Metal derusting and antirusting agent and preparation method thereof

A rust inhibitor, metal technology, applied in the direction of metal material coating process, etc., can solve the problems of unstable nature of ethylene oxide, endangering the health of operators, high toxicity of ethylene oxide, etc. Short time and less pollution

Active Publication Date: 2017-04-05
ANHUI WEILAI SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The degreasing and derusting agent is unfavorable for production operation because the ethylene oxide contained in the raw material is unstable, and ethylene oxide is highly toxic, endangering the health of operators and causing great environmental pollution.

Method used

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specific Embodiment approach

[0027] The specific embodiment In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] A kind of metal derusting antirust agent, by weight 100%, its raw material is:

[0029] Phosphoric acid: 10-40%;

[0030] Zinc oxide: 0.1 to 5%;

[0031] Aluminum hydroxide: 0.1 to 5%;

[0032] Sodium tripolyphosphate: 3 to 15%;

[0033] Surfactant: 1-15%;

[0034] Thickener: 0.1 to 3%;

[0035] Organic acid: 0 ~ 10%;

[0036] Deionized water: balance.

[0037] Preferably, the s...

Embodiment 1

[0040] Metal derusting antirust agent in the present embodiment, the weight percent of raw material used is:

[0041] Phosphoric acid: 18%;

[0042] Zinc oxide: 0.5%;

[0043] Aluminum hydroxide: 0.5%;

[0044] Sodium tripolyphosphate: 6%;

[0045] Fatty alcohol polyoxyethylene ether with a degree of polymerization of 9: 5%;

[0046] Carboxymethylcellulose: 0.5%;

[0047] Acetic acid: 3%;

[0048] Deionized water: 66.5%.

[0049] Preparation method: Weigh zinc oxide, aluminum hydroxide and phosphoric acid according to the formula dosage, heat, mix and stir until the solution is clear to prepare liquid A; weigh the formula dosage of fatty alcohol polyoxyethylene ether with a polymerization degree of 9, carboxymethyl fiber Sodium and water, heat and mix until completely dissolved to obtain liquid B; mix liquid A and liquid B, and add the amount of sodium tripolyphosphate and acetic acid in the formula under stirring until a uniform aqueous solution can be prepared. Finish...

Embodiment 2

[0051] Metal derusting antirust agent in the present embodiment, the weight percent of raw material used is:

[0052] Phosphoric acid: 25%;

[0053] Zinc oxide: 0.8%;

[0054] Aluminum hydroxide: 0.8%;

[0055] Sodium tripolyphosphate: 5%;

[0056] Octylphenol ethoxylate: 4%;

[0057] Carboxymethylcellulose: 0.4%;

[0058] Acetic acid: 1%;

[0059] Deionized water: 63%.

[0060] Preparation method: weigh zinc oxide, aluminum hydroxide and phosphoric acid according to the formula dosage, heat, mix and stir until the solution is clear, and prepare liquid A; weigh the formula dosage of octylphenol polyoxyethylene ether, carboxymethyl cellulose and water, Heat, mix and stir until completely dissolved to obtain liquid B; mix liquid A and liquid B, and add the prescribed amount of sodium tripolyphosphate and acetic acid under stirring until a uniform aqueous solution can be prepared. finished product.

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Abstract

The invention provides a metal derusting and antirusting agent as well as a preparation method and an application of the metal derusting and antirusting agent. The metal derusting and antirusting agent comprises phosphoric acid, zinc oxide, aluminium hydroxide, sodium tripolyphosphate, organic acid, a surfactant, a thickener and deionized water. The metal derusting and antirusting agent can be used for finishing derusting, passivating and phosphating for a metal surface via one-step treatment, is free from any strong acid and strong base, non-toxic, smokeless and non-smell-volatile, and is free from environment pollution; and the treated metal surface can be antirust for more than half a year and has a strong binding force with a paint layer. The metal derusting and antirusting agent is a derusting and antirusting product which is safe and reliable, less in pollution, simple in process and low in cost.

Description

technical field [0001] The invention relates to a metal surface treatment technology, in particular to a metal derusting and antirusting agent and a preparation method thereof. Background technique [0002] Steel products are easily corroded in the atmosphere, and the amount of steel lost due to corrosion is huge every year in the world. In order to solve the corrosion of steel products, it is often necessary to take various anti-corrosion measures on the steel surface. At present, the metal surface treatment fluids commonly used in industry mainly have the functions of rust removal, rust prevention, decontamination, phosphating, passivation, etc. The products have both single functions and multi-functional ones. However, in practical applications, either due to the high price of raw materials and high cost; or due to incomplete degreasing and rust removal, the corrosion resistance performance, especially the long-term corrosion resistance performance is poor; or the complex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/20C23G1/02
Inventor 童学宝
Owner ANHUI WEILAI SURFACE TECH
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