A kind of water-based UV light-curing coating and preparation method thereof

Abstract

The application relates to the field of photocurable coatings, and specifically discloses a water-based UV photocurable coating and a preparation method thereof. The water-based uv light-curing coating, by weight, includes the following components: 70-90 parts of water-based aliphatic urethane acrylate oligomer emulsion, 6-10 parts of film-forming aid, 1-3 parts of photoinitiator, modified 1-4 parts of auxiliary agent, 3-5 parts of co-solvent, 10-12 parts of reinforced fiber, 6-10 parts of deionized water; the preparation method is: according to the proportion, modifying auxiliary agent, co-solvent and 70% of the formula Mix with deionized water, add reinforcing fiber, stir evenly, then add water-based aliphatic urethane acrylate oligomer emulsion, stir evenly, and mix in the photoinitiator, film-forming aid and deionized water of the remaining formula, Adjust the pH and viscosity to obtain the finished product. The water-based UV photocurable coating of the present application has the advantage of not being easy to crack.

Description

technical field

[0001] The application relates to the field of light-curing coatings, and more particularly, it relates to a water-based UV light-curing coating and a preparation method thereof Background technique

[0002] Light-curing coatings, also known as photosensitive coatings, use ultraviolet light as the energy for curing coatings, also known as UV-curing coatings. It does not require heating and cures rapidly to form films on flammable substrates such as paper, plastic, leather and wood. Water-based UV light-curing coatings combine the advantages of water-based and UV-curing technologies, solve the inherent shortcomings of low hardness and low adhesion of water-based coatings, and realize water-based environmental protection, low cost and high-efficiency applications.

[0003] In the drying process of water-based light-curing coatings, first use hot air, infrared, microwave, etc. to dry the water, and pre-dry the coating;

[0004] However, during the pre-drying s...

Examples

Embodiment 1

[0057] A water-based UV light-curing coating, comprising 80kg of water-based aliphatic polyurethane acrylate oligomer emulsion, 8kg of film-forming aid, 2kg of photoinitiator, 1kg of leveling agent, 2kg of wetting agent, 1kg of defoamer, and 3kg of glycerin , reinforced fiber 10kg, deionized water 8kg.

[0058] Reinforcing fibers include 6.25kg of wood fibers and 3.75kg of glass fibers. The average diameter of wood fibers is 25 μm, and the average length of wood fibers is 200 μm; the average diameter of glass fibers is 10 μm, and the average length is 400 μm.

[0059] Embodiment 1 adopts the following method to prepare:

[0060] Activation of wood fibers: The wood fibers were soaked in a pH 13 sodium hydroxide solution for 24 hours.

[0061] Preparation of conditioner: leveling agent, wetting agent, defoaming agent, glycerin and 70% of the deionized water of the formula are mixed to obtain a mixed solution, and the wood fiber of the formula is taken out from the sodium hydro...

Embodiment 2

[0068] The difference from Example 1 is that the amount of reinforcing fibers used in this application is different. The wood fiber used in this example is 6.76 kg, and the glass fiber is 3.24 kg.

Embodiment 3

[0070] The difference from Example 1 is that the amount of reinforcing fibers used in this application is different. The wood fiber used in this example is 5.41 kg, and the glass fiber is 4.59 kg.

technical field

[0001] The application relates to the field of light-curing coatings, and more particularly, it relates to a water-based UV light-curing coating and a preparation method thereof Background technique

[0002] Light-curing coatings, also known as photosensitive coatings, use ultraviolet light as the energy for curing coatings, also known as UV-curing coatings. It does not require heating and cures rapidly to form films on flammable substrates such as paper, plastic, leather and wood. Water-based UV light-curing coatings combine the advantages of water-based and UV-curing technologies, solve the inherent shortcomings of low hardness and low adhesion of water-based coatings, and realize water-based environmental protection, low cost and high-efficiency applications.

[0003] In the drying process of water-based light-curing coatings, first use hot air, infrared, microwave, etc. to dry the water, and pre-dry the coating;

[0004] However, during the pre-drying s...

Examples

Embodiment 1

[0057] A water-based UV light-curing coating, comprising 80kg of water-based aliphatic polyurethane acrylate oligomer emulsion, 8kg of film-forming aid, 2kg of photoinitiator, 1kg of leveling agent, 2kg of wetting agent, 1kg of defoamer, and 3kg of glycerin , reinforced fiber 10kg, deionized water 8kg.

[0058] Reinforcing fibers include 6.25kg of wood fibers and 3.75kg of glass fibers. The average diameter of wood fibers is 25 μm, and the average length of wood fibers is 200 μm; the average diameter of glass fibers is 10 μm, and the average length is 400 μm.

[0059] Embodiment 1 adopts the following method to prepare:

[0060] Activation of wood fibers: The wood fibers were soaked in a pH 13 sodium hydroxide solution for 24 hours.

[0061] Preparation of conditioner: leveling agent, wetting agent, defoaming agent, glycerin and 70% of the deionized water of the formula are mixed to obtain a mixed solution, and the wood fiber of the formula is taken out from the sodium hydro...

Embodiment 2

[0068] The difference from Example 1 is that the amount of reinforcing fibers used in this application is different. The wood fiber used in this example is 6.76 kg, and the glass fiber is 3.24 kg.

Embodiment 3

[0070] The difference from Example 1 is that the amount of reinforcing fibers used in this application is different. The wood fiber used in this example is 5.41 kg, and the glass fiber is 4.59 kg.

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