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Magnesium-aluminum metal coating composition and preparation method thereof

A metal coating and composition technology, which is applied in the field of magnesium-aluminum metal coating composition and preparation, can solve the problems of irregular protrusions on the coating surface, fast solvent volatilization, and insufficient leveling time, etc., to reduce surface tension , good leveling, good leveling effect

Inactive Publication Date: 2021-10-01
山东华芯环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the existing magnesium-aluminum metal coating composition is applied to the surface of the substrate, the leveling time is not enough, and the solvent volatilizes too quickly, which easily leads to irregular round spot-like protrusions on the coating surface, making the touch feel rough and inconvenient to use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix epoxy resin and polyacrylate, the mass ratio between epoxy resin and polyacrylate is 1:0.4, mix by ultrasonic for 6 minutes, and then react at 80°C for 40 minutes to obtain modified epoxy resin.

[0026] Put the phenolic resin and polysiloxane into ethanol, the mass ratio between phenolic resin and polysiloxane is 1:0.2, so that the amount of ethanol is 4 times of the sum of the total mass of phenolic resin and polysiloxane, Mix evenly, then allow the temperature to react at 80° C. for 60 minutes, and then recover ethanol through vacuum distillation to obtain a modified epoxy resin.

[0027] Make aluminum and magnesium pass through a 150 mesh sieve, mix the sieved 60g, magnesium 10g and coupling agent 8g, so that aluminum and magnesium are fully mixed with the coupling agent, and the coupling agent is a titanate coupling agent , reacted at 60°C for 40 minutes to obtain the preparatory material;

[0028] Make the preparatory material react at 120°C and 3MPa for 20 m...

Embodiment 2

[0031] The epoxy resin and polyacrylate are mixed, the mass ratio between epoxy resin and polyacrylate is 1:0.45, ultrasonically mixed for 7 minutes, and then reacted at 90°C for 50 minutes to obtain the modified epoxy resin.

[0032] Make the phenolic resin and polysiloxane into ethanol, the mass ratio between phenolic resin and polysiloxane is 1:0.2, so that the amount of ethanol is 5 times of the sum of the total mass of phenolic resin and polysiloxane, Mix evenly, then allow the temperature to react at 85° C. for 70 minutes, and then recover ethanol through vacuum distillation to obtain a modified epoxy resin.

[0033] Make aluminum and magnesium pass through a 200-mesh sieve, and mix the sieved aluminum 65g, magnesium 15g and coupling agent 9g, so that the aluminum and magnesium are fully mixed with the coupling agent, and the coupling agent is titanate coupling agent, and reacted at 70°C for 50 minutes to obtain the preparatory material;

[0034] Make the preparatory ma...

Embodiment 3

[0037] The epoxy resin and polyacrylate are mixed, the mass ratio between epoxy resin and polyacrylate is 1:0.4, ultrasonically mixed for 7 minutes, and then reacted at 90°C for 50 minutes to obtain the modified epoxy resin.

[0038] Make the phenolic resin and polysiloxane into ethanol, the mass ratio between phenolic resin and polysiloxane is 1:0.2, so that the amount of ethanol is 5 times of the sum of the total mass of phenolic resin and polysiloxane, Mix evenly, then allow the temperature to react at 85° C. for 70 minutes, and then recover ethanol through vacuum distillation to obtain a modified epoxy resin.

[0039] Make aluminum and magnesium pass through a 200-mesh sieve, mix 70g of sieved aluminum, 20g of magnesium and 10g of coupling agent, so that aluminum and magnesium are fully mixed with coupling agent, and the coupling agent is titanate coupling agent, and reacted at 70°C for 50 minutes to obtain the preparatory material;

[0040] Make the preparatory material ...

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PUM

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Abstract

The invention is applicable to the technical field of coatings, and provides a magnesium-aluminum metal coating composition and a preparation method thereof. The magnesium-aluminum metal coating composition comprises the following components: aluminum, magnesium, modified epoxy resin, modified phenolic resin, a defoaming agent, a coupling agent, a curing agent and a filler. According to the embodiment of the invention, the epoxy resin is modified by polyacrylate, so that the epoxy resin has good wettability, and the coating can be conveniently wetted and adhered to the surface of a base material; according to the embodiment of the invention, the phenolic resin is modified through polysiloxane, so that the phenolic resin has good leveling property, the obtained metal coating composition has good wettability and leveling property, the surface tension of the metal coating composition on the surface of a matrix is reduced, leveling of the metal coating composition on the surface of the matrix is facilitated, and protrusions are avoided; the problem that round dotted irregular protrusions are prone to occurring when an existing magnesium-aluminum metal coating composition is smeared to the surface of a base body is solved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a magnesium-aluminum metal coating composition and a preparation method. Background technique [0002] Aluminum alloy has low density, but relatively high strength, can be processed into various materials, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is widely used. Some aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. The aluminum-magnesium intermetallic compound has good corrosion resistance, so that the aluminum-magnesium intermetallic compound can be applied to the coating field, and can provide good protection for the base material. [0003] However, when the existing magnesium-aluminum metal coating composition is applied to the surface of the substrate, the leveling time is insufficient and the solvent volatilizes too quickly, which easily lea...

Claims

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Application Information

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IPC IPC(8): C09D161/06C09D183/04C09D163/00C09D133/04C09D7/62C09D7/61
CPCC09D161/06C09D7/62C09D7/61C08K2003/265C08K2003/0812C08L83/04C08L63/00C08L33/04C08K9/04C08K3/08C08K3/26C08K3/34C08K3/346
Inventor 许志强
Owner 山东华芯环保科技有限公司