Wear-resistant decorative paper and preparation method thereof

Abstract

The present invention is applicable to the technical field of decorative materials and provides a wear-resistant decorative paper and a preparation method thereof. The wear-resistant decorative paper comprises a base paper layer; a protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer; the coating layer comprises the following raw materials: melamine copolymer resin, modified acrylic emulsion, nano-silicon dioxide, nano-talc powder, nano-titanium dioxide, modified polytetrafluoroethylene, sodium carboxymethyl cellulose and water. The present invention combines the advantages of polyurethane emulsion and acrylic emulsion by adding modified acrylic emulsion to the coating layer, and has good wear resistance. Graphene oxide is grafted into the polymer chain to improve the dispersibility of the graphene oxide, and the mechanical properties, wear resistance and adhesion of the coating layer are improved. By adding modified polytetrafluoroethylene to the coating layer, the paper has excellent wear resistance and can reduce the friction coefficient, further improving the wear resistance of the coating layer.

Description

Technical Field

[0001] The invention belongs to the technical field of decorative materials, and in particular relates to wear-resistant decorative paper and a preparation method thereof. Background Art

[0002] Decorative paper has become an indispensable raw material in many building materials products. Furniture, cabinets, floors, walls, doors, windows and ceilings have become the objects of people's pursuit of decoration.

[0003] Decorative paper is a specialty industrial paper made from wood pulp fibers and organic fillers through a special process, followed by printing or embossing and then impregnation. Existing decorative paper has poor wear resistance. During use, the glue coating can fall off the paper due to friction and decomposition. This can cause extensive wear and tear on the decorative paper surface, leading to powder and lint shedding, resulting in a shorter lifespan. Summary of the Invention

[0004] The present invention provides a wear-resistant decorative paper, aiming to solve the problem of poor wear resistance of existing decorative paper.

[0005] The present invention is achieved by providing a wear-resistant decorative paper comprising:

[0006] base paper layer;

[0007] A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer;

[0008] The coating layer comprises the following raw materials in parts by weight: 150-200 parts of melamine copolymer resin, 30-50 parts of modified acrylic emulsion, 10-16 parts of nano silicon dioxide, 6-14 parts of nano talc powder, 8-16 parts of nano titanium dioxide, 25-35 parts of modified polytetrafluoroethylene, 4-8 parts of sodium carboxymethyl cellulose and 400-500 parts of water.

[0009] Preferably, the coating layer comprises the following raw materials in parts by weight: 160-190 parts of melamine copolymer resin, 35-45 parts of modified acrylic emulsion, 12-14 parts of nano-silicon dioxide, 8-12 parts of nano-talc powder, 10-14 parts of nano-titanium dioxide, 28-32 parts of modified polytetrafluoroethylene, 5-7 parts of sodium carboxymethyl cellulose and 425-475 parts of water.

[0010] Preferably, the coating layer comprises the following raw materials in parts by weight: 175 parts of melamine copolymer resin, 40 parts of modified acrylic emulsion, 13 parts of nano-silicon dioxide, 10 parts of nano-talc powder, 12 parts of nano-titanium dioxide, 30 parts of modified polytetrafluoroethylene, 6 parts of sodium carboxymethyl cellulose and 450 parts of water.

[0011] Preferably, the preparation method of the modified acrylic emulsion is as follows: 6-10 parts by weight of graphene oxide, 1-2 parts of a silane coupling agent and 1-3 parts of hydrochloric acid are weighed and mixed evenly, reacted at 70-80° C. for 30-50 minutes, and then 15-20 parts of a hydrazine hydrate aqueous solution are added for reaction to obtain a product A for standby use; 20-30 parts of an acrylate, 4-8 parts of styrene, the product A, 5-9 parts of a polyurethane, 1-2 parts of an emulsifier and 10-16 parts of water are mixed evenly, heated to 80-90° C. for reaction for 1-2 hours, and the pH value of the reaction solution is adjusted to 7-8 to obtain a modified acrylic emulsion. The modified acrylic emulsion has the advantages of both polyurethane emulsion and acrylic emulsion, has good wear resistance, and improves the dispersibility of the graphene oxide by grafting the graphene oxide into the polymer chain, and improves the mechanical properties, wear resistance and adhesion of the material.

[0012] Preferably, the preparation method of the modified polytetrafluoroethylene is as follows: 20-25 parts of polytetrafluoroethylene, 1-2 parts of molybdenum disulfide powder, 1-3 parts of glass fiber, 1-2 parts of carbon fiber, 2-3 parts of nylon fiber, 1-4 parts of micron-sized alumina and 5-10 parts of liquid paraffin are weighed in parts by weight; the above raw materials are stirred at a speed of 300-500 r / min for 30-40 minutes to obtain a mixture, the mixture is placed in a low-temperature plasma equipment, and is subjected to low-temperature plasma treatment for 1-1.5 hours while stirring, and is taken out and heated to 60-80°C while stirring, and reacted for 40-60 minutes. min, and modified polytetrafluoroethylene is obtained. By adding glass fiber, carbon fiber, nylon fiber, and micron-sized alumina as fillers, it has a skeleton and supporting function, fully improving the wear resistance of polytetrafluoroethylene. Molybdenum disulfide powder has good lubrication performance and can reduce the friction coefficient. Then it is treated with low-temperature plasma. Low-temperature plasma contains various high-energy active particles such as ions, excited molecules, free radicals and photons. These active particles act on the surface of polymers such as fibers and high molecular materials, increasing the surface activity of the materials, allowing them to fully combine to form a stable system, and improving the overall mechanical properties of the materials.

[0013] Preferably, the preparation method of the coating layer material is as follows: nano-silicon dioxide, nano-talc powder and nano-titanium dioxide are mixed, calcined at 300-400°C, then cooled to room temperature, melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose and water are added, and stirred at a speed of 300-360r / min for 50-80min to obtain the coating layer material. The calcination treatment can relax the inherent tension of the molecular structure of the material and improve the mechanical properties.

[0014] Preferably, the preparation method of the spray coating material is as follows: weigh 20-30 parts of diatomaceous earth, 1-3 parts of plasticizer, 6-10 parts of shell powder and 30-40 parts of modified polyethylene glycol in parts by weight, and mix them evenly to obtain the spray coating material;

[0015] Preferably, the preparation method of the modified polyethylene glycol is as follows: 20-25 parts of polyethylene glycol are added to 40-60 parts of sulfoxide bromide by weight, the temperature is raised to 50-60° C., and then the mixture is added to 100-120 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 70-90 parts of N,N-dimethylformamide, 2-4 parts of 3-amino-1,2-propylene glycol and 3-5 parts of diethylamine are added, the temperature is raised to 80-90° C., stirred for 1-2 hours, and extracted with dichloromethane. Modified polyethylene glycol is obtained by precipitation with anhydrous ether and vacuum drying. The polyethylene glycol is treated and amino groups are grafted on the ends of the polyethylene glycol to enhance the reaction activity of the polyethylene glycol. It is compounded with diatomaceous earth and shell powder, and reacts with each other to form a macromolecular network structure, which stabilizes the structure of the spray layer. At the same time, diatomaceous earth and shell powder have good adsorption properties, which can improve the bonding strength with other layers. The shell powder has an irregular shape and a large roughness, and the edges and corners can be inserted into other layers, further improving the bonding strength between layers.

[0016] Preferably, the impregnation layer material comprises the following raw materials in parts by weight: 60-80 parts of melamine copolymer resin, 20-30 parts of styrene-butadiene latex, 2-5 parts of polyamide-polyamine epichlorohydrin and 1-3 parts of polyvinyl alcohol.

[0017] The present invention also provides a method for preparing the above-mentioned wear-resistant decorative paper, comprising the following steps:

[0018] S1: immersing the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer;

[0019] S2 sprays the spray coating material onto the surface of the impregnation layer and dries it at 50-60°C to form a spray coating;

[0020] S3: coating the coating layer material on the surface of the spray layer, and drying it at 60-70° C. to obtain the desired wear-resistant decorative paper.

[0021] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0022] The wear-resistant decorative paper provided by the present invention is provided with a base paper layer and a protective layer, wherein the protective layer includes an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer. By adding a modified acrylic emulsion to the coating layer, the advantages of both polyurethane emulsion and acrylic emulsion are combined, and the wear resistance is good. Graphene oxide is grafted into the polymer chain to improve the dispersibility of the graphene oxide, and the mechanical properties, wear resistance and adhesion of the coating layer are improved. By adding modified polytetrafluoroethylene to the coating layer, the coating layer has excellent wear resistance and can reduce the friction coefficient, further improving the wear resistance of the coating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a preparation flow chart of a wear-resistant decorative paper provided by the present invention. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] Example 1

[0027] An embodiment of the present invention provides a wear-resistant decorative paper, comprising:

[0028] base paper layer;

[0029] A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer;

[0030] like Figure 1 As shown, the preparation method of the wear-resistant decorative paper is as follows:

[0031] impregnating the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer;

[0032] Spray the spray coating material onto the surface of the impregnation layer and dry it at 50°C to form a spray coating;

[0033] The coating layer material is applied on the surface of the spray layer and dried at 60° C. to obtain the desired wear-resistant decorative paper.

[0034] The coating layer comprises the following raw materials in parts by weight: 150 parts of melamine copolymer resin, 30 parts of modified acrylic emulsion, 10 parts of nano silicon dioxide, 6 parts of nano talc, 8 parts of nano titanium dioxide, 25 parts of modified polytetrafluoroethylene, 4 parts of sodium carboxymethyl cellulose and 400 parts of water.

[0035] Specifically, the preparation method of the modified acrylic emulsion is as follows: 6 parts of graphene oxide, 1 part of a silane coupling agent and 1 part of hydrochloric acid are weighed and mixed, reacted at 70°C for 30 minutes, and then 15 parts of a hydrazine hydrate aqueous solution are added for reaction to obtain product A for standby use; 20 parts of acrylic ester, 4 parts of styrene, product A, 5 parts of polyurethane, 1 part of an emulsifier and 10 parts of water are mixed, heated to 80°C for reaction for 1 hour, and the pH value of the reaction solution is adjusted to 7 to obtain the modified acrylic emulsion.

[0036] Preferably, the preparation method of the modified polytetrafluoroethylene is as follows: 20 parts of polytetrafluoroethylene, 1 part of molybdenum disulfide powder, 1 part of glass fiber, 1 part of carbon fiber, 2 parts of nylon fiber, 1 part of micron-sized alumina and 5 parts of liquid paraffin are weighed in parts by weight; the above raw materials are stirred at a speed of 300 r / min for 30 minutes to obtain a mixture, the mixture is placed in a low-temperature plasma equipment, and is subjected to low-temperature plasma treatment for 1.5 hours while stirring, and then taken out and heated to 60°C while stirring, and reacted for 40 minutes to obtain modified polytetrafluoroethylene.

[0037] In this embodiment, the coating layer material is prepared as follows: nano-silicon dioxide, nano-talc powder, and nano-titanium dioxide are mixed, calcined at 300°C, and then cooled to room temperature. Melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose, and water are added, and stirred at a speed of 300 r / min for 50 minutes to obtain a coating layer material.

[0038] Furthermore, the preparation method of the spray coating material is as follows: 20 parts of diatomaceous earth, 1 part of plasticizer, 6 parts of shell powder and 30 parts of modified polyethylene glycol are weighed and mixed uniformly to obtain the spray coating material;

[0039] Furthermore, the preparation method of the modified polyethylene glycol is as follows: 20 parts of polyethylene glycol are added to 40 parts of sulfoxide bromide by weight, the temperature is raised to 50° C., and then added to 100 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 70 parts of N,N-dimethylformamide, 2 parts of 3-amino-1,2-propylene glycol and 3 parts of diethylamine are added, the temperature is raised to 80° C. and stirred for 1 hour, extracted with dichloromethane, precipitated with anhydrous ether, and vacuum dried to obtain the modified polyethylene glycol.

[0040] In a specific implementation, the impregnation layer material includes the following raw materials in parts by weight: 60 parts of melamine copolymer resin, 20 parts of styrene-butadiene latex, 2 parts of polyamide polyamine epichlorohydrin and 1 part of polyvinyl alcohol.

[0041] Example 2

[0042] An embodiment of the present invention provides a wear-resistant decorative paper, comprising:

[0043] base paper layer;

[0044] A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer;

[0045] like Figure 1 As shown, the preparation method of the wear-resistant decorative paper is as follows:

[0046] impregnating the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer;

[0047] Spray the spray coating material onto the surface of the impregnation layer and dry it at 50°C to form a spray coating;

[0048] The coating layer material is applied on the surface of the spray layer and dried at 60° C. to obtain the desired wear-resistant decorative paper.

[0049] The coating layer comprises the following raw materials in parts by weight: 160 parts of melamine copolymer resin, 35 parts of modified acrylic emulsion, 12 parts of nano silicon dioxide, 8 parts of nano talc, 10 parts of nano titanium dioxide, 28 parts of modified polytetrafluoroethylene, 5 parts of sodium carboxymethyl cellulose and 425 parts of water.

[0050] Specifically, the preparation method of the modified acrylic emulsion is as follows: 6 parts of graphene oxide, 1 part of a silane coupling agent and 1 part of hydrochloric acid are weighed and mixed, reacted at 70°C for 30 minutes, and then 15 parts of a hydrazine hydrate aqueous solution are added for reaction to obtain product A for standby use; 20 parts of acrylic ester, 4 parts of styrene, product A, 5 parts of polyurethane, 1 part of an emulsifier and 10 parts of water are mixed, heated to 80°C for reaction for 1 hour, and the pH value of the reaction solution is adjusted to 7 to obtain the modified acrylic emulsion.

[0051] Preferably, the preparation method of the modified polytetrafluoroethylene is as follows: 20 parts of polytetrafluoroethylene, 1 part of molybdenum disulfide powder, 1 part of glass fiber, 1 part of carbon fiber, 2 parts of nylon fiber, 1 part of micron-sized alumina and 5 parts of liquid paraffin are weighed in parts by weight; the above raw materials are stirred at a speed of 300 r / min for 30 minutes to obtain a mixture, the mixture is placed in a low-temperature plasma equipment, and is subjected to low-temperature plasma treatment for 1.5 hours while stirring, and then taken out and heated to 60°C while stirring, and reacted for 40 minutes to obtain modified polytetrafluoroethylene.

[0052] In this embodiment, the coating layer material is prepared as follows: nano-silicon dioxide, nano-talc powder, and nano-titanium dioxide are mixed, calcined at 300°C, and then cooled to room temperature. Melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose, and water are added, and stirred at a speed of 300 r / min for 50 minutes to obtain a coating layer material.

[0053] Furthermore, the preparation method of the spray coating material is as follows: 20 parts of diatomaceous earth, 1 part of plasticizer, 6 parts of shell powder and 30 parts of modified polyethylene glycol are weighed and mixed uniformly to obtain the spray coating material;

[0054] Furthermore, the preparation method of the modified polyethylene glycol is as follows: 20 parts of polyethylene glycol are added to 40 parts of sulfoxide bromide by weight, the temperature is raised to 50° C., and then added to 100 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 70 parts of N,N-dimethylformamide, 2 parts of 3-amino-1,2-propylene glycol and 3 parts of diethylamine are added, the temperature is raised to 80° C. and stirred for 1 hour, extracted with dichloromethane, precipitated with anhydrous ether, and vacuum dried to obtain the modified polyethylene glycol.

[0055] In a specific implementation, the impregnation layer material includes the following raw materials in parts by weight: 60 parts of melamine copolymer resin, 20 parts of styrene-butadiene latex, 2 parts of polyamide polyamine epichlorohydrin and 1 part of polyvinyl alcohol.

[0056] Example 3

[0057] An embodiment of the present invention provides a wear-resistant decorative paper, comprising:

[0058] base paper layer;

[0059] A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer;

[0060] like Figure 1 As shown, the preparation method of the wear-resistant decorative paper is as follows:

[0061] impregnating the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer;

[0062] Spray the spray coating material onto the surface of the impregnation layer and dry it at 55°C to form a spray coating;

[0063] The coating layer material is applied on the surface of the spray layer and dried at 65° C. to obtain the desired wear-resistant decorative paper.

[0064] The coating layer comprises the following raw materials in parts by weight: 175 parts of melamine copolymer resin, 40 parts of modified acrylic emulsion, 13 parts of nano silicon dioxide, 10 parts of nano talc, 12 parts of nano titanium dioxide, 30 parts of modified polytetrafluoroethylene, 6 parts of sodium carboxymethyl cellulose and 450 parts of water.

[0065] Specifically, the preparation method of the modified acrylic emulsion is as follows: 8 parts of graphene oxide, 1.5 parts of a silane coupling agent and 2 parts of hydrochloric acid are weighed and mixed, reacted at 75° C. for 40 minutes, and then 18 parts of a hydrazine hydrate aqueous solution are added for reaction to obtain a product A for standby use; 25 parts of acrylic ester, 6 parts of styrene, product A, 7 parts of polyurethane, 1.5 parts of an emulsifier and 13 parts of water are mixed, heated to 85° C. for reaction for 1.5 hours, and the pH value of the reaction solution is adjusted to 7 to obtain a modified acrylic emulsion.

[0066] Preferably, the preparation method of the modified polytetrafluoroethylene is as follows: 23 parts of polytetrafluoroethylene, 1.5 parts of molybdenum disulfide powder, 2 parts of glass fiber, 1.5 parts of carbon fiber, 2.5 parts of nylon fiber, 2.5 parts of micron-sized alumina and 7.5 parts of liquid paraffin are weighed in parts by weight; the above raw materials are stirred at a speed of 400 r / min for 35 minutes to obtain a mixture, the mixture is placed in a low-temperature plasma equipment, and is subjected to low-temperature plasma treatment for 1.2 hours while stirring, and then taken out and heated to 70°C while stirring, and reacted for 50 minutes to obtain modified polytetrafluoroethylene.

[0067] In this embodiment, the coating layer material is prepared as follows: nano-silicon dioxide, nano-talc powder, and nano-titanium dioxide are mixed, calcined at 350°C, and then cooled to room temperature. Melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose, and water are added, and stirred at a speed of 330 r / min for 65 minutes to obtain a coating layer material.

[0068] Furthermore, the preparation method of the spray coating material is as follows: 25 parts of diatomaceous earth, 2 parts of plasticizer, 8 parts of shell powder and 35 parts of modified polyethylene glycol are weighed and mixed uniformly to obtain the spray coating material;

[0069] Furthermore, the preparation method of the modified polyethylene glycol is as follows: 22.5 parts of polyethylene glycol are added to 50 parts of thionyl bromide by weight, the temperature is raised to 55° C., and then added to 110 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 80 parts of N,N-dimethylformamide, 3 parts of 3-amino-1,2-propylene glycol and 4 parts of diethylamine are added, the temperature is raised to 85° C. and stirred for 1.5 hours, extracted with dichloromethane, precipitated with anhydrous ether, and vacuum dried to obtain the modified polyethylene glycol.

[0070] In a specific implementation, the impregnation layer material includes the following raw materials in parts by weight: 70 parts of melamine copolymer resin, 25 parts of styrene-butadiene latex, 3.5 parts of polyamide-polyamine epichlorohydrin and 2 parts of polyvinyl alcohol.

[0071] Example 4

[0072] An embodiment of the present invention provides a wear-resistant decorative paper, comprising:

[0073] base paper layer;

[0074] A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer;

[0075] like Figure 1 As shown, the preparation method of the wear-resistant decorative paper is as follows:

[0076] impregnating the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer;

[0077] Spray the spray coating material onto the surface of the impregnation layer and dry it at 60°C to form a spray coating;

[0078] The coating layer material is applied on the surface of the spray layer and dried at 70° C. to obtain the desired wear-resistant decorative paper.

[0079] The coating layer comprises the following raw materials in parts by weight: 190 parts of melamine copolymer resin, 45 parts of modified acrylic emulsion, 14 parts of nano silicon dioxide, 12 parts of nano talc, 14 parts of nano titanium dioxide, 32 parts of modified polytetrafluoroethylene, 7 parts of sodium carboxymethyl cellulose and 475 parts of water.

[0080] Specifically, the preparation method of the modified acrylic emulsion is as follows: 10 parts of graphene oxide, 2 parts of silane coupling agent and 3 parts of hydrochloric acid are weighed and mixed, reacted at 80°C for 50 minutes, and then 20 parts of hydrazine hydrate aqueous solution are added for reaction to obtain product A for standby use; 30 parts of acrylate, 8 parts of styrene, product A, 9 parts of polyurethane, 2 parts of emulsifier and 16 parts of water are mixed, heated to 90°C for reaction for 2 hours, and the pH value of the reaction solution is adjusted to 7 to obtain the modified acrylic emulsion.

[0081] Preferably, the preparation method of the modified polytetrafluoroethylene is as follows: 25 parts of polytetrafluoroethylene, 2 parts of molybdenum disulfide powder, 3 parts of glass fiber, 2 parts of carbon fiber, 3 parts of nylon fiber, 4 parts of micron-sized alumina and 10 parts of liquid paraffin are weighed in parts by weight; the above raw materials are stirred at a speed of 500 r / min for 40 minutes to obtain a mixture, the mixture is placed in a low-temperature plasma equipment, and is subjected to low-temperature plasma treatment for 1.5 hours while stirring, and then taken out and heated to 80°C while stirring, and reacted for 60 minutes to obtain modified polytetrafluoroethylene.

[0082] In this embodiment, the coating layer material is prepared as follows: nano-silicon dioxide, nano-talc powder, and nano-titanium dioxide are mixed, calcined at 400°C, and then cooled to room temperature. Melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose, and water are added, and stirred at a speed of 360 r / min for 80 minutes to obtain a coating layer material.

[0083] Furthermore, the preparation method of the spray coating material is as follows: 30 parts of diatomaceous earth, 3 parts of plasticizer, 10 parts of shell powder and 40 parts of modified polyethylene glycol are weighed and mixed uniformly to obtain the spray coating material;

[0084] Furthermore, the preparation method of the modified polyethylene glycol is as follows: 25 parts of polyethylene glycol are added to 60 parts of sulfoxide bromide by weight, the temperature is raised to 60° C., and then added to 120 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 90 parts of N,N-dimethylformamide, 4 parts of 3-amino-1,2-propylene glycol and 5 parts of diethylamine are added, the temperature is raised to 90° C. and stirred for 2 hours, extracted with dichloromethane, precipitated with anhydrous ether, and vacuum dried to obtain the modified polyethylene glycol.

[0085] In a specific implementation, the impregnation layer material includes the following raw materials in parts by weight: 80 parts of melamine copolymer resin, 30 parts of styrene-butadiene latex, 5 parts of polyamide polyamine epichlorohydrin and 3 parts of polyvinyl alcohol.

[0086] Example 5

[0087] An embodiment of the present invention provides a wear-resistant decorative paper, comprising:

[0088] base paper layer;

[0089] A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer;

[0090] like Figure 1 As shown, the preparation method of the wear-resistant decorative paper is as follows:

[0091] impregnating the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer;

[0092] Spray the spray coating material onto the surface of the impregnation layer and dry it at 60°C to form a spray coating;

[0093] The coating layer material is applied on the surface of the spray layer and dried at 70° C. to obtain the desired wear-resistant decorative paper.

[0094] The coating layer comprises the following raw materials in parts by weight: 200 parts of melamine copolymer resin, 50 parts of modified acrylic emulsion, 16 parts of nano silicon dioxide, 14 parts of nano talc, 16 parts of nano titanium dioxide, 35 parts of modified polytetrafluoroethylene, 8 parts of sodium carboxymethyl cellulose and 500 parts of water.

[0095] Specifically, the preparation method of the modified acrylic emulsion is as follows: 10 parts of graphene oxide, 2 parts of silane coupling agent and 3 parts of hydrochloric acid are weighed and mixed, reacted at 80°C for 50 minutes, and then 20 parts of hydrazine hydrate aqueous solution are added for reaction to obtain product A for standby use; 30 parts of acrylate, 8 parts of styrene, product A, 9 parts of polyurethane, 2 parts of emulsifier and 16 parts of water are mixed, heated to 90°C for reaction for 2 hours, and the pH value of the reaction solution is adjusted to 7 to obtain the modified acrylic emulsion.

[0096] Preferably, the preparation method of the modified polytetrafluoroethylene is as follows: 25 parts of polytetrafluoroethylene, 2 parts of molybdenum disulfide powder, 3 parts of glass fiber, 2 parts of carbon fiber, 3 parts of nylon fiber, 4 parts of micron-sized alumina and 10 parts of liquid paraffin are weighed in parts by weight; the above raw materials are stirred at a speed of 500 r / min for 40 minutes to obtain a mixture, the mixture is placed in a low-temperature plasma equipment, and is subjected to low-temperature plasma treatment for 1.5 hours while stirring, and then taken out and heated to 80°C while stirring, and reacted for 60 minutes to obtain modified polytetrafluoroethylene.

[0097] In this embodiment, the coating layer material is prepared as follows: nano-silicon dioxide, nano-talc powder, and nano-titanium dioxide are mixed, calcined at 400°C, and then cooled to room temperature. Melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose, and water are added, and stirred at a speed of 360 r / min for 80 minutes to obtain a coating layer material.

[0098] Furthermore, the preparation method of the spray coating material is as follows: 30 parts of diatomaceous earth, 3 parts of plasticizer, 10 parts of shell powder and 40 parts of modified polyethylene glycol are weighed and mixed uniformly to obtain the spray coating material;

[0099] Furthermore, the preparation method of the modified polyethylene glycol is as follows: 25 parts of polyethylene glycol are added to 60 parts of sulfoxide bromide by weight, the temperature is raised to 60° C., and then added to 120 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 90 parts of N,N-dimethylformamide, 4 parts of 3-amino-1,2-propylene glycol and 5 parts of diethylamine are added, the temperature is raised to 90° C. and stirred for 2 hours, extracted with dichloromethane, precipitated with anhydrous ether, and vacuum dried to obtain the modified polyethylene glycol.

[0100] In a specific implementation, the impregnation layer material includes the following raw materials in parts by weight: 80 parts of melamine copolymer resin, 30 parts of styrene-butadiene latex, 5 parts of polyamide polyamine epichlorohydrin and 3 parts of polyvinyl alcohol.

[0101] Comparative Example 1: The difference from Example 3 is that the modified acrylic emulsion is replaced by ordinary acrylic emulsion.

[0102] Comparative Example 2: The difference from Example 3 is that the modified polytetrafluoroethylene is replaced by ordinary polytetrafluoroethylene.

[0103] Comparative Example 3: The difference from Example 3 is that the modified acrylic emulsion is replaced by ordinary acrylic emulsion and the modified polytetrafluoroethylene is replaced by ordinary polytetrafluoroethylene.

[0104] Comparative Example 4

[0105] A commercially available decorative paper.

[0106] test

[0107] The wear resistance of the decorative papers of Examples 1-5 and Comparative Examples 1-4 was tested:

[0108] Refer to GB / T18102-2007. During the test, record the time taken for each 500-revolution grinding. Calculate the time required for the wear specified in GB / T18102-2007 and approximate the number of revolutions based on the time. Refer to GB / T465.2-2008, "Paper and board — Determination of tensile strength after immersion in water," to test the tensile strength of the decorative paper. Specific data are shown in the following table:

[0109] Group Wear-resistant revolutions (r) Tensile strength (knf / 15mm) Example 1 10945 2.53 Example 2 10952 2.55 Example 3 10965 2.58 Example 4 10955 2.56 Example 5 10947 2.54 Comparative Example 1 7583 1.52 Comparative Example 2 7576 1.49 Comparative Example 3 5689 0.82 Comparative Example 4 5568 0.78

[0110] From the above results, it can be seen that the wear-resistant decorative paper prepared by the present invention has excellent wear resistance and tensile strength, and the added modified acrylic emulsion and modified polytetrafluoroethylene have a synergistic effect, which can greatly improve the wear resistance and tensile strength of the decorative paper.

[0111] It should be noted that, for the sake of simplicity, the aforementioned embodiments are described as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0112] In the embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0113] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0114] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A wear-resistant decorative paper, characterized in that: include: base paper layer; A protective layer covering both sides of the base paper layer, the protective layer comprising an impregnation layer, a spray layer and a coating layer sequentially arranged in a direction away from the base paper layer; The coating layer comprises the following raw materials in parts by weight: 150-200 parts of melamine copolymer resin, 30-50 parts of modified acrylic emulsion, 10-16 parts of nano silicon dioxide, 6-14 parts of nano talc, 8-16 parts of nano titanium dioxide, 25-35 parts of modified polytetrafluoroethylene, 4-8 parts of sodium carboxymethyl cellulose and 400-500 parts of water; The modified polytetrafluoroethylene preparation method is as follows: weighing, by weight, 20-25 parts of polytetrafluoroethylene, 1-2 parts of molybdenum disulfide powder, 1-3 parts of glass fiber, 1-2 parts of carbon fiber, 2-3 parts of nylon fiber, 1-4 parts of micron-sized aluminum oxide, and 5-10 parts of liquid paraffin; stirring the above raw materials at a speed of 300-500 r / min for 30-40 minutes to obtain a mixture; placing the mixture in a low-temperature plasma device, performing low-temperature plasma treatment for 1-1.5 hours while stirring; taking out and heating to 60-80° C. while stirring, and reacting for 40-60 minutes to obtain the modified polytetrafluoroethylene.

2. The wear-resistant decorative paper according to claim 1, characterized in that: The coating layer comprises the following raw materials in parts by weight: 160-190 parts of melamine copolymer resin, 35-45 parts of modified acrylic emulsion, 12-14 parts of nano silicon dioxide, 8-12 parts of nano talc powder, 10-14 parts of nano titanium dioxide, 28-32 parts of modified polytetrafluoroethylene, 5-7 parts of sodium carboxymethyl cellulose and 425-475 parts of water.

3. The wear-resistant decorative paper according to claim 2, characterized in that: The coating layer comprises the following raw materials in parts by weight: 175 parts of melamine copolymer resin, 40 parts of modified acrylic emulsion, 13 parts of nano silicon dioxide, 10 parts of nano talc powder, 12 parts of nano titanium dioxide, 30 parts of modified polytetrafluoroethylene, 6 parts of sodium carboxymethyl cellulose and 450 parts of water.

4. The wear-resistant decorative paper according to claim 1, characterized in that: The modified acrylic emulsion is prepared as follows: 6-10 parts by weight of graphene oxide, 1-2 parts of a silane coupling agent, and 1-3 parts of hydrochloric acid are weighed and mixed evenly, reacted at 70-80° C. for 30-50 minutes, and then 15-20 parts of a hydrazine hydrate aqueous solution are added for reaction to obtain a product A for later use; 20-30 parts of acrylic ester, 4-8 parts of styrene, the product A, 5-9 parts of polyurethane, 1-2 parts of an emulsifier, and 10-16 parts of water are mixed evenly, heated to 80-90° C. for reaction for 1-2 hours, and the pH value of the reaction solution is adjusted to 7-8 to obtain the modified acrylic emulsion.

5. The wear-resistant decorative paper according to claim 1, characterized in that: The coating layer is prepared by mixing nano-silicon dioxide, nano-talc powder and nano-titanium dioxide, calcining the mixture at 300-400°C, cooling the mixture to room temperature, adding melamine copolymer resin, modified acrylic emulsion, modified polytetrafluoroethylene, sodium carboxymethyl cellulose and water, and stirring the mixture at a speed of 300-360 r / min for 50-80 minutes to obtain a coating layer material.

6. The wear-resistant decorative paper according to claim 1, characterized in that: The preparation method of the spray coating is as follows: 20-30 parts of diatomaceous earth, 1-3 parts of plasticizer, 6-10 parts of shell powder and 30-40 parts of modified polyethylene glycol are weighed in parts by weight, and the mixture is evenly mixed to obtain a spray coating material.

7. The wear-resistant decorative paper according to claim 6, characterized in that: The preparation method of the modified polyethylene glycol is as follows: 20-25 parts of polyethylene glycol are added to 40-60 parts of sulfoxide bromide by weight, the mixture is heated to 50-60° C., and then the mixture is added to 100-120 parts of anhydrous ether, filtered, washed, and dried. The product is dissolved in 70-90 parts of N,N-dimethylformamide, 2-4 parts of 3-amino-1,2-propylene glycol and 3-5 parts of diethylamine are added, the mixture is heated to 80-90° C. and stirred for 1-2 hours, extracted with dichloromethane, precipitated with anhydrous ether, and dried in vacuo to obtain the modified polyethylene glycol.

8. The wear-resistant decorative paper according to claim 1, characterized in that: The impregnation layer comprises the following raw materials in parts by weight: 60-80 parts of melamine copolymer resin, 20-30 parts of styrene-butadiene latex, 2-5 parts of polyamide-polyamine epichlorohydrin and 1-3 parts of polyvinyl alcohol.

9. The method for preparing the wear-resistant decorative paper according to any one of claims 1 to 8, characterized in that: The steps include: S1: immersing the base paper layer into the impregnation layer material to form impregnation layers on opposite sides of the base paper layer; S2 sprays the spray coating material onto the surface of the impregnation layer and dries it at 50-60°C to form a spray coating; S3: coating the coating layer material on the surface of the spray layer, and drying it at 60-70° C. to obtain the desired wear-resistant decorative paper.

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