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A kind of water-based uv paint and preparation method thereof

A water-based and modified technology, applied in the field of UV paint manufacturing, can solve the problems of insufficient adhesion and hardness of water-based UV paint, slow drying speed, insufficient water resistance of the paint film, etc., to shorten the UV curing time, promote dispersion, shorten the Effect of UV curing time

Active Publication Date: 2022-03-22
安徽名士达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of water-based UV paint and preparation method thereof, to solve the insufficient adhesion and hardness of water-based UV paint, slow drying speed, insufficient water resistance of the paint film

Method used

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  • A kind of water-based uv paint and preparation method thereof
  • A kind of water-based uv paint and preparation method thereof
  • A kind of water-based uv paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Hyperbranched polyurethane acrylate emulsion is made through the following steps:

[0042] Step A: Add hexamethylene diisocyanate and N,N-dimethylformamide into a four-necked flask equipped with a stirring bar, a reflux condenser and nitrogen gas, and stir evenly. Heat the temperature of the reaction system to 73°C in the pot, and then use a constant pressure dropping funnel to drop the N,N-dimethylformamide solution containing terephthalic acid and catalyst A. After the addition, measure it every 20 minutes The NCO value of the reaction system, when the NCO value reaches 15.01%, the temperature of the reaction system is heated to 77 ° C, and then the glycerol is added dropwise with a constant pressure dropping funnel. After the addition, the reaction system is measured every 20 minutes. NCO value, when the NCO value is lower than 1%, cool to room temperature, wash with water 3 times, and dry in a vacuum oven at 40°C to obtain intermediate 1;

[0043] Step B. Add hexam...

Embodiment 2

[0050] The hyperbranched urethane acrylate emulsion is made through the following steps. With reference to the preparation steps of Example 1, the raw materials in each step and the amount of each raw material are shown in Table 2.

[0051] Table 2

[0052]

Embodiment 3

[0054] The hyperbranched urethane acrylate emulsion is made through the following steps. With reference to the preparation steps of Example 1, the raw materials in each step and the amount of each raw material are shown in Table 3.

[0055] table 3

[0056]

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Abstract

The invention discloses a water-based UV paint and a preparation method thereof, belonging to the technical field of UV paint manufacture. The water-based UV paint comprises the following raw materials in parts by weight: 20-40 parts of hyperbranched polyurethane acrylate emulsion, 20 parts of modified acrylate emulsion ‑40 parts, 15‑25 parts of absolute ethanol, 5‑15 parts of ethylene glycol butyl ether, 5‑10 parts of talcum powder, 1‑5 parts of photoinitiator, 0.1‑0.5 parts of defoamer, 0.1 part of amine neutralizer -0.5 parts. And the present invention has synthesized hyperbranched urethane acrylate with highly branched structure, and contains a large amount of terminal acrylate groups and end-capped double bonds in the molecule, which synergistically provides high UV curing speed and shortens UV curing time; the present invention The provided water-based UV paint has excellent adhesion and hardness, and the obtained paint film has excellent mechanical strength, as well as excellent water resistance, oil resistance and stain resistance.

Description

technical field [0001] The invention belongs to the technical field of UV paint manufacture, and in particular relates to a water-based UV paint and a preparation method thereof. Background technique [0002] UV paint generally refers to light-curing coatings, which are also called photosensitive coatings, which use ultraviolet light as the energy source for coating curing, also known as UV-curing coatings. Its characteristic is that it does not need heating and can quickly cure and form a film on flammable substrates such as paper, plastic, leather and wood. Water-based UV paint is a light-curing paint with water as the diluent. It does not contain organic solvents, is green and environmentally friendly, and it combines the advantages of water-based paints and light-curing paints. It has developed rapidly in recent years. [0003] But the performance of water-based UV paint has the following deficiencies at present: the adhesion and hardness of water-based UV paint are not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/16C09D133/12C08G18/32C08G18/67C08G18/73C08F8/42C08F220/14C08F220/18C08F220/24
CPCC09D175/16C09D133/16C08G18/3215C08G18/3206C08G18/672C08G18/73C08F8/42C08G2150/00C08F220/14C08F220/1802C08F220/24C08F2500/26C08L33/16C08L75/16
Inventor 吴浩关存州
Owner 安徽名士达新材料有限公司
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