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Preparation method of water-based high flash aluminum pigment for automobiles

A technology for aluminum pigments and automobiles, applied in fibrous fillers, dyeing physical treatment, dyeing low-molecular organic compound treatment, etc., can solve problems such as lack of reach, thicker aluminum flakes, and decreased metal feeling on the surface of aluminum flakes. Small, prevents welding, and improves compatibility

Inactive Publication Date: 2012-07-25
HEFEI SUNRISE PIGMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the metal feeling on the surface of the passivated coated aluminum sheet will be severely reduced, and the aluminum sheet will become thicker, which cannot meet the requirements of high-end automotive coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment includes the following steps:

[0030] Step 1, take 60 kg of 8 μm raw material spherical aluminum powder, 1200 kg of grinding medium steel balls with a diameter of 0.8 mm, 120 kg of 080 solvent oil, 0.36 kg of oleic acid, and 1.0 kg of coconut oil fatty acid diethanolamide and put them into the ball mill;

[0031] Step 2, seal the ball mill, ball mill with a speed of 60r / min for 6 hours, adjust the speed of the ball mill to 30r / min, ball mill for 2 hours, and discharge with environmentally friendly solvent oil;

[0032] Step 3, the material is input into the vibrating sieve through the pipeline for screening and grading, and the sieve residue is removed, and then entered into a plate and frame filter press for press filtration to obtain a filter cake with a solid content of 80%;

[0033] Step 4, then put the above-mentioned filter cake and 160 kg of ethylene glycol monobutyl ether solvent into the reactor for mixing and dispersing for 0.5 hours, seal the...

Embodiment 2

[0035] This embodiment includes the following steps:

[0036] Step 1, take 50 kg of 8.5 μm raw material spherical aluminum powder, 1200 kg of grinding medium steel balls with a diameter of 1.0 mm, 80 kg of D70 solvent oil, 0.20 kg of oleic acid, and 0.5 kg of sodium dodecylsulfonate and put them into the ball mill;

[0037] Step 2, seal the ball mill, ball mill with a speed of 60r / min for 6 hours, adjust the speed of the ball mill to 30r / min, ball mill for 2 hours, and discharge with environmentally friendly solvent oil;

[0038] Step 3, the material is input into the vibrating sieve through the pipeline for screening and grading, and the sieve residue is removed, and then entered into a plate and frame filter press for press filtration to obtain a filter cake with a solid content of 80%;

[0039] Step 4, then put the above-mentioned filter cake and 120 kg of ethanol solvent into the reactor, mix and disperse for 0.5 hours, seal the reactor, under the protection of inert gas, ...

Embodiment 3

[0041] This embodiment includes the following steps:

[0042]Step 1, take 40 kg of 9 μm raw material spherical aluminum powder, 1200 kg of grinding medium steel balls with a diameter of 1.2 mm, 100 kg of D60 solvent oil, 0.3 kg of oleic acid, and 0.75 kg of sodium lauryl sulfate into the ball mill;

[0043] Step 2, seal the ball mill, ball mill with a speed of 60r / min for 6 hours, adjust the speed of the ball mill to 30r / min, ball mill for 2 hours, and discharge with environmentally friendly solvent oil;

[0044] Step 3: Input the material into the vibrating screen through the pipeline for screening and grading, remove the sieve residue, enter the plate and frame filter press for pressure filtration, and obtain a filter cake with a solid content of 80%:

[0045] Step 4, then put the above-mentioned filter cake and 140 kg of propylene glycol methyl ether solvent together into the reactor for mixing and dispersing for 0.5 hours, seal the reactor, and raise the temperature of the...

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PUM

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Abstract

The invention discloses a preparation method of a water-based high flash aluminum pigment for automobiles. The method comprises the steps of putting spherical aluminum powder, steel balls as grinding mediums, environmentally friendly solvent oil, oleic acid or erucic acid, and a surfactant into a ball mill, sealing the ball mill, performing ball milling, discharging with the environmentally friendly solvent oil, conveying the materials into a vibrating sieve through a pipeline to sieve, removing screen tailings, performing filter pressing to obtain filter cakes with the solid content being of 80 percent, putting the filter cakes and alcohol or ether solvents with good water compatibility into a reactor for mixing and dispersing, sealing the reactor, increasing the temperature under the protection of inert gases, then dropping water-soluble high polymer monomers and azo-initiators, increasing the temperature after the dropping is finished, holding the temperature, discharging, and performing filter pressing to obtain finished products. The method has the advantages that the environmental protection effect is good; the coating is tight, and a coating layer is difficult to be damaged; the water solubility is good, and the pigment can be directly diluted with water; and the pigment is easy to dissolve in water-based automobile paint systems, and is beneficial to the dispersion of the aluminum pigment.

Description

technical field [0001] The invention relates to a preparation method of metallic flash paint for automobiles, in particular to a preparation method of water-based high flash aluminum pigments for automobiles. Background technique [0002] Traditionally, natural color topcoats are used for automotive topcoats, but in the past two decades, more and more metal flash basecoats and finish coatings have been used as a supporting system, because of its bright and dynamic metallic color, The unpredictable corner-following effect is deeply loved by the market. At present, more than half of the cars have adopted metallic flash paint. [0003] Automobile painting is one of the most serious sources of pollution in the automobile manufacturing industry, and it is a major contributor to energy consumption, water consumption and emissions of volatile organic compounds (VOC). In each process, the amount of VOC in metallic glitter base paints by different companies is the largest, accountin...

Claims

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Application Information

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IPC IPC(8): C09C1/64C09C3/04C09C3/08C09D7/12
Inventor 董前年朱双单
Owner HEFEI SUNRISE PIGMENTS
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