CN103589323B - A kind of color inhibition UV woodenware lacquer - Google Patents

Abstract

The present invention relates to paint field, be specifically related to a kind of color inhibition UV woodenware lacquer.Color inhibition UV woodenware lacquer is made up of each component of following weight percent: acrylate 30 ~ 80%; Tripropylene glycol diacrylate 10 ~ 40%; 754 light triggers 2 ~ 8%; Flow agent 0.01 ~ 1%; Defoamer 0.01 ~ 0.5%; Ultraviolet absorbers 0.01 ~ 2%; Described acrylate is the mixture of modified epoxy acrylic ester and aliphatic urethane acrylate.This color inhibition UV woodenware lacquer has not containing solvent, high-environmental, paint film possesses high fullness ratio, hardness is good, toughness is good, yellowing resistance is excellent, paint film brightness high, simultaneously, product breaks traditions the exploitation difficult point of non-color inhibition, the finish paint reaching good weatherability requires effect, and without any solvent evaporates in construction process, be more suitable for environmental protection construction, reduce the actual bodily harm to operator.

Description

A kind of color inhibition UV woodenware lacquer

Technical field

The present invention relates to paint field, be specifically related to a kind of color inhibition UV woodenware lacquer.

Background technology

Woodwork coating mainly contains the oil-base paints such as traditional PU, PE, NC, and the UV photo-curing paint that gets up of developed recently and aqueous woodware paint.And UV photo-curing paint is after appearance, just to obtain vigorous growth in the time of curing speed fast, excellent performance short decades, gradually there is the trend replacing conventional oil-based paint.In floor and plate fitment industry, the use of UV paint is very general.UV paint very admittedly contains, and hardly with an organic solvent, and aqueous woodware paint is all environment-friendly and green coating.Be the developing direction of woodwork coating, along with the raising of people's environmental consciousness, the demand of UV paint will continue to strengthen.

Mainly there are roller coat, spraying, showering three kinds of forms of construction work in present stage UV woodwork coating, finish paint construction is the most extensively shown in showering, and its construction film is the most smooth and construction is substantially lossless.Along with the development of UV coating, also improve constantly the requirement of UV showering finish paint, particularly the requirement of yellowing resistance is more and more higher.The present invention innovates for anti-yellowing property especially, and under the prerequisite of workability ensureing showering paint, by the screening of resin and the improvement of light trigger, collocation specific function auxiliary agent, improves paint film yellowing resistance and weather resistance.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, a kind of color inhibition UV woodenware lacquer is provided, it has not containing solvent, high-environmental, paint film possesses high fullness ratio, hardness is good, toughness is good, yellowing resistance is excellent, paint film brightness high, and meanwhile, product breaks traditions the exploitation difficult point of non-color inhibition, the finish paint reaching good weatherability requires effect, and without any solvent evaporates in construction process, be more suitable for environmental protection construction, reduce the actual bodily harm to operator.

Technical problem to be solved by this invention is achieved by the following technical programs:

A kind of color inhibition UV woodenware lacquer, is made up of each component of following weight percent:

Acrylate 30 ~ 80%, described acrylate is the mixture of modified epoxy acrylic ester and aliphatic modified urethane acrylate.Modified epoxy CALCIUM ACRYLATE is the modified epoxy CALCIUM ACRYLATE that the art is commonly used, and be coated with beautiful YTM2060 as refined, it has extraordinary dissolving power, can dissolve each other completely with most of reactive monomer and resin, and easily make system viscosity reduce, levelling property improves; Aliphatic modified epoxy acrylate is the aliphatic modified epoxy acrylate resin that the art is commonly used, beautiful YTM6318 is coated with as refined, it has extraordinary snappiness, shrinkability is lower, effectively can reduce the string stress of system, there is good effect to the raising of sticking power, effectively can improve scrath resistance and the levelling property of paint film

Tripropylene glycol diacrylate 10 ~ 40%, it has low volatility, low viscosity, the feature that snappiness is good, good for base material sticking power, and not containing benzene ring structure in structure, is not easy to cause xanthochromia.

754 light trigger 2 ~ 8%, 754 light triggers are a kind of low smell, non yellowing light trigger, and good with selected resin compatibility, can uniformly and mixed with resin.

Flow agent 0.01 ~ 1%, the acrylic acid or the like flow agent that described flow agent selects those skilled in the art conventional when carrying out ultraviolet-curing paint and producing.

Defoamer 0.01 ~ 0.5%, the silicone based defoamer that described defoamer selects those skilled in the art to commonly use when carrying out ultraviolet-curing paint and producing, at least one in acryl-based antifoaming agent.

Ultraviolet absorbers 0.01 ~ 2%, described ultraviolet absorbers is Taiwan double bond UV-33, and this material belongs to efficient UV light absorber, does not affect curing speed, improves weather-proof ability and yellowing resistance.

The each constituent optimization of further described formula is:

Modified epoxy acrylic ester 10 ~ 30%;

Aliphatic modified urethane acrylate 20 ~ 50%;

Tripropylene glycol diacrylate 15 ~ 35%;

754 light triggers 2 ~ 5%;

Acrylic acid or the like flow agent 0.5 ~ 1%;

Silicone based defoamer 0.1 ~ 0.2%;

Acryl-based antifoaming agent 0.1 ~ 0.2%;

Taiwan double bond UV-330.1 ~ 2%.

The present invention has following beneficial effect:

1. with there is the aliphatic polyurethane of yellowing resistance as matrix resin, under ensureing the prerequisite of hardness of paint film and toughness, the anti-yellowing property of the material self of this product is improved.

2. by selecting up-to-date color inhibition light trigger, collocation color inhibition resin, reduces the xanthochromia of paint film, improves the yellowing resistance of this product.Meanwhile, guarantee that drying varniss is complete, ensure that later stage paint film is unchanged.

3. improve the later stage anti-yellowing property of this product, often conventional products there will be later stage xanthochromia after long-term illumination, and this invention solves the requirement of later stage flavescence by adding ultraviolet absorbers.

4. add a small amount of defoamer and flow agent, guarantee that showering paint has applicable viscosity and drenches curtain stability, make this product reach smooth and the requirement had good workability.

Embodiment

Preparation method of the present invention is the ordinary skill in the art, does not elaborate at this.

The embodiment 1 ~ 3 of following table is three preferred implementations of the present invention, and comparative example 1 is the combination that embodiment 1 removes UV-33.

Performance test

Sticking power is tested: the positive square lattice drawing 100 lattice 1 millimeter × 1 millimeter with stroke lattice device at coating surface, coating surface is bonded at 3M gummed paper, 45° angle firmly instant pull-up, observe scratching edge place with or without coming off: as come off between 0 ~ 5% for 5B, be 4B between 5 ~ 10%, be 3B between 10 ~ 20%, is 2B between 20 ~ 30%, be 1B between 30 ~ 50%, be 0B more than 50%.

Hardness: with pendulum-rocker hardness measurement examination, Chinese pencil, 1KG power.

Yellowing resistance detects: with UVA(340) lamp as light source, test plate (panel) is placed in test conditions and can meets that test plate (panel) temperature is (60 ± 3) DEG C, irradiance is 0.68W/m ², dry (without condensation) fluorescent ultraviolet ageing machine in, whole process maintenance continuous illumination 168 hours.Illumination terminates rear taking-up, contrasts, measure colour-change with color difference meter with the test plate (panel) without illumination, colour-change value unit △ E*.Measured value is less, and yellowing resistance is better.

Measurement result is as shown in table 2.

Table 2 color inhibition UV woodenware lacquer the performance test results

As seen from the above table, ultraviolet absorbers Taiwan double bond UV-33 add the yellowing resistance energy that effectively can improve coating.

The above embodiment only have expressed embodiments of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; in every case the technical scheme adopting the form of equivalent replacement or equivalent transformation to obtain, all should drop within protection scope of the present invention.

Claims (2)

1. a color inhibition UV woodenware lacquer, is characterized in that this color inhibition UV woodenware lacquer is made up of each component of following weight percent:

Acrylate 30 ~ 80%;

Tripropylene glycol diacrylate 10 ~ 40%;

754 light triggers 2 ~ 8%;

Flow agent 0.01 ~ 1%;

Defoamer 0.01 ~ 0.5%;

Ultraviolet absorbers 0.01 ~ 2%;

Described acrylate is the mixture of modified epoxy acrylic ester and aliphatic modified urethane acrylate,

Described flow agent is acrylic acid or the like flow agent,

Described defoamer is at least one in silicone based defoamer, acryl-based antifoaming agent,

Described ultraviolet absorbers is Taiwan double bond UV-33.

2. a kind of color inhibition UV woodenware lacquer according to claim 1, is characterized in that each component of described formula is:

Modified epoxy acrylic ester 10 ~ 30%;

Aliphatic modified urethane acrylate 20 ~ 50%;

Tripropylene glycol diacrylate 15 ~ 35%;

754 light triggers 2 ~ 5%;

Acrylic acid or the like flow agent 0.5 ~ 1%;

Silicone based defoamer 0.1 ~ 0.2%;

Acryl-based antifoaming agent 0.1 ~ 0.2%;

Taiwan double bond UV-330.1 ~ 2%.