A kind of preparation method of low-foaming metal cleaning agent

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

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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  • A kind of preparation method of low-foaming metal cleaning agent
  • A kind of preparation method of low-foaming metal cleaning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0029] Among them, the formula of low-foaming metal cleaning agent is: LAS10%-20%, oleic acid 8%-16%, triethanolamine 10%-18%, OP-102%-5%, benzotriazole 0.1%-0.3% , sodium carboxymethyl cellulose 0.1%-0.5%, STPP 0.5%-1.0%, sodium p-toluenesulfonate 0.5%-1.0%, polyether modified silicone type defoamer 5%-8%, antifoam Agent 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 600, 20 g of ethyl acetate and...

Embodiment 2

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

[0037] Among them, the formula of low-foaming metal cleaning agent is: LAS10%-20%, oleic acid 8%-16%, triethanolamine 10%-18%, OP-102%-5%, benzotriazole 0.1%-0.3% , sodium carboxymethyl cellulose 0.1%-0.5%, STPP 0.5%-1.0%, sodium p-toluenesulfonate 0.5%-1.0%, polyether modified silicone type defoamer 5%-8%, antifoam Agent 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 600, 35 g of ethyl acetate and ...

Embodiment 3

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

[0045] Among them, the formula of low-foaming metal cleaning agent is: LAS10%-20%, oleic acid 8%-16%, triethanolamine 10%-18%, OP-102%-5%, benzotriazole 0.1%-0.3% , sodium carboxymethyl cellulose 0.1%-0.5%, STPP 0.5%-1.0%, sodium p-toluenesulfonate 0.5%-1.0%, polyether modified silicone type defoamer 5%-8%, antifoam Agent 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 600, 50 g of ethyl acetate and...

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Abstract

The invention provides a preparation method of a low-foaming metal cleaning agent, wherein the formula of the low-foaming metal cleaning agent is: LAS 10%-20%, oleic acid 8%-16%, triethanolamine 10%-18%, OP-10 2%‑5%, Benzotriazole 0.1%‑0.3%, Sodium carboxymethylcellulose 0.1%‑0.5%, STPP0.5%‑1.0%, Sodium p-toluenesulfonate 0.5%‑1.0%, Polyether Modified silicone type defoamer 5%-8%, antifoam agent 2%-4%, water balance; wherein the preparation method of polyether modified silicone type defoamer is: preparing hydrogen-containing silicone oil; preparing and mixing Liquid A; synthetic reaction; viscous solid B is obtained, which is polyether modified silicone defoamer. The object of the present invention is to provide a method for preparing a low-foam metal 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 metal 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, th...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C23G1/24
CPCC23G1/24
Inventor倪维力喻翔彭钰珩袁婷婷沈东晓李松
OwnerWUHAN SPACEFLIGHT SCI & TECH PETROCHEM CO LTD