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Rust removal and antirust liquid and preparation method thereof

A technology of antirust liquid and solution, which is applied in the coating process of metal materials, etc., can solve the problems of easy formation of precipitation and difficult dissolution, etc., and achieve the effect of low cost, economical cost and high treatment efficiency

Active Publication Date: 2017-05-03
HUNAN JINYU CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent has the following disadvantages: the iron phosphate and manganese carbonate contained in the formula are not easy to dissolve completely in the feed liquid, especially the iron phosphate, which is easy to form precipitation

Method used

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Examples

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preparation example Construction

[0048] The preparation method of above embodiment is as follows:

[0049] (1) Fluorozirconic acid and water are miscible in the reactor;

[0050] (2 then add sodium dihydrogen phosphate in it, leave standstill for 1 hour;

[0051] (3 minutes repeatedly add reduced iron powder (7g / L) in solution and stir evenly, leave standstill 12 hours;

[0052] (4. After the impurities in the reduced iron powder are precipitated, add ethylene glycol, manganese nitrate and iron nitrate, then add octylphenol polyoxyethylene ether and disodium edetate, stir well, and let it stand for 24 hours stand-by.

[0053]Table 3 is the formulation of the comparative example, wherein the unit of each ingredient value is g / L, and the solution volume is 1L.

[0054] Table 3 comparative example formula

[0055] comparative example 1 2 3 4 5 6 Fluorozirconic acid 360 360 365 365 375 390 Sodium dihydrogen phosphate 100 100 95 95 85 95 Ferric nitrate 90 90 95 95...

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Abstract

The invention provides rust-removing and rust-preventing solution. The rust-removing and rust-preventing solution is characterized in that 1 L of the solution comprises the following raw material components in the following contents: 360-410 g / L of hexafluorozirconic acid, 80-100 g / L of sodium dihydrogen phosphate, 90-130 g / L of ferric nitrate, 1-5 g / L of ethylene glycol, 1-3 g / L of manganese nitrate, 3-5 g / L of octylphenol polyoxyethylene ether, 5-10 g / L of ethylene diamine tetraacetic acid and the balance of water. According to the rust-removing and rust-preventing solution, a unique decomposition transformation synthesis principle is adopted, so the oil removing, rust removing and rust preventing are performed in one step; the solution is directly used in a normal temperature state without heating and special equipment.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a rust-removing and anti-rust liquid and a preparation method thereof. Background technique [0002] Rust removal and anti-rust liquid is a high-performance product that not only removes rust, but also prevents rust. At present, there are one-step method and sub-step method for the anti-rust treatment of metal components. The one-step method has changed the cumbersome operation process of rust removal and rust prevention in the past. At room temperature, it only needs simple brushing, spraying or soaking to complete the degreasing, rust and rust removal simultaneously. [0003] Chinese patent CN1418920 discloses a kind of rust-removing anti-rust paint for metal and production method thereof, the formula of this anti-rust paint is: H 3 PO 4 36-41%; Acetic acid 8-10%; FePO 4 9-13%; glycerol 0.1-0.5%; manganese carbonate 0.1-0.2%; the balance is water. The pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/36C23G1/02
CPCC23C22/364C23G1/02
Inventor 桂成方
Owner HUNAN JINYU CHEM
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