Protectant of vehicle water tank and preparing method thereof

A technology for automobile water tanks and protective agents, applied in chemical instruments and methods, mechanical equipment, vehicle parts, etc., can solve the problems of shortening the service life of water tanks, affecting the normal operation of automobiles, and increasing automobile operating costs, so as to reduce operating costs, Realize the effect of maintenance-free and avoid surface corrosion

Inactive Publication Date: 2004-12-08
徐民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The automobile water tank is an indispensable heat dissipation part of the engine cooling system. The water runs at high temperature in the cooling system. The water medium and the impurity ions in it cause great corrosion to the water tank and form layers of scale, which not only affects the heat dissipation of the water tank, but also due to long-term Over time, the surface corrosion causes the water tank to be corroded and perforated quickly, which greatly shortens the service life of the water tank and increases the operating cost of the car. In severe cases, it directly affects the normal operation of the car

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Protective agent for automobile water tank of the present invention, its quality batching consists of:

[0030] 20 parts of sodium polyacrylate with a molecular weight range of 2000, 1 part of borax, 0.8 parts of sodium nitrite, 1.5 parts of sodium dihydrogen phosphate, 0.01 part of sodium benzoate, 0.1 part of benzotriazole, 0.5 parts of sodium metaphosphate, and 70 parts of water.

[0031] Preparation method: In addition to sodium polyacrylate, mix other components uniformly in advance; add water into a stainless steel reaction tank equipped with a stirrer, reflux condenser, dropping funnel and thermometer, then add sodium polyacrylate and stir evenly, and then Slowly add other components and stir evenly. The stirring and mixing temperature is controlled at 25°C. After mixing evenly, adjust the pH value to 7.8 with phosphoric acid, and stand still to obtain the product.

Embodiment 2

[0033] Protective agent for automobile water tank of the present invention, its quality batching consists of:

[0034] 22 parts of sodium polyacrylate with a molecular weight range of 1500, 1.3 parts of borax, 0.6 parts of sodium nitrite, 2 parts of sodium dihydrogen phosphate, 0.01 part of sodium benzoate, 0.1 part of benzotriazole, 0.5 parts of sodium metaphosphate, and 55 parts of water.

[0035] Preparation:

[0036] Stirring and mixing temperature is controlled at 25° C., after mixing evenly, the pH value is adjusted to 8 with phosphoric acid, and the others are the same as in Example 1.

Embodiment 3

[0038] Protective agent for automobile water tank of the present invention, its quality batching consists of:

[0039] 25 parts of sodium polyacrylate with a molecular weight range of 1800, 0.9 part of borax, 0.8 part of sodium nitrite, 1.9 parts of sodium dihydrogen phosphate, 0.01 part of sodium benzoate, 0.1 part of benzotriazole, 0.5 part of sodium metaphosphate, and 75 parts of water.

[0040] Preparation:

[0041] Stirring and mixing temperature is controlled at 26° C., after mixing evenly, the pH value is adjusted to 7.7 with phosphoric acid, and the others are the same as in Example 1.

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PUM

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Abstract

A protecting agent for the water tank in car is prepared from sodium polyacrylate, borax, sodium nitrite, and one or more of sodium dihydrogen phosphate, sodium benzoate, benzotriazole and sodium metaphosphate through propertional and sequential mixing. Its advantages are high effect to elongate the service life of water tank, no poison and ordor, and low cost.

Description

technical field [0001] The invention relates to an automobile water tank protective agent technology, which is an anti-corrosion product and belongs to the technical field of chemical products. Background technique [0002] The car water tank is an indispensable heat dissipation part of the engine cooling system. The water runs at high temperature in the cooling system. The water medium and the impurity ions in it cause great corrosion to the water tank and form layers of scale, which not only affects the heat dissipation of the water tank, but also due to long-term The surface corrosion of time makes the water tank corroded and perforated quickly, which greatly shortens the service life of the water tank and increases the operating cost of the car. In serious cases, it directly affects the normal operation of the car. [0003] Currently, there are several tank descaling agents on the market, with different compositions and different effects. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K11/04C02F5/10F16H41/30
Inventor 徐民
Owner 徐民
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