Corrosion inhibitor for engine coolant and preparation method thereof

A technology for engine coolant and corrosion inhibitor, which is applied in the field of metal material anti-corrosion, can solve the problems of complex synthesis process, high preparation cost, incomplete protection, etc., and achieves the effects of abundant raw material sources, low production cost and good protection effect.

Active Publication Date: 2010-07-28
苏州盛泽科技创业园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art, such as incomplete protection of various metal materials, complex components, expensive raw materials, complex synthesis process, high preparation cost and serious environmental pollution, the purpose of the present invention is to provide a It has a good protective effect on various metal materials such as steel, iron, copper, aluminum and magnesium, and has cheap raw materials, sufficient sources, simple production, low cost, non-toxic and harmless corrosion inhibitor for engine coolant, and the corrosion inhibitor The preparation method of the agent

Method used

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  • Corrosion inhibitor for engine coolant and preparation method thereof
  • Corrosion inhibitor for engine coolant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The specific steps of a method for preparing a corrosion inhibitor for engine coolant are as follows:

[0019] ① Preparation of extract

[0020] Get about 500 grams of fresh pansy flower whole grass scraps, add about 5 liters of water (about 10 times the weight of the whole pansy pansy), carry out ultrasonic-assisted leaching at 85 ° C for 2 hours, cool, stand still, filter, filter The cake repeats the above operation once, collects the extracted crude liquid twice, heats and concentrates to about 0.5 liters, and obtains an extract (equivalent to the whole herb extract of pansies contained in every liter of extract, calculated according to the raw material of whole herb of pansies). 1000 grams).

[0021] ② Preparation of corrosion inhibitor

[0022] Add additives sodium dodecylbenzenesulfonate and lanthanum nitrate to the extract prepared in step ①, stir to mix evenly, and obtain a corrosion inhibitor for engine coolant. Wherein, the addition of sodium dodecylbenzene...

Embodiment 2

[0024] The specific steps of a method for preparing a corrosion inhibitor for engine coolant are as follows:

[0025] ① Preparation of extract

[0026] Get about 500 grams of fresh pansy flower whole grass fragments, add about 3 liters of water (about 6 times the weight of the whole pansy pansy), carry out ultrasonic-assisted leaching at 70 ° C for 1 hour, cool, stand still, filter, filter Cake repeats above-mentioned operation 2 times, collects the extraction thick liquid of three times, heats and concentrates to about 0.5 liters, makes extracting liquid (equivalent to the whole plant extract of Pantera japonica contained in every liter of extracting liquid, calculates 1000 by fresh whole plant of Pantera japonica raw material. gram).

[0027] ② Preparation of corrosion inhibitor

[0028] Add additives sodium dodecylbenzene sulfonate and cerium nitrate to the extract prepared in step ①, stir to mix evenly, and obtain a corrosion inhibitor for engine coolant. Wherein, the a...

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Abstract

The invention belongs to the technical field of corrosion resistance of metal materials, in particular to a corrosion inhibitor for an engine coolant and a preparation method thereof. The corrosion inhibitor for the engine coolant is prepared by adding an appropriate amount of additives in extract liquid of whole plant of iris japonica, iridaceae, iris. The corrosion inhibitor product has the advantages of abundant resources of raw materials, no toxicity, no public nuisance and good corrosion inhibition effect for a variety of metals and can provide the comprehensive anti-corrosion protection for steel, iron, copper, aluminum, magnesium and other metal materials in an engine cooling system, and the preparation method is characterized by simple process, convenient operation, greenness, environmental protection, low production cost, convenient industrial production and the like.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion of metal materials, and in particular relates to a corrosion inhibitor for engine coolant and a preparation method thereof. Background technique [0002] Various metal materials such as steel, iron, copper, aluminum and magnesium in the engine cooling system are easily corroded under the action of coolant. In order to prolong the service life of the engine, corrosion inhibitors are usually added to the engine coolant to slow down or prevent the corrosion of various metal materials in the engine cooling system. Therefore, people have attached great importance to the research and development of corrosion inhibitors for engine coolants for a long time. [0003] The Chinese patent "Efficient Corrosion Inhibitor for Diesel Locomotive Coolant" with the patent number of 89108743.5 provides a compound consisting of sodium tetraborate, sodium nitrite, sodium silicate, benzotriazole, polymaleic anhyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10
Inventor 李凌杰雷惊雷徐辉张胜涛潘复生
Owner 苏州盛泽科技创业园发展有限公司
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