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A kind of stainless steel oxide layer cleaning agent and preparation method and application thereof

A technology of stainless steel and oxide layer, which is applied in the field of surface cleaning and surface treatment, can solve the problems of weak acidity, high cost, poor effect, etc., and achieve the effect of simple preparation method, long service life and broad application prospect

Active Publication Date: 2016-05-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although organic acids have good biodegradability, due to their weak acidity, using organic acids alone to provide an acidic environment to clean the oxide layer of stainless steel is basically ineffective and the cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In a 1000mL three-neck round bottom flask, dissolve 350g of α-cyclodextrin, 50g of sodium oleate, 50g of alkyl glucoside and 50g of coconut oil fatty acid diethanolamide in 350g of deionized water, stir at room temperature for 30min, and slowly raise the temperature to 60°C , Stir the reaction for 24.0h. Stir to cool down, filter to remove insoluble matter, put the obtained filtrate into a 1000mL three-neck round bottom flask, stir and add 150g of citric acid, stir at room temperature for 30min, slowly raise the temperature to 60°C, and stir for 24.0h. Stir to cool down, filter, remove insolubles, and obtain 998g of cleaning agent for stainless steel oxide layer.

Embodiment 2

[0020] In a 1000mL three-neck round bottom flask, dissolve 350g of β-cyclodextrin, 50g of sodium oleate, 50g of alkyl glucoside and 50g of coconut oil fatty acid diethanolamide in 350g of deionized water, stir at room temperature for 30min, and slowly raise the temperature to 60°C , Stir the reaction for 24.0h. Stir to cool down, filter to remove insoluble matter, put the obtained filtrate into a 1000mL three-necked round bottom flask, stir and add 150g of citric acid, stir at room temperature for 30min, slowly raise the temperature to 60°C, and stir for 24.0h. Stir to cool down, filter, remove insolubles, and obtain 998g of cleaning agent for stainless steel oxide layer.

Embodiment 3

[0022] In a 1000mL three-neck round bottom flask, dissolve 350g of γ-cyclodextrin, 50g of sodium oleate, 50g of alkyl glycosides and 50g of coconut oil fatty acid diethanolamide in 350g of deionized water, stir at room temperature for 30min, and slowly raise the temperature to 60°C , Stir the reaction for 24.0h. Stir to cool down, filter to remove insoluble matter, put the obtained filtrate into a 1000mL three-necked round bottom flask, stir and add 150g of citric acid, stir at room temperature for 30min, slowly raise the temperature to 60°C, and stir for 24.0h. Stir to cool down, filter, remove insolubles, and obtain 998g of cleaning agent for stainless steel oxide layer.

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PUM

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Abstract

The invention discloses a stainless steel oxidizing layer cleaning agent and a preparation method and application thereof. The stainless steel oxidizing layer cleaning agent comprises the following raw materials: 30% to 50% of cyclodextrin, 10% to 20% of organic acid, 10% to 20% of a composite surface active agent, and the balance of water, wherein the cyclodextrin is a mixture of one or more than two of alpha-cyclodextrin, beta-cyclodextrin, gamma-cyclodextrin, hydroxypropyl beta-cyclodextrin and methylase beta-cyclodextrin; the organic acid is a mixture of one or more than two of methane acid, ethane acid, propionic acid, lemon acid, oxalic acid, maleic acid and lauric acid; the composite surface active agent is a mixture of one or more than two of sodium oleate, alkyl glycoside, lauryl sodium sulfate, coconut fatty acid diethanol amide, fatty alcohol-polyoxyethylene ether and polyethylene glycol. The stainless steel oxidizing layer cleaning agent has the advantages that the preparation method is simple, the use and operation are convenient, the service life is long, the generation amount of wastewater is small, the components can be easily and biologically degraded, the green and environment-friendly effects are realized, and the cost is low. The stainless steel oxidizing layer cleaning agent has the potentiality of replacing the existing stainless steel oxidizing layer cleaning agent using inorganic acid as the main component.

Description

technical field [0001] The invention relates to a cleaning agent for stainless steel oxide layer and its preparation method and application, belonging to the field of surface cleaning and surface treatment. Background technique [0002] Oxide layer will inevitably be formed in the production process of stainless steel. The existence of oxide layer not only affects the appearance of stainless steel, but also affects the further processing of stainless steel. The removal of stainless steel oxide layer has become an indispensable step in stainless steel processing. Currently used stainless steel oxide layer cleaners are mainly inorganic acids, including nitric acid, hydrochloric acid, phosphoric acid, hydrofluoric acid, etc. , 29). Inorganic acid is highly corrosive and can achieve the purpose of cleaning the oxide layer of stainless steel. However, the stainless steel oxide layer cleaning agent based on inorganic acid has a short service life, a large amount of waste water, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/08
Inventor 沈海民史鸿鑫武宏科
Owner ZHEJIANG UNIV OF TECH
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