CN111117494A - Antique brick polishing solution and preparation method and application thereof - Google Patents
Antique brick polishing solution and preparation method and application thereof Download PDFInfo
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- CN111117494A CN111117494A CN201911333929.5A CN201911333929A CN111117494A CN 111117494 A CN111117494 A CN 111117494A CN 201911333929 A CN201911333929 A CN 201911333929A CN 111117494 A CN111117494 A CN 111117494A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
Abstract
The invention discloses an antique brick polishing solution which is mainly prepared from the following raw materials in parts by weight: 5-15 parts of modified alumina, 20-30 parts of silicon dioxide, 55-65 parts of water, 2-5 parts of a silane coupling agent, 5-8 parts of a dispersing agent, 0.5-5 parts of a surfactant, 1-5 parts of an organic base and 0.5-5 parts of a passivating agent; the modified alumina is prepared from the following raw materials in percentage by weight: 70-85% of aluminum oxide, 0.5-5% of amino silane coupling agent, 8-15% of organic solvent and 2-10% of water; wherein the average particle size of the modified alumina is 10-100nm, and the average particle size of the modified silicon dioxide is 5-20 nm. Correspondingly, the invention also discloses a preparation method of the polishing solution for the antique brick and application of the polishing solution in the preparation process of the antique brick. The polishing solution can effectively polish the brick surface of the antique brick, so that the surface roughness of the brick surface is reduced to be below 200nm, and the glossiness of the brick surface is not changed. The stone-like performance of the antique brick is improved.
Description
Technical Field
The invention relates to the technical field of polishing solution, in particular to polishing solution for an antique brick, a polishing method and application.
Background
The antique brick is a glazed brick with antique effect, has unique glaze and classical flavor, and is a product popular with consumers. With the progress of the technology, the antique brick gradually expands various glaze effects, such as a wood antique brick, a carpet antique brick and a natural stone antique brick; the main research direction at present is to imitate the natural stone grains. However, the gloss of natural stone is widely distributed within 2-60 degrees; how to obtain the antique bricks with various glossiness through the adjustment of the process and the formula is a technical problem to be solved.
On the other hand, matte bricks, soft bricks and glossy bricks are currently on the market in terms of glossiness; the matte brick generally refers to a brick with the gloss of 10-30 degrees; the soft light brick is a brick with the glossiness of 30-60 degrees; the bright brick refers to a brick with the glossiness of more than 60 degrees; wherein, soft light brick and inferior light brick mainly regard archaize brick to and a small amount of polished tile. The bright brick mainly comprises a polished brick and a full-polished glaze.
At present, the main method for changing the surface glossiness of the ceramic tile is polishing, and generally, grinding heads with different meshes and water are adopted to polish the surface glaze layer of the ceramic tile so as to obtain ceramic tile glaze surfaces with different glossiness. However, in the conventional polishing process, in order to achieve higher glossiness (more than 60 degrees), the polishing amount of the surface of the ceramic tile is higher, a large amount of waste slag is generated, and meanwhile, the surface of the ceramic tile is excessively smooth and is not anti-skid. For improvement, the ceramic industry develops a semi-polishing (soft polishing) technology, and the obtained brick body has low glossiness, such as soft tiles, matt tiles (satin tiles) and the like. However, the prior production technology is difficult to produce ceramic tiles with the gloss degree of 2-10 degrees by polishing.
Further, for the polishing process, in addition to ensuring glossiness, it is necessary to ensure consideration of roughness of the surface after polishing, presence or absence of waviness of the surface, and the like. The technical common knowledge of a person skilled in the art is: only by increasing the number of polishing times and reducing the particle size of the grinding media can the roughness and the glossiness be reduced; i.e. the gloss and the roughness are varied synchronously. Namely, the brick with lower glossiness has higher surface roughness, better anti-skid performance and poorer stain resistance; the brick with higher glossiness has lower surface roughness, poorer anti-skid performance and better stain resistance. That is, it is difficult to simultaneously achieve low gloss and low roughness in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of providing the polishing solution for the antique brick, which can effectively polish the glaze surface of the antique brick, so that the glossiness of the glaze surface of the antique brick is less than or equal to 10, and the surface roughness is less than or equal to 200 nm.
The invention also aims to solve the technical problem of providing a preparation method of the polishing solution for the antique brick.
The invention also aims to solve the technical problem of providing the application of the polishing solution for the antique brick in the production process of the antique brick.
In order to solve the technical problems, the invention discloses an antique brick polishing solution which is mainly prepared from the following raw materials in parts by weight:
5-15 parts of modified alumina, 20-30 parts of silicon dioxide, 55-65 parts of water, 2-5 parts of a silane coupling agent, 5-8 parts of a dispersing agent, 0.5-5 parts of a surfactant, 1-5 parts of an organic base and 0.5-5 parts of a passivating agent;
the modified alumina is prepared from the following raw materials in percentage by weight:
70-85% of aluminum oxide, 0.5-5% of amino silane coupling agent, 8-15% of organic solvent and 2-10% of water;
wherein the average particle size of the modified alumina is 10-100nm, and the average particle size of the modified silicon dioxide is 5-20 nm.
As an improvement of the technical scheme, the preparation method of the modified alumina comprises the following steps:
(1) uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 20-60min at 50-80 ℃ to obtain a mixed solution;
(2) mixing the mixed solution with alumina, stirring and mixing for 20-40 minutes at 60-90 ℃ to obtain the modified alumina.
As an improvement of the technical scheme, the organic solvent is one or more of methanol, ethanol, propanol and acetone;
the aminosilane coupling agent is one or more of gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N- (β -aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane and gamma-aminopropylmethyldiethoxysilane.
As an improvement of the technical scheme, the organic solvent is propanol, and the aminosilane coupling agent is N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane.
As an improvement of the technical scheme, the silane coupling agent is gamma-mercaptopropyl trimethoxysilane and/or gamma-mercaptopropyl triethoxysilane;
the dispersing agent is one or more of ethylene glycol, glycerol and polyethylene glycol;
the surfactant is one or more of fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, polyoxyethylene alkanolamide, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate;
the organic base is one or more of dihydroxyethyl ethylenediamine, diethylenetriamine, ethylenediamine and diethanolamine;
the passivating agent is benzotriazole.
As an improvement of the technical scheme, the dispersant is selected from polyethylene glycol;
the surfactant is a mixture of fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate.
As an improvement of the technical scheme, the average grain diameter of the alumina is 60-100 nm; the average particle size of the silicon dioxide is 10-20 nm.
As the improvement of the technical proposal, the surface of the archaized brick is provided with a ground coat layer, an ink-jet pattern layer and a particle glaze layer;
before polishing, the glossiness of the archaized brick is 2-5 degrees, and the surface roughness is more than or equal to 10 mu m; after polishing, the glossiness of the archaized brick is 2-10 degrees, and the surface glossiness is less than or equal to 200 nm.
Correspondingly, the invention also discloses a preparation method of the polishing solution for the antique brick, which comprises the following steps:
(1) preparing modified alumina;
(2) uniformly mixing silicon dioxide, a silane coupling agent and a dispersing agent, and carrying out ball milling for 0.2-1h to obtain treated silicon dioxide;
(3) uniformly mixing the modified alumina and the treated silicon dioxide, heating to 90-120 ℃, and reacting for 0.5-1h to obtain composite abrasive particles;
(4) adding a surfactant into water, stirring uniformly, adding composite abrasive particles, and adding a passivating agent and organic alkali while stirring to obtain the finished product of the polishing solution for the archaized brick.
Correspondingly, the invention also discloses application of the polishing solution for the antique brick in production of the antique brick, wherein the polished antique brick has the glossiness of 2-10 degrees and the surface roughness of less than or equal to 200 nm.
The implementation of the invention has the following beneficial effects:
the invention provides an antique brick polishing solution, which adopts alumina and silica with different granularities as abrasives, and through a reasonable preparation process, the silica is loaded on the surface of the alumina, so that the elastic modulus of the alumina abrasives is reduced, the roughness of the surface of the antique brick is effectively reduced, and meanwhile, the glossiness of the brick surface of the antique brick is not improved. The archaized brick obtained by polishing with the polishing solution has a more real effect of imitating natural stones.
Drawings
FIG. 1 is a flow chart of a method for preparing the polishing solution for the antique brick of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the invention is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the invention.
The invention provides an antique brick polishing solution which is mainly prepared from the following raw materials in parts by weight: 5-15 parts of modified alumina, 20-30 parts of silicon dioxide, 55-65 parts of water, 2-5 parts of a silane coupling agent, 5-8 parts of a dispersing agent, 0.5-5 parts of a surfactant, 1-5 parts of an organic base and 0.5-5 parts of a passivating agent;
in the formula of the polishing solution, the modified alumina is a main grinding medium; because the hardness of the alumina is higher, the surface to be polished can be damaged to a greater extent in the grinding process; therefore, the invention modifies the alumina to improve the elastic modulus. Specifically, the modified alumina is prepared from the following raw materials in percentage by weight:
70-85% of aluminum oxide, 0.5-5% of amino silane coupling agent, 8-15% of organic solvent and 2-10% of water;
the preparation method of the modified alumina comprises the following steps:
(1) uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 20-60min at 50-80 ℃ to obtain a mixed solution;
(2) mixing the mixed solution with alumina, stirring and mixing for 20-40 minutes at 60-90 ℃ to obtain the modified alumina.
By the process, aminosilane can be loaded on the surface of alumina, so that silica can be conveniently and uniformly loaded on the surface of the alumina at a later stage, and the property of the alumina abrasive grain is changed.
In the formula of the modified alumina, the alumina is α -Al2O3、β-Al2O3、γ-Al2O3But is not limited thereto. The particle size of the alumina is 10-100nm, preferably 50-100 nm; the aluminum oxide with the granularity has a good grinding effect, and the polishing efficiency is improved.
In the formula of modified alumina, the aminosilane coupling agent is one or several of gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N- (β -aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane and gamma-aminopropylmethyldiethoxysilane, preferably N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane, its amino group content is high, it can be effectively combined with alumina, and can be conveniently connected with silicon dioxide at later stage, and the dosage of aminosilane coupling agent is 0.5-5%, preferably 1-3%.
In the formula of the modified alumina, the organic solvent is one or more of methanol, ethanol, propanol and acetone; preferably, propanol is selected; the boiling point is higher, and higher temperature can be adopted in the reaction process to promote the reaction of the alumina and the amino silane coupling agent. The amount of the organic solvent is 8-15%, preferably 10-15%.
In the formula of the polishing solution, the added weight portion of the silicon dioxide is 20-30 portions, and the average grain diameter is 5-20 nm; silica with smaller particle size is adopted and modified by a silane coupling agent, and can be well loaded on the outer layer of the modified alumina abrasive particles, so that the polishing solution disclosed by the invention can effectively reduce the surface roughness of the archaized brick, but does not improve the surface glossiness of the archaized brick. Preferably, the particle size of the silica is 10-20 nm.
Preferably, in order to improve the polishing effect of the polishing solution for the antique brick, the weight ratio of the silicon dioxide to the modified alumina is controlled to be (1.5-5): 1, preferably (2-3): 1; the silica in this ratio range can better cover the surface of the alumina abrasive grains.
In the formula of the polishing solution, a silane coupling agent selects gamma-mercaptopropyl trimethoxysilane and/or gamma-mercaptopropyl triethoxysilane; the two silane coupling agents can react with an aminosilane coupling agent loaded on the surface of modified alumina under a certain condition, so that silica with smaller particle size is loaded on the surface of the alumina. Preferably, the silane coupling agent is gamma-mercaptopropyltriethoxysilane. The adding weight portion of the silane coupling agent is 2-5 portions.
In the formula of the polishing solution, the dispersing agent is one or more of ethylene glycol, glycerol and polyethylene glycol; the dispersing agent can promote the dispersion of the silica, thereby promoting the modification of the silica by the silane coupling agent. Preferably, the dispersant is polyethylene glycol, such as PEG200, PEG400, PEG600, and the like, but is not limited thereto. The addition weight portion of the dispersant is 5-8 portions.
In the formula of the polishing solution, the organic base is one or more of hydroxyethyl ethylenediamine, diethylenetriamine, ethylenediamine and diethanolamine; the glaze layer of the surface of the antique brick contains a large amount of glass, and the glaze layer can be greatly damaged by adopting inorganic alkali with strong alkalinity, so that the organic alkali has a certain buffering effect and can also adjust the pH value of the polishing solution. Preferably, the organic base is diethanolamine. The organic base is added in 1-5 weight portions, preferably 2-4 weight portions.
In the polishing solution formulation of the present invention, benzotriazole can be used as the passivating agent, but is not limited thereto. The passivant is added in 0.5-5 parts by weight, preferably 1-3 parts by weight.
Because the main abrasive particles in the polishing solution are alumina with silica loaded on the surface, the abrasive particles are easy to agglomerate, flocculate and delaminate, and the polishing solution is unstable. For this purpose, the polishing solution of the present invention further contains 0.5 to 5 parts, preferably 2 to 5 parts, of a surfactant. Specifically, the surfactant may be a nonionic surfactant and/or an anionic surfactant. Anions generated by the ionization of the anionic surfactant can be mutually exclusive with hydroxyl on the surface of the abrasive particles, so that the phenomena of agglomeration, flocculation and delamination do not occur.
Wherein, the nonionic surfactant is fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyoxyethylene alkanolamide, etc., but is not limited thereto; anionic surfactants such as sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, etc., but not limited thereto. Preferably, a mixture of fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate is selected; and fatty alcohol polyoxyethylene ether: sodium dodecyl benzene sulfonate ═ 1 (2-3).
In order to play the role of the polishing solution for the antique brick, the following preparation method is combined; referring to fig. 1, the preparation method of the polishing solution for the archaized brick of the invention comprises the following steps:
s1: preparing modified alumina;
specifically, S1 includes:
s11: uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 20-60min at 50-80 ℃ to obtain a mixed solution;
specifically, the mixing temperature is controlled to be lower than 80 ℃ so as to reduce the volatilization amount of the organic solvent as much as possible; the dispersibility of the system is enhanced.
S12: mixing the mixed solution with alumina, stirring and mixing for 20-40 minutes at 60-90 ℃ to obtain the modified alumina.
Specifically, the reaction temperature is 60-90 ℃, and the organic solvent and water can be gradually evaporated within the range; thereby effectively bonding the aminosilane coupling agent on the surface of the alumina abrasive particles.
S2: uniformly mixing silicon dioxide, a silane coupling agent and a dispersing agent, and carrying out ball milling for 0.2-1h to obtain treated silicon dioxide;
the silica and the silane coupling agent can be well combined through a ball milling loading process.
S3: uniformly mixing the modified alumina and the treated silicon dioxide, heating to 90-120 ℃, and reacting for 0.5-1h to obtain composite abrasive particles;
specifically, at this temperature, the amino coupling agent on the surface of the modified alumina reacts with the silane coupling agent in the treated silica, so that the silica is supported on the surface of the alumina, and the elastic modulus of the abrasive particles is improved.
S4: adding a surfactant into water, stirring uniformly, adding composite abrasive particles, and adding a passivating agent and organic alkali while stirring to obtain the finished product of the polishing solution for the archaized brick.
Correspondingly, the invention also discloses application of the polishing solution for the archaized brick in the production process of the archaized brick. Wherein, the surface of the archaized brick is provided with a ground coat layer, an ink-jet pattern layer and a particle glaze layer; before polishing, the glossiness of the archaized brick is 2-5 degrees, and the surface roughness is more than or equal to 10 mu m; after polishing, the glossiness of the archaized brick is 2-10 degrees, and the surface glossiness is less than or equal to 200 nm.
It should be noted that, on the surface of the traditional full-polished and polished tile, the glaze layer generally comprises ground coat, inkjet pattern and overglaze, or ground coat, inkjet pattern, particle glaze and overglaze; thus, during polishing, it is the glaze layer that is polished. The particle glaze layer is not arranged on the surface of the antique brick, and the polishing medium directly acts on the particle glaze layer. The general particle glaze layer contains a large amount of mica particles, the hardness of the mica particles is small, and when the general polishing process is adopted for polishing, the mica sheets are easily subjected to brittle damage in the previous rough polishing process to form pits; therefore, a large amount of fine polishing is required to eliminate such pits, reducing the roughness as a whole; however, the fine polishing can improve the glossiness of the antique brick. The polishing solution of the invention can not cause brittle damage to the mica structure, and only can carry out plastic rheological processing on the surface of the polished tile, thus reducing the roughness and not improving the glossiness.
The invention is illustrated below in specific examples:
example 1
The embodiment provides an antique brick polishing solution, which comprises the following components in part by weight:
5 parts of modified alumina, 20 parts of silicon dioxide, 60 parts of water, 2 parts of a silane coupling agent, 5 parts of a dispersing agent, 5 parts of a surfactant, 4 parts of an organic base and 1 part of a passivating agent;
the formula of the modified alumina is as follows:
80% of alumina, 4% of amino silane coupling agent, 12% of organic solvent and 4% of water;
wherein the alumina is gamma-Al2O3The average particle size is 80 nm; the silane coupling agent is gamma-mercaptopropyl-trimethoxysilane; glycol is selected as the dispersant; the surfactant is sodium dodecyl benzene sulfonate; the organic base is dihydroxyethyl ethylenediamine; the amino silane coupling agent is gamma-aminopropyl methyl diethoxy silane; the organic solvent is ethanol; the average particle size of the silica was 5 nm.
The preparation method comprises the following steps:
(1) preparing modified alumina;
the method specifically comprises the following steps:
(1.1) uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 40min at 50 ℃ to obtain a mixed solution;
(1.2) mixing the mixed solution with alumina, and stirring and mixing for 40 minutes at 60 ℃ to obtain modified alumina;
(2) uniformly mixing silicon dioxide, a silane coupling agent and a dispersing agent, and carrying out ball milling for 1h to obtain treated silicon dioxide;
(3) uniformly mixing the modified alumina and the treated silicon dioxide, heating to 110 ℃, and reacting for 0.8h to obtain composite abrasive particles;
(4) adding a surfactant into water, stirring uniformly, adding composite abrasive particles, and adding a passivating agent and organic alkali while stirring to obtain the finished product of the polishing solution for the archaized brick.
Example 2
The embodiment provides an antique brick polishing solution, which comprises the following components in part by weight:
15 parts of modified alumina, 30 parts of silicon dioxide, 56 parts of water, 3 parts of gamma-mercaptopropyltriethoxysilane, 6 parts of PEG 4006, 3 parts of surfactant, 2 parts of diethanolamine and 1 part of benzotriazole;
the formula of the modified alumina is as follows:
75% of alumina, 4.5% of N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane, 13.5% of propanol and 7% of water;
wherein the alumina is α -Al2O3The average particle size is 60 nm; the average particle size of the silicon dioxide is 15 nm; the surfactant is a mixture of fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate, and the fatty alcohol-polyoxyethylene ether: sodium dodecylbenzenesulfonate 1: 2.
The preparation method comprises the following steps:
(1) preparing modified alumina;
the method specifically comprises the following steps:
(1.1) uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 30min at 70 ℃ to obtain a mixed solution;
(1.2) mixing the mixed solution with alumina, and stirring and mixing the mixture for 30 minutes at 80 ℃ to obtain modified alumina;
(2) uniformly mixing silicon dioxide, a silane coupling agent and a dispersing agent, and carrying out ball milling for 0.3h to obtain treated silicon dioxide;
(3) uniformly mixing the modified alumina and the treated silicon dioxide, heating to 115 ℃, and reacting for 0.6h to obtain composite abrasive particles;
(4) adding a surfactant into water, stirring uniformly, adding composite abrasive particles, and adding a passivating agent and organic alkali while stirring to obtain the finished product of the polishing solution for the archaized brick.
Example 3
The embodiment provides an antique brick polishing solution, which comprises the following components in part by weight:
10 parts of modified alumina, 20 parts of silicon dioxide, 55 parts of water, 4 parts of gamma-mercaptopropyltriethoxysilane, 6 parts of PEG 6006, 3 parts of surfactant, 1 part of diethanolamine and 1 part of benzotriazole;
the formula of the modified alumina is as follows:
75% of alumina, 4.5% of N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane, 13.5% of propanol and 7% of water;
wherein the alumina is α -Al2O3The average particle size is 90 nm; the average particle size of the silicon dioxide is 10 nm; the surfactant is a mixture of fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate, and the fatty alcohol-polyoxyethylene ether: sodium dodecylbenzenesulfonate 1: 3.
The preparation method comprises the following steps:
(1) preparing modified alumina;
the method specifically comprises the following steps:
(1.1) uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 30min at 70 ℃ to obtain a mixed solution;
(1.2) mixing the mixed solution with alumina, and stirring and mixing the mixture for 30 minutes at 80 ℃ to obtain modified alumina;
(2) uniformly mixing silicon dioxide, a silane coupling agent and a dispersing agent, and carrying out ball milling for 0.3h to obtain treated silicon dioxide;
(3) uniformly mixing the modified alumina and the treated silicon dioxide, heating to 115 ℃, and reacting for 0.6h to obtain composite abrasive particles;
(4) adding a surfactant into water, stirring uniformly, adding composite abrasive particles, and adding a passivating agent and organic alkali while stirring to obtain the finished product of the polishing solution for the archaized brick.
Comparative example 1
The comparative example provides a polishing solution for archaized bricks, which comprises the following formula:
10 parts of silica sol, 25 parts of aluminum sol, 2 parts of sodium dodecyl benzene sulfonate, 56 parts of water, 2 parts of ammonia water and 3 parts of silane coupling agent;
the preparation method comprises the following steps: the preparation method comprises the steps of uniformly mixing various raw materials.
Comparative example 2
The comparative example provides a polishing solution for archaized bricks, which comprises the following formula:
35 parts of silica sol, 2 parts of sodium dodecyl benzene sulfonate, 56 parts of water, 2 parts of ammonia water and 3 parts of silane coupling agent;
the preparation method comprises the following steps: the preparation method comprises the steps of uniformly mixing various raw materials.
Comparative example 3
The comparative example provides a polishing solution for archaized bricks, which comprises the following formula:
35 parts of alumina sol, 2 parts of sodium dodecyl benzene sulfonate, 56 parts of water, 2 parts of ammonia water and 3 parts of silane coupling agent;
the preparation method comprises the following steps: the preparation method comprises the steps of uniformly mixing various raw materials.
Example 4 polishing experiment
And (3) preparing a sample to be polished: polishing an antique brick produced by a certain manufacturer; specifically, a ground glaze layer, an ink-jet pattern layer and a particle glaze layer are sequentially arranged on the surface of the antique brick; before polishing, the glossiness is 4 degrees, and the surface roughness is 12 mu m;
the specific polishing process is as follows:
polishing by adopting elastic module groups of 240 meshes, 300 meshes, 400 meshes, 600 meshes, 800 meshes and 1000 meshes in sequence; in the polishing process, the rotation speed of the grinding wheel is 1000rpm, the applied pressure is 0.2MPa, and the flow of the polishing solution is 100 mL/min.
The polishing liquids of examples 1 to 3 and comparative examples 1 to 3 were subjected to polishing experiments, and the results were as follows:
| degree of gloss | Roughness/nm | |
| Example 1 | 8 | 180 |
| Example 2 | 8 | 150 |
| Example 3 | 6 | 120 |
| Comparative example 1 | 25 | 110 |
| Comparative example 2 | 19 | 160 |
| Comparative example 3 | 35 | 90 |
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The polishing solution for the antique bricks is characterized by being mainly prepared from the following raw materials in parts by weight:
5-15 parts of modified alumina, 20-30 parts of silicon dioxide, 55-65 parts of water, 2-5 parts of a silane coupling agent, 5-8 parts of a dispersing agent, 0.5-5 parts of a surfactant, 1-5 parts of an organic base and 0.5-5 parts of a passivating agent;
the modified alumina is prepared from the following raw materials in percentage by weight:
70-85% of aluminum oxide, 0.5-5% of amino silane coupling agent, 8-15% of organic solvent and 2-10% of water;
wherein the average particle size of the modified alumina is 10-100nm, and the average particle size of the modified silicon dioxide is 5-20 nm.
2. The polishing solution for antique bricks according to claim 1, wherein the preparation method of the modified alumina is as follows:
(1) uniformly mixing an aminosilane coupling agent, water and an organic solvent, and reacting for 20-60min at 50-80 ℃ to obtain a mixed solution;
(2) mixing the mixed solution with alumina, stirring and mixing for 20-40 minutes at 60-90 ℃ to obtain the modified alumina.
3. The polishing solution for antique bricks according to claim 1 or 2, wherein the organic solvent is one or more of methanol, ethanol, propanol and acetone;
the aminosilane coupling agent is one or more of gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N- (β -aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (β -aminoethyl) -gamma-aminopropyltrimethoxysilane and gamma-aminopropylmethyldiethoxysilane.
4. The polishing solution for antique bricks according to claim 3, wherein the organic solvent is propanol and the aminosilane coupling agent is N- (β -aminoethyl) - γ -aminopropyltrimethoxysilane.
5. The polishing solution for antique bricks according to claim 1, wherein the silane coupling agent is gamma-mercaptopropyl-trimethoxysilane and/or gamma-mercaptopropyl-triethoxysilane;
the dispersing agent is one or more of ethylene glycol, glycerol and polyethylene glycol;
the surfactant is one or more of fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, polyoxyethylene alkanolamide, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate;
the organic base is one or more of dihydroxyethyl ethylenediamine, diethylenetriamine, ethylenediamine and diethanolamine;
the passivating agent is benzotriazole.
6. The polishing solution for antique bricks according to claim 1, wherein the dispersing agent is selected from polyethylene glycol;
the surfactant is a mixture of fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate.
7. The polishing solution for antique bricks according to claim 1, wherein the alumina has an average particle size of 60 to 100 nm; the average particle size of the silicon dioxide is 10-20 nm.
8. The polishing solution for antique bricks according to claim 1, wherein the surface of the antique brick is provided with a ground coat layer, an ink-jet pattern layer and a particle glaze layer;
before polishing, the glossiness of the archaized brick is 2-5 degrees, and the surface roughness is more than or equal to 10 mu m; after polishing, the glossiness of the archaized brick is 2-10 degrees, and the surface roughness is less than or equal to 200 nm.
9. The method for preparing the polishing solution for antique bricks according to any one of claims 1 to 8, which comprises the following steps:
(1) preparing modified alumina;
(2) uniformly mixing silicon dioxide, a silane coupling agent and a dispersing agent, and carrying out ball milling for 0.2-1h to obtain treated silicon dioxide;
(3) uniformly mixing the modified alumina and the treated silicon dioxide, heating to 90-120 ℃, and reacting for 0.5-1h to obtain composite abrasive particles;
(4) adding a surfactant into water, stirring uniformly, adding composite abrasive particles, and adding a passivating agent and organic alkali while stirring to obtain the finished product of the polishing solution for the archaized brick.
10. Use of the polishing solution according to any one of claims 1 to 8 for the production of antique bricks, wherein the polished antique bricks have a gloss of 2 to 10 degrees and a surface roughness of 200nm or less.
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| CN201911333929.5A CN111117494A (en) | 2019-12-23 | 2019-12-23 | Antique brick polishing solution and preparation method and application thereof |
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| CN114163931A (en) * | 2021-12-09 | 2022-03-11 | 深圳市拍档科技有限公司 | Aluminum alloy liquid fine polishing wax and preparation method thereof |
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| CN116855176B (en) * | 2023-06-26 | 2024-03-12 | 东莞市海发科技发展有限公司 | Metal surface treatment polishing solution and preparation method thereof |
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