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Solvent priming paint special for 3C (China Compulsory Certification) product magnesium-aluminum alloy material and preparation method thereof

A magnesium-aluminum alloy, solvent-based technology, applied in the field of solvent-based primers and its preparation, can solve the problems of expensive magnesium-aluminum alloy materials, not easily scrapped, and cracking of the paint film, and achieve good interlayer adhesion and excellent water resistance The effect of cooking performance

Active Publication Date: 2013-04-24
东莞大宝化工制品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because of its high porosity and easy water absorption, it is difficult to achieve excellent water boiling resistance, so it has high performance requirements for the primer in direct contact with it.
[0003] Although the traditional primers for magnesium-aluminum alloys can improve some properties, there are still some shortcomings: on the one hand, due to the good high-temperature resistance of magnesium-aluminum alloys, traditional magnesium-aluminum alloy primers are mostly designed for high-temperature baking Type products generally require a baking temperature of 140-160°C, but they cannot meet the needs of customers in low-temperature production lines; The magnesium-aluminum alloy primer, due to the high baking temperature, after multiple coats, the paint film is prone to cracking and the adhesion between layers is poor.

Method used

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  • Solvent priming paint special for 3C (China Compulsory Certification) product magnesium-aluminum alloy material and preparation method thereof
  • Solvent priming paint special for 3C (China Compulsory Certification) product magnesium-aluminum alloy material and preparation method thereof
  • Solvent priming paint special for 3C (China Compulsory Certification) product magnesium-aluminum alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A special solvent-based black primer for magnesium-aluminum alloy materials of 3C products, calculated by weight percentage, including the following substances: saturated polyester (polymer polyester resin) 65%, pigment (carbon black) 3%, dispersant 1.8% , anti-settling agent (polyethylene wax) 1%, filler (aluminum tripolyphosphate) 10%, adhesive agent (bisphenol A epoxy resin) 1%, leveling agent (modified polysiloxane) 2%, even Joint agent (epoxy silane cocondensate) 0.5%, solvent 15.7%.

[0029] The method for preparing a special solvent-based black primer for magnesium-aluminum alloy materials of 3C products comprises the following preparation steps:

[0030] Step A, first mix the dispersant, pigment, 35% saturated polyester and 2% solvent of the amount, and stir at a high speed for 12 minutes at 1200rpm with a stirrer to obtain a uniformly dispersed mixed slurry I, then use sand The mill grinds the mixed slurry I to a fineness of less than 10 microns to obtain the ...

Embodiment 2

[0039] A special solvent-based black primer for magnesium-aluminum alloy materials of 3C products, calculated by weight percentage, including the following substances: saturated polyester (polymer polyester resin) 52%, pigment (carbon black) 20%, dispersant 1% , anti-settling agent (polyethylene wax) 3%, filler (aluminum tripolyphosphate) 5%, adhesive agent (bisphenol A epoxy resin) 2%, leveling agent (modified polysiloxane) 5%, even Joint agent (epoxy silane cocondensate) 2%, solvent 10%.

[0040] The method for preparing the solvent-based black primer dedicated to the magnesium-aluminum alloy material of the 3C product includes the following preparation steps:

[0041] Step A, first mix the dispersant, pigment, 20% saturated polyester and 2% solvent of the amount, and stir at a high speed for 15 minutes at 1000rpm with a stirrer to obtain a uniformly dispersed mixed slurry I, and then use sand The mill grinds the mixed slurry I to a fineness of less than 10 microns to obtai...

Embodiment 3

[0048] A special solvent-based black primer for magnesium-aluminum alloy materials of 3C products, calculated by weight percentage, including the following substances: saturated polyester (polymer polyester resin) 59.5%, pigment (carbon black) 10%, dispersant 1.5% , anti-settling agent (polyethylene wax) 2.5%, filler (aluminum tripolyphosphate) 8%, adhesive (bisphenol A epoxy resin) 0.5%, leveling agent (modified polysiloxane) 3.5%, even Joint agent (epoxy silane cocondensate) 1%, solvent 5%.

[0049] The method for preparing the solvent-based black primer dedicated to the magnesium-aluminum alloy material of the 3C product includes the following preparation steps:

[0050] Step A, first mix the dispersant, pigment, 29.5% saturated polyester and 2% solvent of the amount, and stir at a high speed for 13 minutes at 1500rpm with a stirrer to obtain a uniformly dispersed mixed slurry I, then use sand The mill grinds the mixed slurry I to a fineness of less than 10 microns to obta...

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Abstract

The invention relates to the technical field of solvent priming paints, in particular to a solvent priming paint special for a 3C (China Compulsory Certification) product magnesium-aluminum alloy material and a preparation method thereof. The solvent priming paint comprises substances such as saturated polyester, a pigment, a dispersing agent, an anti-settling agent, a filling, an adhesive agent,a flattening agent, a coupling agent, a solvent and the like, is prepared by performing procedures such as batch mixing, stirring, grinding and the like on different substances in different quantity relative ratios, can meet the requirements of customers on high-low temperature production lines, can be repeatedly coated and remade without causing cracking of a paint film, and has high ply adhesion and particularly high boiling water boiling resistance.

Description

technical field [0001] The invention relates to the technical field of solvent-based primers, in particular to a special solvent-based primer for magnesium-aluminum alloy materials of 3C products and a preparation method thereof. Background technique [0002] As we all know, magnesium-aluminum alloy materials are widely used in high-end 3C products such as notebook computers, mobile phones, and digital cameras due to their light weight, high temperature resistance, fast heat dissipation, and high strength (the so-called 3C products refer to computers (Computers), communications ( Communication) and Consumer Electronics (the abbreviation of the three types of electronic products). And because of its high porosity and easy water absorption, it is difficult to achieve excellent water boiling resistance, so it has higher performance requirements for the primer in direct contact with it. [0003] Although the traditional primers for magnesium-aluminum alloys can improve some pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D7/12
Inventor 陈贺生邱晓宏
Owner 东莞大宝化工制品有限公司
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