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Aqueous ultraviolet-curing transparent prime coat and preparation method thereof

A transparent primer and ultraviolet light technology, applied in the direction of biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve the problem of unsatisfactory yellowing resistance, sterilization can not meet the sterilization requirements, water resistance It can not meet the problems such as excellent environmental protection performance, short construction period and good yellowing resistance.

Active Publication Date: 2012-04-11
QINGDAO ZHANCHEN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application CN200810202791.0 (referred to as the 2008 patent) discloses a water-based UV-curable high-solid transparent intermediate coating primer and a preparation method thereof. The coating contains 60-87% of a water-based UV-curable resin and a water-based reactive diluent 3-10%, talcum powder 3-15%, calcium carbonate 1-10%, fumed silica 0.5-1.0%, photoinitiator 1.0-3.0%, water 1-2%, which uses water-based UV curing Resin and water-based reactive diluent are evenly mixed, and then water-based photoinitiator is added to make a water-based light-curing coating. In terms of denaturation performance, it cannot meet the customer's construction requirements, and in terms of water resistance, it cannot meet the requirements of the third-grade water in GB / T6682, and deionized water must be used, and the use of tap water will cause the sterilization of the coating itself to fail. In terms of sterilization requirements, the main coating process cannot use the same product to use both spray coating or roller coating.

Method used

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  • Aqueous ultraviolet-curing transparent prime coat and preparation method thereof
  • Aqueous ultraviolet-curing transparent prime coat and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Example 1: Water-based UV-curing transparent primer for spraying

[0059] 1. The composition of raw materials is as follows:

[0060] composition

[0061] 2. Preparation method:

[0062] 1) First, add UV LS2348, SU-N78 and HEMA to the cylinder and disperse at medium speed for 10 minutes, then add TP1250, JG3000, A200 under stirring, and stir evenly and disperse at high speed for 15 minutes;

[0063] 2) The photoinitiators IHT-PI6022 and TEGO810 were dispersed at medium speed for 10 minutes;

[0064] 3) Add K-20, TEGO245, AMP-95, PU40 and water, stir evenly, adjust the pH value to 8-9, and adjust the viscosity to 40-60KU / 25℃ to obtain the product.

[0065] 3. The test results are as follows:

[0066] Indicator

[0067] The results show that: the transparent primer of this embodiment is cured by ultraviolet light, and the hardness reaches more than 3H (tested in GB / T1730-1993), and the fullness is good, the yellowing resistance is good, the solid co...

Embodiment 2

[0068] Example 2: Water-based UV-curing transparent primer for spraying

[0069] 1. The composition of raw materials (weight percentage) is as follows:

[0070] composition

[0071] 2. Preparation method: same as Example 1, just adjust the viscosity to 65KU / 25℃.

[0072] 3. The test results are as follows:

[0073] Indicator

[0074] The results show: the benzene content mg / M of the transparent primer of this embodiment before and after construction 2 The effect is less than or equal to 0.003, almost odorless, free of toxic and harmful substances such as triphenyl, formaldehyde and free TDI, and the heavy metal content is far lower than the European standard.

Embodiment 3

[0075] Example 3: Water-based UV-curing transparent primer for spraying

[0076] 1. The composition of raw materials (weight percentage) is as follows:

[0077] composition

[0078] 2. Preparation method:

[0079] 1) First, add UV LS2348, SU-N78 and HEMA to the cylinder and disperse at medium speed for 10 minutes, then add TP1250, JG3000, A200 under stirring, and stir evenly and disperse at high speed for 15 minutes;

[0080] 2) The photoinitiators IHT-PI6022 and TEGO810 were dispersed at medium speed for 10 minutes;

[0081] 3) Add K-20, TEGO245, AMP-95, PU40 and water, stir evenly, adjust the pH value to 8-9, and adjust the viscosity to 40-60KU / 25℃ to obtain the product.

[0082] 3. The test results are as follows:

[0083] Indicator

[0084] The results show: the benzene content mg / M of the transparent primer of this embodiment before and after construction 2 Functional product with no higher than 0.003 effect, almost odorless.

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Abstract

The present invention relates to an aqueous ultraviolet-curing transparent prime coat and a preparation method thereof. The transparent prime coat comprises the following components, by weight, 40-60% of an aqueous ultraviolet resin, 30-45% of an aqueous ultraviolet wear resistance resin, 3-10% of an aqueous reaction type diluent agent, 3-15% of talc powder, 1-10% of glass powder, 0.5-1.0% of fumed silica, 1.0-3.0% of benzene-free photoinitiator and 1-2% of water. According to the present invention, the transparent prime coat of the present invention is a functional product with excellent environmental protection performance, wherein the benzene content is low before or after the transparent prime coat construction; the transparent prime coat of the present invention is odorless, can be directly diluted with the water, and can be applicable for the spray coating process and the roller coating process; the hardness of the transparent prime coat is more than 3H, and the water resistanceof the transparent prime coat meets requirements of the three-level water in GB\T6682.

Description

technical field [0001] The invention relates to a wood product coating, in particular to a water-based UV-curable transparent primer for wood products and a preparation method thereof. Background technique [0002] Ultraviolet light-curing (UV) coatings have developed rapidly due to their advantages of short recoating time and high production efficiency. But water-based UV coatings are expensive because of their price. The construction process can only use the roller coating process or the spray coating single coating process construction and other defects. At the same time, systematic analysis and experimental testing of the resin raw materials commonly used in the existing UV light curing technology were carried out. Combined with the customer's experimental data, a regular understanding was concluded. A compound produces benzene during the formulation and light curing process. According to the mechanism, some compounds contain benzene before exposure to light, and it do...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D167/06C09D5/14C09D7/12
Inventor 陈寿生彭钧浪张君
Owner QINGDAO ZHANCHEN NEW MATERIAL
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