阅读说明：本技术 一种不易脱色的水凝板画技法用颜料及其制备方法 (Difficult-to-decolor pigment for hydrogel board painting technique and preparation method thereof ) 是由 安小奇 于 2019-10-02 设计创作，主要内容包括：本发明涉及绘画颜料技术领域,且公开了一种不易脱色的水凝板画技法用颜料及其制备方法,包括以下重量份：颜料粉20-40份、聚氨酯树脂乳液10-15份、消泡剂5-8份、粘结剂10-12份、助结剂2-5份、着色剂2-5份、水15-20份、湿润分散剂5-8份、防氧化剂3-5份。该不易脱色的水凝板画技法用颜料及其制备方法,通过加入聚氨酯树脂乳液使得不同的颜料粉相容性更好,粘附力强,干燥时间快,干燥后不易褪色,耐水性好,不易脱色,大大提高了画作的保存时间,同时本发明在制备颜料时添加苯甲酸钠,一方面安全环保,减少对人体的伤害,另一方面可以提高颜料的防腐性能,能使颜料在气候的温湿度变化情况下,也不至于发霉变质,延长其使用保质期。(the invention relates to the technical field of drawing pigments and discloses a pigment for a hydrogel board painting technique, which is not easy to decolor, and a preparation method thereof, wherein the pigment comprises the following components in parts by weight: 20-40 parts of pigment powder, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent, 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 15-20 parts of water, 5-8 parts of wetting dispersant and 3-5 parts of antioxidant. According to the pigment for the hydrogel board painting technique and the preparation method thereof, the polyurethane resin emulsion is added, so that different pigment powders are better in compatibility, strong in adhesion force, quick in drying time, not easy to fade after drying, good in water resistance and not easy to decolor, and the preservation time of paintings is greatly prolonged.)

1. The pigment for the hydrogel board painting technique, which is not easy to decolor, is characterized by comprising the following components in parts by weight: 20-40 parts of pigment powder, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent, 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 15-20 parts of water, 5-8 parts of wetting dispersant and 3-5 parts of antioxidant.

2. The non-discoloring pigment for hydrogel board painting techniques as claimed in claim 1, wherein said wetting dispersant comprises organosilicon compounds containing hydrophilic groups and at least two hydrophobic groups in the molecule and cellulose hydroxyethyl ether.

3. The pigment for the hydrogel board painting technique, which is not easy to decolor, according to claim 1, wherein the pigment powder comprises inorganic pigment powder and organic pigment powder, the inorganic pigment powder comprises one or a combination of at least two of iron oxide yellow, iron oxide red, iron oxide black or titanium dioxide, and the organic pigment powder comprises one or a combination of at least two of phthalocyanine blue, phthalocyanine green, toluidine purplish red, ultramarine blue, fast yellow 10G or fast yellow G.

4. A preparation method of a difficult-to-decolor pigment for a hydrogel board painting technique is characterized by comprising the following steps:

S1, pouring 20-40 parts of pigment, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent and 5-8 parts of wetting dispersant into a stirrer, heating to 60-80 ℃, working the stirrer, stirring for 25-30min, and cooling to room temperature for later use;

S2, adding 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 3-5 parts of antioxidant and 15-20 parts of water into a stirrer, and stirring for 20-25 min;

S3, adding a mixture of 20-40 parts of pigment, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent, 5-8 parts of wetting dispersant, 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 3-5 parts of antioxidant and 15-20 parts of water into a stirrer after cooling to room temperature, heating to 100-120 ℃, stirring for 45-60min, and forming a mixed solution for later use after uniformly mixing;

And S4, taking out after the steps are finished, placing the mixture in a cool closed space, and concentrating the mixed solution after the temperature of the mixture is restored to normal temperature to obtain the pigment for the hydrogel board painting technique.

5. The method for preparing a pigment for a hydrogel board painting technique, which is not easy to discolor, according to claim 4, wherein the antifoaming agent is one or more selected from dimethicone, tributyl phosphate, antifoaming agent humble 3100, and antifoaming agent BYK 088.

6. the method for preparing a pigment not prone to discoloring for a hydrogel board painting technique according to claim 4, wherein the binder is one of an aqueous epoxy resin, an aqueous acrylic resin, a silica sol, an aqueous polyurethane resin, an organic-inorganic composite emulsion or an acrylic emulsion.

7. The method for preparing a non-discoloring pigment for a hydrogel board painting technique according to claim 4, wherein the preservative is sodium benzoate.

Technical Field

the invention relates to the technical field of drawing pigments, in particular to a pigment for a hydrogel board painting technique which is not easy to decolor and a preparation method thereof.

Background

Pigments are powdery substances for coloring which are insoluble in media such as water, fats, resins or organic solvents, but can be uniformly dispersed in these media and can color the media, and which have a certain hiding power, and which are distinguishable from soluble and insoluble pigments, inorganic and organic. Inorganic pigments are generally mineral substances, and it has long been known for man to use inorganic pigments to draw and paint the body on the rock wall using coloured soils and minerals, organic pigments generally being obtained from the purple colour extracted from shellfish from plants and marine animals, such as alizarin, gamboges and ancient romans.

The painting pigment is an important component in the painting process, and with the increasing popularization of the painting pigment, the painting pigment prepared by the prior art can not meet the use requirements of the public, the existing painting pigment has many defects, when the pigment is exposed in the air, the pigment gradually fades, ages and finally cracks along with the time, and brings a lot of invariance to users, therefore, the pigment for the hydrogel board painting technique which is not easy to fade and the preparation method thereof are provided to solve the problems.

disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the pigment for the hydrogel board painting technique which is not easy to decolor and the preparation method thereof, has the advantages of difficult decoloration, good color and luster degree and the like, and solves the problems that the pigment for the existing hydrogel board painting technique gradually fades and ages with the time.

(II) technical scheme

In order to achieve the purposes of difficult decolorization and good color and luster degree, the invention provides the following technical scheme: a pigment for a hydrogel board painting technique which is not easy to decolor comprises the following components in parts by weight: 20-40 parts of pigment powder, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent, 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 15-20 parts of water, 5-8 parts of wetting dispersant and 3-5 parts of antioxidant.

The technical scheme is further optimized, and the wetting dispersant consists of an organic silicon compound containing hydrophilic groups and at least two hydrophobic groups in the molecule and cellulose hydroxyethyl ether.

The technical scheme is further optimized, the pigment powder comprises inorganic pigment powder and organic pigment powder, the inorganic pigment powder comprises one or a combination of at least two of iron oxide yellow, iron oxide red, iron oxide black or titanium dioxide, and the organic pigment powder comprises one or a combination of at least two of phthalocyanine blue, phthalocyanine green, toluidine mauve, ultramarine, fast yellow 10G or fast yellow G.

A preparation method of a difficult-to-decolor pigment for a hydrogel board painting technique comprises the following steps:

S1, pouring 20-40 parts of pigment, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent and 5-8 parts of wetting dispersant into a stirrer, heating to 60-80 ℃, working the stirrer, stirring for 25-30min, and cooling to room temperature for later use;

S2, adding 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 3-5 parts of antioxidant and 15-20 parts of water into a stirrer, and stirring for 20-25 min;

S3, adding a mixture of 20-40 parts of pigment, 10-15 parts of polyurethane resin emulsion, 5-8 parts of defoaming agent, 5-8 parts of wetting dispersant, 10-12 parts of binder, 2-5 parts of auxiliary binder, 2-5 parts of colorant, 3-5 parts of antioxidant and 15-20 parts of water into a stirrer after cooling to room temperature, heating to 100-120 ℃, stirring for 45-60min, and forming a mixed solution for later use after uniformly mixing;

And S4, taking out after the steps are finished, placing the mixture in a cool closed space, and concentrating the mixed solution after the temperature of the mixture is restored to normal temperature to obtain the pigment for the hydrogel board painting technique.

further optimizing the technical scheme, the antifoaming agent is selected from one or more of simethicone, tributyl phosphate, antifoaming agent, humble 3100 and antifoaming agent BYK 088.

Further optimizing the technical scheme, the binder is one of waterborne epoxy resin, waterborne acrylic resin, silica sol, waterborne polyurethane resin, organic-inorganic composite emulsion or acrylic emulsion.

further optimizes the technical proposal, and the preservative is sodium benzoate.

(III) advantageous effects

Compared with the prior art, the invention provides the pigment for the hydrogel board painting technique which is not easy to decolor and the preparation method thereof, and the pigment has the following beneficial effects: according to the pigment for the hydrogel board painting technique and the preparation method thereof, the polyurethane resin emulsion is added, so that different pigment powders are better in compatibility, strong in adhesion force, quick in drying time, not easy to fade after drying, good in water resistance and not easy to decolor, and the preservation time of paintings is greatly prolonged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.