A coating for furniture

Abstract

The application discloses a kind of furniture coatings, belong to paint technical field, the furniture coatings described, including the following weight parts components: 45~52 parts unsaturated polyester resin, 20~30 parts waterborne polyurethane resin, 5~12 parts waterborne fluorocarbon resin, 4~10 parts modified montmorillonite, 4~10 parts dipentaerythritol five acrylate, 2~5 parts fluorine silicon modified acrylate, 2~5 parts photoinitiator, 2~5 parts silica powder, 0.2~0.6 parts leveling agent;The application is unsaturated polyester resin as matrix, under the synergistic effect of waterborne polyurethane resin, waterborne fluorocarbon resin, modified montmorillonite, dipentaerythritol five acrylate, fluorine silicon modified acrylate, photoinitiator, silica powder, leveling agent, obtained with excellent impact resistance, mechanical properties and weatherability coating, the coating is very suitable for furniture, has excellent anti-bump, anti-collision and anti-falling effect, has wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of paint technology, in particular to a kind of furniture paint. BACKGROUND

[0002] Traditional furniture, wardrobe finish often adopts the way of spraying paint, not only there is harmful substance such as formaldehyde, causes harm to environment and human health, and there is big problem in environmental protection, there is emission pollution. At the same time, furniture panel hard thing is easy to knock and break, lack effective anti-collision function, some ceramics, glass and other products are more easily broken.

[0003] CN201911312208.6 discloses a kind of wooden furniture paint, according to mass percentage, the following components are included: wax base 1-12%, resin 5-15%, mixed oil 45-50%, turpentine 30-47%.It improves the inside of wood tube hole by adding a large amount of oil, and nourishes wood; nitrogen maintenance requires high, is not easy to maintain and maintain.

[0004] CN202211424569.1 discloses a kind of furniture anticorrosive paint, including the following components and mass percentage content: silicone modified polyurethane epoxy resin 30-55%, antirust agent 5-10% solvent 15-40% curing agent 1-20%, the solvent is selected from n-butyl acetate or propylene glycol methyl ether acetate, which has excellent corrosion protection effect, but a large amount of volatile solvent is added, which may cause harm to environment and human health.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The present application aims to overcome the deficiencies in the prior art and provide a kind of furniture paint, the paint has excellent impact resistance, mechanical properties and weather resistance, the paint is very suitable for furniture, has excellent anti-collision, anti-collision and anti-falling effect, and has wide application prospect.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0008] A kind of furniture paint, including the following components by weight: 45-52 parts of unsaturated polyester resin, 20-30 parts of waterborne polyurethane resin, 5-12 parts of waterborne fluorocarbon resin, 4-10 parts of modified montmorillonite, 4-10 parts of dipentaerythritol pentaacrylate, 2-5 parts of fluorosilicon modified acrylic ester, 2-5 parts of photoinitiator, 2-5 parts of silicon powder, 0.2-0.6 parts of leveling agent.

[0009] The application creatively combines the above raw materials, and under the synergistic effect of the unsaturated polyester resin as a matrix, the water-based polyurethane resin, the water-based fluorocarbon resin, the modified montmorillonite, the dipentaerythritol pentaacrylate, the fluorosilicon modified acrylate, the photoinitiator, the silicon powder and the leveling agent, a coating with excellent impact resistance, mechanical properties and weather resistance is obtained, and the coating is very suitable for furniture and has excellent anti-bump, anti-collision and anti-falling effects, and has a wide application prospect.

[0010] The unsaturated polyester resin as a matrix has moderate rigidity or elasticity after curing, can provide good mechanical properties and adhesion, the water-based polyurethane resin also has excellent elasticity, can absorb energy when impacted and reduce damage to the coating film, the fluorosilicon modified acrylate and the water-based fluorocarbon resin have excellent weather resistance and corrosion resistance, can significantly improve the weather resistance and impact resistance of the coating and increase the crosslinking density, and during the curing process, the unsaturated polyester resin and other components form a close three-dimensional crosslinking network structure, effectively improving the impact resistance, mechanical properties and weather resistance of the coating.

[0011] As a preferred embodiment of the application, the viscosity of the water-based polyurethane resin at 23 DEG C is 100-180 mPa s, and the solid content is 36-38 wt%, and especially, the water-based polyurethane resin with viscosity and solid content in this range can further improve the mechanical properties and impact resistance of the coating.

[0012] As a preferred embodiment of the application, the viscosity of the fluorosilicon modified acrylate at 25 DEG C is 700-2000 mPa s, and the solid content is 70-73 wt%.

[0013] As a preferred embodiment of the application, the fluorine content of the water-based fluorocarbon resin is 12-16 wt%, and the solid content is 45-50 wt%.

[0014] As a preferred embodiment of the application, the average particle size of the silicon powder is 0.5-5 mu m.

[0015] As a preferred embodiment of the application, the initiator includes at least one of photoinitiator 1173, photoinitiator 907, photoinitiator 819, photoinitiator ITX, photoinitiator OXE-2 and photoinitiator 784.

[0016] As a preferred embodiment of the application, the leveling agent includes at least one of acrylated polysiloxane, polyether modified polysiloxane, polysiloxane polyether copolymer and polysiloxane.

[0017] As a preferred embodiment of the application, the preparation method of the modified montmorillonite is as follows:

[0018] The montmorillonite is heat treated to obtain pretreated montmorillonite;

[0019] The pretreated montmorillonite, zinc oxide and silane coupling agent are added into nitric acid solution, stirred uniformly to obtain a precursor solution;

[0020] Methyl methacrylate and ethylene glycol dimethacrylate are added into the precursor solution, stirred at 75-90℃ for 3-6h, filtered and dried to obtain modified montmorillonite.

[0021] The montmorillonite is heat treated to effectively activate the montmorillonite, change its structure and improve its surface activity. The pretreated montmorillonite, zinc oxide and silane coupling agent are added into nitric acid solution to change its crystal structure and effectively improve the dispersion performance of the montmorillonite in the coating matrix, avoiding the agglomeration of the montmorillonite. Finally, the reaction product of methyl methacrylate and ethylene glycol dimethacrylate is coated on the surface of the montmorillonite. The modified montmorillonite is fully filled in the three-dimensional network structure formed by the resin matrix to form a dense filler filling network with the silicon powder, effectively improving the impact resistance, mechanical properties and weather resistance of the coating.

[0022] The inventors of the present application have found that the modified montmorillonite and the silicon powder have a significant synergistic effect in improving the impact resistance and mechanical properties of the coating. The modified montmorillonite is uniformly dispersed in the coating to form a barrier layer against impact and friction. The special layered structure of the montmorillonite disperses external force through slipping and deformation when impacted or worn, thereby improving the toughness of the coating and preventing cracks or peeling of the coating film due to local impact or wear. The modified montmorillonite and the silicon powder form a dense filler filling network, complement each other in the coating and form a double-reinforced structure, which helps the coating film to better disperse and absorb external energy when impacted. The combination of the montmorillonite and the silicon powder can improve the microstructure of the coating film. The montmorillonite enhances the flexibility and impact resistance of the coating layer by forming a layered network structure, and the silicon powder enhances the wear resistance of the coating layer by filling the pores of the coating film and improving the surface hardness. The synergistic effect of the two can improve the overall performance of the coating layer and enhance the impact resistance and mechanical properties.

[0023] As a preferred embodiment of the present application, the heat treatment temperature is 180-220℃ and the heat treatment time is 2-4h.

[0024] As a preferred embodiment of the present application, the weight ratio of the pretreated montmorillonite, zinc oxide, silane coupling agent and nitric acid solution is 1:(0.05-0.12):(0.01-0.03):(4-10).

[0025] The silane coupling agent includes at least one of gamma-aminopropyltrimethoxysilane and gamma-aminopropyltriethoxysilane.

[0026] The molar concentration of the nitric acid solution is 0.1-2 mol / L.

[0027] As a preferred embodiment of the present application, the weight ratio of the methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile and the precursor solution is (0.05-0.12):(0.05-0.12):(0.01-0.03):1.

[0028] The present application has the following advantages: (1) the present application uses unsaturated polyester resin as the matrix, and under the synergistic effect of waterborne polyurethane resin, waterborne fluorocarbon resin, modified montmorillonite, dipentaerythritol pentaacrylate, fluorosilicon modified acrylate, photoinitiator, silica powder and leveling agent, a coating with excellent impact resistance, mechanical properties and weather resistance is obtained, which is very suitable for furniture and has excellent anti-collision, anti-damage and anti-falling effects, and has a wide application prospect;

[0029] (2) the unsaturated polyester resin as the matrix in the present application forms a coating film with moderate rigidity or elasticity after curing, which can provide good mechanical properties and adhesion; the waterborne polyurethane resin also has excellent elasticity, which can absorb energy when impacted and reduce damage to the coating film; the fluorosilicon modified acrylate and the waterborne fluorocarbon resin have excellent weather resistance and corrosion resistance, which can significantly improve the weather resistance and impact resistance of the coating and increase the crosslinking density; during the curing process, the unsaturated polyester resin and other components form a tight three-dimensional crosslinking network structure, effectively improving the impact resistance, mechanical properties and weather resistance of the coating. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] In the present application, the technical features described in an open manner include both the closed technical solutions consisting of the listed features and the open technical solutions containing the listed features.

[0032] In the present application, when a numerical range is referred to, unless otherwise specified, the numerical range is considered to be continuous and to include the minimum and maximum values of the range, as well as every value between the minimum and maximum values. Further, when a range is referred to as an integer, every integer between the minimum and maximum values of the range is included. In addition, when multiple ranges are provided to describe a feature or characteristic, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood as including any and all sub-ranges subsumed therein.

[0033] In the present application, the specific dispersion, stirring treatment method is not particularly limited.

[0034] The raw materials used in the examples and comparative examples are described as follows:

[0035] Unsaturated polyester resin: from Changxing Chemical, brand 2126-AP.

[0036] Waterborne polyurethane resin-1: from Hao Yi New Material, viscosity at 23°C of 100 mPa·s, solid content of 36 wt%, brand R-620.

[0037] Waterborne polyurethane resin-2: from Hao Yi New Material, viscosity at 23°C of 180 mPa·s, solid content of 38 wt%, brand R-660.

[0038] Waterborne polyurethane resin-3: from Hao Yi New Material, viscosity at 23°C of 40 mPa·s, solid content of 32 wt%, brand R-9029.

[0039] Waterborne polyurethane resin-4: from Hao Yi New Material, viscosity at 23°C of 750 mPa·s, solid content of 40 wt%, brand R-9340.

[0040] Fluorosilicon modified acrylate-1: from Guangzhou Runao Chemical, viscosity at 25°C of 2000 mPa·s, solid content of 70 wt%, brand 8668.

[0041] Fluorosilicon modified acrylate-2: from Guangzhou Runao Chemical, viscosity at 25°C of 700 mPa·s, solid content of 73 wt%, brand 8638.

[0042] Fluorosilicon modified acrylate-3: from Guangzhou Runao Chemical, viscosity at 25°C of 2300 mPa·s, solid content of 100 wt%, brand 8658.

[0043] ​​​Waterborne fluorocarbon resin-1: from Changxing Chemical Industry, fluorine content of 12wt%, solid content of 50wt%, brand ETERSOL 4312.

[0044] Waterborne fluorocarbon resin-2: from Changxing Chemical Industry, fluorine content of 16wt%, solid content of 45wt%, brand ETERSOL 43201AF.

[0045] Dipentaerythritol pentaacrylate: conventional commercial product.

[0046] Photoinitiator: photoinitiator 1173, conventional commercial product.

[0047] Silicon powder-1: from Shanghai Xiantian New Material, average particle size of 0.5μm, brand XT-Si-04.

[0048] Silicon powder-2: from Shanghai Xiantian New Material, average particle size of 5μm, brand XT-Si-06.

[0049] Silicon powder-3: from Shanghai Xiantian New Material, average particle size of 0.1μm, brand XT-Si-03.

[0050] Silicon powder-4: from Shanghai Xiantian New Material, average particle size of 10μm, brand XT-Si-07.

[0051] Leveling agent: from Degussa, brand TEGO 270.

[0052] The component raw materials or instruments used in each embodiment and comparative example of the present application are conventional commercial raw materials or instruments unless otherwise specified, and the component raw materials used in each parallel experiment are the same.

[0053] Example 1

[0054] A coating for furniture, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of waterborne polyurethane resin-1, 10 parts of waterborne fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silicon powder-1, 0.2-0.6 parts of leveling agent.

[0055] The preparation method of the modified montmorillonite comprises the following steps:

[0056] (1) Montmorillonite with a particle size of 400 mesh is added to a muffle furnace, heated to 200℃ at a heating rate of 5℃ / min, and heat treated at 200℃ for 3h to obtain pretreated montmorillonite;

[0057] (2) the pretreated montmorillonite, zinc oxide with a particle size of 1250 mesh, and γ-aminopropyltrimethoxysilane are added into a 0.5 mol / L nitric acid solution, and stirred uniformly at a rotating speed of 200 rpm to obtain a precursor solution; the weight ratio of the pretreated montmorillonite, zinc oxide, silane coupling agent, and nitric acid solution is 1:0.1:0.02:5;

[0058] (3) methyl methacrylate, ethylene glycol dimethacrylate, and azobisisobutyronitrile are added into the precursor solution, and stirred at a rotating speed of 100 rpm at 85°C for 5 h, and then filtered and dried to obtain the modified montmorillonite; the weight ratio of the methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile, and precursor solution is 0.1:0.1:0.02:1.

[0059] The preparation method of the furniture paint comprises the following steps: uniformly mixing unsaturated polyester resin, water-based polyurethane resin, water-based fluorocarbon resin, modified montmorillonite, dipentaerythritol pentaacrylate, fluorosilicon modified acrylate, and silicon powder, then adding a photoinitiator and a leveling agent, and uniformly stirring to obtain the furniture paint.

[0060] Example 2

[0061] A furniture paint comprises the following components in parts by weight: 45 parts of unsaturated polyester resin, 30 parts of water-based polyurethane resin-1, 5 parts of water-based fluorocarbon resin-1, 10 parts of modified montmorillonite, 4 parts of dipentaerythritol pentaacrylate, 5 parts of fluorosilicon modified acrylate-1, 2 parts of a photoinitiator, 2 parts of silicon powder-1, and 0.2 parts of a leveling agent.

[0062] The preparation method of the modified montmorillonite comprises the following steps:

[0063] (1) montmorillonite with a particle size of 400 mesh is added into a muffle furnace, and heated at a temperature increasing rate of 5°C / min to 200°C, and then heat treated at 200°C for 3 h to obtain pretreated montmorillonite;

[0064] (2) the pretreated montmorillonite, zinc oxide with a particle size of 1250 mesh, and γ-aminopropyltrimethoxysilane are added into a 0.5 mol / L nitric acid solution, and stirred uniformly at a rotating speed of 200 rpm to obtain a precursor solution; the weight ratio of the pretreated montmorillonite, zinc oxide, silane coupling agent, and nitric acid solution is 1:0.1:0.02:5;

[0065] (3) methyl methacrylate, ethylene glycol dimethacrylate, and azobisisobutyronitrile are added into the precursor solution, and stirred at a rotating speed of 100 rpm at 85°C for 5 h, and then filtered and dried to obtain the modified montmorillonite; the weight ratio of the methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile, and precursor solution is 0.1:0.1:0.02:1.

[0066] The preparation method of the furniture paint comprises the following steps: uniformly mixing unsaturated polyester resin, water-based polyurethane resin, water-based fluorocarbon resin, modified montmorillonite, dipentaerythritol pentaacrylate, fluorosilicon modified acrylate, and silicon powder, then adding photoinitiator and leveling agent, and uniformly stirring to obtain the furniture paint.

[0067] Example 3

[0068] A furniture paint comprises the following components by weight: 52 parts of unsaturated polyester resin, 20 parts of water-based polyurethane resin-1, 12 parts of water-based fluorocarbon resin-1, 4 parts of modified montmorillonite, 10 parts of dipentaerythritol pentaacrylate, 2 parts of fluorosilicon modified acrylate-1, 5 parts of photoinitiator, 5 parts of silicon powder-1, and 0.6 parts of leveling agent.

[0069] The preparation method of the modified montmorillonite comprises the following steps:

[0070] (1) Montmorillonite with a particle size of 400 mesh is added to a muffle furnace, heated to 200℃ at a heating rate of 5℃ / min, and heat treated at 200℃ for 3h to obtain pretreated montmorillonite;

[0071] (2) The pretreated montmorillonite, zinc oxide with a particle size of 1250 mesh, and γ-aminopropyltrimethoxysilane are added to a 0.5mol / L nitric acid solution, and uniformly stirred at a stirring speed of 200rpm to obtain a precursor solution; the weight ratio of the pretreated montmorillonite, zinc oxide, silane coupling agent, and nitric acid solution is 1:0.1:0.02:5;

[0072] (3) Methyl methacrylate, ethylene glycol dimethacrylate, and azobisisobutyronitrile are added to the precursor solution, and stirred at a stirring speed of 100rpm at 85℃ for 5h, filtered, and dried to obtain the modified montmorillonite; the weight ratio of the methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile, and precursor solution is 0.1:0.1:0.02:1.

[0073] The preparation method of the furniture paint comprises the following steps: uniformly mixing unsaturated polyester resin, water-based polyurethane resin, water-based fluorocarbon resin, modified montmorillonite, dipentaerythritol pentaacrylate, fluorosilicon modified acrylate, and silicon powder, then adding photoinitiator and leveling agent, and uniformly stirring to obtain the furniture paint.

[0074] Example 4

[0075] Example 4 differs from example 1 in that example 4 uses an equal amount of water-based polyurethane resin-2 to replace water-based polyurethane resin-1, and the others are the same.

[0076] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-2, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silica powder-1, 0.2-0.6 parts of leveling agent.

[0077] Example 5

[0078] Example 5 differs from Example 1 in that Example 5 uses an equal amount of water-based polyurethane resin-3 to replace water-based polyurethane resin-1, and the others are the same.

[0079] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-3, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silica powder-1, 0.2-0.6 parts of leveling agent.

[0080] Example 6

[0081] Example 6 differs from Example 1 in that Example 6 uses an equal amount of water-based polyurethane resin-4 to replace water-based polyurethane resin-1, and the others are the same.

[0082] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-4, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silica powder-1, 0.2-0.6 parts of leveling agent.

[0083] Example 7

[0084] Example 7 differs from Example 1 in that Example 7 uses an equal amount of fluorosilicon modified acrylate-2 to replace fluorosilicon modified acrylate-1, and the others are the same.

[0085] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-2, 4 parts of photoinitiator, 4 parts of silica powder-1, 0.2-0.6 parts of leveling agent.

[0086] Example 8

[0087] Example 8 differs from Example 1 in that Example 8 uses an equal amount of fluorosilicon modified acrylate-3 to replace fluorosilicon modified acrylate-1, and the others are the same.

[0088] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-3, 4 parts of photoinitiator, 4 parts of silicon powder-1, 0.2-0.6 parts of leveling agent.

[0089] Example 9

[0090] Example 9 differs from Example 1 in that Example 9 uses an equal amount of water-based fluorocarbon resin-2 to replace water-based fluorocarbon resin-1, and the others are the same.

[0091] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-2, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silicon powder-1, 0.2-0.6 parts of leveling agent.

[0092] Example 10

[0093] Example 10 differs from Example 1 in that Example 10 uses an equal amount of silicon powder-2 to replace silicon powder-1, and the others are the same.

[0094] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silicon powder-2, 0.2-0.6 parts of leveling agent.

[0095] Example 11

[0096] Example 11 differs from Example 1 in that Example 11 uses an equal amount of silicon powder-3 to replace silicon powder-1, and the others are the same.

[0097] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silicon powder-3, 0.2-0.6 parts of leveling agent.

[0098] Example 12

[0099] Example 12 differs from Example 1 in that Example 12 uses an equal amount of silicon powder-4 to replace silicon powder-1, and the others are the same.

[0100] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silica powder-4, 0.2-0.6 parts of leveling agent.

[0101] Comparative Example 1

[0102] Comparative Example 1 differs from Example 1 in that Comparative Example 1 uses montmorillonite instead of modified montmorillonite, and the others are the same.

[0103] A furniture paint, comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of water-based polyurethane resin-1, 10 parts of water-based fluorocarbon resin-1, 8 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 4 parts of silica powder-4, 0.2-0.6 parts of leveling agent.

[0104] Comparative Example 2

[0105] Comparative Example 2 differs from Example 1 in that the preparation method of the modified montmorillonite in Comparative Example 2 is different from that in Example 1, and the others are the same.

[0106] The preparation method of the modified montmorillonite comprises the following steps:

[0107] (1) The montmorillonite with a particle size of 400 mesh is added to a muffle furnace, heated to 200℃ at a heating rate of 5℃ / min, and heat treated at 200℃ for 3h to obtain pretreated montmorillonite;

[0108] (2) The pretreated montmorillonite, zinc oxide with a particle size of 1250 mesh, and γ-aminopropyltrimethoxysilane are added to a 0.5mol / L nitric acid solution, stirred uniformly at a speed of 200rpm to obtain a precursor solution, filtered, and dried to obtain the modified montmorillonite; the weight ratio of the pretreated montmorillonite, zinc oxide, silane coupling agent, and nitric acid solution is 1:0.1:0.02:5.

[0109] Comparative Example 3

[0110] Comparative Example 3 differs from Example 1 in that the preparation method of the modified montmorillonite in Comparative Example 3 is different from that in Example 1, and the others are the same.

[0111] The preparation method of the modified montmorillonite comprises the following steps:

[0112] (1) The montmorillonite with a particle size of 400 mesh is added to a 0.5mol / L nitric acid solution, stirred uniformly at a speed of 200rpm to obtain a precursor solution; the weight ratio of the montmorillonite and the nitric acid solution is 1:5;

[0113] (2) Methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile were added into the precursor solution, stirred at 85°C for 5h at 100rpm, filtered, dried to obtain modified montmorillonite. The weight ratio of methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile, precursor solution was 0.1:0.1:0.02:1.

[0114] Comparative Example 4

[0115] Comparative Example 4 differs from Example 1 in that an equal amount of modified montmorillonite is used to replace the silica powder, and the others are the same.

[0116] A furniture paint comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of waterborne polyurethane resin-1, 10 parts of waterborne fluorocarbon resin-1, 12 parts of modified montmorillonite, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 0.2-0.6 parts of leveling agent.

[0117] Comparative Example 5

[0118] Comparative Example 5 differs from Example 1 in that an equal amount of silica powder is used to replace the modified montmorillonite, and the others are the same.

[0119] A furniture paint comprising the following components by weight: 50 parts of unsaturated polyester resin, 26 parts of waterborne polyurethane resin-1, 10 parts of waterborne fluorocarbon resin-1, 6 parts of dipentaerythritol pentaacrylate, 4 parts of fluorosilicon modified acrylate-1, 4 parts of photoinitiator, 12 parts of silica powder-1, 0.2-0.6 parts of leveling agent.

[0120] Performance test

[0121] 1. Impact resistance test: according to the test method in GB / T1732-1993, the impact height of the weight was gradually increased from 20cm (each time the increase is 0.5cm), the impact height when the crack length of the coating film is 1cm is tested, the higher the impact height, the higher the impact resistance.

[0122] 2. According to JG-T172-2014, the elongation at break and tensile strength are tested.

[0123] 3. Weather resistance is tested according to GB / T23987-2009, and the test time is 1000h.

[0124] Table 1

[0125]

[0126]

[0127] As shown in Table 1, the coating has excellent impact resistance, mechanical properties and weather resistance, and is very suitable for furniture, has excellent anti-collision, anti-collision and anti-falling effect, and has wide application prospect, wherein the impact height of the coating is ≥29.5 cm, the tensile strength is ≥4.5 MPa, the elongation at break is ≥390%, and the weather resistance test can be passed.

[0128] As shown in Comparative Example 1 and Comparative Examples 1-3, the modified montmorillonite prepared by the preparation method of the present application can significantly improve the impact resistance and mechanical properties of the coating.

[0129] As shown in Comparative Example 1 and Comparative Examples 4-5, the modified montmorillonite and the silicon powder of the present application have a significant synergistic effect on improving the impact resistance and mechanical properties of the coating. Under the synergistic effect of the two, the impact resistance and mechanical properties of the coating are significantly improved.

[0130] As shown in Comparative Examples 1, 4-6, the waterborne polyurethane resin with a viscosity of 100-180 mPa·s at 23℃ and a solid content of 36-38wt% is used in the present application, which further improves the impact resistance and mechanical properties of the coating.

[0131] As shown in Comparative Example 1, 7-8, by using a water-based fluorocarbon resin with a fluorine content of 12-16wt% and a solid content of 45-50wt%, the impact resistance and mechanical properties of the coating are further improved.

[0132] As shown in Comparative Example 1 and Examples 10-12, by using a silicon powder with an average particle size of 0.5-5μm, the impact resistance and mechanical properties of the coating are further improved.

[0133] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and not to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A paint for furniture, characterized by, The composition comprises the following components by weight: 45-52 parts of unsaturated polyester resin, 20-30 parts of water-based polyurethane resin, 5-12 parts of water-based fluorocarbon resin, 4-10 parts of modified montmorillonite, 4-10 parts of dipentaerythritol pentaacrylate, 2-5 parts of fluorosilicon modified acrylate, 2-5 parts of photoinitiator, 2-5 parts of silicon powder, 0.2-0.6 parts of leveling agent; The average particle size of the silicon powder is 0.5-5 μm; The preparation method of the modified montmorillonite is: The montmorillonite is heat treated to obtain pretreated montmorillonite; The pretreated montmorillonite, zinc oxide and silane coupling agent are added to a nitric acid solution, stirred uniformly to obtain a precursor solution; Methyl methacrylate, ethylene glycol dimethacrylate and azobisisobutyronitrile are added to the precursor solution, stirred at 75-90 ℃ for 3-6 h, filtered, dried to obtain the modified montmorillonite.

2. The furniture paint according to claim 1, characterized in that, The viscosity of the water-based polyurethane resin at 23 ℃ is 100-180 mPa·s, and the solid content is 36-38 wt%.

3. The furniture paint according to claim 1, characterized in that, The viscosity of the fluorosilicon modified acrylate at 25 ℃ is 700-2000 mPa·s, and the solid content is 70-73 wt%.

4. The furniture paint according to claim 1, characterized by The fluorine content of the water-based fluorocarbon resin is 12-16 wt%, and the solid content is 45-50 wt%.

5. The furniture paint according to claim 1, characterized in that, The photoinitiator comprises at least one of photoinitiator 1173, photoinitiator 907, photoinitiator 819, photoinitiator ITX, photoinitiator OXE-2 and photoinitiator 784; The leveling agent comprises at least one of acrylated polysiloxane, polysiloxane polyether copolymer and polysiloxane.

6. The furniture paint according to claim 1, characterized by The heat treatment temperature is 180-220 ℃, and the heat treatment time is 2-4 h.

7. The furniture paint according to claim 1, characterized by The weight ratio of the pretreated montmorillonite, zinc oxide, silane coupling agent and nitric acid solution is 1:(0.05-0.12):(0.01-0.03):(4-10); The silane coupling agent comprises at least one of γ-aminopropyltrimethoxysilane and γ-aminopropyltriethoxysilane; The molar concentration of the nitric acid solution is 0.1-2 mol / L.

8. The furniture paint according to claim 1, characterized by The weight ratio of the methyl methacrylate, ethylene glycol dimethacrylate, azobisisobutyronitrile and precursor solution is (0.05-0.12):(0.05-0.12):(0.01-0.03):1.

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