CN109135353B - Method for preparing high-scrubbing-resistance water-based paint by adopting regenerated building micro powder - Google Patents
Method for preparing high-scrubbing-resistance water-based paint by adopting regenerated building micro powder Download PDFInfo
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- CN109135353B CN109135353B CN201810631740.3A CN201810631740A CN109135353B CN 109135353 B CN109135353 B CN 109135353B CN 201810631740 A CN201810631740 A CN 201810631740A CN 109135353 B CN109135353 B CN 109135353B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Abstract
The invention relates to a method for preparing a high-scrubbing-resistance water-based paint by using regenerated building micro powder, which comprises the following steps: (1) weighing 400 portions of regenerated building micro powder, 300 portions of emulsion, 200 portions of first functional auxiliary agent and 200 portions of deionized water according to the weight portions, fully mixing, and placing the mixture into ball milling equipment for ball milling to obtain water-based paint slurry A; (2) then, 50-150 parts of deionized water and 22-32 parts of second functional auxiliary agent are fully mixed to obtain water-based paint slurry B; (3) and finally, mixing the water-based coating slurry A and the water-based coating slurry B, mixing, and sieving to obtain undersize products, namely the target products. Compared with the prior art, the invention has the advantages of simple preparation process, low production cost and small influence on ecological environment, not only solves the problems of large floor area and difficult absorption of building wastes, but also has higher added value and wider application prospect of resource products, accords with the national policy of sustainable development, and has important theoretical and practical significance.
Description
Technical Field
The invention belongs to the technical field of building waste recycling, and relates to a recycling treatment method for preparing a high-scrubbing-resistance water-based paint by using recycled building micro powder.
Background
The water paint in the field of building paint is an environment-friendly water paint which is produced by using water as a dispersing agent, synthetic resin and pigment and filler as base materials and adding different auxiliaries under the conditions of grinding, high-speed stirring and the like. Compared with the traditional coating, the coating has the characteristics of low VOC, low cost, small risk and the like. With the increase of the using process, the surface of the water paint coating is stained by various oil stains and dust, so that the water paint product is required to have certain washing resistance when being delivered out of a factory, and the coating can still have certain beauty and durability after being washed on the surface. The washing and brushing resistance of the water-based paint is influenced by the types of the emulsion, the pigments and fillers, the auxiliaries and the film forming conditions, and the emulsion and the pigments and fillers are taken as main components. In the formulation design of the water-based paint, the addition of the emulsion or the film-forming additive can effectively increase the scrubbing resistance of the coating, but can also greatly increase the cost of the water-based paint product. Therefore, there is a need to add suitable pigments and fillers to enhance the scrub resistance of aqueous coating products. The products prepared by using the traditional filler, such as heavy calcium carbonate, light calcium carbonate, wollastonite powder, sericite powder and the like, meet the delivery requirements of the products, but have unobvious washing resistance. The remarkable increase in the brushing resistance requires the addition of special substances, such as rutile titanium dioxide, but also causes the problem of increasing the cost of the product. Therefore, there is a need to find a less expensive additive to enhance the scrub resistance.
On the other hand, China generates more than 2 hundred million t of construction waste every year, and the quantity still rises year by year. The building waste refers to various waste materials generated in the processes of new construction, reconstruction, extension, demolition and decoration of a building or a structure. The construction waste is mostly crushed and screened to be used as recycled aggregate for recycling, and the powdery waste is used as recycled micro powder. The raw materials of the regenerated micro powder, namely the waste concrete, the waste brick and the waste ceramic, are all composed of silicate substances, wherein the preparation process of the cement, the brick and the ceramic is all subjected to a high-temperature firing process, so that the prepared regenerated powder has higher strength and hardness. However, the activity of recycled aggregates and fine powders is greatly reduced as compared with natural minerals, so that they can be used only as a part of raw materials or in the development of certain low-grade products, and thus are difficult to be utilized as high-performance products. Therefore, the market utilization rate is very low, and a large amount of recycled aggregate and micro powder cannot be effectively utilized.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method for preparing a high-scrubbing-resistant water-based paint by using regenerated building micro powder so as to improve the additional value of recycling building wastes.
The purpose of the invention can be realized by the following technical scheme:
the invention provides a method for preparing a high-scrubbing-resistance water-based paint by using regenerated building micro powder, which comprises the following steps:
(1) weighing 400 portions of regenerated building micro powder, 300 portions of emulsion, 200 portions of first functional auxiliary agent and 200 portions of deionized water according to the weight portions, fully mixing, and placing the mixture into ball milling equipment for ball milling to obtain water-based paint slurry A;
(2) then, 50-150 parts of deionized water and 22-32 parts of second functional auxiliary agent are fully mixed to obtain water-based paint slurry B;
(3) and (3) finally, mixing the water-based paint slurry A obtained in the step (1) and the water-based paint slurry B obtained in the step (2), mixing, and sieving to obtain undersize products, namely the target products.
Further, the regenerated building micropowder in the step (1) is prepared by the following method: crushing the construction waste, and sieving with a 80-mesh sieve to obtain the product.
Furthermore, the construction waste is taken from a demolished building or structure and is selected from one or a combination of concrete, brick or ceramic.
Furthermore, the components of the construction waste are as follows: in percent by weight, it comprises SiO230-70％，Al2O316-48％，CaO 2-33％，Fe2O31-6% and other components not more than 2%.
Further, in the step (1), the ball milling process is ball milling at the rotation speed of 400-.
Further, the first functional auxiliary agent in the step (1) comprises a dispersing agent, a defoaming agent and a thickening agent.
Further, the second functional auxiliary agent in the step (2) comprises a dispersing agent, an antifoaming agent, a film-forming auxiliary agent, a pH regulator, a preservative, a thickening agent, an anti-settling agent and an anti-mildew agent.
Further, the properties of the high scrub resistant waterborne coating prepared by the present invention are shown in table 1 below.
TABLE 1
SiO in regenerated building micropowder2Compared with the traditional filler (talcum powder, mica powder and the like, the Mohs hardness is 1-3), the Mohs hardness of the regenerated building micro powder can reach 2-5, so that the raw materials have good washing and brushing resistant potential. In order to fully release the washing and brushing resistant potential of the regenerated building micro powder, in the processing process, the filler and the emulsion in the traditional process are simply mixed, and the invention can lead the SiO in the regenerated micro powder to be subjected to the co-ball milling2Under the action of a dispersing agent and high-speed ball milling, the regenerated micro powder is fully activated and contacted with the emulsion, so that the effective combination between the regenerated micro powder and the emulsion is improved, and the regenerated micro powder is grafted on the emulsion molecules, so that a coating formed by the regenerated micro powder is more compact, and the washing resistance is further improved.
Compared with the prior art, the invention has the following advantages:
(1) the regenerated building micro-powder-based high-scrubbing-resistance water-based paint has the characteristics of simple preparation process, low production cost, small influence on ecological environment and the like.
(2) Compared with the traditional washing and brushing resistant water-based paint, the regenerated building micro-powder-based high washing and brushing resistant water-based paint disclosed by the invention not only ensures that the product has good washing and brushing resistant performance, but also can absorb a large amount of building wastes, and realizes resource utilization of the building wastes.
(3) The recycled building micro-powder-based high-washability water-based paint is obtained by recycling the building wastes, and has higher added value and wider application prospect compared with the recycled aggregate of the traditional building waste recycling product.
(4) Compared with the traditional preparation process, the water-based paint with washing resistance prepared by the invention has the advantages that the filler and the emulsion are not simply mixed and stirred but are subjected to ball milling, so that the contact effect can be improved, the formed coating film is more compact, and the washing resistance is further improved.
Detailed Description
The present invention will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The chemical composition of construction wastes such as concrete materials, brick materials and ceramic materials used in the following examples is shown in table 2 below.
TABLE 2
| Name (R) | SiO2 | Al2O3 | CaO | Fe2O3 | Other ingredients |
| Content/% | 30～70 | 16～48 | 2～33 | 1～6 | ≤2 |
Example 1
(1) Selecting a certain mass of concrete material for crushing;
(2) sieving the crushed base material in the step (1) by a sieve of 80 meshes;
(3) taking 500 parts by weight of the undersize concrete powder in the step (2), 250 parts by weight of styrene-acrylic emulsion, 2 parts by weight of anionic dispersant, 1.5 parts by weight of organic silicon defoamer, 0.3 part by weight of hydroxyethyl cellulose and 150 parts by weight of deionized water, fully stirring and mixing, putting into ball milling equipment for ball milling at 450rpm for 200min, and further processing to obtain water-based paint slurry;
(4) 50 parts of deionized water, twelve 7 parts of alcohol ester, 13 parts of propylene glycol, 1 part of hydroxyethyl cellulose, 2 parts of nonionic surfactant, 1 part of associative polyurethane thickener, 1 part of o-phenylphenol mildew preventive and 1.7 parts of AMP-95pH regulator, and stirring at 200rpm for 10min to obtain the water-based paint slurry.
(5) And (4) taking the slurry obtained in the step (3) and the slurry obtained in the step (4), stirring at 200rpm for 8min, and sieving by a 400-mesh sieve to obtain a screened product, namely the finished product of the environment-friendly water-based paint.
Example 2
(1) Selecting a certain mass of concrete material and brick body material for crushing;
(2) sieving the crushed base material in the step (1) by a sieve of 80 meshes;
(3) taking 250 parts by weight of the undersize concrete powder in the step (2), 180 parts by weight of the brick powder, 220 parts by weight of styrene-acrylic emulsion, 1.5 parts by weight of polyacrylate dispersant, 1.5 parts by weight of organic silicon defoamer, 0.1 part by weight of hydroxyethyl cellulose and 140 parts by weight of deionized water, fully stirring and mixing, putting into ball milling equipment for ball milling at 400rpm for 240min, and further processing to obtain water-based paint slurry;
(4) 50 parts of deionized water, twelve 6 parts of alcohol ester, 12 parts of ethylene glycol, 3.1 parts of hydroxyethyl cellulose, 1.8 parts of anionic surfactant, 0.5 part of ammonium persulfate mildew preventive, 2 parts of AMP-95pH regulator and stirring at 200rpm for 10min to obtain water-based paint slurry.
(5) And (4) taking the slurry obtained in the step (3) and the slurry obtained in the step (4), stirring at 200rpm for 8min, and sieving by a 400-mesh sieve to obtain a screened product, namely the finished product of the environment-friendly water-based paint.
Example 3
(1) Selecting a certain mass of brick materials and ceramic materials for crushing;
(2) sieving the crushed base material in the step (1) by a sieve of 80 meshes;
(3) taking 280 parts by weight of the undersize brick powder and 200 parts by weight of the ceramic powder in the step (2), taking 200 parts by weight of a pure acrylic emulsion, 1.5 parts by weight of an anionic dispersant, 1.5 parts by weight of a polyether modified silicon defoamer and 140 parts by weight of deionized water, fully stirring and mixing, putting into ball milling equipment for ball milling at 450rpm for 280min, and further processing to obtain water-based paint slurry;
(4) 58 parts of deionized water, twelve 8 parts of alcohol ester, 15 parts of propylene glycol, 0.6 part of hydroxyethyl cellulose, 1.8 parts of nonionic surfactant, 0.5 part of organic silicon defoamer, 2.5 parts of polyacrylate thickener, 0.8 part of o-phenylphenol mildew preventive, 1.4 parts of AMP-95pH regulator and stirring at 200rpm for 10min to obtain water-based coating slurry.
(5) And (4) taking the slurry obtained in the step (3) and the slurry obtained in the step (4), stirring for 15min at 200rpm, and sieving by a 400-mesh sieve to obtain a screened product, namely the finished product of the environment-friendly water-based paint.
Example 4
(1) Selecting a certain mass of ceramic material for crushing;
(2) sieving the crushed base material in the step (1) by a sieve of 80 meshes;
(3) taking 400 parts by weight of the undersize ceramic powder in the step (2), 200 parts by weight of styrene-acrylic emulsion, 1.5 parts by weight of polyacrylamide dispersant, 1.5 parts by weight of polysiloxane agent, 0.5 part by weight of hydroxyethyl cellulose and 140 parts by weight of deionized water, fully stirring and mixing, putting into ball milling equipment for ball milling at 500rpm for 300min, and further processing to obtain water-based paint slurry;
(4) 50 parts of deionized water, twelve 6 parts of alcohol ester, 11 parts of propylene glycol, 1 part of hydroxyethyl cellulose, 1.8 parts of nonionic surfactant, 1.1 parts of associative polyurethane thickener, 1.4 parts of metal oxide mildew inhibitor and 2.1 parts of AMP-95pH regulator, and stirring at 200rpm for 10min to obtain the water-based coating slurry.
(5) And (4) taking the slurry obtained in the step (3) and the slurry obtained in the step (4), stirring at 200rpm for 8min, and sieving by a 400-mesh sieve to obtain a screened product, namely the finished product of the environment-friendly water-based paint.
The properties of the finished coatings obtained in the above examples are shown in Table 3 below.
TABLE 3 coating Properties of the examples
Comparative example 1
Compared with the embodiment 1, the concrete powder is mostly the same, except that the concrete powder in the embodiment is changed into 250 parts of talcum powder, 100 parts of kaolin and 150 parts of mica powder.
Comparative example 2
Compared with the embodiment 1, the concrete powder is mostly the same, except that the concrete powder in the embodiment is changed into 200 parts of talcum powder, 150 parts of kaolin and 150 parts of mica powder.
Comparative example 3
Compared with the embodiment 2, the concrete powder and the brick powder are mostly the same, except that the concrete powder and the brick powder in the embodiment are changed into 100 parts of wollastonite powder, 200 parts of talcum powder and 130 parts of kaolin.
Comparative example 4
Compared with the embodiment 2, most of the concrete powder and the brick powder are the same, except that the concrete powder and the brick powder in the embodiment are changed into 200 parts of heavy calcium carbonate, 150 parts of talcum powder and 80 parts of mica powder.
Comparative example 5
Compared with the embodiment 1, most of the method is the same, except that the ball milling step is omitted in the step (3) of the embodiment, and the shearing stirring is carried out at the same rotating speed.
Comparative example 6
Compared with the embodiment 2, most of the materials are the same, except that the ball milling step is omitted in the step (3) of the embodiment, and the shearing stirring is carried out at the same rotating speed.
TABLE 4 coating Properties of the examples
Although the times of washing and brushing resistance of the coatings obtained in comparative examples 1 to 4 are more than 300 times, the times of washing and brushing resistance are far less than those of the recycled building micro powder water-based coating, so that the water-based coating prepared by using the recycled building micro powder has a remarkable advantage in the aspect of washing and brushing resistance. The coatings obtained in the comparative examples 5 to 6 are not co-ball milled in the preparation process, so the combination effect between the recycled building micro powder and the emulsion is poor, the artificial climate aging resistance of the coatings cannot meet the requirement, and the washing and brushing times are greatly reduced.
Example 5
Compared with the embodiment 1, the concrete powder is mostly the same, except that the concrete powder is changed into 600 parts in the embodiment.
Example 6
Compared with the embodiment 1, most of the concrete powder is the same, except that the concrete powder is changed into 400 parts in the embodiment.
Example 7
Compared with the example 1, the emulsion is mostly the same, except that the styrene-acrylic emulsion is changed to 200 parts in the example.
Example 8
Compared with the embodiment 1, the most parts are the same, except that the styrene-acrylic emulsion in the embodiment is changed into 300 parts.
Example 9
Compared with the embodiment 1, the most parts are the same, except that in the embodiment, the anionic dispersant is changed to 3.5 parts, the organic silicon defoamer is changed to 3.5 parts, and the hydroxyethyl cellulose is changed to 1 part
Example 10
Compared with the example 1, the most parts are the same, except that the addition amount of the second functional additive in the step (3) in the example is changed into twelve 4 parts of alcohol ester, 12 parts of propylene glycol, 0.3 part of hydroxyethyl cellulose, 1.8 parts of nonionic surfactant, 0.5 part of associative polyurethane thickener, 1.3 parts of o-phenylphenol mildew preventive and 2.1 parts of AMP-95pH regulator.
Example 11
Compared with the example 1, the most parts are the same, except that the addition amount of the second functional additive in the step (3) in the example is changed into twelve 8 parts of alcohol ester, 16 parts of propylene glycol, 0.6 part of hydroxyethyl cellulose, 2.2 parts of nonionic surfactant, 0.6 part of associative polyurethane thickener, 2.6 parts of o-phenylphenol mildew preventive and 2 parts of AMP-95pH regulator.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (1)
1. A method for preparing a high-scrubbing-resistance water-based paint by adopting recycled building micro powder is characterized by comprising the following steps:
(1) weighing 400 portions of regenerated building micro powder, 300 portions of emulsion, 200 portions of first functional auxiliary agent and 200 portions of deionized water according to the weight portions, fully mixing, and placing the mixture into ball milling equipment for ball milling to obtain water-based paint slurry A;
(2) then, 50-150 parts of deionized water and 22-32 parts of second functional auxiliary agent are fully mixed to obtain water-based paint slurry B;
(3) finally, mixing the water-based paint slurry A obtained in the step (1) and the water-based paint slurry B obtained in the step (2), mixing, and sieving to obtain undersize products, namely target products;
in the step (1), the ball milling process is ball milling at the rotating speed of 400-;
the regenerated building micro powder in the step (1) is prepared by the following method: crushing the construction waste, and sieving with a 80-mesh sieve to obtain the building material;
the first functional auxiliary agent in the step (1) comprises a dispersing agent, a defoaming agent and a thickening agent;
the second functional auxiliary agent in the step (2) comprises a dispersing agent, a defoaming agent, a film-forming auxiliary agent, a pH regulator, a preservative, a thickening agent, an anti-settling agent and a mildew preventive;
the construction waste is taken from a demolished building or structure and is selected from one or a combination of concrete, bricks or ceramics;
the components of the construction waste comprise: in percent by weight, it comprises SiO230-70％，Al2O316-48％，CaO 2-33％，Fe2O31-6% and other components not more than 2%.
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| PL395814A1 (en) * | 2011-08-01 | 2013-02-04 | Superbet J. Zawadzki I Wspólnicy Spólka Jawna | A way to increase the usability of finished building components made of concrete |
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