CN109706459B - Polishing type boron sulfate derusting liquid - Google Patents
Polishing type boron sulfate derusting liquid Download PDFInfo
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- CN109706459B CN109706459B CN201910150709.2A CN201910150709A CN109706459B CN 109706459 B CN109706459 B CN 109706459B CN 201910150709 A CN201910150709 A CN 201910150709A CN 109706459 B CN109706459 B CN 109706459B
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Abstract
The application provides a polishing type boron sulfate derusting solution, which is formed by mixing the boron sulfate derusting solution with alumina particles and/or zinc oxide particles and water; wherein the mass of the alumina particles is 0.5-1% of the total mass of the system, and the mass of the water is 1-20% of the total mass of the system. The invention is a powerful rust remover, has quick and simple rust removing function to heavy rust, and has passivation function and anti-oxidation function; the rust removing effect is better than that of a strong acid or nitrogen and phosphorus rust remover, and the rust removing agent is green and environment-friendly and has no toxic or side effect on human bodies.
Description
Technical Field
The invention relates to the technical field of rust removal, in particular to a polishing type boric sulfate rust removal liquid.
Background
Ferrous metals, nonferrous metals and other materials are easy to rust outdoors or outdoors, which not only affects the appearance quality, but also affects the normal operation of processes such as paint spraying, bonding and the like, and if the materials are not treated in time, the materials are scrapped, thereby causing unnecessary economic loss.
The first generation of rust remover is strong acid, acid can react with iron rust and metal oxide to generate soluble salt, so as to achieve the purpose of rust removal, and the acid can react with base metal to release hydrogen while removing rust, and the hydrogen can generate pressure on the iron rust and indissolvable oxide skin, thus being beneficial to the peeling of the iron rust and the reduction of high-valence iron, and accelerating the pickling process, but the traditional acid solution treatment method also has obvious defects: namely, the generation of a large amount of hydrogen in the treatment process can cause the hydrogen embrittlement phenomenon of steel, cause the reduction of the mechanical property of metal and influence the strength of the steel; meanwhile, acid mist is easily formed, which affects the health of operators and corrodes surrounding equipment and environment; the consumption of acid liquor is also large, and the treatment cost is increased; such acids can cause over-corrosion of the steel. In addition, the large amount of generated residues need to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes soil and environment.
The second generation rust remover is a chemical substance containing nitrogen and phosphorus, and although the defects that the first generation rust remover is harmful to human bodies, generates acid mist, corrodes base materials and the like can be overcome, the second generation rust remover easily enters a water system to cause eutrophication. At present, the harm of the second generation rust remover to the environment is increasingly attracting attention. The development of a new generation of rust removal products is imminent.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a polishing type boron sulfate derusting solution. The invention is a powerful rust remover, has quick and simple rust removing function to heavy rust, and has passivation function and anti-oxidation function; the rust removing effect is better than that of a strong acid or nitrogen and phosphorus rust remover, and the rust removing agent is green and environment-friendly and has no toxic or side effect on human bodies.
The technical scheme of the invention is as follows:
a polishing type boron sulfate derusting solution is prepared by mixing and stirring the boron sulfate derusting solution, an abrasive and water uniformly; wherein the mass of the abrasive is 0.5-1% of the total mass of the system, and the mass of the water is 1-20% of the total mass of the system;
the preparation method of the boric sulfate derusting liquid comprises the following steps:
(1) putting 55-95 parts of nonylphenol or nonylphenol polyoxyethylene ether into a reaction kettle, heating to 105-145 ℃, slowly adding 2-13 parts of boric acid, and reacting for 110-135 minutes after the addition is finished;
(2) after the reaction is finished, cooling to 65-95 ℃, adding 3-11 parts of an auxiliary agent, and naturally cooling to normal temperature;
(3) slowly adding 1.5-4.5 parts of S under vacuum2O3Or SO3Stirring while adding, heating to 55-95 ℃ after adding, and reacting for 120-150 minutes;
(4) and after the reaction is finished, cooling to below 50 ℃, adding 2.5-9 parts of an auxiliary agent, reacting for 110-180 minutes, and then naturally cooling to below 30 ℃ to obtain the product.
Preferably, the abrasive is aluminum oxide particles and/or zinc oxide particles, and the particle size of the abrasive is 0.3-3 microns.
Preferably, the nonylphenol polyoxyethylene ether is at least one selected from the group consisting of NP-4, NP-7, NP-10, NP-15, and NP-20.
Preferably, the adjuvant is at least one selected from the group consisting of propylene glycol, glycerol, diglycerol, sorbitol, epoxidized soybean oil, pentaerythritol, xylitol, and mannitol.
The purity of each raw material is more than 99%.
The beneficial technical effects of the invention are as follows:
the boron sulfate derusting liquid has strong derusting function, and aluminum oxide Al is used2O3And/or after the zinc oxide ZnO particles are mixed with the boric sulfate derusting liquid, the brightness of the surface of the base material after derusting is greatly improved. When rust removal is carried out, water with the mass accounting for 1-20% of the total mass of the system is added according to the degree of rust removal, the rust remover with the required concentration is smeared or sprayed on the base material, and a polishing machine or other equipment which is provided with soft friction materials such as felts and the like and can rotate to rub or slide to rub the surface of the base material is adopted to polish for 30 s-5 min, so that the bright surface of the base material can be obtained, namely the surface of the new base material is bright. The brightness of the surface of the stainless steel treated by the method can reach 8-12K.
In the process of rust removal, the invention also has the function of passivating the surface of the base material, forms a very thin and firm passivation film and further can prevent oxidation. The invention is non-toxic and harmless, has no acid mist and corrosiveness, and can be manually operated by workers. The rust removing time is short, the surface is not left, the base material is not corroded, and the method is suitable for rust removing occasions requiring green environmental protection and no pollution.
Drawings
FIG. 1 is a schematic diagram of derusting by using an 8k polishing machine in the embodiment.
FIG. 2 is a surface topography of stainless steel after rust removal by a rust remover in example 2.
Detailed Description
The present invention will be described in detail with reference to examples. The purity of each raw material used in the examples was 99% or more.
Example 1
1. Firstly, preparing a boric sulfate derusting solution, which comprises the following steps:
(1) putting 55 parts of nonyl phenol into a reaction kettle, heating to 105 ℃, then slowly adding 2 parts of boric acid, and reacting for 135 minutes after the addition is finished;
(2) after the reaction is finished, cooling to 66 ℃, adding 3 parts of auxiliary agent glycerol, and naturally cooling to normal temperature;
(3) slowly add 1.5 parts S under vacuum2O3Stirring while adding, heating to 55 ℃ after adding, and reacting for 150 minutes;
(4) after the reaction is finished, cooling to below 50 ℃, adding 2.5 parts of auxiliary agent glycerol, reacting for 110 minutes, and then naturally cooling to below 30 ℃ to obtain the product.
2. Mixing the prepared borosulfate derusting solution with alumina particles with the particle size of 0.3 micron and water, and uniformly stirring; wherein the mass of the alumina particles is 0.5 percent of the total mass of the system, and the mass of the water is 20 percent of the total mass of the system, so as to obtain the rust remover.
3. Taking a lightly rusted 316 type stainless steel plate, wherein the thickness of rust is 0.2-0.3 mm. Spraying a layer of the rust remover prepared in the step 2 on the plate by using a spray gun, placing the plate on an 8K polishing machine, and polishing the plate for 30s by using a felt grinding head of the plate, as shown in figure 1; and then the stainless steel is washed clean by clean water, so that the surface of the stainless steel is smooth and clean, and the surface of the stainless steel has no damage marks such as cracks, spots, pits and the like.
Example 2
1. Firstly, preparing a boric sulfate derusting solution, which comprises the following steps:
(1) 70 parts of nonylphenol polyoxyethylene ether NP-10 are put into a reaction kettle, heated to 130 ℃, and then 6 parts of boric acid are slowly added to react for 120 minutes after the addition is finished;
(2) after the reaction is finished, cooling to 75 ℃, adding 5 parts of auxiliary sorbitol, and naturally cooling to normal temperature;
(3) slowly add 3 parts SO under vacuum3Stirring while adding, heating to 80 ℃ after adding, and reacting for 125 minutes;
(4) after the reaction is finished, cooling to below 50 ℃, adding 5 parts of auxiliary agent epoxidized soybean oil, reacting for 130 minutes, and then naturally cooling to below 30 ℃ to obtain the epoxy soybean oil.
2. Mixing the prepared borosulfate derusting solution with alumina particles with the particle size of 1 micron and water, and uniformly stirring; wherein the mass of the alumina particles is 0.8 percent of the total mass of the system, and the mass of the water is 10 percent of the total mass of the system, so as to obtain the rust remover.
3. A heavily rusted 304 type stainless steel base material is taken, and the thickness of rusts is 0.8-1 mm. Spraying a layer of the rust remover prepared in the step 2 on the plate by using a spray gun, placing the plate on an 8K polishing machine, and polishing for 2min by using a felt grinding head of the plate, as shown in figure 1; then the stainless steel surface is washed clean by clean water, as shown in figure 2, the surface of the base material can be seen to be smooth and clean, the light can be reflected clearly, and the brightness can reach 8K (in the figure, most of the surface of the base material is covered by the opaque film, because the surface of the reflecting mirror can not be photographed, and the light reflection condition can be displayed only by covering a part of the reflecting mirror for comparison).
Example 3
1. Firstly, preparing a boric sulfate derusting solution, which comprises the following steps:
(1) adding 95 parts of nonylphenol polyoxyethylene ether NP-20 into a reaction kettle, heating to 145 ℃, slowly adding 13 parts of boric acid, and reacting for 110 minutes after the addition is finished;
(2) after the reaction is finished, cooling to 95 ℃, adding 11 parts of auxiliary propylene glycol, and naturally cooling to normal temperature;
(3) 4.5 parts of S are added slowly under vacuum2O3Stirring while adding, heating to 95 ℃ after adding, and reacting for 150 minutes;
(4) after the reaction is finished, cooling to below 50 ℃, adding 9 parts of auxiliary mannitol, reacting for 180 minutes, and then naturally cooling to below 30 ℃ to obtain the product.
2. Mixing the prepared borosulfate derusting solution with zinc oxide particles with the particle size of 3 microns and water, and uniformly stirring; wherein the mass of the alumina particles is 1 percent of the total mass of the system, and the mass of the water is 1 percent of the total mass of the system, so as to obtain the rust remover.
3. Taking three cast iron base materials of which the surfaces are completely covered with oxide skins, wherein the thickness of the oxide skins is 1-1.2 mm. . Coating a layer of the rust remover prepared in the step 2 on a plate by using a brush, placing the plate on an 8K polishing machine, and polishing the plate for 30s by using a felt grinding head of the plate, wherein the layer of the rust remover is shown in figure 1; and then the stainless steel is washed clean by clean water, so that the surface of the stainless steel is smooth and clean, and the surface of the stainless steel has no damage marks such as cracks, spots, pits and the like.
Claims (5)
1. A polishing type boron sulfate derusting liquid is characterized in that the boron sulfate derusting liquid is formed by mixing an abrasive and water; wherein the mass of the abrasive is 0.5-1% of the total mass of the system, and the mass of the water is 1-20% of the total mass of the system;
the preparation method of the boric sulfate derusting liquid comprises the following steps:
(1) putting 55-95 parts of nonylphenol or nonylphenol polyoxyethylene ether into a reaction kettle, heating to 105-145 ℃, slowly adding 2-13 parts of boric acid, and reacting for 110-135 minutes after the addition is finished;
(2) after the reaction is finished, cooling to 65-95 ℃, adding 3-11 parts of an auxiliary agent, and naturally cooling to normal temperature;
(3) slowly adding 1.5-4.5 parts of S2O3 or SO3 under vacuum, stirring while adding, heating to 55-95 ℃ after adding, and reacting for 120-150 minutes;
(4) and after the reaction is finished, cooling to below 50 ℃, adding 2.5-9 parts of an auxiliary agent, reacting for 110-180 minutes, and then naturally cooling to below 30 ℃ to obtain the product.
2. The boron sulfate derusting solution according to claim 1, wherein the abrasive is alumina particles and/or zinc oxide particles, and the particle size of the abrasive is 0.3-3 μm.
3. The liquid as claimed in claim 1, wherein the nonylphenol polyoxyethylene ether is at least one member selected from the group consisting of NP-4, NP-7, NP-10, NP-15, and NP-20.
4. The liquid as claimed in claim 1, wherein the adjuvant is at least one selected from the group consisting of propylene glycol, glycerin, diglycerin, sorbitol, epoxidized soybean oil, pentaerythritol, xylitol, and mannitol.
5. The borosulfate rust removing liquid as claimed in claim 1, wherein the purity of each raw material is 99% or more.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910150709.2A CN109706459B (en) | 2019-02-28 | 2019-02-28 | Polishing type boron sulfate derusting liquid |
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| CN114892174A (en) * | 2022-05-20 | 2022-08-12 | 镇江纳润特高新科技发展有限公司 | Ferrous metal polishing solution with rust removal function and preparation method thereof |
| CN114717561A (en) * | 2022-05-20 | 2022-07-08 | 镇江纳润特高新科技发展有限公司 | Black metal polishing solution containing phosphorus borate and preparation method thereof |
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Effective date of registration: 20230104 Address after: 212132 Floor 1, Building 6, Venous Industrial Park, No. 180, Jingang Avenue, New District, Zhenjiang City, Jiangsu Province Patentee after: Zhenjiang Naruto high tech Development Co.,Ltd. Patentee after: NANOLUBTECH (WUXI) SCI&TECH CO.,LTD. Address before: No.26, Huchuang Road, Hushuguan Town, Suzhou City, Jiangsu Province Patentee before: SUZHOU NAFULINKE METAL SURFACE TECHNOLOGY Co.,Ltd. Patentee before: NANOLUBTECH (WUXI) SCI&TECH CO.,LTD. |