A kind of environment-friendly high solid content water-based polyurethane acrylate composite emulsion and its preparation method and use

Abstract

The invention provides an environment-friendly high-solid-content water-based polyurethane acrylate composite emulsion and a preparation method and application thereof. Environmentally friendly high solid content water-based polyurethane acrylate composite emulsion contains functional layered silicate, functional layered silicate is anionic surfactant, cationic surfactant and hydroxyl-rich water-soluble polymer composite intercalation modification. Sexual layered silicate. The preparation method includes the steps: (1) mixing: mixing the functional montmorillonite-modified urethane acrylate oligomer, urethane acrylate oligomer, acrylate monomer and water uniformly, heating up, and stirring with a mixer, Component A is obtained after natural cooling to room temperature; (2) Component B is obtained after the photoinitiator, leveling agent and water are uniformly stirred at room temperature; (3) Component A and component B are mixed and stirred uniformly at room temperature, It is allowed to stand to defoaming, and stored in the dark to obtain an environment-friendly high-solid content water-based polyurethane acrylate composite emulsion. The present invention can be used in adhesives or coatings.

Description

technical field

[0001] The invention relates to the field of composite materials, and more particularly, 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 urethane acrylate resin is a new safe and environmentally friendly "green resin" that has developed rapidly in recent years. With the enhancement of people's environmental awareness and the tightening of environmental protection policies, the development of water-based urethane acrylate resin, a low-VOC environmentally friendly material It has broad prospects and has been widely used in coatings, adhesives, inks and wind power. However, water-based polyurethane acrylate resin has poor water resistance, mechanical strength, heat resistance and barrier properties, so layered inorganic silicate fillers such as montmorillonite are often used for reinforcement and modification, but...

Examples

preparation example Construction

[0035] The preparation method of the environment-friendly high-solid-content water-based polyurethane acrylate composite emulsion according to the present invention comprises the following steps: (1) mixing: mixing functional montmorillonite-modified polyurethane acrylate oligomers, polyurethane acrylate oligomers , acrylate monomer and water are mixed evenly, the temperature is raised to 60-65 ° C, the mixer is stirred at 500-800 r / min for 30 minutes, and then naturally cooled to room temperature to obtain component A; (2) The photoinitiator, leveling agent and After the water is evenly stirred at room temperature, the component B is obtained; (3) the component A and the component B are mixed, stirred evenly at normal temperature, left to stand for defoaming, and stored in the dark to obtain an environmentally friendly high-solid content water-based polyurethane acrylate composite emulsion.

[0036] The environment-friendly high-solid content aqueous polyurethane acrylate comp...

Embodiment 1

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

[0040] (1) Weigh 10 parts of sodium-based montmorillonite in parts by mass, disperse in 50 parts of water, add 2 parts of dodecyl trimethyl ammonium chloride first, stir and heat in a mixer for 1h, rotating speed 500 rpm / min, the temperature is 70 °C, suction filtration, washing with deionized water, and drying to obtain primary intercalated montmorillonite;

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

[0042] (3) Disperse the above-mentioned secondary intercalated montmorillonite in 50 parts of aqueous solution of polyvinyl alcohol with a concentration of 6wt%, st...

Embodiment 2

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

[0057] (1) Weigh 20 parts of sodium-based montmorillonite in parts by mass, disperse in 50 parts of water, add 4 parts of dodecyl trimethyl ammonium chloride first, stir and heat in a mixer for 2h, rotating speed 800 rpm / min, the temperature is 80 °C, suction filtration, washing with deionized water, and drying to obtain primary intercalated montmorillonite;

[0058] (2) Disperse the above-mentioned primary intercalated montmorillonite in 50 parts of water, add 8 parts of methacryloyloxyethyltrimethyl ammonium chloride again by mass, stir and heat in a mixer for 2h, and rotate at 800 rpm / min, temperature 70°C, suction filtration, washing with deionized water, and drying to obtain secondary intercalated montmorillonite;

[0059] (3) Disperse the above-mentioned secondary intercalated montmorillonite in 50 parts of an aqueous solution of polyvinyl alcohol with a concentration of 6w...

technical field

[0001] The invention relates to the field of composite materials, and more particularly, 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 urethane acrylate resin is a new safe and environmentally friendly "green resin" that has developed rapidly in recent years. With the enhancement of people's environmental awareness and the tightening of environmental protection policies, the development of water-based urethane acrylate resin, a low-VOC environmentally friendly material It has broad prospects and has been widely used in coatings, adhesives, inks and wind power. However, water-based polyurethane acrylate resin has poor water resistance, mechanical strength, heat resistance and barrier properties, so layered inorganic silicate fillers such as montmorillonite are often used for reinforcement and modification, but...

Examples

preparation example Construction

[0035] The preparation method of the environment-friendly high-solid-content water-based polyurethane acrylate composite emulsion according to the present invention comprises the following steps: (1) mixing: mixing functional montmorillonite-modified polyurethane acrylate oligomers, polyurethane acrylate oligomers , acrylate monomer and water are mixed evenly, the temperature is raised to 60-65 ° C, the mixer is stirred at 500-800 r / min for 30 minutes, and then naturally cooled to room temperature to obtain component A; (2) The photoinitiator, leveling agent and After the water is evenly stirred at room temperature, the component B is obtained; (3) the component A and the component B are mixed, stirred evenly at normal temperature, left to stand for defoaming, and stored in the dark to obtain an environmentally friendly high-solid content water-based polyurethane acrylate composite emulsion.

[0036] The environment-friendly high-solid content aqueous polyurethane acrylate comp...

Embodiment 1

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

[0040] (1) Weigh 10 parts of sodium-based montmorillonite in parts by mass, disperse in 50 parts of water, add 2 parts of dodecyl trimethyl ammonium chloride first, stir and heat in a mixer for 1h, rotating speed 500 rpm / min, the temperature is 70 °C, suction filtration, washing with deionized water, and drying to obtain primary intercalated montmorillonite;

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

[0042] (3) Disperse the above-mentioned secondary intercalated montmorillonite in 50 parts of aqueous solution of polyvinyl alcohol with a concentration of 6wt%, st...

Embodiment 2

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

[0057] (1) Weigh 20 parts of sodium-based montmorillonite in parts by mass, disperse in 50 parts of water, add 4 parts of dodecyl trimethyl ammonium chloride first, stir and heat in a mixer for 2h, rotating speed 800 rpm / min, the temperature is 80 °C, suction filtration, washing with deionized water, and drying to obtain primary intercalated montmorillonite;

[0058] (2) Disperse the above-mentioned primary intercalated montmorillonite in 50 parts of water, add 8 parts of methacryloyloxyethyltrimethyl ammonium chloride again by mass, stir and heat in a mixer for 2h, and rotate at 800 rpm / min, temperature 70°C, suction filtration, washing with deionized water, and drying to obtain secondary intercalated montmorillonite;

[0059] (3) Disperse the above-mentioned secondary intercalated montmorillonite in 50 parts of an aqueous solution of polyvinyl alcohol with a concentration of 6w...

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