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Phosphate-free metal cleaner and preparation method and application thereof

A technology of metal cleaning agent and phosphorus auxiliary agent, applied in the field of cleaning agents, can solve the problems of toxic and harmful organisms, single cleaning objects, ecological environment pollution, etc., and achieve the effects of strong rust resistance, simple process and no pollution to the ecological environment.

Active Publication Date: 2010-01-27
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the metal surface cleaners commonly used in China have a single function and a single cleaning object (only non-ferrous metals or ferrous metals can be cleaned)
Most of the metal cleaning agent formulations still contain phosphates that pollute the environment and potential carcinogenic nitrites. At the same time, the formulations also contain branched chain alkylbenzenesulfonic acid, a surfactant that is not biodegradable. Sodium and alkylphenol polyvinyl chloride ether substances, and alkylphenol polyoxyethylene ethers have "female effect" and distortion effects. Therefore, the currently commonly used cleaning agents are toxic and harmful to organisms (including the human body) during use. Pollution to the ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of anionic surfactant II: 2Kg monoethanolamine and 2Kg diethanolamine are put in the reactor, add 1Kg coconut oil acid (the addition speed of liquid fatty acid is 10L / min) and 0.1Kg deionized water, then heat to After stirring at 40° C. for 10 hours at a stirring speed of 40 rpm, the anionic surfactant II was obtained.

[0030] (2) Preparation of phosphorus-free metal cleaning agent: add 20 mass parts potassium octadecenoate soap and 25 mass parts coconut oleic acid diethanolamide in the anionic surfactant II prepared in 5 mass parts step (1), mix evenly, Obtain liquid A; mix 1 mass part potassium hydroxide, 2 mass parts EDTA and 35 mass parts deionized water to obtain liquid B; mix liquid A and liquid B, and stir at 40°C at 40rpm for 20 hours to obtain the obtained Phosphate-free metal cleaner.

[0031] Dilute the prepared phosphorus-free metal cleaning agent with deionized water to a solution with a mass fraction of 3%, and clean the metal processing ...

Embodiment 2

[0033] (1) Preparation of anionic surfactant II: 3Kg monoethanolamine and 3Kg diethanolamine are put in the reactor, add 1Kg oleic acid (the addition speed of liquid fatty acid is 10L / min) and 0.3Kg deionized water, then heat to 120 °C and stirred at a stirring speed of 100 rpm for 4 hours to obtain anionic surfactant II.

[0034] (2) Preparation of phosphorus-free metal cleaning agent: add 23 parts by mass of Swire oil and 29 parts by mass of C 14 Fatty alcohol polyoxyethylene ether (AEO7) (n=7), mix well, obtain A liquid; Mix 2.5 mass parts sodium hydroxide, 4 mass parts sodium polyaspartate and 40 mass parts deionized water, obtain Liquid B: Mix liquid A and liquid B evenly, and stir at 120° C. at 100 rpm for 6 hours to obtain the phosphorus-free metal cleaning agent.

[0035] Dilute the prepared phosphorus-free metal cleaning agent with deionized water to a solution with a mass fraction of 3%, and clean the metal processing test piece. The cleaning temperature is 60-80 ° ...

Embodiment 3

[0037] (1) Preparation of anionic surfactant II: 2Kg monoethanolamine and 3Kg diethanolamine are put in the reactor, add 1Kg coconut oil acid (the addition speed of liquid fatty acid is 10L / min) and 0.2Kg deionized water, then heat to After stirring at 80° C. for 8 hours at a stirring speed of 80 rpm, the anionic surfactant II was obtained.

[0038] (2) Preparation of phosphorus-free metal cleaning agent: 26 parts by mass of Swire oil, 13 parts by mass of AEO3 and 13 parts by mass of AEO5 were added to 12 parts by mass of the anionic surfactant II prepared in step (1), and mixed evenly to obtain liquid A; Mix 4 parts by mass of potassium carbonate, 5 parts by mass of sodium polyepoxysuccinate and 42 parts by mass of deionized water to obtain liquid B; mix liquid A and liquid B, and stir at 100°C at 100rpm for 10 hours to obtain the obtained Phosphorus-free metal cleaner.

[0039] Dilute the prepared phosphorus-free metal cleaning agent with deionized water to a solution with ...

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PUM

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Abstract

The invention discloses a phosphate-free metal cleaner and a preparation method and an application thereof and the preparation method comprises the following steps: mixing 20-30 parts of anionic surfactant I, 25-35 parts of nonionic surfactant and 5-15 parts of anionic surfactant II evenly to obtain solution A; mixing 2-8 parts of phosphorus-free builder, 1-5 parts of alkaline substance and 35-45 parts of water evenly to obtain solution B; mixing the solution A and the solution B, and stirring at 40-120 DEG C to obtain the phosphate-free metal cleaner. The phosphate-free metal cleaner is characterized in that the metal cleaner has high cleaning degree, strong rust-preventing ability, low foam and low temperature cleaning performance, simple process, low production cost and wide use range, the metal cleaner can be used to clean nonferrous metal and ferrous metal at the same time, the raw material formula does not contain phosphate and nitrite, and surfactant and alkylphenol ethoxylate which are difficult to biodegradate, and the metal cleaner has no toxity, harm, skin allergy, eye irritation reaction and pollution to ecotope, thus having great potential for marketization.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to a phosphorus-free metal cleaning agent and its preparation method and application. Background technique [0002] At present, the metal surface cleaning agents commonly used in China have a single function and a single cleaning object (only non-ferrous metals or ferrous metals can be cleaned). Most of the metal cleaning agent formulations still contain phosphates that pollute the environment and potential carcinogenic nitrites. At the same time, the formulations also contain branched chain alkylbenzenesulfonic acid, a surfactant that is not biodegradable. Sodium and alkylphenol polyvinyl chloride ether substances, and alkylphenol polyoxyethylene ethers have "female effect" and distortion effects. Therefore, the currently commonly used cleaning agents are toxic and harmful to organisms (including the human body) during use. Pollution to the ecological environment. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C23G5/06
Inventor 李茂生林心勇刘长期李朝圣
Owner GUANGZHOU MECHANICAL ENG RES INST
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