Environment-friendly high-solid-content waterborne polyurethane acrylate composite emulsion as well as preparation method and application thereof

Abstract

The invention provides an environment-friendly high-solid-content waterborne polyurethane acrylate composite emulsion as well as a preparation method and application thereof. The environment-friendly high-solid-content waterborne polyurethane acrylate composite emulsion comprises functional layered silicate, and the functional layered silicate is layered silicate modified by an anionic surfactant, a cationic surfactant and a hydroxyl-rich water-soluble polymer in a composite intercalation manner. The preparation method comprises the following steps of: (1) mixing: well mixing a functional montmorillonite modified polyurethane acrylate oligomer, a polyurethane acrylate oligomer, an acrylate monomer and water, heating, stirring in a stirrer, and naturally cooling to room temperature to obtain a component A; (2) well stirring a photoinitiator, a flatting agent and water at normal temperature to obtain a component B; and (3) mixing the component A and the component B, stirring well at normal temperature, standing for defoaming, and storing in a dark place to obtain the environment-friendly high-solid-content waterborne polyurethane acrylate composite emulsion. The environment-friendly high-solid-content waterborne polyurethane acrylate composite emulsion can be used for adhesives or coatings.

Description

technical field

[0001] The invention relates to the field of composite materials, and more specifically relates to an environment-friendly high-solid-content aqueous polyurethane acrylate composite emulsion and a preparation method and application thereof. Background technique

[0002] At present, water-based polyurethane acrylate resin is a safe and environmentally friendly new "green resin" that has developed rapidly in recent years. With the enhancement of people's environmental protection awareness and the tightening of environmental protection policies, the low-VOC environmental protection material water-based polyurethane acrylate resin has developed. It has broad prospects and has been widely used in the fields of coatings, adhesives, inks and wind power. However, the water resistance, mechanical strength, heat resistance and barrier properties of waterborne polyurethane acrylate resin are poor, so layered inorganic silicate fillers such as montmorillonite are often u...

Examples

preparation example Construction

[0035] According to the preparation method of the environment-friendly high solid content aqueous polyurethane acrylate composite emulsion of the present invention, comprise the following steps: (1) mixing: functional montmorillonite modified polyurethane acrylate oligomer, polyurethane acrylate oligomer , acrylate monomer and water are mixed evenly, heated to 60-65°C, stirred by a mixer at 500-800r / min for 30min, and then naturally cooled to room temperature to obtain component A; (2) photoinitiator, leveling agent and After the water is stirred evenly at room temperature, component B is obtained; (3) component A and component B are mixed, stirred evenly at room temperature, left standing for defoaming, and stored away from light to obtain an environmentally friendly high-solid content water-based polyurethane acrylate composite emulsion.

[0036] The environment-friendly high-solid content aqueous polyurethane acrylate composite emulsion according to the present invention can...

Embodiment 1

[0039] (1) Preparation of functional montmorillonite modified polyurethane acrylate oligomer:

[0040] (1) According to the number of parts by mass, weigh 10 parts of sodium montmorillonite, disperse it in 50 parts of water, first add 2 parts of dodecyltrimethylammonium chloride, stir and heat in the mixer for 1h, and the speed is 500 rpm / min, temperature 70°C, suction filtration, washing with deionized water, drying to obtain primary intercalation montmorillonite;

[0041] (2) Disperse the above-mentioned primary intercalated montmorillonite in 50 parts of water, add 6 parts of methacryloyloxyethyltrimethylammonium chloride in parts by mass, stir and heat in a mixer for 1 hour, and rotate at 500 rpm / min, temperature 60°C, suction filtration, deionized water washing, drying, to obtain secondary intercalation montmorillonite;

[0042] (3) Disperse the above-mentioned secondary intercalated montmorillonite in 50 parts of aqueous solution of polyvinyl alcohol with a concentrat...

Embodiment 2

[0056] (1) Preparation of functional montmorillonite modified polyurethane acrylate oligomer:

[0057] (1) According to the number of parts by mass, weigh 20 parts of sodium montmorillonite, disperse in 50 parts of water, first add 4 parts of dodecyltrimethylammonium chloride, stir and heat in the mixer for 2 hours, the speed is 800 rpm min, temperature 80°C, suction filtration, deionized water washing, drying, to obtain primary intercalation montmorillonite;

[0058] (2) Disperse the above-mentioned primary intercalation montmorillonite in 50 parts of water, add 8 parts of methacryloyloxyethyltrimethylammonium chloride in parts by mass, stir and heat in a mixer for 2 hours, and the speed is 800 rpm / min, temperature 70°C, suction filtration, deionized water washing, drying, to obtain secondary intercalation montmorillonite;

[0059] (3) Disperse the above-mentioned secondary intercalation montmorillonite in 50 parts of aqueous solution of polyvinyl alcohol with a concentrati...

technical field

[0001] The invention relates to the field of composite materials, and more specifically relates to an environment-friendly high-solid-content aqueous polyurethane acrylate composite emulsion and a preparation method and application thereof. Background technique

[0002] At present, water-based polyurethane acrylate resin is a safe and environmentally friendly new "green resin" that has developed rapidly in recent years. With the enhancement of people's environmental protection awareness and the tightening of environmental protection policies, the low-VOC environmental protection material water-based polyurethane acrylate resin has developed. It has broad prospects and has been widely used in the fields of coatings, adhesives, inks and wind power. However, the water resistance, mechanical strength, heat resistance and barrier properties of waterborne polyurethane acrylate resin are poor, so layered inorganic silicate fillers such as montmorillonite are often u...

Examples

preparation example Construction

[0035] According to the preparation method of the environment-friendly high solid content aqueous polyurethane acrylate composite emulsion of the present invention, comprise the following steps: (1) mixing: functional montmorillonite modified polyurethane acrylate oligomer, polyurethane acrylate oligomer , acrylate monomer and water are mixed evenly, heated to 60-65°C, stirred by a mixer at 500-800r / min for 30min, and then naturally cooled to room temperature to obtain component A; (2) photoinitiator, leveling agent and After the water is stirred evenly at room temperature, component B is obtained; (3) component A and component B are mixed, stirred evenly at room temperature, left standing for defoaming, and stored away from light to obtain an environmentally friendly high-solid content water-based polyurethane acrylate composite emulsion.

[0036] The environment-friendly high-solid content aqueous polyurethane acrylate composite emulsion according to the present invention can...

Embodiment 1

[0039] (1) Preparation of functional montmorillonite modified polyurethane acrylate oligomer:

[0040] (1) According to the number of parts by mass, weigh 10 parts of sodium montmorillonite, disperse it in 50 parts of water, first add 2 parts of dodecyltrimethylammonium chloride, stir and heat in the mixer for 1h, and the speed is 500 rpm / min, temperature 70°C, suction filtration, washing with deionized water, drying to obtain primary intercalation montmorillonite;

[0041] (2) Disperse the above-mentioned primary intercalated montmorillonite in 50 parts of water, add 6 parts of methacryloyloxyethyltrimethylammonium chloride in parts by mass, stir and heat in a mixer for 1 hour, and rotate at 500 rpm / min, temperature 60°C, suction filtration, deionized water washing, drying, to obtain secondary intercalation montmorillonite;

[0042] (3) Disperse the above-mentioned secondary intercalated montmorillonite in 50 parts of aqueous solution of polyvinyl alcohol with a concentrat...

Embodiment 2

[0056] (1) Preparation of functional montmorillonite modified polyurethane acrylate oligomer:

[0057] (1) According to the number of parts by mass, weigh 20 parts of sodium montmorillonite, disperse in 50 parts of water, first add 4 parts of dodecyltrimethylammonium chloride, stir and heat in the mixer for 2 hours, the speed is 800 rpm min, temperature 80°C, suction filtration, deionized water washing, drying, to obtain primary intercalation montmorillonite;

[0058] (2) Disperse the above-mentioned primary intercalation montmorillonite in 50 parts of water, add 8 parts of methacryloyloxyethyltrimethylammonium chloride in parts by mass, stir and heat in a mixer for 2 hours, and the speed is 800 rpm / min, temperature 70°C, suction filtration, deionized water washing, drying, to obtain secondary intercalation montmorillonite;

[0059] (3) Disperse the above-mentioned secondary intercalation montmorillonite in 50 parts of aqueous solution of polyvinyl alcohol with a concentrati...

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