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A corrosion inhibitor for engine coolant

An engine coolant and corrosion inhibitor technology, applied in heat exchange materials, metal material coating processes, chemical instruments and methods, etc., can solve the problem that the coolant cannot meet the requirements of the cooling system, etc., and achieve excellent anti-fouling and dispersing performance. , Reduce the cost of use, good effect

Active Publication Date: 2020-11-06
SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, as people pay more and more attention to environmental protection and energy issues, it has become a trend to replace the original cast iron and other materials with lighter aluminum alloys to reduce the weight of the locomotive itself. After the cooling system material changes, Existing coolants suitable for cast iron materials cannot meet the requirements of cooling systems based on aluminum alloy materials

Method used

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  • A corrosion inhibitor for engine coolant
  • A corrosion inhibitor for engine coolant

Examples

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Effect test

Embodiment 1

[0018] A kind of corrosion inhibitor used for engine coolant, each substance and its mass fraction consist of:

[0019] 25 parts by mass of sodium nitrate

[0020] Sodium molybdate 8 parts by mass

[0021] TH-3100 3 parts by mass

[0022] 64 parts by mass of deionized water

[0023] The specific preparation method is: 42Kg of deionized water, 25Kg of sodium nitrate and 8Kg of sodium molybdate are added to the reactor at 50°C under stirring conditions. After the components are dissolved and mixed evenly, add 3Kg of TH-3100 and The remaining amount of deionized water is 22Kg, and stirred evenly to obtain 100Kg of corrosion inhibitor.

Embodiment 2

[0025] A kind of corrosion inhibitor used for engine coolant, each substance and its mass fraction consist of:

[0026] 20 parts by mass of sodium nitrate

[0027] Sodium molybdate 3 parts by mass

[0028] Sodium gluconate 5 parts by mass

[0029] TH-3100 2 parts by mass

[0030] 70 parts by mass of deionized water

[0031] The specific preparation method is: 45Kg of deionized water, 20Kg of sodium nitrate, 3Kg of sodium molybdate and 5Kg of sodium gluconate are sequentially added to the reaction kettle under stirring conditions at 30°C. After the components are dissolved and mixed evenly, add 2Kg TH-3100 and the balance 25Kg deionized water, stir evenly to get 100Kg corrosion inhibitor.

Embodiment 3

[0033] A kind of corrosion inhibitor used for engine coolant, each substance and its mass fraction consist of:

[0034] 22 parts by mass of sodium nitrate

[0035] Sodium molybdate 5 parts by mass

[0036] Sodium gluconate 3 parts by mass

[0037] TH-3100 4 parts by mass

[0038] 66 parts by mass of deionized water

[0039] The specific preparation method is as follows: 40Kg deionized water, 22Kg sodium nitrate, 5Kg sodium molybdate and 3Kg sodium gluconate are sequentially added to the reaction kettle under stirring conditions at 40°C, and after the components are dissolved and mixed evenly, add 4Kg TH-3100 and the remaining 26Kg of deionized water, stir evenly to obtain 100Kg of corrosion inhibitor.

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Abstract

The invention discloses a corrosion inhibitor for engine cooling liquid. The corrosion inhibitor is specifically prepared from the following components in parts by mass: 20-25 parts of sodium nitrate,5-10 parts of sodium molybdate, 0-5 parts of sodium gluconate, 1-5 parts of TH-3100 and 55-74 parts of deionized water in a composite mode, wherein the TH-3100 is carboxylic acid-sulfonic acid-nonionic terpolymer, has excellent anti-scaling and dispersion properties, and meanwhile can also be used as a stabilizer of the corrosion inhibitor. The corrosion inhibitor belongs to a phosphorus-free environmental protection formula, when the addition quantity of the corrosion inhibitor accounts for 2-5% of the mass percentage of the cooling liquid, a cast aluminum alloy material is well protected, the corrosion inhibition property is excellent, and meanwhile, scale formed in the operation process of a cooling system can be effectively dispersed, and deposition and scaling are prevented.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion, and in particular relates to a corrosion inhibitor used for engine coolant, in particular to an aluminum alloy corrosion inhibitor. Background technique [0002] The pipeline of the locomotive engine cooling system is mainly composed of metal parts. Under the conditions of pressure, heat load and corrosive medium, the metal is prone to corrosion and damages the cooling system. The degree of corrosion is related to the type, nature, pressure and heat load of the material itself, and the medium in the system is also one of the important factors affecting corrosion. To solve the corrosion problem of the engine cooling system, on the one hand, the performance of metal materials can be improved, and alloy materials with strong corrosion resistance can be selected. On the other hand, an important method is to use corrosion inhibitors. [0003] Corrosion inhibitors are the most important additiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/08C23C22/40C09K5/20
CPCC09K5/20C23C22/40C23F11/08
Inventor 王东宇程终发王燕平王宁宁杨修艳齐晓婧李鹏飞
Owner SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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