CN112300702A - Rusty protective coating with rust conversion function and preparation method thereof - Google Patents
Rusty protective coating with rust conversion function and preparation method thereof Download PDFInfo
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- CN112300702A CN112300702A CN202011243581.3A CN202011243581A CN112300702A CN 112300702 A CN112300702 A CN 112300702A CN 202011243581 A CN202011243581 A CN 202011243581A CN 112300702 A CN112300702 A CN 112300702A
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- 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention relates to a rusty protective coating with a rust conversion function and a preparation method thereof. The rust-bearing protective coating comprises 10-40 parts of rust converting agent, 60-90 parts of acidic resin emulsion, defoaming agent with the total mass of the acidic resin emulsion and the rust converting agent being 1-5 thousandths, thickening agent with the total mass of the acidic resin emulsion and the rust converting agent being 1-5 thousandths, and wetting agent with the total mass of the acidic resin emulsion and the rust converting agent being 1-5 thousandths. The rust-containing protective coating with the rust conversion function is uniformly coated on the surface of a rusted steel bar, the rust conversion layer can be dissolved and generated into a polymer protective film under the normal temperature condition, the utilization rate of the steel bar is improved by effectively converting the rust layer, the bonding and anchoring performance of the coating and the concrete is excellent when the reinforced concrete structure is poured again, the rust resistance effect is achieved while the performance of the concrete is not influenced, and the rust-containing protective coating has the characteristics of environmental protection, low cost, strong adhesive force, high corrosion resistance and the like.
Description
Technical Field
The invention relates to a rust-bearing protective coating material, in particular to a long-acting polymer protective coating with a rust conversion function. The invention also relates to a preparation method of the protective coating.
Background
In a general atmospheric environment, the alkalinity of concrete caused by carbonization is the main reason of corrosion of steel bars in the concrete, but because sea sand, chlorine salt antifreeze and other materials with high chloride ion content are used, or because chloride ions in the environment gradually invade into the concrete, when the surface of the steel bars reaches a certain concentration, the steel bars can be corroded even if the alkalinity of the concrete is not reduced. Because of uncertainty existing in the transportation and construction processes, corrosion products are generated on the surface of the steel bar before pouring, the mechanical property of the steel bar is obviously reduced, and the safety and the durability of a building structure are reduced. The investment benefit of the project and the reasonable utilization of resources are also influenced when the device is used.
The existing rust removal technology adopts a two-step method, firstly rust converting agent is used for converting rust to form a stable conversion layer, then coating is carried out by using coating to increase the adhesive force of the coating, and the protection method has a complex flow and the effect is difficult to guarantee. Common steel products with rust and corrosion prevention contain a large amount of inorganic acid such as phosphoric acid, phytic acid, tannic acid and other components, and if residues exist on the surface of a base material, the residues can react with the base material to cause further corrosion so as to influence the mechanical property of the base material; some of the products also contain phosphate, chromate and nitrite, which affect the health of operators and corrode surrounding equipment and environment. Chinese patent publication No. CN106835105A provides an organic rust converting agent, which is applied to the surface of a strip steel material to convert rust. The disadvantages are that the content of inorganic acid is high, and the corrosion to the base material and the cured paint film is high; meanwhile, the sodium benzenesulfonate is contained, so that the sodium benzenesulfonate is harmful to the environment and operators. Chinese patent publication No. CN103882418A provides a rust layer growth inhibitor for rusted steel, which protects a substrate by converting an existing rust layer into an inert protective layer. But the disadvantages are that the preparation process is complex and the practical field engineering application has certain limitation.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the rusty protective coating with the rust conversion function and the preparation method thereof, the rust layer is converted into the corrosion-resistant passive film, the rusty protective coating of the polymer protective film can be formed, the rust layer is effectively converted, and the rust resistance effect is realized, so that the utilization rate of the steel bar is improved.
The technical scheme of the invention is as follows:
a rusty protective coating with a rust conversion function is characterized by comprising the following raw materials: 60-90 parts of acid resin emulsion with solid content of 60% and 10-40 parts of rust transforming agent; 1-5 per mill of the total mass of the acidic resin emulsion and the rust converting agent, a wetting agent and 1-5 per mill of the total mass of the acidic resin emulsion and the rust converting agent; the parts are parts by mass;
the rust converting agent is prepared from the following raw materials in proportion: according to the mass portion, 1-5 portions of phosphoric acid, 1-5 portions of tannic acid, 5-10 portions of citric acid, 5-10 portions of benzoic acid, 5-15 portions of n-octanoic acid, 5-10 portions of ethanol, 5-10 portions of secondary alkyl sodium sulfonate, 5-15 portions of alcamines compounds and 10-20 portions of deionized water.
Preferably, 80 parts of acid resin emulsion with solid content of 60 percent, 20 parts of rust converting agent; 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, a wetting agent and 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent;
the rust converting agent is prepared from the following raw materials in proportion: the cleaning agent consists of 5 parts of phosphoric acid, 5 parts of tannic acid, 10 parts of citric acid, 10 parts of benzoic acid, 15 parts of n-octanoic acid, 10 parts of ethanol, 10 parts of sodium secondary alkyl sulfonate, 15 parts of alcohol amine compounds and 20 parts of deionized water;
wherein the phosphoric acid mass concentration is 30%, the tannic acid mass concentration is 50%, the citric acid mass concentration is 40%, the benzoic acid mass concentration is 50%, the n-caprylic acid mass concentration is 60%, and the ethanol mass concentration is 20%.
The mass concentration of the phosphoric acid is 20-30%; the mass concentration of the tannic acid is 50-60%; the mass concentration of the citric acid is 40-50%; the mass concentration of the benzoic acid is 40-50%; the mass concentration of the n-octanoic acid is 50-60%; the mass concentration of the ethanol is 20-60%.
The defoaming agent is a high-molecular organic silicon modified polymer, the thickening agent is a cross-linking high-molecular emulsion thickening agent, and the wetting agent is polyether siloxane copolymer.
The preparation method of the rusty protective coating with the rust conversion function is characterized by comprising the following steps of:
1) dissolving tannic acid, phosphoric acid and citric acid in deionized water under the condition of water bath at 60 ℃ to form a component A; dissolving benzoic acid and n-caprylic acid in ethanol to form a component B;
2) uniformly stirring and mixing the component A and the component B, and adding metered secondary alkyl sodium sulfonate and alcohol amine compounds to form a weak acid rust converting agent;
3) and adding the rust conversion agent into the acidic resin emulsion, and adding paint auxiliaries such as a defoaming agent, a wetting agent, a thickening agent and the like to prepare the rust-bearing protective paint with the rust conversion function. Compared with the prior art, the method has the advantages that,
the invention has the following characteristics:
firstly, a rust converting agent is innovatively added into the coating, and the coating is used for converting rust and protecting a building component for a long time by using a one-step method; secondly, the amount of the inorganic acid in the coating is less, and the existence of the organic acid and the chelating action of the organic acid and the metal obviously improve the derusting and protecting effects on the steel; and thirdly, the combination of the weak acid rust converting agent and the acidic resin emulsion greatly improves the adhesive force of the rust-containing protective coating, completely converts the rust layer and forms a polymer film with long-acting protective capacity on steel, and obviously improves the corrosion resistance of the reinforced concrete structure.
The positive effects of the invention are embodied in the following aspects:
1) adopting aqueous environment-friendly acidic resin emulsion as base resin;
2) the rust converting agent is prepared by adding organic acid components such as citric acid, benzoic acid, n-caprylic acid and the like, and reacting the components with alcohol amine, wherein the dosage of inorganic acid such as phosphoric acid, tannic acid and the like in the rust converting agent is less, and the rust converting agent is weak in acidity and close to neutrality. Wherein, the organic acid improves the permeability, avoids the secondary corrosion to the base material caused by the over-quick reaction, and chelates with the base material during the derusting and repairing, thereby playing a role in protection;
3) and the weak acid rust converting agent is combined with the acid resin emulsion, so that the obtained rust-carrying protective coating has good long-term stability. The rusted steel bar coated with the rusted protective coating has excellent bonding and anchoring performance with concrete when being poured again, and the formed protective coating has high corrosion resistance and long protection time.
4) The rusty protective coating has the advantages of low cost and simple preparation method, and is more convenient to popularize and apply in the repair and protection of actual engineering steel.
The rust-containing protective coating prepared by the invention has excellent performance, is simple to prepare and has no adverse effect. The rust layer can be effectively transformed, corrosion of a corrosion medium to the steel bar is prevented, and the utilization rate of the steel bar is improved. Can be widely applied to buildings in marine environment areas, industrial buildings and civil buildings which are mainly corroded by chlorine salt. The rusty protective coating has the characteristics of adjustable performance, low cost and convenience and quickness in construction.
Other advantages of the invention are apparent from the rest of the description.
Drawings
FIG. 1 is a bar graph comparing polarization resistance of rusty protective coatings formed according to different formulations of examples.
FIG. 2 is a bar graph comparing corrosion current density values for the rust preventive coatings formed according to different example formulations.
FIG. 3 is a bar graph comparing adhesion of rust preventive coatings formed according to different formulations in examples.
Detailed Description
The invention will be described in more detail below with reference to preferred embodiments and the accompanying drawings.
Example 1:
the materials are prepared according to the following weight: the solid content of the acidic resin emulsion is 60 percent, the mass of the acidic resin emulsion is 1 per mill of the defoaming agent, the mass of the acidic resin emulsion is 1 per mill of the wetting agent, and the mass of the acidic resin emulsion is 1 per mill of the thickening agent.
When the rust-carrying protective coating is prepared, the steps are as follows:
1) weighing the components in parts by weight;
2) and sequentially adding paint auxiliaries such as a defoaming agent, a wetting agent, a thickening agent and the like into the acidic resin emulsion. And obtaining the rust-bearing protective coating.
Example 2:
90 parts of acid resin emulsion with solid content of 60 percent and 10 parts of rust transforming agent; the defoaming agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, the wetting agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, and the thickening agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent.
Wherein the rust converting agent is prepared from the following raw materials in percentage by mass: the cleaning agent consists of 1 part of phosphoric acid, 1 part of tannic acid, 5 parts of citric acid, 5 parts of benzoic acid, 5 parts of n-octanoic acid, 5 parts of ethanol, 5 parts of secondary alkyl sodium sulfonate, 5 parts of alcohol amine compounds and 10 parts of deionized water in parts by mass.
Wherein the phosphoric acid mass concentration is 25%, the tannic acid mass concentration is 55%, the citric acid mass concentration is 50%, the benzoic acid mass concentration is 45%, the n-caprylic acid mass concentration is 55%, and the ethanol mass concentration is 35%.
When the rust protective coating is prepared, the rust protective coating is prepared according to the following steps:
1) weighing the components in parts by weight;
2) dissolving tannic acid, phosphoric acid and citric acid in deionized water in 60 deg.C water bath to obtain component A. And dissolving benzoic acid and n-caprylic acid in ethanol to form a component B.
3) Uniformly stirring and mixing the component A and the component B, and adding metered secondary alkyl sodium sulfonate and alcohol amine compounds to form the weak acid rust converting agent.
4) Adding 10% of rust converting agent by mass into the acidic resin emulsion, and adding paint auxiliaries such as a defoaming agent, a wetting agent and a thickening agent. And obtaining the rust-bearing protective coating.
Example 3:
80 parts of acid resin emulsion with solid content of 60% and 20 parts of rust transforming agent; the defoaming agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, the wetting agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, and the thickening agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent.
The rust converting agent is prepared from the following raw materials in proportion: the cleaning agent consists of 5 parts of phosphoric acid, 5 parts of tannic acid, 10 parts of citric acid, 10 parts of benzoic acid, 15 parts of n-octanoic acid, 10 parts of ethanol, 10 parts of sodium secondary alkyl sulfonate, 15 parts of alcohol amine compounds and 20 parts of deionized water.
Wherein the phosphoric acid mass concentration is 30%, the tannic acid mass concentration is 50%, the citric acid mass concentration is 40%, the benzoic acid mass concentration is 50%, the n-caprylic acid mass concentration is 60%, and the ethanol mass concentration is 20%.
When the rust protective coating is prepared, the rust protective coating is prepared according to the following steps:
1) weighing the components in parts by weight;
2) dissolving tannic acid, phosphoric acid and citric acid in deionized water in 60 deg.C water bath to obtain component A. And dissolving benzoic acid and n-caprylic acid in ethanol to form a component B.
3) Uniformly stirring and mixing the component A and the component B, and adding metered secondary alkyl sodium sulfonate and alcohol amine compounds to form the weak acid rust converting agent.
4) Adding 20% of rust converting agent by mass into the acidic resin emulsion, and adding paint auxiliaries such as a defoaming agent, a wetting agent and a thickening agent. And obtaining the rust-bearing protective coating.
Example 4:
70 parts of acid resin emulsion with solid content of 60 percent and 30 parts of rust transforming agent; the defoaming agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, the wetting agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, and the thickening agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent.
The rust converting agent is prepared from the following raw materials in proportion: the cleaning agent consists of 2 parts of phosphoric acid, 3 parts of tannic acid, 6 parts of citric acid, 6 parts of benzoic acid, 10 parts of n-octanoic acid, 6 parts of ethanol, 6 parts of sodium secondary alkyl sulfonate, 10 parts of alcohol amine compounds and 15 parts of deionized water. Wherein the phosphoric acid mass concentration is 20%, the tannic acid mass concentration is 60%, the citric acid mass concentration is 45%, the benzoic acid mass concentration is 40%, the n-caprylic acid mass concentration is 55%, and the ethanol mass concentration is 60%. When the rust protective coating is prepared, the rust protective coating is prepared according to the following steps:
1) weighing the components in parts by weight;
2) dissolving tannic acid, phosphoric acid and citric acid in deionized water in 60 deg.C water bath to obtain component A. And dissolving benzoic acid and n-caprylic acid in ethanol to form a component B.
3) Uniformly stirring and mixing the component A and the component B, and adding metered secondary alkyl sodium sulfonate and alcohol amine compounds to form the weak acid rust converting agent.
4) Adding 30% of rust converting agent by mass into the acidic resin emulsion, and adding paint auxiliaries such as a defoaming agent, a wetting agent and a thickening agent. And obtaining the rust-bearing protective coating.
Example 5:
60 parts of acid resin emulsion with solid content of 60 percent and 40 parts of rust transforming agent; the defoaming agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, the wetting agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, and the thickening agent is 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent.
The rust converting agent is prepared from the following raw materials in proportion: the cleaning agent consists of 3 parts of phosphoric acid, 3 parts of tannic acid, 7 parts of citric acid, 7 parts of benzoic acid, 12 parts of n-octanoic acid, 7 parts of ethanol, 7 parts of sodium secondary alkyl sulfonate, 10 parts of alcohol amine compounds and 15 parts of deionized water. Wherein the phosphoric acid mass concentration is 30%, the tannic acid mass concentration is 55%, the citric acid mass concentration is 40%, the benzoic acid mass concentration is 45%, the n-caprylic acid mass concentration is 50%, and the ethanol mass concentration is 50%.
When the rust protective coating is prepared, the rust protective coating is prepared according to the following steps:
1) weighing the components in parts by weight;
2) dissolving tannic acid, phosphoric acid and citric acid in deionized water in 60 deg.C water bath to obtain component A. And dissolving benzoic acid and n-caprylic acid in ethanol to form a component B.
3) Uniformly stirring and mixing the component A and the component B, and adding metered secondary alkyl sodium sulfonate and alcohol amine compounds to form the weak acid rust converting agent.
4) Adding 40% of rust converting agent by mass into the acidic resin emulsion, and adding paint auxiliaries such as a defoaming agent, a wetting agent and a thickening agent. And obtaining the rust-bearing protective coating.
In examples 1 to 5, the defoaming agent used was a high molecular silicone-modified polymer such as mineral oil, polyether-modified silicone oil, polyacrylate, and the like. The thickener is cross-linked polymer emulsion thickener, such as hydroxymethyl cellulose series or redispersed resin powder. The wetting agent used is a polyether siloxane copolymer, such as polyether modified silanes and the like.
In examples 1 to 5, the acidic resin emulsion used was a polyacrylate emulsion, a carboxyl-terminated alkyd resin emulsion, a carboxyl-based polyurethane emulsion, or the like. The alcohol amine compound is ethanolamine, diethanolamine, triethanolamine, etc.
In examples 1 to 5, the parts are all parts by mass.
The following are comparisons of the use method and the use effect of the rust-carrying protective coating prepared in the embodiment of the invention, and specifically are as follows:
firstly, cleaning the outer surface of a rusted steel bar; then, the rust protection coatings prepared in the embodiments 1 to 5 are respectively and uniformly coated on the surface of the rusted steel bar body, two layers are coated, and the second layer is coated again after the first layer is naturally dried at room temperature, so that a continuous and stable rust protection coating is formed.
TABLE 1
| Detecting items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Soaking in 50 g/L sulfuric acid solution for 14 days | Foaming | Is not changed | Is not changed | Is not changed | Is not changed |
| Soaking in 50 g/L sodium hydroxide solution for 28 days | Rust formation | Is not changed | Is not changed | Is not changed | Is not changed |
| Soaking in 3.5% sodium chloride solution for 30 days | Rust formation | Is not changed | Is not changed | Is not changed | Is not changed |
Table 1 shows the results of the test after soaking the rusted steel sheets coated with the rust preventive coatings prepared in examples 1 to 5 in 50 g/L sodium hydroxide solution, 3.5% sodium chloride solution and 50 g/L sulfuric acid solution. As can be seen from table 1, when the weak acid type rust converting agent is not added, the rust layer is not converted, the bonding force between the coating and the rusted steel plate is weak, and a corrosive medium easily permeates through the coating, thereby causing corrosion to the steel plate, resulting in poor acid, alkali and salt resistance of the coating. After the weak acid type rust converting agent is added, the acid, alkali and salt resistance of the coating is obviously improved.
Fig. 1 and 2 are the polarization resistance and corrosion current density of the rusty protective coatings obtained in examples 1 to 5, respectively. As can be seen from fig. 1 and 2, the polarization resistance of the rusty protective coating is significantly increased and the corrosion current density is reduced after the addition of the weak acid type rust converting agent.
FIG. 3 is the adhesion of the rust preventive coatings obtained in examples 1 to 5. As can be seen from FIG. 3, before the addition of the weak acid type rust converting agent, the adhesion of the rust protection coating is low, namely 1.03 MPa, which is mainly due to the loose structure and many pores of the rust layer, so that the adsorption capacity of the polar group in the rust protection coating to the rusty steel plate is weak. After the weak acid type rust converting agent is added, the adhesive force of the coating shows a trend of firstly rising and then falling, which is mainly characterized in that the rust layer can be dissolved and converted into filler which is uniformly distributed in the rust protective coating by adding the weak acid type rust converting agent, so that the polar group in the rust protective coating can directly adsorb a metal matrix, thereby greatly improving the adhesive force of the rust protective coating. However, with the increase of the doping amount of the weak acid type rust converting agent, the crosslinking density of the acidic resin emulsion is greatly reduced, the crosslinking of the resin is influenced, the continuity of the coating film is reduced, and finally the adhesion of the rust protective coating is reduced.
The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (5)
1. A rusty protective coating with a rust conversion function is characterized by comprising the following raw materials: 60-90 parts of acid resin emulsion with solid content of 60% and 10-40 parts of rust transforming agent; 1-5 per mill of the total mass of the acidic resin emulsion and the rust converting agent, a wetting agent and 1-5 per mill of the total mass of the acidic resin emulsion and the rust converting agent; the parts are parts by mass;
the rust converting agent is prepared from the following raw materials in proportion: according to the mass portion, 1-5 portions of phosphoric acid, 1-5 portions of tannic acid, 5-10 portions of citric acid, 5-10 portions of benzoic acid, 5-15 portions of n-octanoic acid, 5-10 portions of ethanol, 5-10 portions of secondary alkyl sodium sulfonate, 5-15 portions of alcamines compounds and 10-20 portions of deionized water.
2. The rusty protective coating having a rust converting function according to claim 1, characterized in that:
80 parts of acid resin emulsion with solid content of 60% and 20 parts of rust transforming agent; 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent, a wetting agent and 1 per mill of the total mass of the acidic resin emulsion and the rust converting agent;
the rust converting agent is prepared from the following raw materials in proportion: the cleaning agent consists of 5 parts of phosphoric acid, 5 parts of tannic acid, 10 parts of citric acid, 10 parts of benzoic acid, 15 parts of n-octanoic acid, 10 parts of ethanol, 10 parts of sodium secondary alkyl sulfonate, 15 parts of alcohol amine compounds and 20 parts of deionized water;
wherein the phosphoric acid mass concentration is 30%, the tannic acid mass concentration is 50%, the citric acid mass concentration is 40%, the benzoic acid mass concentration is 50%, the n-caprylic acid mass concentration is 60%, and the ethanol mass concentration is 20%.
3. The rusty protective coating having a rust converting function according to claim 1 or 2, characterized in that: the mass concentration of the phosphoric acid is 20-30%; the mass concentration of the tannic acid is 50-60%; the mass concentration of the citric acid is 40-50%; the mass concentration of the benzoic acid is 40-50%; the mass concentration of the n-octanoic acid is 50-60%; the mass concentration of the ethanol is 20-60%.
4. The rusty protective coating having a rust converting function according to claim 1 or 2, characterized in that: the defoaming agent is a high-molecular organic silicon modified polymer, the thickening agent is a cross-linking high-molecular emulsion thickening agent, and the wetting agent is polyether siloxane copolymer.
5. A method for producing a rusty protective coating having a rust converting function according to claim 1, 2, 3 or 4, characterized by comprising the steps of:
1) dissolving tannic acid, phosphoric acid and citric acid in deionized water under the condition of water bath at 60 ℃ to form a component A; dissolving benzoic acid and n-caprylic acid in ethanol to form a component B;
2) uniformly stirring and mixing the component A and the component B, and adding metered secondary alkyl sodium sulfonate and alcohol amine compounds to form a weak acid rust converting agent;
3) and adding the rust conversion agent into the acidic resin emulsion, and adding paint auxiliaries such as a defoaming agent, a wetting agent, a thickening agent and the like to prepare the rust-bearing protective paint with the rust conversion function.
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| CN113308159A (en) * | 2021-06-11 | 2021-08-27 | 江苏凯乐迪新材料科技有限公司 | Water-based rusty antirust paint |
| CN115633691A (en) * | 2022-10-12 | 2023-01-24 | 大连国际旅行卫生保健中心(大连海关口岸门诊部) | Use of tannic acid as component of mosquito attractant |
| CN115633696A (en) * | 2022-10-12 | 2023-01-24 | 大连国际旅行卫生保健中心(大连海关口岸门诊部) | Use of tannic acid as an attractant component for Musca stabulans |
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| CN115633691B (en) * | 2022-10-12 | 2024-03-29 | 大连国际旅行卫生保健中心(大连海关口岸门诊部) | Use of tannins as mosquito attractant components |
| CN115633696B (en) * | 2022-10-12 | 2024-03-29 | 大连国际旅行卫生保健中心(大连海关口岸门诊部) | Use of tannins as attractant component for stable flies |
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