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A kind of preparation method of low-foam cleaning agent

A cleaning agent and defoaming agent technology, applied in the field of cleaning, can solve the problems of shortened cleaning agent life, lower cleaning efficiency, and easy residue, etc., and achieve the effects of overcoming the long induction period, increasing the reaction rate, and increasing the conversion rate

Active Publication Date: 2021-03-02
WUHAN SPACEFLIGHT SCI & TECH PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based metal cleaning agents are prone to foaming and residues. In severe cases, the foam overflows and takes away a large amount of surfactant, which shortens the life of the cleaning agent, and the foam will reduce the cleaning efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention provides a kind of preparation method of low-foam cleaning agent, comprises the following steps:

[0029] Among them, the formula of low-foaming cleaning agent is: anhydrous sodium metasilicate 1.6%-2.0%, polytricarboxylate 2%-4%, carboxylic acid amine corrosion inhibitor 1%-3%, benzotriazole 1%-3%, polyacrylic acid 1%-3%, polyether modified silicone type defoamer 5%-8%, foam inhibitor ED3060 2%-4%, water balance;

[0030] Wherein the preparation method of polyether modified silicone type defoamer is:

[0031] S1: Preparation of hydrogen-containing silicone oil: use 0.15g solid superacid to catalyze 10kg of hexamethyldisiloxane, 6kg of octamethylcyclotetrasiloxane, and 8kg of tetramethylcyclotetrasiloxane, and heat in a water bath for 35 ℃, reacted for 6 hours, and filtered to obtain hydrogen-containing silicone oil;

[0032] S2: Put 10 μg of platinum catalyst, 100 μg of polyethylene glycol 200, 20 g of ethyl acetate and 10 g of hydroquinone into a react...

Embodiment 2

[0036] The invention provides a kind of preparation method of low-foam cleaning agent, comprises the following steps:

[0037] Among them, the formula of low-foaming cleaning agent is: anhydrous sodium metasilicate 1.6%-2.0%, polytricarboxylate 2%-4%, carboxylic acid amine corrosion inhibitor 1%-3%, benzotriazole 1%-3%, polyacrylic acid 1%-3%, polyether modified silicone type defoamer 5%-8%, foam inhibitor ED3060 2%-4%, water balance;

[0038] Wherein the preparation method of polyether modified silicone type defoamer is:

[0039] S1: Preparation of hydrogen-containing silicone oil: use 0.2g solid superacid to catalyze 10kg of hexamethyldisiloxane, 6kg of octamethylcyclotetrasiloxane, and 8kg of tetramethylcyclotetrasiloxane, and heat in a water bath for 35 ℃, reacted for 6 hours, and filtered to obtain hydrogen-containing silicone oil;

[0040] S2: put 20 μg of platinum catalyst, 150 μg of polyethylene glycol 200, 35 g of ethyl acetate and 20 g of hydroquinone into a reacti...

Embodiment 3

[0044] The invention provides a kind of preparation method of low-foam cleaning agent, comprises the following steps:

[0045] Among them, the formula of low-foaming cleaning agent is: anhydrous sodium metasilicate 1.6%-2.0%, polytricarboxylate 2%-4%, carboxylic acid amine corrosion inhibitor 1%-3%, benzotriazole 1%-3%, polyacrylic acid 1%-3%, polyether modified silicone type defoamer 5%-8%, foam inhibitor ED3060 2%-4%, water balance;

[0046] Wherein the preparation method of polyether modified silicone type defoamer is:

[0047] S1: Preparation of hydrogen-containing silicone oil: use 0.25g solid superacid to catalyze 10kg of hexamethyldisiloxane, 6kg of octamethylcyclotetrasiloxane, and 8kg of tetramethylcyclotetrasiloxane, and heat in a water bath for 35 ℃, reacted for 6 hours, and filtered to obtain hydrogen-containing silicone oil;

[0048] S2: Put 30 μg of platinum catalyst, 200 μg of polyethylene glycol 200, 50 g of ethyl acetate and 30 g of hydroquinone into a react...

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Abstract

The invention provides a method for preparing a low-foaming cleaning agent, wherein the formula of the low-foaming cleaning agent is: anhydrous sodium metasilicate 1.6%-2.0%, polytricarboxylic acid ester 2%-4%, carboxylic acid amine Corrosion inhibitor 1%-3%, benzotriazole 1%-3%, polyacrylic acid 1%-3%, polyether modified silicone type defoamer 5%-8%, foam inhibitor 2%- 4%, water balance; wherein the preparation method of polyether modified silicone type defoamer is: prepare hydrogen-containing silicone oil; prepare mixed solution A; synthesis reaction; obtain viscous solid B which is polyether modified silicone Type defoamer. The object of the present invention is to provide a preparation method of a low-foam cleaning agent with low foam height and good cleaning effect.

Description

technical field [0001] The invention relates to the technical field of cleaning, in particular to a preparation method of a low-foaming cleaning agent. Background technique [0002] After the metal workpiece is processed, the surface will carry dirt, such as various cutting fluids, guide rail oil, etc. If it is not cleaned, it will not only affect the smooth progress of the processing process, but also cause and accelerate the corrosion of the metal surface, affecting the processing quality and use of the product life. In addition, before finishing such as electroplating, phosphating (silanization), glaze coating, spray painting, etc., as well as in the repair and maintenance of mechanical equipment, the cleaning process is inseparable. The choice of cleaning process and the quality of the cleaning effect not only involve major issues such as safety, energy and environmental protection, but also directly affect the performance and quality of the product. Therefore, the clea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/66C11D3/08C11D3/33C11D3/28C11D3/37C11D3/60
CPCC11D1/667C11D3/08C11D3/28C11D3/33C11D3/3707C11D3/3765
Inventor 倪维力彭钰珩袁婷婷喻翔沈东晓李松
Owner WUHAN SPACEFLIGHT SCI & TECH PETROCHEM CO LTD
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