CN115521645B - Single-component inorganic zinc-rich antirust anti-slip coating - Google Patents
Single-component inorganic zinc-rich antirust anti-slip coating Download PDFInfo
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- CN115521645B CN115521645B CN202211401967.1A CN202211401967A CN115521645B CN 115521645 B CN115521645 B CN 115521645B CN 202211401967 A CN202211401967 A CN 202211401967A CN 115521645 B CN115521645 B CN 115521645B
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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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 discloses a single-component inorganic zinc-rich antirust anti-slip coating, belonging to antirust anti-slip coatings. The invention aims to provide a single-component inorganic zinc-rich antirust anti-slip coating with excellent antirust and anticorrosive properties and good anti-slip coefficient. The composite material is prepared by mixing the following components: an internal toughening polymerized siloxane resin, an anti-settling agent, a solvent, zinc powder, a flaky pigment and an anti-slip functional material. The internal toughening polymerized siloxane resin is prepared from the following raw materials: ethyl orthosilicate, isopropanol, water, a mixed solution A, a mixed solution B and gamma-aminopropyl triethoxysilane; the mixed solution A is formed by mixing hydrochloric acid and phytic acid according to a ratio of 1:1, and the mixed solution B is formed by mixing polymethyl hydrogen siloxane and gamma-glycidol ether oxypropyl trimethoxy silane; the preparation method comprises mixing ethyl orthosilicate, isopropanol, water and the mixed solution A, and heating; dropwise adding the mixed solution B, and reacting for 2-3 h; and adding gamma-aminopropyl triethoxysilane to regulate the pH value to 6.5-7.5.
Description
Technical Field
The invention relates to a single-component inorganic zinc-rich antirust anti-slip paint, in particular to a paint with an anti-slip coefficient meeting the technical condition JT/T722-2008 standard of anticorrosion coating of a steel structure of a highway bridge after coating an anti-slip friction surface, and the paint belongs to antirust and anti-slip paint.
Background
The coefficient of slip resistance is one of the main design parameters of friction type bolting, directly affecting the load bearing capacity of the component. The high-strength bolt connection has been developed into one of the main connection forms of welded steel structures, has the advantages of good stress performance, fatigue resistance, good earthquake resistance, high connection rigidity, simple and convenient construction and the like, and is widely applied to the construction site connection of building steel structures and bridge steel structures. For the connection of high-strength bolts, the anti-slip coefficient of the contact friction surface of the connecting plate is one of important factors affecting the connection bearing capacity; for a specific connecting node, after the specification and the number of the connecting bolts are determined, the processing method of the friction surface and the anti-slip coefficient value become main parameters for determining the connecting bearing capacity of the friction surface, so that the processing of the friction surface of the connecting plate is a very important ring for high-strength bolt connection construction.
With the development of new technology and new materials, the high-strength friction surface is treated conventionally and then coated with special inorganic zinc-rich antirust anti-skid paint (two components). The main components of the alloy are alkyl silicate, zinc powder, carborundum, auxiliary agent, alcohol solvent and the like, and the alloy has the characteristics of cathodic protection, good impact resistance, friction resistance and skid resistance. The Chinese patent publication No. CN 103146234A discloses an inorganic zinc-rich antirust anti-slip paint which consists of a first component, a second component and a third component. The component A consists of 40 to 60 solvent, 3 to 6 water and 30 to 50 ethyl silicate, the component B consists of 20 to 30 toughening resin, 5 to 10 auxiliary agent, 40 to 60 zinc powder, 30 to 40 silicon carbide and 5 to 10 solvent, and the component C consists of aluminum powder; the mixing mass ratio of the three components is that A, B and C= (1-3), 2-5 and 0.2-0.5. The invention adopts the hydrolysate of ethyl silicate, namely silanol, to react with zinc powder and active iron on the surface of steel to generate zinc silicate and zinc-silicate-iron compound, and the chemical bond is combined to ensure that the coating and the steel have certain adhesive force; zinc is smaller than the standard electrode of iron, and electrons are easy to lose, so that the anode can be sacrificed, and the iron is protected from corrosion; irregular anti-slip particles are added into the coating, so that proper roughness of the surface of a coating film layer is increased, sliding of other objects on the coating film layer is prevented or resisted, and an anti-slip effect is achieved.
It can be seen that the conventional inorganic zinc-rich antirust and anti-slip paint is usually a multi-component paint, and mainly has the following defects:
1) The adhesive adopted by the coating has high rigidity and brittleness, and the toughening resin is required to be added externally, so the preparation process is complex;
2) The paint consists of multiple components, so that the preparation process is complex and the construction process is troublesome.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to prepare the single-component inorganic zinc-rich antirust anti-slip paint with excellent antirust and anticorrosion performances and slip resistance coefficient meeting national and industry standard requirements through self-made synthesized internal toughening polymerized siloxane resin.
The single-component inorganic zinc-rich antirust anti-slip paint provided by the invention is prepared by mixing the following components in percentage by mass: 15-20% of internal toughening polymerized siloxane resin, 1-2% of anti-settling agent, 5-8% of solvent, 60-70% of zinc powder, 2-5% of flaky pigment and 5-12% of anti-slip functional material;
the internal toughening polymerized siloxane resin is prepared from the following raw materials in percentage by mass: 27-35% of tetraethoxysilane, 45-60% of isopropanol, 1-3% of water, 1-2% of mixed solution A, mixed solution B and gamma-aminopropyl triethoxysilane; the mixed solution A is formed by mixing hydrochloric acid with the concentration of 10% with phytic acid according to the ratio of 1:1, and the mixed solution B is formed by mixing polymethyl hydrosiloxane and gamma-glycidyl ether oxypropyl trimethoxy silane, wherein the polymethyl hydrosiloxane and the gamma-glycidyl ether oxypropyl trimethoxy silane account for 5-10% of the mass percentage of the internal toughening polymerized siloxane resin;
the preparation method of the internal toughening polymerized siloxane resin comprises the following steps:
1) Mixing ethyl orthosilicate, isopropanol, water and the mixed solution A, and heating to 50-70 ℃;
2) Dropwise adding the mixed solution B, and reacting for 2-3 hours at constant temperature;
3) And adding gamma-aminopropyl triethoxysilane to regulate the pH value to 6.5-7.5.
The anti-settling agent in the technical scheme is one or more of polyethylene wax, polyamide wax and bentonite.
The solvent in the technical scheme is one or more of ethanol, isopropanol, n-butanol and propylene glycol methyl ether acetate.
The particle size of the zinc powder in the technical scheme is 600-1250 meshes.
The flaky pigment in the technical scheme is one or more of wet sericite powder, mica iron oxide and flaky aluminum powder with the particle size of 600-1250 meshes.
The anti-slip functional material in the technical proposal is one or more of silicon carbide (silicon carbide), brown corundum, white corundum, quartz powder and fumed silica with the grain size of 600-1250 meshes.
Compared with the prior art, the invention has the following advantages due to the adoption of the technical scheme:
1) The invention introduces the polymethylhydrosiloxane into the self-made adhesive (internal toughening polymeric siloxane resin), so that the problems of high rigidity, brittleness, need of externally adding toughening resin and the like of the adhesive resin used by the traditional inorganic zinc-rich antirust anti-skid coating can be effectively solved.
2) Since gamma-aminopropyl triethoxysilane is introduced into the adhesive, the ether group, epoxy group and other groups on the adhesive can form stable chemical bonding with the steel base surface, so that the mechanical properties such as coating adhesion and the like are more excellent.
3) The anti-slip functional material is added into the coating, so that the roughness and hardness of the surface of the coating are increased, and the sliding between the connecting base surfaces can be well blocked, thereby achieving the anti-slip effect. Compared with the traditional two-component or three-component similar coating, the invention has simple preparation process, convenient and simple construction, excellent rust and corrosion resistance of the coating, and the anti-slip coefficient can completely reach the relevant national and industrial standards.
The following is a set of data obtained by comparing the coating of the invention with the traditional inorganic zinc-rich antirust anti-slip coating:
table 1:
as can be seen from Table 1, the neutral salt spray resistant antirust and anti-slip performance of the paint is obviously superior to that of the traditional inorganic zinc-rich antirust and anti-slip paint and the inorganic zinc-rich paint.
Detailed Description
The invention is further illustrated by the following examples:
example 1
1) Preparation of internal toughening polymeric siloxane resins
1.1 27g of ethyl orthosilicate, 56g of isopropanol, 1g of water and 1g of mixed solution A are uniformly mixed and heated to 50 ℃; the mixed solution A is formed by mixing hydrochloric acid with the concentration of 10% and phytic acid according to the ratio of 1:1;
1.2 Dropwise adding the mixed solution B, and reacting at constant temperature for 2h; the mixed solution B is prepared by mixing 10g of polymethyl hydrosiloxane and 5g of gamma-glycidol ether oxypropyl trimethoxy silane;
1.3 Gamma-aminopropyl triethoxysilane is added to adjust the pH to 6.5.
2) Preparation of the coating
2.1 15g of the prepared internal toughening polymerized siloxane resin is taken, and 1.5g of an anti-settling agent, 8g of a solvent, 65g of zinc powder, 3g of a flaky pigment and 7.5g of an anti-slip functional material are sequentially added to obtain a mixture;
2.2 Stirring the mixture for 30min by using a stirrer with the rotating speed of 1000rpm/min to obtain the coating.
Example 2 the steps are the same as in example 1.
Wherein, in the step 1.1), 32g of tetraethoxysilane, 54.4g of isopropanol, 2g of water, 1.6g of A mixed solution, the heating temperature is 60 ℃, 5g of polymethylhydrosiloxane, 5g of gamma-glycidoxypropyl trimethoxysilane in B mixed solution, the constant temperature reaction is 2.5h, and the pH value is 7.0.
18g of internal toughening polymerized siloxane resin, 1g of anti-settling agent, 6g of solvent, 60g of zinc powder, 5g of flaky pigment and 10g of anti-slip functional material in the step 2.1).
Example 3, each step was the same as example 1.
Wherein 35g of tetraethoxysilane, 45g of isopropanol, 3g of water, 2g of mixed solution A, the heating temperature of 70 ℃, 7.5g of polymethylhydrosiloxane, 7.5g of gamma-glycidoxypropyl trimethoxysilane and the constant temperature reaction time of 2.5h and the pH value of 7.5 are adopted in the step 1.1).
15g of internal toughening polymerized siloxane resin, 1g of anti-settling agent, 7g of solvent, 70g of zinc powder, 2g of flaky pigment and 5g of anti-slip functional material in the step 2.1).
Example 4, steps are the same as in example 1.
Wherein 35g of tetraethoxysilane, 53g of isopropanol, 2g of water, 1g of mixed solution A, the heating temperature is 55 ℃, 5g of polymethylhydrosiloxane, 5g of gamma-glycidoxypropyl trimethoxysilane and the constant temperature reaction time is 3h, and the pH value is 7.0 in the mixed solution B in the step 1.1).
20g of internal toughening polymerized siloxane resin, 2g of anti-settling agent, 5g of solvent, 60g of zinc powder, 2g of flaky pigment and 11g of anti-slip functional material in the step 2.1).
Example 5, steps are the same as in example 1.
Wherein 31g of tetraethoxysilane, 49g of isopropanol, 3g of water, 2g of mixed solution A, the heating temperature is 65 ℃, 5g of methyl hydrogen siloxane, 10g of gamma-glycidoxypropyl trimethoxysilane in the mixed solution B, the constant temperature reaction time is 3h, and the pH value is 6.5 in the step 1.1).
17g of inner toughening polymerized siloxane resin, 1g of anti-settling agent, 5g of solvent, 60g of zinc powder, 5g of flaky pigment and 12g of anti-slip functional material in the step 2.1).
Example 6, steps are the same as example 1.
Wherein 35g of tetraethoxysilane, 48g of isopropanol, 1g of water, 1g of mixed solution A, heating temperature of 60 ℃, 7.5g of polymethylhydrosiloxane, 7.5g of gamma-glycidoxypropyl trimethoxysilane and constant temperature of 2.5h, and pH value of 7.5 are adopted in the step 1.1).
16g of inner toughening polymerized siloxane resin, 2g of anti-settling agent, 6g of solvent, 64g of zinc powder, 4g of flaky pigment and 8g of anti-slip functional material in the step 2.1).
Example 7, steps are the same as in example 1.
Wherein, 28g of tetraethoxysilane, 48g of isopropanol, 2g of water, 2g of mixed solution A, the heating temperature is 50 ℃, 10g of polymethylhydrosiloxane, 10g of gamma-glycidoxypropyl trimethoxysilane in the mixed solution B, the constant temperature reaction time is 2h, and the pH value is 7.5 in the step 1.1).
19g of inner toughening polymerized siloxane resin, 1.5g of anti-settling agent, 5g of solvent, 62.5g of zinc powder, 3g of flaky pigment and 9g of anti-slip functional material in the step 2.1).
In each of the above examples, the anti-settling agent is one or more of polyethylene wax, polyamide wax, bentonite; the solvent is one or more of ethanol, isopropanol, n-butanol and propylene glycol methyl ether acetate; the particle size of the zinc powder is 600-1250 meshes; the flaky pigment is one or more of wet sericite powder, mica iron oxide and flaky aluminum powder with the particle size of 600-1250 meshes; the anti-slip functional material is one or more of silicon carbide, brown corundum, white corundum, quartz powder and fumed silica with the particle size of 600-1250 meshes.
Claims (6)
1. The single-component inorganic zinc-rich antirust anti-slip coating is characterized by being prepared by mixing the following components in percentage by mass: 15-20% of internal toughening polymerized siloxane resin, 1-2% of anti-settling agent, 5-8% of solvent, 60-70% of zinc powder, 2-5% of flaky pigment and 5-12% of anti-slip functional material;
the internal toughening polymerized siloxane resin is prepared from the following raw materials in percentage by mass: 27-35% of tetraethoxysilane, 45-60% of isopropanol, 1-3% of water, 1-2% of mixed solution A, mixed solution B and gamma-aminopropyl triethoxysilane; the mixed solution A is formed by mixing hydrochloric acid with the concentration of 10% with phytic acid according to the ratio of 1:1, and the mixed solution B is formed by mixing polymethyl hydrosiloxane and gamma-glycidyl ether oxypropyl trimethoxy silane, wherein the polymethyl hydrosiloxane and the gamma-glycidyl ether oxypropyl trimethoxy silane account for 5-10% of the mass percentage of the internal toughening polymerized siloxane resin;
the preparation method of the internal toughening polymerized siloxane resin comprises the following steps:
1) Mixing ethyl orthosilicate, isopropanol, water and the mixed solution A, and heating to 50-70 ℃;
2) Dropwise adding the mixed solution B, and reacting for 2-3 hours at constant temperature;
3) And adding gamma-aminopropyl triethoxysilane to regulate the pH value to 6.5-7.5.
2. The one-component inorganic zinc-rich rust inhibitive anti-slip coating according to claim 1, wherein: the anti-settling agent is one or more of polyethylene wax, polyamide wax and bentonite.
3. The one-component inorganic zinc-rich rust inhibitive anti-slip coating according to claim 1, wherein: the solvent is one or more of ethanol, isopropanol, n-butanol and propylene glycol methyl ether acetate.
4. The one-component inorganic zinc-rich rust inhibitive anti-slip coating according to claim 1, wherein: the particle size of the zinc powder is 600-1250 meshes.
5. The one-component inorganic zinc-rich rust inhibitive anti-slip coating according to claim 1, wherein: the flaky pigment is one or more of wet sericite powder, mica iron oxide and flaky aluminum powder with the particle size of 600-1250 meshes.
6. The one-component inorganic zinc-rich rust inhibitive anti-slip coating according to claim 1, wherein: the anti-slip functional material is one or more of silicon carbide, brown corundum, white corundum, quartz powder and fumed silica with the particle size of 600-1250 meshes.
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