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Rust remover and preparation method and application thereof

A technology of rust remover and antacid, which is applied in the coating process of metal materials, etc., can solve the problems of resource and energy waste, economic loss, etc., and achieve mild conditions of rust remover, enhanced safety, and fast rust removal time Effect

Pending Publication Date: 2022-06-03
苏州工业园区科瑞达新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In today's life, a large number of metals corrode and rust every year, resulting in a waste of resources and energy, which in turn causes huge economic losses

Method used

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  • Rust remover and preparation method and application thereof
  • Rust remover and preparation method and application thereof
  • Rust remover and preparation method and application thereof

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preparation example Construction

[0036] Another aspect of the embodiments of the present invention also provides a method for preparing the aforementioned rust remover, which comprises: mixing organic acid and / or organic acid salt, phosphoric acid, antacid, molybdate and water, and mixing them at room temperature or appropriate After heating, the mixture is stirred for 0.5 to 4 hours, and then a chelating agent, a cosolvent, and a surfactant are added in sequence to mix and stir to obtain a rust remover.

[0037] In some more specific embodiments, the preparation method of the rust remover comprises: first, adding organic acid and its salt, antacid, molybdate and phosphoric acid to pure water at room temperature, stirring for 0.5-2 h, After fully dissolving, add chelating agent, stir for 0.5-1h, add cosolvent, stir for 0.5-1h, finally add surfactant, stir rapidly for 1-2h to obtain rust remover.

[0038] Another aspect of the embodiments of the present invention also provides the use of the aforementioned rus...

Embodiment 1

[0042] In this embodiment, the rust remover includes the following components calculated in parts by weight: 200 parts of citric acid, 10 parts of phosphoric acid, 3 parts of sodium polyacrylate, 0.8 parts of potassium bromide, 1.5 parts of sodium molybdate, methyl perfluorobutyl acetate 4.5 parts of esters, 100 parts of polyvinylpyrrolidone, and the others are deionized water, totaling 1000 parts; wherein the preparation method of the rust remover is as follows:

[0043] (1) according to the parts by weight, first add deionized water in the reactor, start stirring, control the rotating speed not too fast, the rotating speed is 50-80rpm, add citric acid, phosphoric acid, potassium bromide, sodium molybdate successively, be warming up to 50°C to dissolve the solid completely;

[0044] (2) Cool down to 40°C, adjust the rotation speed to 100rpm, add sodium polyacrylate, stir for 40min, then add polyvinylpyrrolidone, stir for 1h;

[0045](3) The rotating speed is adjusted to 120r...

Embodiment 2

[0047] In this embodiment, the rust remover includes the following components calculated in parts by weight: 150 parts of citric acid, 130 parts of sodium citrate, 10 parts of phosphoric acid, 3 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of sodium molybdate, 3.5 parts of methyl perfluorohexyl acetate, 100 parts of N-methylpyrrolidone, and the others are deionized water, totaling 1000 parts; wherein the preparation method of the rust remover is as follows:

[0048] (1) according to the parts by weight, first add deionized water in the reactor, start stirring, control the rotating speed not too fast, the rotating speed is 50-80rpm, add citric acid, sodium citrate, phosphoric acid, potassium bromide, molybdic acid successively Sodium, heat up to 50°C to dissolve the solid completely;

[0049] (2) Cool down to 40°C, adjust the rotation speed to 100rpm, add ammonium polyacrylate, stir for 40min, then add N-methylpyrrolidone, stir for 1h;

[0050] (3) Th...

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Abstract

The invention discloses a rust remover and a preparation method and application thereof. The rust remover comprises the following components in parts by weight: 100-300 parts of organic acid and / or organic acid salt, 5-20 parts of phosphoric acid, 3-10 parts of chelating agent, 0.5-2 parts of acid making agent, 1-3 parts of molybdate, 2-5 parts of interfacial agent, 80-200 parts of cosolvent and the balance of water. The rust remover is free of strong acid and fluoride salt, the safety of the rust remover is enhanced, low-toxicity, environment-friendly and efficient perfluoroalkyl acetate is introduced for the first time, and the perfluoroalkyl acetate has ultrahigh surface activity and certain lubricity, so that the prepared rust remover is short in rust removal time and obvious in rust removal effect, and the rust remover is suitable for industrial production. And meanwhile, a good anti-rust effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of rust removal, and in particular relates to a rust remover and a preparation method and application thereof. Background technique [0002] Corrosion has always been a major problem that plagues human production and life. In the process of industrial production and social development, the most exposed metal is iron substrate, and metal iron is also one of the most easily rusted metals. In today's life, a large number of metals corrode and rust every year, resulting in waste of resources and energy, resulting in huge economic losses. [0003] Metal rust remover is the most direct and convenient method. Research on this aspect has been done for a long time. There are various rust removers on the market. There are very few rust removers that have obvious and fast real effects. Among them, especially It is the easiest way to disassemble the rusted screws on the flange in chemical production, especially need a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08C23G1/24C23C22/40C23C22/68
CPCC23G1/088C23G1/24C23C22/40C23C22/68
Inventor 薛峰陈敏
Owner 苏州工业园区科瑞达新材料技术有限公司
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