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Neutral oil removal rust remover and preparation method thereof

A rust remover and neutral technology, which is applied in the field of neutral degreasing and rust remover and its preparation, can solve the problems of metal mechanical properties decline, metal surface corrosion, hydrogen embrittlement and other problems, so as to improve cost performance, reduce pollution, Good degreasing effect

Active Publication Date: 2014-07-09
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This pickling rust removal method will cause serious corrosion to the metal surface, and is prone to hydrogen embrittlement, resulting in a decrease in the mechanical properties of the metal. At the same time, the pickling product will also cause environmental pollution, so it is greatly restricted.

Method used

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  • Neutral oil removal rust remover and preparation method thereof
  • Neutral oil removal rust remover and preparation method thereof
  • Neutral oil removal rust remover and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of neutral degreasing and rust removing agent of the present invention, this neutral degreasing and rust removing agent is formulated by the following components of mass fraction and the deionized water of balance:

[0046]

[0047]The above-mentioned physical dispersant is selected polyethylene glycol oleate for use.

[0048] The above-mentioned chemical chelating agent is selected from the compound of disodium EDTA, trisodium citrate and sodium pyrophosphate, and the mass fraction of the three components in the neutral degreasing and rust removing agent is all 3%.

[0049] The above-mentioned degreasing emulsifier is a compound mixture of nonionic surfactant and anionic surfactant. The non-ionic surfactant is a compound of nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether, and the mass fractions of the two in the neutral degreasing and rust removing agent are 2% and 1% respectively; The surfactant is a compound of sodium dodecylbenze...

Embodiment 2

[0065] A kind of neutral degreasing and rust removing agent of the present invention, this neutral degreasing and rust removing agent is formulated by the following components of mass fraction and the deionized water of balance:

[0066]

[0067]

[0068] The above-mentioned physical dispersant is selected polyethylene glycol oleate for use.

[0069] The above-mentioned chemical chelating agent is a combination of disodium EDTA, sodium pyrophosphate and glycolic acid, and the mass fractions of the three components in the neutral degreasing and rust removing agent are 4%, 2% and 2% respectively.

[0070] The above-mentioned degreasing emulsifier is a compound mixture of nonionic surfactant and anionic surfactant. The non-ionic surfactant is a compound of nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and coconut oil fatty acid diethanolamide, and the mass fractions of the three in the neutral degreasing and rust removing agent are respectively 1%,...

Embodiment 3

[0081] A kind of neutral degreasing and rust removing agent of the present invention, this neutral degreasing and rust removing agent is formulated by the following components of mass fraction and the deionized water of balance:

[0082]

[0083]

[0084] The above-mentioned physical dispersant is selected polyethylene glycol oleate for use.

[0085] The above-mentioned chemical chelating agent is a combination of disodium EDTA, trisodium citrate, tartaric acid, sodium pyrophosphate, and glycolic acid, and the mass fractions of these five ingredients in the neutral degreasing and rust removing agent are respectively 4 %, 2%, 2%, 1%, and 1%.

[0086] The above-mentioned degreasing emulsifier is a compound mixture of nonionic surfactant and anionic surfactant. The non-ionic surfactant is a compound of nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether, coconut oil fatty acid diethanolamide, fatty alcohol polyoxyethylene ether, and the four are in neutral...

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Abstract

The invention discloses a neutral oil removal rust remover, which is mainly prepared from deionized water and the following components by mass fraction: 4-8% of physical dispersing agent, 8-10% of chemical chelating agent, 4-6% of oil-removing emulsifier and 1-4% of corrosion inhibitor. The preparation method disclosed by the invention comprises the following steps: firstly, preparing the components according to the proportioning requirements; weighting the ingredients in the chemical chelating agent to put into a container; adding the deionized water to evenly agitate, so as to obtain a solution A; adding the physical dispersing agent and the corrosion inhibitor to the solution A; agitating to obtain a solution B; additionally, adding the prepared components of the oil-removing emulsifier to the container; adding the deionized water to dissolve; adding a functional additive to obtain a solution C; and evenly mixing the solution B with the solution C under the agitation condition to obtain the neutral oil removal rust remover. By adopting the product disclosed by the invention, the oil and rust removal work can be quickly and efficiently finished, and the neutral oil removal rust remover is free of damage to a substrate.

Description

technical field [0001] The invention belongs to the technical field of metal surface degreasing and derusting, and in particular relates to a neutral degreasing and derusting agent and a preparation method thereof. Background technique [0002] Degreasing and derusting are often used as metal surface cleaning or metal processing pre-treatment procedures, and degreasing and derusting agents have a very important cleaning and derusting effect. [0003] In order to achieve the purpose of degreasing and derusting, chemical or physical methods are traditionally used to degrease and derust the workpiece. Traditional degreasing and rust removal methods include alkaline degreasing and pickling processes. The alkaline degreasing method mostly uses strong alkaline substances such as sodium hydroxide, soda ash and sodium silicate to prepare a strong alkaline solution, and then mixes a small amount of surfactant to achieve the purpose of degreasing. This method of degreasing will caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/26
Inventor 涂川俊朱雨王勇军
Owner HUNAN UNIV
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