阅读说明：本技术 一种用于外墙粉刷的水性涂料 (Water-based paint for exterior wall painting ) 是由 刘廉新 于 2020-11-09 设计创作，主要内容包括：本发明适用于外墙涂料技术领域,提供了一种用于外墙粉刷的水性涂料,由以下重量份组分组成：氟碳乳液170-190份、成膜助剂5-12份、聚氧乙烯聚氧丙醇胺醚2-5份、杀菌防霉剂2-3份、碳酸锌1-3份、高铝矾土熟料3-5份、增稠剂3-8份、纳米氧化锌5-6份、有机硅改性纯丙乳液20-30份、分散剂2-3份、消泡剂10-14份、改性复合填料10-12份、纯化水70-100份。本发明通过进行多次搅拌混合,便于各原料之间的融合,提高了涂料的效果,避免发生团聚现象,通过将其用于水性涂料的制备中,可快速均匀得分散到水性涂料中,有效的改善水性涂料的综合性能,而且粘结力强,不易龟裂和脱落,具有优异的耐候性、耐水性、耐污染性、耐化学品性,市场前景广阔。(The invention is suitable for the technical field of exterior wall coatings, and provides a water-based coating for exterior wall painting, which comprises the following components in parts by weight: 190 parts of fluorocarbon emulsion 170-containing materials, 5-12 parts of film-forming assistant, 2-5 parts of polyoxyethylene polyoxypropylene ether, 2-3 parts of sterilization mildew preventive, 1-3 parts of zinc carbonate, 3-5 parts of bauxite clinker, 3-8 parts of thickening agent, 5-6 parts of nano zinc oxide, 20-30 parts of organic silicon modified acrylic emulsion, 2-3 parts of dispersing agent, 10-14 parts of defoaming agent, 10-12 parts of modified composite filler and 70-100 parts of purified water. The invention is convenient for the fusion of the raw materials by stirring and mixing for many times, improves the effect of the coating, avoids the agglomeration phenomenon, can be quickly and uniformly dispersed in the water-based coating when being used for preparing the water-based coating, effectively improves the comprehensive performance of the water-based coating, has strong binding power, is not easy to crack and fall off, has excellent weather resistance, water resistance, pollution resistance and chemical resistance, and has wide market prospect.)

1. The water-based paint for exterior wall painting is characterized in that: the composition comprises the following components in parts by weight: 190 parts of fluorocarbon emulsion 170-containing materials, 5-12 parts of film-forming assistant, 2-5 parts of polyoxyethylene polyoxypropylene ether, 2-3 parts of sterilization mildew preventive, 1-3 parts of zinc carbonate, 3-5 parts of bauxite clinker, 3-8 parts of thickening agent, 5-6 parts of nano zinc oxide, 20-30 parts of organic silicon modified acrylic emulsion, 2-3 parts of dispersing agent, 10-14 parts of defoaming agent, 10-12 parts of modified composite filler and 70-100 parts of purified water.

2. The water-based paint for exterior wall painting according to claim 1, wherein: the composition comprises the following components in parts by weight: 180 parts of fluorocarbon emulsion, 7 parts of film-forming assistant, 3 parts of polyoxyethylene polyoxypropylene ether, 2 parts of sterilization mildew preventive, 2 parts of zinc carbonate, 4 parts of bauxite chamotte, 4 parts of thickening agent, 5 parts of nano zinc oxide, 20 parts of organosilicon modified pure acrylic emulsion, 2 parts of dispersing agent, 12 parts of defoaming agent, 10 parts of modified composite filler and 90 parts of purified water.

3. The water-based paint for exterior wall painting according to claim 1, wherein: the fluorocarbon emulsion is a core-shell structure fluorocarbon emulsion modified by silicon dioxide.

4. The water-based paint for exterior wall painting according to claim 1, wherein: the film forming auxiliary agent is one or the combination of at least two of propylene glycol, propylene glycol methyl ether acetate, dodecyl alcohol ester, DBE-IB and Texanol alcohol ester.

5. The water-based paint for exterior wall painting according to claim 1, wherein: the dispersing agent is tripolyphosphate, the defoaming agent is polydimethylsiloxane, and the sterilization mildewproof agent is a nitrogen-containing organic heterocyclic compound.

6. The water-based paint for exterior wall painting according to claim 1, wherein: the organic silicon modified pure acrylic emulsion is obtained by graft copolymerization of organic silicon polycondensation prepolymer anionic emulsion and acrylate monomer emulsion.

7. The water-based paint for exterior wall painting according to claim 1, wherein: the preparation method of the water-based paint for painting the outer wall comprises the following steps:

s1, preparing water-based paint raw materials: the water-based paint comprises raw materials of 180 parts of fluorocarbon emulsion, 7 parts of film-forming additive, 3 parts of polyoxyethylene polyoxypropylene ether, 2 parts of sterilization mildew inhibitor, 2 parts of zinc carbonate, 4 parts of bauxite chamotte, 4 parts of thickener, 5 parts of nano zinc oxide, 20 parts of organosilicon modified acrylic emulsion, 2 parts of dispersant, 12 parts of defoamer, 10 parts of modified composite filler and 90 parts of purified water;

s2, placing the bauxite chamotte prepared in the S1 into a crushing grinder, and crushing and grinding the bauxite chamotte through the crushing grinder to obtain bauxite chamotte powder for later use;

s3, placing the fluorocarbon emulsion, the film-forming aid and the polyoxyethylene polyoxypropylene amine ether prepared in the step S1 into a stirring barrel, stirring and mixing the fluorocarbon emulsion, the film-forming aid and the polyoxyethylene polyoxypropylene amine ether through the stirring barrel, placing the sterilization mildew preventive, the zinc carbonate, the nano zinc oxide and the organic silicon modified pure acrylic emulsion into the stirring barrel, stirring and mixing for the second time through the stirring barrel, finally placing the dispersing agent, the defoaming agent, the thickening agent, the modified composite filler and the purified water into the stirring barrel, and stirring and mixing for the third time through the stirring barrel to obtain a mixed solution;

s4, placing the powder prepared in the S2 into a stirring barrel in the S3, stirring and mixing for four times to obtain a mixed material, centrifuging the mixed material, washing with absolute ethyl alcohol, and finally drying to obtain the water-based paint.

8. The aqueous paint for exterior wall painting of claim 7, wherein: in S2, grinding is performed at 1200-1600rpm for 5-10min, and then reverse grinding is performed at 500-600rpm for 10-15min to obtain powder.

9. The aqueous paint for exterior wall painting of claim 7, wherein: the rotation speed of the first stirring and mixing in the S3 is 600-700rpm and the time is 20-30min, the rotation speed of the second stirring and mixing is 800-1000rpm, the temperature of the stirring environment is 50-60 ℃, the rotation speed of the third stirring and mixing is 300-400rpm and the time is 15-30 min.

10. The aqueous paint for exterior wall painting of claim 7, wherein: washing with anhydrous ethanol for 4-6 times in S4, wherein the drying temperature is 120-200 ℃ and the drying time is 100-220 min.

Technical Field

The invention belongs to the technical field of exterior wall coatings, and particularly relates to a water-based coating for exterior wall painting.

Background

The paint for external wall is used for painting external vertical wall of building, so that the most important index is ultraviolet radiation resistance, and long-time radiation is required to be realized without color change. The liquid stone water-based paint which is energy-saving and environment-friendly has attracted more and more attention since 2013. Some exterior wall coatings also require water resistance and self-cleaning properties. The paint film is hard and flat, and dirt can be washed off. The exterior wall coating can be used for painting interior walls because the exterior wall coating also has water resistance; the inner wall paint does not have the sun-proof function, so the inner wall paint cannot be used as the outer wall paint; the water paint is a paint using water as solvent or dispersion medium, and is a relatively new paint in the paint market, including 3 kinds of water-soluble paint, water-dilutable paint and water-dispersible paint (latex paint). The water-based paint uses a water-soluble resin as a film-forming material, and is represented by polyvinyl alcohol and various modified substances thereof.

In addition, water-soluble alkyd resin, water-soluble epoxy resin, inorganic polymer water-based resin, and the like. The water paint has excellent non-stick property and durability, but needs to be transported, stored, antiseptic and gas-proof; the water reducible coating is a coating prepared by dissolving a solvent type resin in an organic solvent and then dispersing the resin in water by strong mechanical stirring with the aid of an emulsifier to form an emulsion, which is called a post-emulsion, and the coating prepared can be diluted with water during the application. The water dispersed paint is prepared with synthetic resin emulsion as filming matter.

The water-based texture paint for the outer wall is an outer wall decorative paint which has a decorative effect similar to marble and granite and is popular in recent years. At present, as a large amount of sand stones are used in the texture paint for the outer wall, the particle size is large, a large amount of gaps are formed on the surface of a coating film, the dust is easy to accumulate after a long time, the pollution resistance is poor, the water vapor permeability is poor, so that the water-based paint for the outer wall is exposed in the external natural environment for a long time and is eroded by rainwater and air pollutants all the time, the aging and falling of the water-based paint for the outer wall are accelerated, and the service life of the water-based paint for the.

Disclosure of Invention

Technical problem to be solved

The invention provides a water-based paint for plastering an outer wall, and aims to solve the problems of poor stain resistance, poor water vapor permeability and reduced service life of the water-based paint for the outer wall.

(II) technical scheme

The invention is realized in such a way that the water-based paint for exterior wall painting comprises the following components in parts by weight: 190 parts of fluorocarbon emulsion 170-containing materials, 5-12 parts of film-forming assistant, 2-5 parts of polyoxyethylene polyoxypropylene ether, 2-3 parts of sterilization mildew preventive, 1-3 parts of zinc carbonate, 3-5 parts of bauxite clinker, 3-8 parts of thickening agent, 5-6 parts of nano zinc oxide, 20-30 parts of organic silicon modified acrylic emulsion, 2-3 parts of dispersing agent, 10-14 parts of defoaming agent, 10-12 parts of modified composite filler and 70-100 parts of purified water.

Preferably, the composition consists of the following components in parts by weight: 180 parts of fluorocarbon emulsion, 7 parts of film-forming assistant, 3 parts of polyoxyethylene polyoxypropylene ether, 2 parts of sterilization mildew preventive, 2 parts of zinc carbonate, 4 parts of bauxite chamotte, 4 parts of thickening agent, 5 parts of nano zinc oxide, 20 parts of organosilicon modified pure acrylic emulsion, 2 parts of dispersing agent, 12 parts of defoaming agent, 10 parts of modified composite filler and 90 parts of purified water.

Preferably, the fluorocarbon emulsion is a silicon dioxide modified core-shell structure fluorocarbon emulsion.

Preferably, the film forming auxiliary agent is one or a combination of at least two of propylene glycol, propylene glycol methyl ether acetate, dodecyl alcohol ester, DBE-IB and Texanol alcohol ester.

Preferably, the dispersant is tripolyphosphate, the defoaming agent is polydimethylsiloxane, and the sterilization and mildew prevention agent is a nitrogen-containing organic heterocyclic compound.

Preferably, the organosilicon modified acrylic emulsion is obtained by graft copolymerization of an organosilicon polycondensation prepolymer anionic emulsion and an acrylate monomer emulsion.

Preferably, the preparation of the water-based paint for exterior wall painting comprises the following steps:

s1, preparing water-based paint raw materials: the water-based paint comprises raw materials of 180 parts of fluorocarbon emulsion, 7 parts of film-forming additive, 3 parts of polyoxyethylene polyoxypropylene ether, 2 parts of sterilization mildew inhibitor, 2 parts of zinc carbonate, 4 parts of bauxite chamotte, 4 parts of thickener, 5 parts of nano zinc oxide, 20 parts of organosilicon modified acrylic emulsion, 2 parts of dispersant, 12 parts of defoamer, 10 parts of modified composite filler and 90 parts of purified water;

s2, placing the bauxite chamotte prepared in the S1 into a crushing grinder, and crushing and grinding the bauxite chamotte through the crushing grinder to obtain bauxite chamotte powder for later use;

s3, placing the fluorocarbon emulsion, the film-forming aid and the polyoxyethylene polyoxypropylene amine ether prepared in the step S1 into a stirring barrel, stirring and mixing the fluorocarbon emulsion, the film-forming aid and the polyoxyethylene polyoxypropylene amine ether through the stirring barrel, placing the sterilization mildew preventive, the zinc carbonate, the nano zinc oxide and the organic silicon modified pure acrylic emulsion into the stirring barrel, stirring and mixing for the second time through the stirring barrel, finally placing the dispersing agent, the defoaming agent, the thickening agent, the modified composite filler and the purified water into the stirring barrel, and stirring and mixing for the third time through the stirring barrel to obtain a mixed solution;

s4, placing the powder prepared in the S2 into a stirring barrel in the S3, stirring and mixing for four times to obtain a mixed material, centrifuging the mixed material, washing with absolute ethyl alcohol, and finally drying to obtain the water-based paint.

Preferably, in S2, the powder is obtained after grinding treatment is performed at the rotation speed of 1200-1600rpm for 5-10min and then reverse grinding treatment is performed at the rotation speed of 500-600rpm for 10-15 min.

Preferably, the rotation speed of the first stirring and mixing in S3 is 600-700rpm and the time is 20-30min, the rotation speed of the second stirring and mixing is 800-1000rpm, the temperature of the stirring environment is 50-60 ℃, the rotation speed of the third stirring and mixing is 300-400rpm and the time is 15-30 min.

Preferably, the anhydrous ethanol in the S4 is washed for 4-6 times, the drying temperature is 120-200 ℃, and the drying time is 100-220 min.

(III) advantageous effects

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a water paint for exterior wall painting, which is characterized in that high bauxite chamotte is crushed and ground by a crushing grinder to obtain high bauxite chamotte powder, kinetic energy is generated in the grinding process and is partially absorbed, fluorocarbon emulsion, film forming auxiliary agent and polyoxyethylene polyoxypropylene ether are stirred and mixed by a stirring barrel, then sterilization mildew preventive, zinc carbonate, nano zinc oxide and organic silicon modified pure acrylic emulsion are put into the stirring barrel and are stirred and mixed for the second time by the stirring barrel, finally dispersant, defoamer, thickener, modified composite filler and purified water are put into the stirring barrel and are stirred and mixed for the third time by the stirring barrel to obtain mixed liquid, and the mixed liquid is stirred and mixed for a plurality of times, so that the fusion among raw materials is facilitated, the paint effect is improved, and the negative ion powder is effectively prevented from being directly used for preparing the water paint, the adhesive has the advantages of high bonding force, difficult cracking and falling, excellent weather resistance, water resistance, stain resistance and chemical resistance and wide market prospect.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a technical scheme of a water-based paint for exterior wall painting, which comprises the following steps: the composition comprises the following components in parts by weight: 190 parts of fluorocarbon emulsion 170-containing materials, 5-12 parts of film-forming assistant, 2-5 parts of polyoxyethylene polyoxypropylene ether, 2-3 parts of sterilization mildew preventive, 1-3 parts of zinc carbonate, 3-5 parts of bauxite clinker, 3-8 parts of thickening agent, 5-6 parts of nano zinc oxide, 20-30 parts of organic silicon modified acrylic emulsion, 2-3 parts of dispersing agent, 10-14 parts of defoaming agent, 10-12 parts of modified composite filler and 70-100 parts of purified water.

In the embodiment, the coating consists of the following components in parts by weight: 180 parts of fluorocarbon emulsion, 7 parts of film-forming assistant, 3 parts of polyoxyethylene polyoxypropylene ether, 2 parts of sterilization mildew preventive, 2 parts of zinc carbonate, 4 parts of bauxite chamotte, 4 parts of thickening agent, 5 parts of nano zinc oxide, 20 parts of organosilicon modified pure acrylic emulsion, 2 parts of dispersing agent, 12 parts of defoaming agent, 10 parts of modified composite filler and 90 parts of purified water.

In this embodiment, the fluorocarbon emulsion is a silica-modified core-shell structure fluorocarbon emulsion.

In the present embodiment, the film-forming aid is one or a combination of at least two of propylene glycol, propylene glycol methyl ether acetate, lauryl alcohol ester, DBE-IB, and Texanol ester.

In the embodiment, the dispersant is tripolyphosphate, the defoaming agent is polydimethylsiloxane, and the sterilization mildewcide is a nitrogen-containing organic heterocyclic compound.

In the embodiment, the organosilicon modified acrylic emulsion is obtained by graft copolymerization of an organosilicon polycondensation prepolymer anionic emulsion and an acrylate monomer emulsion.

In this embodiment, the preparation of the aqueous coating for exterior wall painting includes the following steps:

s1, preparing water-based paint raw materials: the water-based paint comprises raw materials of 180 parts of fluorocarbon emulsion, 7 parts of film-forming additive, 3 parts of polyoxyethylene polyoxypropylene ether, 2 parts of sterilization mildew inhibitor, 2 parts of zinc carbonate, 4 parts of bauxite chamotte, 4 parts of thickener, 5 parts of nano zinc oxide, 20 parts of organosilicon modified acrylic emulsion, 2 parts of dispersant, 12 parts of defoamer, 10 parts of modified composite filler and 90 parts of purified water;

s2, placing the bauxite chamotte prepared in the S1 into a crushing grinder, and crushing and grinding the bauxite chamotte through the crushing grinder to obtain bauxite chamotte powder for later use;

s3, placing the fluorocarbon emulsion, the film-forming aid and the polyoxyethylene polyoxypropylene amine ether prepared in the step S1 into a stirring barrel, stirring and mixing the fluorocarbon emulsion, the film-forming aid and the polyoxyethylene polyoxypropylene amine ether through the stirring barrel, placing the sterilization mildew preventive, the zinc carbonate, the nano zinc oxide and the organic silicon modified pure acrylic emulsion into the stirring barrel, stirring and mixing for the second time through the stirring barrel, finally placing the dispersing agent, the defoaming agent, the thickening agent, the modified composite filler and the purified water into the stirring barrel, and stirring and mixing for the third time through the stirring barrel to obtain a mixed solution;

s4, placing the powder prepared in the S2 into a stirring barrel in the S3, stirring and mixing for four times to obtain a mixed material, centrifuging the mixed material, washing with absolute ethyl alcohol, and finally drying to obtain the water-based paint. In this embodiment, the S2 is ground at 1200-.

In this embodiment, the rotation speed of the first stirring and mixing in S3 is 600-700rpm and the time is 20-30min, the rotation speed of the second stirring and mixing is 800-1000rpm, the temperature of the stirring environment is 50-60 ℃, the rotation speed of the third stirring and mixing is 300-400rpm and the time is 15-30 min.

In the embodiment, the anhydrous ethanol in the S4 is washed for 4-6 times, the drying temperature is 120-200 ℃, and the drying time is 100-220 min.

The preparation principle of the invention is as follows: s1, preparing water-based paint raw materials: the raw materials of the water-based paint comprise fluorocarbon emulsion, film-forming additive, polyoxyethylene polyoxypropylene amine ether, sterilization mildew inhibitor, zinc carbonate, high-alumina bauxite clinker, thickener, nano zinc oxide, organosilicon modified pure acrylic emulsion, dispersant, defoamer, modified composite filler and purified water;

s2, placing the bauxite chamotte prepared in the S1 into a crushing grinder, crushing and grinding the bauxite chamotte through the crushing grinder to obtain bauxite chamotte powder for later use, grinding the bauxite chamotte for 5-10min at the rotation speed of 1200-1600rpm, and then carrying out reverse grinding at the rotation speed of 500-600rpm for 10-15min to obtain powder;

s3, putting the fluorocarbon emulsion prepared in S1, the film forming assistant and the polyoxyethylene polyoxypropylene amine ether into a stirring barrel, stirring and mixing the fluorocarbon emulsion, the film forming assistant and the polyoxyethylene polyoxypropylene amine ether by a stirring barrel, then putting the sterilization mildew preventive, the zinc carbonate, the nano zinc oxide and the organic silicon modified pure acrylic emulsion into the stirring barrel, stirring and mixing for the second time through a stirring barrel, finally placing the dispersing agent, the defoaming agent, the thickening agent, the modified composite filler and the purified water into the stirring barrel, stirring and mixing for three times through a stirring barrel to obtain a mixed solution, wherein the rotating speed of the first stirring and mixing is 600-700rpm, the time is 20-30min, the rotation speed of the second stirring and mixing is 800-, the temperature of the stirring environment is 50-60 ℃, the rotating speed of the third stirring and mixing is 300-400rpm, and the time is 15-30 min;

s4, placing the powder prepared in the S2 into a stirring barrel in the S3, stirring and mixing for four times to obtain a mixed material, then centrifuging the mixed material, washing with absolute ethyl alcohol, and finally drying to obtain the water-based paint, wherein the absolute ethyl alcohol is washed for 4-6 times, the drying temperature is 120-200 ℃, and the drying time is 100-220 min.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.