阅读说明：本技术 一种立体金属饰面的保温装饰一体板及其制造方法 (Heat-insulation and decoration integrated plate with three-dimensional metal facing and manufacturing method thereof ) 是由 陈团 江斌 吴银河 陈燕 徐凯 于 2020-07-10 设计创作，主要内容包括：本发明涉及一种立体金属饰面的保温装饰一体板及其制造方法,包括基板、保温板、清漆底漆层、造型漆层、有色底漆层和金属面漆层,所述的清漆底漆层、造型漆层、有色底漆层、金属面漆层依次覆盖于所述基板的一面上,基板的另一面与所述保温板冷压复合。本发明兼具保温功能和装饰功能,通过造型漆层使一体板呈现浮雕凹凸面效果,既增强了金属漆面的立体效果,更好地体现出立体金属质感,又能降低其镜面反射,减少光污染。(The invention relates to a heat-insulation and decoration integrated plate with a three-dimensional metal veneer and a manufacturing method thereof. The invention has the heat preservation function and the decoration function, and the integrated board has the relief concave-convex surface effect through the modeling paint layer, thereby not only enhancing the three-dimensional effect of the metal paint surface and better showing the three-dimensional metal texture, but also reducing the mirror reflection of the metal paint surface and reducing the light pollution.)

1. The utility model provides a heat preservation of three-dimensional metal veneer decorates intergral template which characterized in that: including base plate, heated board, varnish priming paint layer, molding paint layer, coloured priming paint layer and metal finish paint layer, varnish priming paint layer, molding paint layer, coloured priming paint layer, metal finish paint layer cover in proper order in the one side of base plate, the another side of base plate with the heated board is connected.

2. The insulated and decorated integrated board with three-dimensional metal facing according to claim 1, wherein: the substrate is a fiber-reinforced calcium silicate board or a cement fiber pressure board.

3. The three-dimensional metal-faced insulation decorative integrated board according to claim 1, wherein the varnish primer layer is a two-component water-based epoxy paint, the two-component water-based epoxy paint comprises a component A and a component B, and the component A comprises the following components in parts by weight: 85-90 parts of water-based epoxy emulsion, 0.10-0.15 part of defoaming agent, 0.15-0.2 part of wetting agent and 9.65-14.7 parts of deionized water; the component B is a water-based epoxy curing agent; the weight ratio of the component A to the component B is 1: 2; the molding paint layer is made of molding paint, the molding paint comprises master batch and sand, and the master batch comprises the following components in parts by weight: 35-40 parts of deionized water, 0.2-0.4 part of cellulose, 2.0-2.4 parts of a film forming additive, 0.2-0.35 part of a defoaming agent, 0.3-0.4 part of a dispersing agent, 0.15-0.2 part of a wetting agent, 0.1-0.4 part of a pH regulator, 15-20 parts of an inorganic pigment and filler, 0.3-0.4 part of bentonite, 1-3 parts of propylene glycol, 40-42 parts of an emulsion, 0.1-0.15 part of an alkali swelling thickener and 0.5-0.7 part of an antiseptic bactericide.

4. The insulated and decorated integrated board with three-dimensional metal facing according to claim 1, wherein: the colored primer layer is a two-component waterborne polyurethane coating and comprises a component C and a component D, wherein the component C comprises the following components in parts by weight: 20-28 parts of deionized water, 0.15-0.2 part of cellulose, 0.3-0.4 part of pH regulator, 0.5-0.8 part of dispersant, 0.3-0.5 part of base material wetting agent, 25-35 parts of inorganic pigment and filler, 35-40 parts of hydroxy acrylic emulsion, 5-6 parts of film forming additive, 0.15-0.2 part of defoaming agent, 1-1.3 parts of thickening agent and 0.1-0.2 part of antiseptic bactericide; the component D is hydrophilic modified HDI; the weight ratio of the component C to the component D is 8-10: 1.

5. the insulated and decorated integrated board with three-dimensional metal facing according to claim 1, wherein: the metal finish paint layer is a two-component waterborne polyurethane paint and comprises a component E and a component F, wherein the component E comprises the following components in parts by weight: 20-25 parts of deionized water, 0.15-0.2 part of cellulose, 0.3-0.5 part of pH regulator, 0.3-0.5 part of wetting agent, 55-60 parts of hydroxyl acrylic emulsion, 5-6 parts of film-forming assistant, 0.15-0.2 part of defoaming agent, 0.01-0.15 part of anticorrosive bactericide, 0.5-0.6 part of dispersing agent, 8-10 parts of waterborne aluminum paste and 0.8-1 part of thickening agent; the component F is hydrophilic modified HDI; the weight ratio of the component E to the component F is 6-7: 1; the waterborne aluminum paste is non-floating coated waterborne aluminum paste.

6. The manufacturing method of the heat-insulation and decoration integrated plate with the three-dimensional metal facing is characterized by comprising the following steps of:

S₁: sanding and dedusting the prefabricated substrate;

S₂: coating the prepared two-component water-based epoxy coating on a substrate, wherein the using amount of the two-component water-based epoxy coating is 0.12-0.15 kg/m²Drying for 12-36 hours at room temperature to form a varnish primer layer;

S₃: coating the prepared modeling paint on the varnish primer layer, wherein the using amount is 1.5-2 kg/m²Drying for 48-72 hours at room temperature to form a modeling layer with a three-dimensional structure;

S₄: coating the prepared two-component waterborne polyurethane coating on the modeling layer, wherein the using amount of the coating is 0.2-0.25 kg/m²Drying for 12-36 hours at room temperature to form a colored primer layer;

S₅: coating the prepared two-component waterborne polyurethane coating on the colored primer layer, wherein the using amount of the coating is 0.22-0.25 kg/m²Drying for 48-72 hours at room temperature to form a metal finish paint layer;

S₆: and (5) cold-pressing and compounding the heat-insulating plate and the substrate.

7. The method for manufacturing the three-dimensional metal-faced heat-insulating decorative integrated board as claimed in claim 6, wherein S is₂The preparation method of the two-component water-based epoxy coating in the step comprises the following steps: adding 85-90 parts of aqueous epoxy emulsion into a container, adding 0.10-0.15 part of defoaming agent and 0.15-0.2 part of wetting agent under medium-low speed stirring, and stirring for 5-10 minutes; adding 9.65-14.7 parts of deionized water, and uniformly stirring at medium and low speed to obtain a component A; and (3) mixing the component A and the component B which takes the water-based epoxy curing agent according to the weight ratio of 1:2, and mechanically stirring uniformly to obtain the two-component water-based epoxy coating.

8. The method for manufacturing the three-dimensional metal-faced heat-insulating decorative integrated board as claimed in claim 6, wherein S is₃The preparation method of the modeling paint in the step comprises the following steps: in a container addAdding 30-32 parts of deionized water, adding 0.2-0.4 part of cellulose, 2.0-2.4 parts of a film forming additive, 0.15-0.2 part of a defoaming agent, 0.3-0.4 part of a dispersing agent, 0.15-0.2 part of a wetting agent and 0.1-0.4 part of a pH regulator under medium-low speed stirring, and stirring for 5-10 minutes; sequentially adding 15-20 parts of inorganic pigment and filler and 0.3-0.4 part of bentonite, after high-speed dispersion, adding 1-3 parts of propylene glycol, 40-42 parts of emulsion, 0.05-0.15 part of defoaming agent, 0.1-0.15 part of alkali swelling thickener, 0.5-0.7 part of antiseptic bactericide and 5-8 parts of deionized water, and uniformly stirring at medium and low speed to obtain a master batch; mixing the master batch and sand in a ratio of not less than 1: 1 to obtain the modeling paint.

9. The method for manufacturing the three-dimensional metal-faced heat-insulating decorative integrated board as claimed in claim 6, wherein S is₄The preparation method of the two-component waterborne polyurethane coating comprises the following steps: adding 19-22 parts of deionized water and 0.15-0.2 part of cellulose into a container, and stirring at a medium-low speed for 5-10 minutes; adding 0.3-0.4 part of pH regulator, and stirring for 10-15 minutes; sequentially adding 0.3-0.5 part of a base material wetting agent, 0.5-0.8 part of a dispersing agent and 25-35 parts of an inorganic pigment and filler, reducing the stirring speed after high-speed dispersion, adding 35-40 parts of hydroxyl acrylic emulsion, 5-6 parts of a film forming additive, 0.15-0.2 part of a defoaming agent, 1-1.3 parts of a thickening agent, 0.1-0.2 part of an antiseptic bactericide and 1-6 parts of deionized water, and uniformly stirring at medium and low speeds to obtain a component C; and (3) mixing the component C with a component D which is hydrophilic modified HDI according to the weight ratio of 8-10: 1 preparing to obtain S₄The two-component waterborne polyurethane coating is described.

10. The method for manufacturing the three-dimensional metal-faced heat-insulating decorative integrated board as claimed in claim 6, wherein S is₅The preparation method of the two-component waterborne polyurethane coating comprises the following steps: adding 9-11 parts of deionized water, 0.5-0.6 part of dispersing agent and 8-10 parts of waterborne aluminum paste into a clean container, uniformly stirring at low speed, and soaking for 2-3 hours to prepare a waterborne aluminum paste soaking solution; adding 10-11 parts of deionized water and 0.15-0.2 part of cellulose into another container, and stirring at a medium-low speed for 2-5 minutes; adding pH regulator 03-0.5 part by weight, and stirring for 5-10 minutes; adding 0.3-0.5 part of wetting agent, 55-60 parts of hydroxyl acrylic emulsion, 5-6 parts of film forming additive, 0.15-0.2 part of defoaming agent, 0.1-0.15 part of antiseptic bactericide, 0.8-1 part of thickening agent, 1-3 parts of deionized water and a prepared aqueous aluminum paste soaking solution, and uniformly stirring at medium and low speed to obtain a component E; and (3) mixing the component E with a component F containing hydrophilic modified HDI according to the weight ratio of 6-7: 1 preparing to obtain S₅The two-component waterborne polyurethane coating.

Technical Field

The invention relates to the technical field of building materials, in particular to a heat-preservation and decoration integrated plate with a three-dimensional metal facing and a manufacturing method thereof.

Background

In recent years, the integral plate is more and more concerned and emphasized in the field of building materials, the integral plate occupies a larger proportion in the outer wall of a building, and the metal-like veneer integral plate is very popular because of having metal texture. Most are plane imitative aluminum plate metal veneer intergral template in the existing market, however this kind of intergral template is installed and can produce very big specular reflection on the building outer wall, and the sunshine dazzles down, and the unaided eye can't be directly viewed, causes the puzzlement to near resident, and what is more, leads to the fact certain potential safety hazard to the vehicle of traveling on near road.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a thermal insulation and decoration integrated board with a three-dimensional metal facing and a manufacturing method thereof, which has both thermal insulation and decoration functions, and can make the integrated board exhibit relief concave-convex effects, thereby enhancing the three-dimensional effect of the metal painted surface, better exhibiting three-dimensional metal texture, reducing mirror reflection thereof, and reducing light pollution.

In order to achieve the purpose, the invention discloses a heat-insulation and decoration integrated plate with a three-dimensional metal veneer, which comprises a substrate, a heat-insulation plate, a varnish primer layer, a modeling paint layer, a colored primer layer and a metal finish paint layer, wherein the varnish primer layer, the modeling paint layer, the colored primer layer and the metal finish paint layer are sequentially covered on one surface of the substrate, and the other surface of the substrate is connected with the heat-insulation plate.

Preferably, the substrate is a fiber-reinforced calcium silicate board or a cement fiber pressure board.

Preferably, the varnish primer layer is a two-component water-based epoxy coating which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 85-90 parts of water-based epoxy emulsion, 0.10-0.15 part of defoaming agent, 0.15-0.2 part of wetting agent and 9.65-14.7 parts of deionized water; the component B is a water-based epoxy curing agent; the weight ratio of the component A to the component B is 1: 2.

preferably, the moulding paint layer is made of moulding paint, the moulding paint comprises master batch and sand, and the master batch comprises the following components in parts by weight: 35-40 parts of deionized water, 0.2-0.4 part of cellulose, 2.0-2.4 parts of a film forming additive, 0.2-0.35 part of a defoaming agent, 0.3-0.4 part of a dispersing agent, 0.15-0.2 part of a wetting agent, 0.1-0.4 part of a pH regulator, 15-20 parts of an inorganic pigment and filler, 0.3-0.4 part of bentonite, 1-3 parts of propylene glycol, 40-42 parts of an emulsion, 0.1-0.15 part of an alkali swelling thickener and 0.5-0.7 part of an antiseptic bactericide.

Preferably, the colored primer layer is a two-component waterborne polyurethane coating and comprises a component C and a component D, wherein the component C comprises the following components in parts by weight: 20-28 parts of deionized water, 0.15-0.2 part of cellulose, 0.3-0.4 part of pH regulator, 0.5-0.8 part of dispersant, 0.3-0.5 part of base material wetting agent, 25-35 parts of inorganic pigment and filler, 35-40 parts of hydroxy acrylic emulsion, 5-6 parts of film forming additive, 0.15-0.2 part of defoaming agent, 1-1.3 parts of thickening agent and 0.1-0.2 part of antiseptic bactericide; the component D is hydrophilic modified HDI; the weight ratio of the component C to the component D is 8-10: 1.

preferably, the metal finish paint layer is a two-component waterborne polyurethane paint and comprises an E component and an F component, wherein the E component comprises the following components in parts by weight: 20-25 parts of deionized water, 0.15-0.2 part of cellulose, 0.3-0.5 part of pH regulator, 0.3-0.5 part of wetting agent, 55-60 parts of hydroxyl acrylic emulsion, 5-6 parts of film-forming assistant, 0.15-0.2 part of defoaming agent, 0.1-0.15 part of antiseptic bactericide, 0.5-0.6 part of dispersing agent, 8-10 parts of waterborne aluminum paste and 0.8-1 part of thickening agent; the component F is hydrophilic modified HDI; the weight ratio of the component E to the component F is 6-7: 1.

preferably, the aqueous aluminum paste is non-leafing coated aqueous aluminum paste.

The invention also discloses a manufacturing method of the heat-insulation and decoration integrated plate with the three-dimensional metal veneer, which comprises the following steps:

S₁: sanding and dedusting the prefabricated substrate;

S₂: coating the prepared two-component water-based epoxy coating on a substrate, wherein the using amount of the two-component water-based epoxy coating is 0.12-0.15 kg/m²Drying for 12-36 hours at room temperature to form a varnish primer layer;

S₃: coating the prepared modeling paint on the varnish primer layer, wherein the using amount is 1.5-2 kg/m²Drying for 48-72 hours at room temperature to form a modeling layer with a three-dimensional structure;

S₄: coating the prepared two-component waterborne polyurethane coating on the modeling layer, wherein the using amount of the coating is 0.2-0.25 kg/m²Drying for 12-36 hours at room temperature to form a colored primer layer;

S₅: coating the prepared two-component waterborne polyurethane coating on the colored primer layer, wherein the using amount of the coating is 0.22-0.25 kg/m²Drying for 48-72 hours at room temperature to form a metal finish paint layer;

S₆: and (5) cold-pressing and compounding the heat-insulating plate and the substrate.

Preferably, S₂The preparation method of the two-component water-based epoxy coating in the step comprises the following steps: adding 85-90 parts of aqueous epoxy emulsion into a container, adding 0.10-0.15 part of defoaming agent and 0.15-0.2 part of wetting agent under medium-low speed stirring, and stirring for 5-10 minutes; adding 9.65-14.7 parts of deionized water, and uniformly stirring at medium and low speed to obtain a component A; and (3) mixing the component A and the component B which takes the water-based epoxy curing agent according to the weight ratio of 1:2, and mechanically stirring uniformly to obtain the two-component water-based epoxy coating.

Preferably, S₃The preparation method of the modeling paint in the step comprises the following steps: adding 30-32 parts of deionized water into a container, adding 0.2-0.4 part of cellulose, 2.0-2.4 parts of a film-forming additive, 0.15-0.2 part of a defoaming agent, 0.3-0.4 part of a dispersing agent, 0.15-0.2 part of a wetting agent and 0.1-0.4 part of a pH regulator under medium-low speed stirring, and stirring for 5-10 minutes; sequentially adding 15-20 parts of inorganic pigment and filler and 0.3-0.4 part of bentonite, after high-speed dispersion, adding 1-3 parts of propylene glycol, 40-42 parts of emulsion, 0.05-0.15 part of defoaming agent, 0.1-0.15 part of alkali swelling thickener, 0.5-0.7 part of antiseptic bactericide and 5-8 parts of deionized water, and uniformly stirring at medium and low speed to obtain a master batch; mixing the master batch and sand in a ratio of not less than 1: 1 to obtain the modeling paint.

Preferably, S₄The preparation method of the two-component waterborne polyurethane coating comprises the following steps: adding 19-22 parts of deionized water and 0.15-0.2 part of cellulose into a container, and stirring at a medium-low speed for 5-10 minutes; adding 0.3-0.4 part of pH regulator, and stirring for 10-15 minutes; sequentially adding 0.3-0.5 part of a base material wetting agent, 0.5-0.8 part of a dispersing agent and 25-35 parts of an inorganic pigment and filler, reducing the stirring speed after high-speed dispersion, adding 35-40 parts of hydroxyl acrylic emulsion, 5-6 parts of a film forming additive, 0.15-0.2 part of a defoaming agent, 1-1.3 parts of a thickening agent, 0.1-0.2 part of an antiseptic bactericide and 1-6 parts of deionized water, and uniformly stirring at medium and low speeds to obtain a component C; and (3) mixing the component C with a component D which is hydrophilic modified HDI according to the weight ratio of 8-10: 1 preparing to obtain S₄The two-component waterborne polyurethane coating is described.

Preferably, S₅The preparation method of the two-component waterborne polyurethane coating comprises the following steps: adding 9-11 parts of deionized water, 0.5-0.6 part of dispersing agent and 8-10 parts of waterborne aluminum paste into a clean container, uniformly stirring at low speed, and soaking for 2-3 hours to prepare a waterborne aluminum paste soaking solution; adding 10-11 parts of deionized water and 0.15-0.2 part of cellulose into another container, and stirring at a medium-low speed for 2-5 minutes; adding 0.3-0.5 part of pH regulator, and stirring for 5-10 minutes; adding 0.3-0.5 part of wetting agent, 55-60 parts of hydroxyl acrylic emulsion, 5-6 parts of film forming additive, 0.15-0.2 part of defoaming agent, 0.1-0.15 part of antiseptic bactericide and additive0.8-1 part of thickener, 1-3 parts of deionized water and a prepared aqueous aluminum paste soaking solution are stirred uniformly at a medium and low speed to obtain a component E; and (3) mixing the component E with a component F containing hydrophilic modified HDI according to the weight ratio of 6-7: 1 preparing to obtain S₅The two-component waterborne polyurethane coating.

The invention has the following beneficial effects:

the invention has the heat preservation function and the decoration function, and the integrated board presents the relief concave-convex surface effect through the modeling paint layer, thereby not only enhancing the three-dimensional effect of the metal paint surface and better presenting the three-dimensional metal texture, but also reducing the mirror reflection of the metal paint surface and reducing the light pollution.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.

The invention discloses a heat-insulation and decoration integrated plate with a three-dimensional metal veneer, which comprises a substrate, a heat-insulation plate, a varnish primer layer, a modeling paint layer, a colored primer layer and a metal finish paint layer, wherein the substrate is a fiber-reinforced calcium silicate plate or a cement fiber pressure plate. The varnish primer layer, the modeling paint layer, the colored primer layer and the metal finish paint layer are sequentially covered on one surface of the substrate, and the other surface of the substrate is in cold-pressing composite connection with the insulation board.

The varnish primer layer is made of two-component water-based epoxy coating, and the two-component water-based epoxy coating comprises a component A and a component B. The component A comprises the following components: e-51 type waterborne epoxy emulsion, an organic silicon defoamer, a wetting agent and deionized water. The component B adopts a waterborne epoxy modified amine curing agent. The weight ratio of the component A to the component B is 1: 2. the specific proportions of the two-component waterborne epoxy coating are detailed in table 1.

The molding paint layer is made of molding paint which comprises master batch and sand. The master batch comprises the following components: deionized water, hydroxyethyl cellulose, a C-12 film-forming assistant, an AP7010 defoamer, an SN-5040 dispersant, an EF-106 wetting agent, an AMP-95 type PH regulator, an inorganic pigment and filler, bentonite, propylene glycol, an emulsion, an alkali swelling thickener and an antiseptic bactericide; the inorganic pigment and filler used in the master batch is a mixture containing rutile type titanium dioxide and ground calcium carbonate. Quartz sand is selected as the sand; the specific formulation of the modeling paint is detailed in table 2.

The colored primer layer is made of a two-component aqueous polyurethane coating and comprises a component C and a component D. The component C comprises the following components: deionized water, hydrophobic modified cellulose, AMP-95 type PH regulator, dispersant, organosilicon base material wetting agent, inorganic pigment and filler, hydroxy acrylic emulsion, DPnB film-forming auxiliary agent, emulsified mineral oil defoamer, thickener and antiseptic bactericide; the inorganic pigment in the component C is a mixture containing rutile titanium dioxide, kaolin, barium sulfate and talcum powder; the thickener comprises an alkali swelling thickener and a polyurethane thickener. And the component D adopts hydrophilic modified HDI. The weight ratio of the component C to the component D is 8-10: 1. the specific mixture ratio of the two-component waterborne polyurethane coating in the colored primer layer is detailed in table 3.

The metallic topcoat layer is made of a two-component waterborne polyurethane coating comprising an E component and an F component. The component E comprises the following components: deionized water, hydrophobic modified cellulose, AMP-95 type PH regulator, an organic silicon substrate wetting agent, hydroxyl acrylic emulsion, DPnB film-forming auxiliary agent, an organic silicon defoamer, an anticorrosive bactericide, a dispersant, aqueous aluminum paste and a thickening agent; the thickener used in component E comprises an alkali swelling thickener and a polyurethane thickener. And the component F adopts hydrophilic modified HDI. The weight ratio of the component E to the component F is 6-7: 1. the specific proportions of the two-component waterborne polyurethane coating in the metal topcoat layer are detailed in table 4.

The invention also discloses a manufacturing method of the heat-preservation and decoration integrated plate with the three-dimensional metal veneer, which comprises the following steps:

S₁: sanding and dedusting the prefabricated substrate;

S₂: coating the prepared two-component water-based epoxy coating on a substrate, wherein the using amount of the two-component water-based epoxy coating is 0.12-0.15 kg/m²Drying for 24 hours at room temperature to form a varnish primer layer;

S₃: coating the prepared modeling paint on the varnish primer layer, wherein the using amount of the modeling paint is 1.5-2 kg/m²Drying for 48-72 hours at room temperature to form a modeling layer with a three-dimensional structure;

S₄: coating the prepared two-component waterborne polyurethane coating on the modeling layer, wherein the using amount of the coating is 0.2-0.25 kg/m²Drying for 24 hours at room temperature to form a colored primer layer;

S₅: coating the prepared two-component waterborne polyurethane coating on the colored primer layer, wherein the using amount of the coating is 0.22-0.25 kg/m²Drying for 48-72 hours at room temperature to form a metal finish paint layer;

S₆: and (5) cold-pressing and compounding the heat-insulating plate and the substrate.

S₂The preparation method of the two-component water-based epoxy coating in the steps comprises the following steps: adding the aqueous epoxy emulsion into a container, adding the defoaming agent and the wetting agent under medium-low speed stirring, and stirring for 5-10 minutes; adding deionized water, and uniformly stirring at medium and low speed to obtain a component A; the component A and the component B are mixed mechanically and uniformly stirred according to the weight ratio of 1:2 to obtain the two-component water-based epoxy coating, and the using amount of the raw materials of the two-component water-based epoxy coating is detailed in table 1.

S₃The preparation method of the modeling paint in the steps comprises the following steps: adding deionized water into a container, adding cellulose, a film-forming auxiliary agent, a defoaming agent, a dispersing agent, a wetting agent and a pH regulator under medium-low-speed stirring, and stirring for 5-10 minutes; sequentially adding inorganic pigment and filler and bentonite, dispersing at a high speed until the fineness is qualified, adding propylene glycol, emulsion, defoaming agent, alkali swelling thickener, antiseptic bactericide and deionized water, and uniformly stirring at a medium-low speed to obtain a master batch; mixing the master batch and sand in a ratio of not less than 1: 1, and the raw materials of the double-modeling paint are used in the detailed amount shown in the table 2. For the molding paint, the number of the sand can be adjusted to be integrated, so that the three-dimensional molding can be adjusted, and the integrated plate can meet the three-dimensional diversified design.

S₄The preparation method of the two-component waterborne polyurethane coating comprises the following steps: adding deionized water and cellulose into a container, and stirring at a medium-low speed for 5-10 minutes; adding a pH regulator, and stirring for 10-15 minutes; sequentially adding a base material wetting agent, a dispersing agent and an inorganic pigment filler, dispersing at a high speed until the fineness is qualified, reducing the stirring speed, and adding a hydroxyl acrylic emulsion, a film-forming assistant, a defoaming agent 0, a thickening agent and an antisepticUniformly stirring the bactericide and deionized water at a medium and low speed to obtain a component C; and (3) mixing the component C and the component D according to the weight ratio of 8-10: 1, preparing the required two-component waterborne polyurethane coating, wherein the using amount of the raw materials of the two-component waterborne polyurethane coating in the step is detailed in a table 3.

S₅The preparation method of the two-component waterborne polyurethane coating comprises the following steps: adding deionized water, a dispersing agent and aqueous aluminum paste into a clean container, uniformly stirring at a low speed, and soaking for 2-3 hours to prepare an aqueous aluminum paste soaking solution; adding deionized water and cellulose into another container, and stirring at a medium-low speed for 2-5 minutes; adding a pH regulator, and stirring for 5-10 minutes; adding a wetting agent, a hydroxyl acrylic emulsion, a film forming auxiliary agent, a defoaming agent, an anticorrosive bactericide, a thickening agent, deionized water and a pre-prepared aqueous aluminum paste soaking solution, and uniformly stirring at a medium and low speed to obtain a component E; and (3) mixing the component E and the component F according to the weight ratio of 6-7: 1, preparing the required two-component waterborne polyurethane coating, wherein the using amount of the raw materials of the two-component waterborne polyurethane coating in the step is detailed in a table 4.

Three samples were prepared for each set of examples with reference to the above steps and the specific amounts of each ingredient in tables 1 to 4, and the evaluation of each sample is shown in table 5.

TABLE 1

TABLE 2

TABLE 3

TABLE 4

TABLE 5

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.