A boron sulfate rust remover

Abstract

The invention provides a boron sulfate rust remover. A preparation method comprises the following steps: (1) 50-100 parts of nonylphenol or nonylphenol polyoxyethylene ether is put into a reaction kettle AND heated to 100-150 DEG C, 1-15 parts of boric acid is slowly heated and reacting for 100-140 minutes after the addition of the boric acid; (2) the mixture is cooled to 60-100 DEG C after the reaction is finished, 2-12 parts of auxiliary agents is added, and the mixture is naturally cooled to normal temperature; (3) 1-5 parts of S2O3 or SO3 is slowly added under vacuum while stirring, and isheated to 50-90 DEG C after addition, and reacts for 100-180 minutes; and (4) the mixture is cooled to below 50 DEG C after the reaction is finished, and 2-10 parts of auxiliary agents are added, thereaction is carried out for 100-180 minutes, and then the mixture is naturally cooled to be less than 30 DEG C, so that products are obtained. The rust remover has rapid and thorough rust removal capability; and not only is the rust removal effect superior to that of a strong acid or nitrogen-phosphorus rust remover, but also the rust remover is green and environment-friendly, and has no toxic orside effect on a human body.

Description

technical field [0001] The invention relates to the technical field of rust removal, in particular to a borosulfate rust remover. Background technique [0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. Necessary economic loss. [0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: a large amount of hydrogen gas in the process The generation...

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Problems solved by technology

[0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. necessary economic loss

[0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: a large amount of hydrogen gas in the process The generation of hydrogen embrittlement will cause the steel to produce hydrogen embrittlement, which will cause the mechanical properties of the metal to decline and affect the strength of the steel itself; at the same time, it is easy to form acid mist, which will affect the health of the operator and corrode the surrounding equipment and environment; the consumption of acid is also large , increase the processing cost; this kind of acid will cause excessive corrosion of steel

In addition, the residues produced in large quantities need to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes the soil and the environment.

[0004] The second-generation rust remover is a chemical substance containing nitrogen and phosphorus. Although it can overcome the disadvantages of the first-generation rust remover, such as being harmful to the human body, producing acid mist, and corroding the substrate, it is easy to enter the water system and cause eutrophication.

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