Water-based uv photocureable coating and preparation method thereof

Abstract

The invention relates to the field of photocureable coatings, and particularly discloses a water-based uv photocureable coating and a preparation method thereof. The water-based uv photocureable coating is prepared from the following components in parts by weight: 70 to 90 parts of water-based aliphatic polyurethane acrylate oligomer emulsion, 6 to 10 parts of a coalescing agent, 1 to 3 parts of a photoinitiator, 1 to 4 parts of a modification additive, 3 to 5 parts of a cosolvent, 10 to 12 parts of reinforced fibers and 6 to 10 parts of deionized water. The preparation method comprises the steps of mixing the modification additive, the cosolvent and 70% of the formula amount of deionized water according to the ratio, adding the reinforced fibers, uniformly stirring, then adding the aqueous aliphatic polyurethane acrylate oligomer emulsion, uniformly stirring, mixing the photoinitiator, the coalescing agent and the residual formula amount of deionized water according to the formula amount, and adjusting the pH and viscosity to obtain the finished product. The water-based uv photocureable coating disclosed by the invention has the advantage of difficulty in cracking.

Description

technical field

[0001] The application relates to the field of photocurable coatings, more specifically, it relates to a water-based uv photocurable coating and its preparation method Background technique

[0002] Light-curing coatings, also known as photosensitive coatings, use ultraviolet light as the energy source for coating curing, also known as UV-curing coatings. It can quickly cure into a film on flammable substrates such as paper, plastic, leather and wood without heating. 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, hot air, infrared, microwave, etc. should be used to dry the water first, and the coatings should be pre-dried;

[0004] However, during the pre-d...

Examples

Embodiment 1

[0057] A water-based uv light-curing coating, including 80kg of water-based aliphatic urethane acrylate oligomer emulsion, 8kg of film-forming aids, 2kg of photoinitiators, 1kg of leveling agents, 2kg of wetting agents, 1kg of defoamers, and 3kg of glycerin , Strengthening fiber 10kg, deionized water 8kg.

[0058] The 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 following method to prepare:

[0060] Activation of wood fibers: Soak wood fibers in a sodium hydroxide solution with a pH of 13 for 24 hours.

[0061] The preparation of conditioner: by proportioning, leveling agent, wetting agent, defoamer, glycerin and the deionized water of 70% formula part are mixed to obtain mixed solution, and the wood fiber of formula part is pulled out from s...

Embodiment 2

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

Embodiment 3

[0070] The difference from Example 1 is that the amount of reinforcing fiber 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 photocurable coatings, more specifically, it relates to a water-based uv photocurable coating and its preparation method Background technique

[0002] Light-curing coatings, also known as photosensitive coatings, use ultraviolet light as the energy source for coating curing, also known as UV-curing coatings. It can quickly cure into a film on flammable substrates such as paper, plastic, leather and wood without heating. 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, hot air, infrared, microwave, etc. should be used to dry the water first, and the coatings should be pre-dried;

[0004] However, during the pre-d...

Examples

Embodiment 1

[0057] A water-based uv light-curing coating, including 80kg of water-based aliphatic urethane acrylate oligomer emulsion, 8kg of film-forming aids, 2kg of photoinitiators, 1kg of leveling agents, 2kg of wetting agents, 1kg of defoamers, and 3kg of glycerin , Strengthening fiber 10kg, deionized water 8kg.

[0058] The 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 following method to prepare:

[0060] Activation of wood fibers: Soak wood fibers in a sodium hydroxide solution with a pH of 13 for 24 hours.

[0061] The preparation of conditioner: by proportioning, leveling agent, wetting agent, defoamer, glycerin and the deionized water of 70% formula part are mixed to obtain mixed solution, and the wood fiber of formula part is pulled out from s...

Embodiment 2

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

Embodiment 3

[0070] The difference from Example 1 is that the amount of reinforcing fiber 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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