Preparation method of corrosive liquid for simulating special climatic environment as well as corrosive liquid and application thereof

A climate environment, corrosive liquid technology, applied in the direction of weather resistance/light resistance/corrosion resistance, instruments, analysis materials, etc., can solve the problem of using corrosive liquid together, and achieve the effect of shortening the simulated corrosion time

Pending Publication Date: 2022-04-08
DONGFENG PEUGEOT CITROEN AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no corrosive solution that simulates this special climate environment in the prior art to be used in conjunction with it

Method used

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  • Preparation method of corrosive liquid for simulating special climatic environment as well as corrosive liquid and application thereof
  • Preparation method of corrosive liquid for simulating special climatic environment as well as corrosive liquid and application thereof
  • Preparation method of corrosive liquid for simulating special climatic environment as well as corrosive liquid and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a preparation method for simulating a special climate environment corrosion solution, including the following steps:

[0048] a. Add 0.25g of copper nitrate trihydrate, 0.45g of ferric chloride hexahydrate, 4g of anhydrous ammonium sulfate, and 50g of sodium chloride to 800mL of deionized water in sequence, and stir until fully dissolved;

[0049] b. Add 15 g of kaolin and 1.2 g of sodium lauryl sulfate to the liquid obtained in step a in sequence, stir slowly and evenly, and dilute to 1 L with deionized water;

[0050] c. Add a few drops of 10% acetic acid solution by volume to the liquid obtained in step b to adjust the pH value to 3.2-3.5, and put the prepared corrosion solution into a brown reagent bottle and store it away from light.

Embodiment 2

[0052] This embodiment provides a preparation method for simulating a special climate environment corrosion solution, including the following steps:

[0053] a. Add 0.1g copper nitrate trihydrate, 0.4g ferric chloride hexahydrate, 5g anhydrous ammonium sulfate, and 55g sodium chloride to 500mL deionized water in sequence, and stir until fully dissolved;

[0054] b. Then add 10g of kaolin and 3g of sodium lauryl sulfate in sequence, stir slowly and evenly, and dilute to 1L with deionized water;

[0055] c. Drop a few drops of 10% acetic acid solution by volume to adjust the pH value to 3.2-3.5, and put the prepared corrosion solution into a brown reagent bottle and store it away from light.

Embodiment 3

[0057] This embodiment provides a preparation method for simulating a special climate environment corrosion solution, including the following steps:

[0058] a. Add 0.5g of copper nitrate trihydrate, 0.8g of ferric chloride hexahydrate, 2g of anhydrous ammonium sulfate, and 30g of sodium chloride in sequence to 800mL of deionized water, and stir until fully dissolved;

[0059] b. Then add 30g of kaolin and 0.5g of sodium lauryl sulfate in sequence, stir slowly and uniformly, and dilute to 1L with deionized water;

[0060] c. Add 0.5 g of sodium lauryl sulfate to container I and stir slowly and evenly, transfer all the raw materials in container I into a volumetric flask, add water to make it volume to 1 liter;

[0061] d. Drop a few drops of 15% acetic acid solution by volume to adjust the pH value to 3.2-3.5, and put the prepared corrosion solution into a brown reagent bottle and store it away from light.

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Abstract

The invention discloses a preparation method of a corrosive liquid for simulating a special climatic environment as well as the corrosive liquid and application of the corrosive liquid. The preparation method of the corrosive liquid comprises the following steps: a, sequentially adding 0.1-0.5 g of copper nitrate trihydrate, 0.4-0.8 g of ferric chloride hexahydrate, 2.0-5.0 g of anhydrous ammonium sulfate and 30-55g of sodium chloride into deionized water, and stirring until the materials are fully dissolved; b, 10-30 g of kaolin and 0.5-3.0 g of lauryl sodium sulfate are continuously added and slowly stirred to be uniform, and deionized water is used for fixing the volume to 1 L; and c, adjusting the pH value to 3.2-3.5 by using a plurality of drops of 10-20% by volume of acetic acid solution to obtain the corrosive liquid, and storing in a dark place. The corrosion liquid prepared by the invention is combined with an existing evaluation device to accurately simulate the corrosion risk of a part in a special climate environment region, so that effective identification and correction are performed in a test stage.

Description

technical field [0001] The invention relates to the evaluation of the corrosion and aging resistance of automobile exterior decoration parts, in particular to a preparation method of a corrosive liquid for simulating a special climate environment, the corrosive liquid and its application. Background technique [0002] Automotive exterior parts often adopt some surface treatment processes for aesthetic design to reflect a brighter metallic luster to maximize consumer appeal. Commonly used surface treatments include bright chrome plating on plastics, high-gloss anodizing on aluminum alloys, and high-gloss polishing on stainless steel. deal with. With the promotion and application of the automotive globalization strategy, automotive exterior parts must face more complex and special application environment tests. For example, in tropical rainforest and marine climate conditions, such parts may not be able to guarantee good appearance performance, resulting in loss of gloss , co...

Claims

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Application Information

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IPC IPC(8): C23F1/16C23F1/28G01N17/00
Inventor 晏涛蒋焕均谢耀文张军龙宇
Owner DONGFENG PEUGEOT CITROEN AUTOMOBILE
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