Method for coating aluminum powder with organic-inorganic hybrid film

A technology of surface coating and hybrid film, which is applied in chemical instruments and methods, dyeing low-molecular organic compound treatment, inorganic pigment treatment, etc., can solve problems such as chaotic alignment of aluminum powder pigments and differences in orientation alignment of aluminum powder pigments, etc. Achieve the effect of improving the overall process level, improving energy saving and environmental protection, and maintaining product stability

Pending Publication Date: 2021-05-25
HUNAN JINHAO ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Nowadays, powder coatings with non-leafing aluminum powder effects are used instead of paints. At present, there are two technical difficulties: the first point is the difference in pigment-base ratio, that is, the content of aluminum powder pigment per unit volume in powder coatings is far less than that of paints. The content of aluminum powder pigment per unit volume in the coating, the second point is the difference in the orientation arrangement of aluminum powder pigment, the orientation arrangement of aluminum powder pigment in the powder coating film is chaotic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The invention provides a technical solution: a method for coating the surface of aluminum powder with an organic-inorganic hybrid film, the manufacturing method comprising the following steps:

[0039] S1. Select the material first, select qualified non-leafing aluminum powder, the non-leafing aluminum powder is divided into dry powder with full solid content, and select the slurry;

[0040] S2. Carry out a comprehensive inspection of the particle size and white brightness of the raw material powder selected in S1, screen out the qualified material powder, put it in a storage container, and affix a label;

[0041] S3, prepare sodium hydroxide solution, in configuration process, use pH meter to detect the pH value of sodium hydroxide in real time, and make its pH value within a certain range;

[0042] S4. Select a suitable coupling agent and orthosilicic acid as a coating agent, store the coating agent in a storage container, and affix a corresponding label;

[0043] S5...

Embodiment 2

[0053] S1. Select the material first, select qualified non-leafing aluminum powder, the non-leafing aluminum powder is divided into dry powder with full solid content, and select the slurry;

[0054] S2. Carry out a comprehensive inspection of the particle size and white brightness of the raw material powder selected in S1, screen out the qualified material powder, put it in a storage container, and affix a label;

[0055] S3, prepare sodium hydroxide solution, in configuration process, use pH meter to detect the pH value of sodium hydroxide in real time, and make its pH value within a certain range;

[0056] S4. Select a suitable coupling agent and orthosilicic acid as a coating agent, store the coating agent in a storage container, and affix a corresponding label;

[0057] S5. Add the raw materials screened in S2 into the disperser, and add 94% ethanol solution to the disperser for the first time, and carry out 1.2h pre-dispersion treatment on the raw material aluminum powde...

Embodiment 3

[0067] S1. Select the material first, select qualified non-leafing aluminum powder, the non-leafing aluminum powder is divided into dry powder with full solid content, and select the slurry;

[0068] S2. Carry out a comprehensive inspection of the particle size and white brightness of the raw material powder selected in S1, screen out the qualified material powder, put it in a storage container, and affix a label;

[0069] S3, prepare sodium hydroxide solution, in configuration process, use pH meter to detect the pH value of sodium hydroxide in real time, and make its pH value in the scope of 9.2-9.5;

[0070] S4. Select a suitable coupling agent and orthosilicic acid as a coating agent, store the coating agent in a storage container, and affix a corresponding label;

[0071] S5. Add the raw materials screened in S2 into the disperser, and add 92% ethanol solution to the disperser for the first time, and pre-disperse the raw aluminum powder for 1 hour. The pre-disperser adopts...

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Abstract

The invention discloses a method for coating aluminum powder with an organic-inorganic hybrid film. The method comprises selecting materials, wherein qualified non-floating aluminum powder is selected and divided into dry powder with full solid content, and slurry is selected. The method has the advantages of high purity, simple equipment, low cost, easy cleaning and the like, the coated aluminum powder has good chemical stability, the pigment characteristic of the coated aluminum powder is enhanced, the coated aluminum powder has certain alkali resistance, and the problems that a product is prone to oxidation, not environmentally friendly and the like are solved; the non-floating aluminum powder effect is used for replacing the paint effect; the metal effect, powdering performance, weather resistance and safety are achieved, the pH value detection and adjustment step is arranged in the method, the product can meet the requirement of being added in a solvent with the corresponding pH value, the product stability is kept, the ethanol rectification and recovery step is arranged in the method, ethanol used in the preparation reaction process can be effectively recovered, the waste of redundant ethanol is avoided, and resources are saved.

Description

technical field [0001] The invention belongs to the technical field of coating aluminum powder production, and in particular relates to a method for coating the surface of aluminum powder with an organic-inorganic hybrid film. Background technique [0002] As the market environment changes, metallic effects have been used as popular colors in outdoor products such as commercial buildings and automobiles in recent years. They are all challenged. The market’s expectations for closer paint effects have indirectly promoted more investment in the research and development of high-performance aluminum powder pigments for metal effect pigment manufacturers. The market also expects powder coating manufacturers and metal effect pigment manufacturers to work together to achieve powder coatings. Paint metallic effects for more breakthroughs. In short, there are at least two new opportunities for metal powder coatings under the new policy of environmental protection. One is to use mirro...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/06C09C3/08C09D5/03C09D7/62
CPCC08K9/10C08K2003/0812C09C1/648C09C3/006C09C3/063C09C3/08C09D5/035
Inventor 李代水向文改龙郑易向胜华李代权
Owner HUNAN JINHAO ALUMINUM IND
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