Preparation method of polyether modified organic silicon defoamer containing low-foaming cleaner

A technology of polyether modification and silicone, 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: 2019-03-19
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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  • Preparation method of polyether modified organic silicon defoamer containing low-foaming cleaner
  • Preparation method of polyether modified organic silicon defoamer containing low-foaming cleaner

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] The invention provides a method for preparing a low-foaming cleaning agent containing a polyether-modified silicone type defoamer, comprising the following steps:

[0029] Among them, the formula of low-foaming cleaning agent is: Gemini anionic surfactant 1.0%-1.2%, non-ionic surfactant 6%-10%, modified sodium disilicate 0.5%-1.0%, sodium carbonate 0.25%-5% , Triethanolamine 0.5%-1.1%, Dipropylene Glycol Butyl Ether 1.0%-1.5%, Polyethylene Glycol Ether 0.5%-1.0%, Solubilizer 0.5%-1.0%, Polyether Modified Silicone Defoamer 5%- 8%, anti-foaming 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...

Embodiment 2

[0036] The invention provides a method for preparing a low-foaming cleaning agent containing a polyether-modified silicone type defoamer, comprising the following steps:

[0037] Among them, the formula of low-foaming cleaning agent is: Gemini anionic surfactant 1.0%-1.2%, non-ionic surfactant 6%-10%, modified sodium disilicate 0.5%-1.0%, sodium carbonate 0.25%-5% , Triethanolamine 0.5%-1.1%, Dipropylene Glycol Butyl Ether 1.0%-1.5%, Polyethylene Glycol Ether 0.5%-1.0%, Solubilizer 0.5%-1.0%, Polyether Modified Silicone Defoamer 5%- 8%, anti-foaming 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 ...

Embodiment 3

[0044] The invention provides a method for preparing a low-foaming cleaning agent containing a polyether-modified silicone type defoamer, comprising the following steps:

[0045] Among them, the formula of low-foaming cleaning agent is: Gemini anionic surfactant 1.0%-1.2%, non-ionic surfactant 6%-10%, modified sodium disilicate 0.5%-1.0%, sodium carbonate 0.25%-5% , Triethanolamine 0.5%-1.1%, Dipropylene Glycol Butyl Ether 1.0%-1.5%, Polyethylene Glycol Ether 0.5%-1.0%, Solubilizer 0.5%-1.0%, Polyether Modified Silicone Defoamer 5%- 8%, anti-foaming 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...

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Abstract

The invention provides a preparation method of a polyether modified organic silicon defoamer containing low-foaming cleaner. The polyether modified organic silicon defoamer containing low-foaming cleaner is composed of 1.0-1.2% of twin anionic surfactant, 6-10% of nonionic surfactant, 0.5-1.0% of modified sodium disilicate, 0.25-0.5% of sodium carbonate, 0.5-1.1% of triethanolamine, 1.0-1.5% of dipropylene glycol butyl ether, 0.5-1.0% of polyethylene glycol ethyl ether, 0.5-1.0% of solubilizer, 5-8% of polyether modified organic silicon defoamer, 2-4% of foam inhibitor and water as balance, wherein the preparation method of the polyether modified organic silicon defoamer comprises preparing hydrogen silicone oil, preparing a mixed solution A and performing synthesis to obtain a thick solidB, namely, the polyether modified organic silicon defoamer. According to the preparation method of the polyether modified organic silicon defoamer containing low-foaming cleaner, the prepared p polyether modified organic silicon defoamer containing low-foaming cleaner is low in foam height and good in cleaning effects.

Description

technical field [0001] The invention relates to the field of cleaning technology, in particular to a preparation method of a low-foaming cleaning agent containing a polyether-modified silicone type defoamer. 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 per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/83C11D3/60C11D3/08C11D3/10C11D3/20C11D3/30C11D3/37
CPCC11D1/83C11D3/0026C11D3/08C11D3/10C11D3/2068C11D3/30C11D3/3738
Inventor 倪维力袁婷婷彭钰珩喻翔沈东晓李松
Owner WUHAN SPACEFLIGHT SCI & TECH PETROCHEM CO LTD
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