CN105331279A

CN105331279A - Water-borne UV paint and preparation method thereof

Info

Publication number: CN105331279A
Application number: CN201510937909.4A
Authority: CN
Inventors: 刘春峰; 沙世强; 于海舒
Original assignee: SHENYANG SHUNFENG METRO BUILDING MATERIALS Co Ltd
Current assignee: Liaoning Shunfeng New Material Technology Co.,Ltd.
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-02-17
Anticipated expiration: 2035-12-16
Also published as: CN105331279B

Abstract

The invention provides water-borne UV paint and a preparation method thereof. The water-borne UV paint is prepared from, by mass, 25%-35% of urethane acrylate, 20%-30% of epoxy acrylate, 5%-10% of water-borne hyperbranched polyurethane, 5%-10% of fluorocarbon resin, 5%-15% of photoinitiator, 2%-5% of dispersing agent and 2%-10% of assistant. Urethane acrylate is fluorinated fluorinate containing urethane acrylate, epoxy acrylate is a mixture of bisphenol A epoxy acrylate and epoxy acrylate epoxy tetrapropylene acid ester, and the auxiliary is a mixture of an organic silicone flatting agent and a fluorocarbon modified flatting agent. The preparation method of the water-borne UV paint is simple in process, the prepared paint has good attachment performance and water-repellent and water-resistant performance, compared with traditional UV paint, the water-borne UV paint is higher in curing speed, and bubbles generated in the curing process are avoided. Meanwhile, the corrosion resistance, aging resistance and acid-alkali resistance of the paint are remarkably improved, and the water-borne UV paint is ideal metal and woodware surface paint.

Description

A kind of waterborne UV coating and preparation method thereof

Technical field

The present invention relates to technical field of coatings, particularly relate to a kind of waterborne UV coating and preparation method thereof.

Background technology

Photo-cured coating (UV coating) is a kind of new coating of efficient, energy-saving and environmental protection, and traditional UV coating adopts reactive thinner to regulate stream to become, and causes coating to have strong impulse smell, and produces detrimentally affect to the physicals of film.Relative to traditional UV coating, waterborne UV coating not only achieves low VOC, and has no irritating odor in solidification process, to constructor and terminal user without actual bodily harm.So the oligopolymer of high molecular weight can be used in waterborne radiation curable coating to replace reactive thinner thus to overcome this shortcoming.But now UV coating still exists some shortcomings, such as: (1) unsuitable coated substrate, and because its sticking power is undesirable after coating, coating easily comes off; (2) anticorrosive, ageing-resistant and acid-proof alkaline is poor, widely used requirement can not be reached.

Summary of the invention

For the problems referred to above, the invention provides and a kind of there is waterborne UV coating of good adhesion and coating property, more anticorrosive, ageing-resistant and acid-proof alkaline and preparation method thereof.

For realizing above-mentioned purpose of the present invention, the invention provides a kind of waterborne UV coating, be made up of the raw material of following mass percent: urethane acrylate 25% ~ 35%, epoxy acrylate 20% ~ 30%, aqueous hyperbranched urethane 5% ~ 10%, fluorocarbon resin 5% ~ 10%, light trigger 5% ~ 15%, dispersion agent 2% ~ 5%, auxiliary agent 2% ~ 10%.

The present invention also provides a kind of preparation method of waterborne UV coating, comprises the following steps.

Step 1, by mass percentage by the urethane acrylate of 25% ~ 35%, the epoxy acrylate of 20% ~ 30% and 5% ~ 10% aqueous hyperbranched urethane join in the container of specifying, carry out mechanical stirring 2 ~ 5h, these three kinds of materials are fully mixed, and then add the fluorocarbon resin powder of 5% ~ 10% and the dispersion agent of 2% ~ 5% carries out mechanical stirring 5 ~ 10h again, make fluorocarbon resin powder in the solution dispersed, obtain homogeneous solution.

Step 2, by the light trigger of 5% ~ 15% and 2% ~ 10% auxiliary agent, join in step 1 gained homogeneous solution, continue stirring 1 ~ 2h, until stir, obtain UV coating.

Described urethane acrylate is fluorochemical urethane acrylate.

Described epoxy acrylate is the mixture of bisphenol A epoxy acrylate and aliphatic epoxy tetraacrylate, and the mass ratio of described bisphenol A epoxy acrylate and aliphatic epoxy tetraacrylate is 4:5 ~ 9.

Described light trigger is the one in alpha, alpha-dimethyl oxygen base-α-phenyl acetophenone, 2,4,6-trimethylbenzoy-dipheny phosphine oxides, 2-hydroxy-2-methyl-1-[4-(2-hydroxyl-oxethyl) phenyl]-1-acetone, alpha-hydroxyalkyl benzophenone.

Described auxiliary agent is flow agent, and described flow agent is the mixture of silicone based flow agent and fluorine-carbon modified class flow agent, and the mass ratio of described silicone based flow agent and fluorine-carbon modified class flow agent is 5:2 ~ 4.

Compared with prior art beneficial effect of the present invention.

Waterborne UV coating provided by the invention and preparation method thereof, adopt fluorochemical urethane acrylate, make coating have higher water tolerance and alcohol resistance, levelling property is better, curing speed also obviously accelerates, after solidification, the surface of coating is more smooth simultaneously; Simultaneously, adding of the mixture of bisphenol-A epoxy acrylic resin and aliphatic epoxy tetraacrylate, the sticking power of this waterborne UV coating to matrix is not only made obviously to strengthen, and the stress of aliphatic acrylate when alleviating curing of coating shrinks, significant effect is played to the snappiness of film, shock-resistance; The glossiness adding raising solid content and paint film effectively of aqueous hyperbranched urethane and fullness ratio; Adding of fluorocarbon resin makes the shortcoming of traditional UV coating loss of properties on aging obtain obvious improvement, thus not only curing speed is faster to make this waterborne UV coating, avoid the generation of bubble in solidification process, and there is stronger anticorrosive, ageing-resistant and acid-proof alkaline, be the topcoating of a kind of ideal metal and woodenware.

Embodiment

The present invention is further described below in conjunction with specific embodiment.

Embodiment 1.

The present embodiment provides a kind of waterborne UV coating, is made up of the raw material of following mass percent: urethane acrylate 30%, epoxy acrylate 25%, aqueous hyperbranched urethane 10%, fluorocarbon resin 10%, light trigger 15%, dispersion agent 5%, auxiliary agent 5%.

Described urethane acrylate is fluorochemical urethane acrylate; Described epoxy acrylate is the bisphenol A epoxy acrylate of mass ratio 4:6 and the mixture of aliphatic epoxy tetraacrylate; Described auxiliary agent is the silicone based flow agent of mass ratio 5:3 and the mixture of fluorine-carbon modified class flow agent; Described light trigger is alpha, alpha-dimethyl oxygen base-α-phenyl acetophenone.

The present embodiment also provides a kind of preparation method of waterborne UV coating, comprises the following steps.

Step 1, by mass percentage by the fluorochemical urethane acrylate of 30%, the epoxy acrylate of 25% and 10% aqueous hyperbranched urethane join in the container of specifying, carry out mechanical stirring 4h, these three kinds of materials are fully mixed, and then add the fluorocarbon resin powder of 10% and the dispersion agent of 5% carries out mechanical stirring 10h again, make fluorocarbon resin powder in the solution dispersed, obtain homogeneous solution.

Step 2, by the alpha, alpha-dimethyl oxygen base-α-phenyl acetophenone of 15% and 5% auxiliary agent, join in step 1 gained homogeneous solution, continue to stir 2h, until stir, obtain UV coating.

Embodiment 2.

The present embodiment provides a kind of waterborne UV coating, is made up of the raw material of following mass percent: urethane acrylate 35%, epoxy acrylate 23%, aqueous hyperbranched urethane 7%, fluorocarbon resin 10%, light trigger 12%, dispersion agent 3%, auxiliary agent 10%.

Embodiment 3.

The present embodiment provides a kind of waterborne UV coating, is made up of the raw material of following mass percent: urethane acrylate 28%, epoxy acrylate 30%, aqueous hyperbranched urethane 7%, fluorocarbon resin 8%, light trigger 13%, dispersion agent 4%, auxiliary agent 10%.

Claims

1. a waterborne UV coating, it is characterized in that, be made up of following raw material: urethane acrylate 25% ~ 35%, epoxy acrylate 20% ~ 30%, aqueous hyperbranched urethane 5% ~ 10%, fluorocarbon resin 5% ~ 10%, light trigger 5% ~ 15%, dispersion agent 2% ~ 5%, auxiliary agent 2% ~ 10%.

2. waterborne UV coating as claimed in claim 1, it is characterized in that, described urethane acrylate is fluorochemical urethane acrylate.

3. waterborne UV coating as claimed in claim 1, it is characterized in that, described epoxy acrylate is the mixture of bisphenol A epoxy acrylate and aliphatic epoxy tetraacrylate, and the ratio of described bisphenol A epoxy acrylate and aliphatic epoxy tetraacrylate is 4:5 ~ 9.

4. waterborne UV coating as claimed in claim 1; it is characterized in that; described light trigger is alpha, alpha-dimethyl oxygen base-α-phenyl acetophenone, 2; one in 4,6-trimethylbenzoy-dipheny phosphine oxide, 2-hydroxy-2-methyl-1-[4-(2-hydroxyl-oxethyl) phenyl]-1-acetone, alpha-hydroxyalkyl benzophenone.

5. waterborne UV coating as claimed in claim 1, it is characterized in that, described auxiliary agent is flow agent, and described flow agent is the mixture of silicone based flow agent and fluorine-carbon modified class flow agent, and the ratio of described silicone based flow agent and fluorine-carbon modified class flow agent is 5:2 ~ 4.

6. the preparation method of waterborne UV coating as claimed in claim 1, is characterized in that, comprise the following steps:

Step 1, by the urethane acrylate of 25% ~ 35%, the epoxy acrylate of 20% ~ 30% and 5% ~ 10% aqueous hyperbranched urethane join in the container of specifying, carry out mechanical stirring 2 ~ 5h, these three kinds of materials are fully mixed, and then add the fluorocarbon resin powder of 5% ~ 10% and the dispersion agent of 2% ~ 5% carries out mechanical stirring 5 ~ 10h again, make fluorocarbon resin powder in the solution dispersed, obtain homogeneous solution;