV-resistant agent, and the balance is polymethyl methacrylate particles;

[0012] The skin-feel anti-fingerprint coating comprises, by weight percentage, 8-10% perfluorinated component, 2-5% metal nanoparticles, and the remainder polyamino acrylic resin.

[0013] Preferably, the perfluorinated component is perfluoroalkylethanol polyoxyethylene ether.

[0014] Preferably, the metal nanoparticles are niobium pentoxide, cerium dioxide or titanium dioxide treated with a surfactant.

[0015] Preferably, the surfactant is cetyltrimethylammonium bromide or cetyltrimethylammonium chloride.

[0016] Preferably, the toughening agent is silicon dioxide nanoparticles;

[0017] The anti-UV agent is UV-P.

[0018] Another object of the present invention is to provide a method for preparing the above-mentioned skin-feel anti-fingerprint acrylic panel, comprising the following steps:

[0019] (1) Raw material preparation

[0020] The toughening agent, the anti-UV agent and the polymethyl methacrylate particles are dried to remove the moisture contained in the raw materials;

[0021] (2) High temperature melting

[0022] The raw materials are conveyed into the screw cavity through the automatic feeding system and heated to fully melt the raw materials;

[0023] (3) Extrusion

[0024] The melted liquid is extruded evenly by adjusting the speed of the metering pump at 20-40 rpm, and the thickness of the sheet is controlled to be 2.0 mm;

[0025] (4) Cooling into plate

[0026] The roller speed is adjusted, and the sheet is quickly cooled and formed at room temperature, so that the sheet is quickly cooled and kept flat to obtain an acrylic substrate;

[0027] (5) Applying skin-feeling liquid and drying and curing

[0028] By cold transfer, a skin-feeling liquid is coated on the surface of the acrylic substrate (by transfer coating) to obtain a skin-feeling anti-fingerprint coating, thereby increasing the surface feel of the product and obtaining a semi-finished product;

[0029] (6) Lamination, slitting and packaging

[0030] A PE protective film is attached to the surface of the semi-finished product, and after slitting and packaging, a skin-feel anti-fingerprint acrylic panel is obtained.

[0031] Preferably, the drying in step (1) is performed at 75° C. for 4 hours.

[0032] Preferably, the heating temperature in step (2) is 190-260°C.

[0033] Preferably, the drying in step (5) is performed at 90° C. for 2 minutes.

[0034] Preferably, the thickness of the skin-feel anti-fingerprint coating is 50 μm.

[0035] It can be seen from the above technical solution that compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention can be applied to interior decoration, furniture manufacturing, household appliances, automobile interior and other industries. Compared with the existing acrylic board materials, the present invention can solve the problems of poor hand feel, poor anti-fingerprint and relatively poor anti-fouling performance of the current acrylic panel materials, and meet the requirements of antibacterial and anti-ultraviolet in actual application scenarios, which is of great significance for expanding the existing application scenarios and scope of acrylic;

[0037] 2. The present invention has made certain improvements in the production process. By using a specific process and a skin-feeling liquid with specific ingredients, the two steps of producing the acrylic center board and the skin-feeling treatment process of the acrylic center board surface are combined and improved into one step, which realizes innovation in the relevant production process and reduces the lamination, slitting and packaging of the acrylic center board, as well as the film tearing process in the subsequent hardening process, greatly reducing the complexity of the production process. This process optimization not only reduces the manual operation and equipment requirements, but also improves the automation level of the production line, so that the production efficiency is significantly improved, which is suitable for large-scale industrial production. In addition, by simplifying the process, the present invention also reduces product defects caused by multi-step operations, such as surface defects caused by film tearing, so that the surface of the finished product is smoother and more uniform, and the anti-scratch performance is further enhanced;

[0038] 3. The main component of the skin-feel anti-fingerprint coating of the present invention is polyamino acrylic resin, which contains a specific component of perfluorinated component. Through its introduction, the contact angle of the surface of the relevant material is increased, its hydrophobicity is improved, and the relevant hand feel and anti-fouling performance are improved. The anti-fingerprint coating adds specific types and proportions of nanoparticles to meet the antibacterial and anti-ultraviolet properties of the material, and improves its friction resistance by improving its mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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.

[0040] Figure 1 This is a structural diagram of the skin-feel anti-fingerprint coating of the present invention after coating;

[0041] Figure 2 It is a process flow chart of the present invention;

[0042] Figure 3 This is a microscopic morphology characterization diagram of the product of the present invention;

[0043] Figure 4 This is a friction coefficient detection diagram of the present invention;

[0044] Figure 5 This is a Fourier infrared spectrum test diagram of the present invention;

[0045] Figure 6 This is a hydrophobicity test diagram of the present invention. DETAILED DESCRIPTION

[0046] 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.

[0047] Example 1

[0048] This embodiment provides a skin-feel anti-fingerprint acrylic panel, including a PMMA center plate and a skin-feel anti-fingerprint coating;

[0049] The PMMA center plate is recorded by mass percentage, including: 1.2% silica nanoparticles, 0.2% UV-P, and the balance is polymethyl methacrylate particles;

[0050] The skin-feel anti-fingerprint coating is recorded by weight percentage and includes: 10% perfluoroalkylethanol polyoxyethylene ether, 3% niobium pentoxide whose surface is treated with hexadecyltrimethylammonium bromide, and the remainder is polyamino acrylic resin.

[0051] Example 2

[0052] This embodiment provides a skin-feel anti-fingerprint acrylic panel, including: a PMMA center plate and a skin-feel anti-fingerprint coating;

[0053] The skin-feel anti-fingerprint coating is recorded by weight percentage and includes: 8% perfluoroalkylethanol polyoxyethylene ether, 5% cerium dioxide whose surface is treated with hexadecyltrimethylammonium chloride, and the balance is polyamino acrylic resin.

[0054] The PMMA center plate includes, by mass percentage, 1.2% silicon dioxide nanoparticles, 0.7% UV-P, and the remainder being polymethyl methacrylate particles.

[0055] Example 3

[0056] This embodiment provides a skin-feel anti-fingerprint acrylic panel, including: a PMMA center plate and a skin-feel anti-fingerprint coating;

[0057] The PMMA center plate includes, by mass percentage, 0.8% silicon dioxide nanoparticles, 0.7% UV-P, and the balance polymethyl methacrylate particles;

[0058] The skin-feel anti-fingerprint coating is recorded by weight percentage and includes: 9% perfluoroalkylethanol polyoxyethylene ether, 4% titanium dioxide with the surface treated with hexadecyltrimethylammonium bromide, and the balance is polyamino acrylic resin.

[0059] Example 4

[0060] This embodiment provides a method for preparing the above-mentioned skin-feel anti-fingerprint acrylic panel, comprising the following steps:

[0061] (1) Raw material preparation

[0062] The toughening agent, the anti-UV agent and the polymethyl methacrylate particles were dried at 75°C for 4 hours to remove the moisture contained in the raw materials;

[0063] (2) High temperature melting

[0064] The raw materials are conveyed into the screw cavity through the automatic feeding system and heated to 225°C to fully melt the raw materials;

[0065] (3) Extrusion

[0066] The melted liquid was extruded evenly at 30 rpm by adjusting the speed of the metering pump, and the thickness of the sheet was controlled to be 2.0 mm;

[0067] (4) Cooling into plate

[0068] The roller speed was adjusted to 3.3, and the plate was quickly cooled and formed at room temperature, so that the plate was quickly cooled and kept flat to obtain an acrylic substrate;

[0069] (5) Applying skin-feeling liquid and drying and curing

[0070] By cold transfer, a skin-feeling liquid is coated on the surface of the acrylic substrate (by transfer coating), and dried at 90°C for 2 minutes to obtain a skin-feeling anti-fingerprint coating with a thickness of 50 μm, thereby increasing the surface feel of the product and obtaining a semi-finished product;

[0071] (6) Lamination, slitting and packaging

[0072] A PE protective film is attached to the surface of the semi-finished product, and after slitting and packaging, a skin-feel anti-fingerprint acrylic panel is obtained.

[0073] Performance Experiment

[0074] Microscopic morphology characterization:

[0075] See also Figure 3 The microscopic morphology of the material surface was observed through a metallographic microscope. It can be seen from the microscopic morphology diagram that the 6H scratch-resistant acrylic plate provided by the present invention has a relatively smooth surface and still has a small amount of defects.

[0076] Wear test:

[0077] The samples were subjected to dry sliding wear tests using a high-speed reciprocating friction and wear tester. Under a load of 10 N, the samples were rubbed with a GCr15 grinding ball with a diameter of 6 mm at a sliding speed of 500 t / min for 30 min, and the wear track length was kept at 5 mm. Then, the profile of the wear track was obtained using a surface profiler. The value of the wear volume (V) was obtained by the following formula:

[0078] V = S l

[0079] Where l is the length of the wear track (5 mm), and S is the area adjacent to the wear track under the initial surface, which can be obtained from the cross section of the wear track. The wear rate (K) can be calculated by the formula:

[0080] K=V / (F·L)

[0081] Where F is the normal load (10 N) and L is the total sliding length (150 m).

[0082] After calculation, the wear rate of the modified steel is k = 3.4×10 -4 mm 3 / Nm, compared with the plate without surface treatment, the wear rate k = 4.5×10 -4 mm 3 / Nm. It can be seen that the wear rate decreases after treatment and the mechanical properties are improved.

[0083] Hydrophobicity test:

[0084] See also Figure 6 , the contact angle with water can be measured from the figure to be (91.97°±1.31°). This indicates that it is close to hydrophobicity, has poor wettability, and has limited ability for liquid to spread on the surface. This property makes acrylic sheets have potential in applications such as waterproofing or reducing dirt adhesion.

[0085] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0086] 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. A skin-feel anti-fingerprint acrylic panel, characterized in that: Includes PMMA center plate and skin-feel anti-fingerprint coating; The PMMA center plate includes, by mass percentage, 0.8-1.2% toughening agent, 0.2-0.7% UV-resistant agent, and the balance is polymethyl methacrylate particles; The skin-feel anti-fingerprint coating comprises, by weight percentage, 8-10% perfluorinated component, 2-5% metal nanoparticles, and the remainder polyamino acrylic resin.

2. The skin-feel anti-fingerprint acrylic panel according to claim 1, characterized in that: The perfluorinated component is perfluoroalkylethanol polyoxyethylene ether.

3. The skin-feel anti-fingerprint acrylic panel according to claim 1, characterized in that: The metal nanoparticles are niobium pentoxide, cerium dioxide or titanium dioxide treated with a surfactant.

4. The skin-feel anti-fingerprint acrylic panel according to claim 3, characterized in that: The surfactant is hexadecyltrimethylammonium bromide or hexadecyltrimethylammonium chloride.

5. The skin-feel anti-fingerprint acrylic panel according to claim 1, characterized in that: The toughening agent silica nanoparticles; The anti-UV agent is UV-P.

6. A method for preparing the skin-feel anti-fingerprint acrylic panel according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) Raw material preparation The toughening agent, the anti-UV agent and the polymethyl methacrylate particles are dried to remove the moisture contained in the raw materials; (2) High temperature melting The raw materials are conveyed into the screw cavity through the automatic feeding system and heated to fully melt the raw materials; (3) Extrusion The melted liquid is evenly extruded by adjusting the speed of the metering pump at 20-40 rpm, and the thickness of the sheet is controlled to be 2.0 mm; (4) Cooling into plate The roller speed is adjusted, and the sheet is quickly cooled and formed at room temperature, so that the sheet is quickly cooled and kept flat to obtain an acrylic substrate; (5) Applying skin-feeling liquid and drying and curing By cold transfer, a skin-feeling liquid is coated on the surface of the acrylic substrate, and after drying, a skin-feeling anti-fingerprint coating is obtained to increase the surface feel of the product and obtain a semi-finished product; (6) Lamination, slitting and packaging A PE protective film is attached to the surface of the semi-finished product, and after slitting and packaging, a skin-feel anti-fingerprint acrylic panel is obtained.

7. The method for preparing a skin-feel anti-fingerprint acrylic panel according to claim 6, characterized in that: The drying in step (1) is performed at 75° C. for 4 h.

8. The method for preparing a skin-feel anti-fingerprint acrylic panel according to claim 6, characterized in that: The heating temperature in step (2) is 190-260°C.

9. The method for preparing a skin-feel anti-fingerprint acrylic panel according to claim 6, characterized in that: The drying in step (5) is performed at 90° C. for 2 minutes.

10. The method for preparing a skin-feel anti-fingerprint acrylic panel according to claim 6, characterized in that: The thickness of the skin-feel anti-fingerprint coating is 50μm.

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