CN111593336A - Water-based antirust and flash rust-proof agent and preparation method thereof - Google Patents
Water-based antirust and flash rust-proof agent and preparation method thereof Download PDFInfo
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- CN111593336A CN111593336A CN202010470573.6A CN202010470573A CN111593336A CN 111593336 A CN111593336 A CN 111593336A CN 202010470573 A CN202010470573 A CN 202010470573A CN 111593336 A CN111593336 A CN 111593336A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
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Abstract
The invention discloses a water-based rust-proof flash rust inhibitor and a preparation method thereof. The product is a compound aqueous rust-proof and flash rust-proof agent consisting of sodium benzoate, benzotriazole, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate, sodium hydroxide and water. The preparation method of the rust-proof and flash rust-proof agent comprises the steps of weighing the components of the formula, mixing the components step by step, and stirring the components uniformly. The product prepared by the invention has good rust prevention and flash rust prevention effects, simple production process, easily purchased raw materials, small usage amount and obvious price advantage.
Description
Technical Field
The invention relates to the field of chemical synthesis and anticorrosive coatings, in particular to a water-based antirust and flash rust-proof agent and a preparation method thereof, which are mainly used for rust prevention and flash rust prevention of nonferrous metals.
Background
The corrosion of metal materials not only causes the waste of resources and energy, but also sometimes threatens the life and property safety of people. In order to prevent corrosion of the metal material, the surface of the base body of the metal material may be treated to enhance the corrosion resistance of the surface of the material. Usually, a layer of rust inhibitor is coated on the surface of the metal material to isolate the metal from the corrosive medium, so as to prevent the metal from directly contacting with the metal surface and protect the metal.
The common antirust agents mainly comprise two types of antirust oil and aqueous antirust agents, and the aqueous antirust agents can save an oil removing process and reduce the actual operation cost. However, the early water-based anti-attraction agent contains more toxic substances such as chromium, nitrite, phosphate and the like, and although the anti-rust agent has low cost and good corrosion resistance, the anti-rust agent has great pollution to the environment. The rust inhibitor used in the domestic market at present mainly comprises: sodium nitrites, ethanolamines, acetylenic diols, and the like. Sodium nitrite is a carcinogenic substance, has an antirust effect only on iron metal, and has a poor antirust effect when the pH value is lower than 7.0. Ethanolamines, such as: dimethylethanolamine has pungent odor, generates volatile organic compounds in the preparation process, and has a certain antirust effect, but the water resistance of the coating is poor. The acetylene glycol has high price, large addition amount, and has an antirust effect only on iron metal, and the effect is poor.
Disclosure of Invention
Therefore, in order to solve the problems of single property, poor effect, high price and the like of the antirust agent used in the current market, the invention provides the composite auxiliary agent which has the functions of rust prevention and flash rust prevention on nonferrous metals such as copper, iron, cast iron, aluminum, soldering tin and the like, and the composite auxiliary agent has the advantages of simple production process, easily purchased raw materials, small usage amount and obvious price advantage and provides the preparation method thereof.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a water-based antirust and flash rust-preventing agent is a compound auxiliary agent consisting of sodium benzoate, benzotriazole, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide. When the antirust agent is used, the antirust agent is brushed on the surface of metal, a passivation layer can be quickly formed, so that the metal is isolated from oxygen and other oxidizing and corrosive substances, and the antirust and flash rust-proof effects are achieved.
Further, the water-based antirust and flash rust inhibitor comprises the following raw materials in parts by weight: 3-6 parts of sodium benzoate, 1-2 parts of benzotriazole, 2-4 parts of trisodium phosphate, 2-4 parts of sodium hexametaphosphate, 2-4 parts of sodium tetraborate, 2-4 parts of sodium hydroxide and 500 parts of water.
Further, the water-based antirust and flash rust inhibitor comprises the following raw materials in parts by weight: 4-5 parts of sodium benzoate, 1-2 parts of benzotriazole, 3-4 parts of trisodium phosphate, 2-3 parts of sodium hexametaphosphate, 2-3 parts of sodium tetraborate, 2-3 parts of sodium hydroxide and 500 parts of water.
Further, the preparation method of the aqueous rust-proof and flash rust-proof agent comprises the following steps:
(1) weighing benzotriazole according to the parts, dispersing into methanol or ethanol with the same mass, and dissolving for later use;
(2) weighing sodium benzoate, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide according to parts, and sequentially adding into water to be uniformly dispersed; stirring at 1000r/min for 1 h;
(3) and (3) mixing and stirring the standby liquid obtained in the step (1) and the liquid obtained in the step (2) at normal temperature to obtain a water-based antirust and flash rust inhibitor product.
Compared with the prior art, the aqueous rust-proof and flash rust-proof agent has the following advantages: good rust prevention and flash rust prevention effects, simple production process, easily purchased raw materials, small usage amount and obvious price advantage.
(1) The water-based rust-proof and flash rust-proof agent has good rust-proof and flash rust-proof effects. Cast iron which is most prone to rust can not flash rust and return rust within 240 hours under the test conditions of 90 ℃ and 85% of humidity, and the time for rusting of other antirust products in the market is not more than 24 hours under the same conditions.
(2) The water-based antirust and anti-flash rust agent has the advantages of easily available raw materials, small usage amount and obvious price advantage. The protection cost of the invention for metal amounts to about 140 yuan/ton. Other rust inhibitors commonly found on the market, such as: import 179, total protection costs for metals of about 800 yuan/ton; dimethylethanolamine rust inhibitors, which add up to a total of 360 yuan per ton to the metal protection cost; the composite antirust agent on the market has the total protection cost of about 800 yuan/ton for metals.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings of other documents used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts. In the drawings:
FIG. 1 shows the effect of a salt spray test on a cast iron piece protected with a sodium nitrite type rust inhibitor for 300 hours;
FIG. 2 shows the effect of a salt spray test on a cast iron sheet protected with an amine rust inhibitor for 300 hours;
FIG. 3 shows the effect of a salt spray test for 300 hours on cast iron pieces protected with a composite flash rust inhibitor;
FIG. 4 is a graph of the effect of an aluminum sheet protected with the rust inhibitor of example 1.1 after a salt spray test for 300 hours;
FIG. 5 is a graph of the effect of a salt spray test for 300 hours on copper sheets protected with the rust inhibitor of example 1.2;
FIG. 6 is a graph of the effect of a salt spray test on 300 hours on cast iron pieces protected with the rust inhibitor of example 1.3;
FIG. 7 is a graph showing the effect of the use of the rust inhibitor of example 1.4 in a salt spray test for 300 hours on a cast iron piece.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Moreover, any elements in the figures are meant to be exemplary rather than limiting, and any nomenclature is used merely for distinction and not in any limiting sense.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Through the arrangement of the overall design idea, the obtained water-based antirust and anti-flash rust agent is simple in production process, easy to purchase raw materials, small in usage amount and obvious in price advantage, and finally achieves the purpose of having antirust and anti-flash rust effects on nonferrous metals such as copper, iron, cast iron, aluminum and soldering tin.
Example 1.1
The raw material ratio of the embodiment is as follows: 3kg of sodium benzoate, 1 kg of benzotriazole, 2kg of trisodium phosphate, 3kg of sodium hexametaphosphate, 3kg of sodium tetraborate, 2kg of sodium hydroxide and 500 kg of water.
(1) Weighing 1 kg of benzotriazole, dispersing into 1 kg of methanol, and dissolving for later use;
(2) weighing sodium benzoate, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide according to parts, and sequentially adding into water to be uniformly dispersed; stirring at 1000r/min for 1 h;
(3) and (3) mixing and stirring the standby liquid obtained in the step (1) and the liquid obtained in the step (2) at normal temperature to obtain a water-based antirust and flash rust inhibitor product.
The experiment effect of the aluminum sheet protected by the antirust agent coated on the aluminum sheet in the salt spray box is shown in figure 4, and the aluminum sheet is still bright and rustless after the salt spray experiment for 300 hours. Therefore, the water-based rust-proof and flash rust-proof agent prepared by the method and the proportion has better rust-proof and flash rust-proof effects.
Example 1.2
The raw material ratio of the embodiment is as follows: 6 kg of sodium benzoate, 2kg of benzotriazole, 4kg of trisodium phosphate, 4kg of sodium hexametaphosphate, 3kg of sodium tetraborate, 3kg of sodium hydroxide and 500 kg of water.
(1) Weighing 2kg of benzotriazole, dispersing into 2kg of methanol, and dissolving for later use;
(2) weighing sodium benzoate, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide according to parts, and sequentially adding into water to be uniformly dispersed; stirring at 1000r/min for 1 h;
(3) and (3) mixing and stirring the standby liquid obtained in the step (1) and the liquid obtained in the step (2) at normal temperature to obtain a water-based antirust and flash rust inhibitor product.
The prepared antirust agent is coated on a copper sheet, the experimental effect of the copper sheet protected by the antirust agent in a salt spray box is shown in figure 5, and the copper sheet is bright and rustless after a salt spray experiment for 300 hours. Therefore, the water-based rust-proof and flash rust-proof agent prepared by the method and the proportion has better rust-proof and flash rust-proof effects.
Example 1.3
The raw material ratio of the embodiment is as follows: 4kg of sodium benzoate, 1 kg of benzotriazole, 3kg of trisodium phosphate, 2kg of sodium hexametaphosphate, 2kg of sodium tetraborate, 2kg of sodium hydroxide and 500 kg of water.
(1) Weighing 1 kg of benzotriazole, dispersing into 1 kg of ethanol, and dissolving for later use;
(2) weighing sodium benzoate, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide according to parts, and sequentially adding into water to be uniformly dispersed; stirring at 1000r/min for 1 h;
(3) and (3) mixing and stirring the standby liquid obtained in the step (1) and the liquid obtained in the step (2) at normal temperature to obtain a water-based antirust and flash rust inhibitor product.
The test effect of the protective cast iron sheet on the salt spray box is shown in fig. 6 when the prepared antirust agent is coated on the cast iron sheet, and the cast iron sheet is still bright and rustless after the salt spray test for 300 hours. Compared with the effect of the cast iron sheet protected by the existing antirust agent shown in the figures 1, 2 and 3 in a salt spray experiment for 300 hours, the cast iron sheet has obvious advantages. Therefore, the water-based rust-proof and flash rust-proof agent prepared by the method and the proportion has better rust-proof and flash rust-proof effects.
Example 1.4
The raw material ratio of the embodiment is as follows: 5 kg of sodium benzoate, 2kg of benzotriazole, 4kg of trisodium phosphate, 3kg of sodium hexametaphosphate, 3kg of sodium tetraborate, 3kg of sodium hydroxide and 500 kg of water.
(1) Weighing 2kg of benzotriazole, dispersing into 2kg of ethanol, and dissolving for later use;
(2) weighing sodium benzoate, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide according to parts, and sequentially adding into water to be uniformly dispersed; stirring at 1000r/min for 1 h;
(3) and (3) mixing and stirring the standby liquid obtained in the step (1) and the liquid obtained in the step (2) at normal temperature to obtain a water-based antirust and flash rust inhibitor product.
The test effect of the protective cast iron sheet on the salt spray box is shown in figure 7 when the prepared antirust agent is coated on the cast iron sheet, and the cast iron sheet is still bright and has no rust after the salt spray test for 300 hours. Compared with the effect of the cast iron sheet protected by the existing antirust agent shown in the figures 1, 2 and 3 in a salt spray experiment for 300 hours, the cast iron sheet has obvious advantages. Therefore, the water-based rust-proof and flash rust-proof agent prepared by the method and the proportion has better rust-proof and flash rust-proof effects.
In conclusion, the aqueous rust-proof and flash rust-proof agent prepared by the method has rust-proof and flash rust-proof effects on nonferrous metals such as copper, iron, cast iron, aluminum, soldering tin and the like, and has more excellent rust-proof and flash rust-proof effects compared with other rust-proof products in the market under the same condition.
Claims (5)
1. An aqueous rust-proof and flash rust-proof agent is characterized in that: comprises sodium benzoate, benzotriazole, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide.
2. The aqueous rust-preventive and flash rust-preventive agent according to claim 1, characterized in that: comprises 3-6 parts of sodium benzoate, 1-2 parts of benzotriazole, 2-4 parts of trisodium phosphate, 2-4 parts of sodium hexametaphosphate, 2-4 parts of sodium tetraborate and 2-4 parts of sodium hydroxide.
3. The aqueous rust-preventive and flash rust-preventive agent according to claim 1, characterized in that: comprises 4-5 parts of sodium benzoate, 1-2 parts of benzotriazole, 3-4 parts of trisodium phosphate, 2-3 parts of sodium hexametaphosphate, 2-3 parts of sodium tetraborate and 2-3 parts of sodium hydroxide.
4. The preparation method of the water-based rust-proof and flash rust-proof agent is characterized by comprising the following steps:
s1 benzotriazole is weighed according to the requirements of claim 2 or 3 and is dispersed into methanol or ethanol with the same mass for standby after dissolution;
s2 weighing sodium benzoate, trisodium phosphate, sodium hexametaphosphate, sodium tetraborate and sodium hydroxide according to the requirements of claim 2 or 3, and adding into water in sequence to disperse uniformly;
s3, mixing the standby liquid obtained in the step S1 and the liquid obtained in the step S2 at normal temperature, and stirring to obtain the water-based antirust and flash rust inhibitor product.
5. The preparation method of the water-based antirust and flash rust inhibitor is characterized in that the stirring speed in the step S2 is 1000r/min, and the stirring time is 1 h.
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| CN202010470573.6A CN111593336A (en) | 2020-06-22 | 2020-06-22 | Water-based antirust and flash rust-proof agent and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115521646A (en) * | 2022-08-12 | 2022-12-27 | 河北铂润工贸科技有限公司 | Water-resistant and impact-resistant high-temperature-resistant inorganic coating and preparation method thereof |
| CN115772359A (en) * | 2022-12-30 | 2023-03-10 | 马鞍山采石矶涂料有限公司 | Quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for axle and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219433A (en) * | 1977-09-20 | 1980-08-26 | Otsuka Chemical Co., Ltd. | Metal corrosion inhibitor |
| CN103710710A (en) * | 2013-12-20 | 2014-04-09 | 西南大学 | Water-soluble environment-friendly anti-rusting agent, and preparation method and application thereof |
| CN109183041A (en) * | 2018-09-20 | 2019-01-11 | 青岛亚东精细化学品有限公司 | A kind of long-acting water-based antirust agent and preparation method thereof |
-
2020
- 2020-06-22 CN CN202010470573.6A patent/CN111593336A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219433A (en) * | 1977-09-20 | 1980-08-26 | Otsuka Chemical Co., Ltd. | Metal corrosion inhibitor |
| CN103710710A (en) * | 2013-12-20 | 2014-04-09 | 西南大学 | Water-soluble environment-friendly anti-rusting agent, and preparation method and application thereof |
| CN109183041A (en) * | 2018-09-20 | 2019-01-11 | 青岛亚东精细化学品有限公司 | A kind of long-acting water-based antirust agent and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115521646A (en) * | 2022-08-12 | 2022-12-27 | 河北铂润工贸科技有限公司 | Water-resistant and impact-resistant high-temperature-resistant inorganic coating and preparation method thereof |
| CN115772359A (en) * | 2022-12-30 | 2023-03-10 | 马鞍山采石矶涂料有限公司 | Quick-drying high-hardness water-based epoxy modified alkyd primer-topcoat paint special for axle and preparation method thereof |
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Application publication date: 20200828 |
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