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A kind of smokeless mirror chemical polishing liquid

A technology of chemical polishing and brightener, applied in the field of chemical polishing, can solve the problems of nitric acid safety hazards and hazards, consistent product quality, operator injury, etc., and achieve the effects of improving the pass rate, fast light output speed, and saving labor costs

Active Publication Date: 2017-11-14
湖北安登环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the strong oxidation, volatility and instability of nitric acid when it is reduced, nitric acid has many potential safety hazards and hazards in transportation and filling, bath configuration, daily replenishment, heating, and production operations.
Especially in the process of aluminum polishing, nitric acid is strongly reduced by aluminum to toxic and harmful NO 2 Yellow smoke causes physical and mental harm to operators, and at the same time causes corrosion to equipment and pollutes the environment
At the same time, nitric acid is continuously consumed along with the production, and it is often difficult to ensure consistent product quality by adding it based on experience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Smokeless mirror chemical polishing liquid, the concentration of 75% by weight is 85% phosphoric acid, the concentration of 3% is 98% sulfuric acid, the mixture of 0.5% barium titanate and copper sulfate pentahydrate, 0.8% diperoxide A mixture of isononanoyl and acetone, a mixture of 0.5% N-alkylthiourea and sodium polyphosphate, a mixture of 0.1% magnesium sulfate and zinc sulfate, 0.5% grade europium sulfate and the balance of water 100% into a temperature-adjustable reactor, heated to 75 ° C, and stirred at a constant temperature for 0.5 hours to prepare. And the mass ratio of 85% phosphoric acid to 98% sulfuric acid is 20:1.

Embodiment 2

[0019] Smokeless mirror chemical polishing liquid, the concentration of 80% by weight is 85% phosphoric acid, 4% concentration is 98% sulfuric acid, a mixture of 1% barium titanate and copper sulfate pentahydrate, 1.2% di A mixture of isononanoyl and acetone, a mixture of 0.6% N-alkylthiourea and sodium polyphosphate, a mixture of 0.3% magnesium sulfate and zinc sulfate, 0.7% grade europium sulfate and the balance of water 100% and then placed in the temperature-adjustable reaction kettle, heated to 80 ° C, and stirred for 0.5 hours under constant temperature conditions. And the mass ratio of 85% phosphoric acid to 98% sulfuric acid is 20:1.

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PUM

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Abstract

The invention discloses a smokeless mirror chemical polishing solution, which is composed of 75-80% by weight of phosphoric acid, 3-4% of sulfuric acid, 0.5-1% of brightener, 0.8-1.2% of oxidant, 0.5-0.6 % corrosion inhibitor, 0.1~0.3% accelerator, 0.5~0.7‰ catalyst and the balance water. The smokeless mirror chemical polishing liquid does not produce any smoke during the polishing process, nor does it produce irritating or potentially toxic and harmful gases, and has no pollution to the environment; the light output speed is fast during polishing, and the brightness value is almost the same as that of tri-acid polishing; The operation is simple. In actual production, only the relationship between temperature and time needs to be considered, and there is no need to consider others, which saves labor costs for manufacturers.

Description

technical field [0001] The invention belongs to the technical field of chemical polishing, in particular to a smokeless mirror chemical polishing liquid. Background technique [0002] The most widely used in the current chemical polishing of aluminum is the tri-acid polishing composed of phosphoric acid-sulfuric acid-nitric acid. The mass ratio of phosphoric acid-sulfuric acid-nitric acid is roughly 6:3:1, and the operating temperature is about 100°C. Because aluminum has a good decorative property after chemical polishing, it is widely used in home appliances, automobiles, bathrooms, doors and windows, electronics, accessories and other fields. [0003] However, due to the strong oxidation, volatility, and instability of nitric acid when it is reduced, nitric acid has many potential safety hazards and hazards in transportation and filling, bath configuration, daily replenishment, heating, and production operations. Especially in the process of aluminum polishing, nitric a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F3/03
CPCC23F3/03
Inventor 程永青
Owner 湖北安登环保科技有限公司