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Magnesium alloy and polyphenylene sulfide plastic direct bonding method

A polyphenylene sulfide and magnesium alloy technology, applied in the direction of electrolytic organic material coating, etc., can solve problems such as being unsuitable for large-area plastic and metal bonding, affecting the bonding performance of plastic and metal, and not specifically mentioning magnesium alloy bonding. The effect of tight bonding, easy promotion and application, and stable quality

Inactive Publication Date: 2008-05-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method solves the problem of harmfulness to the environment in the process of bonding plastic and metal through adhesives, it is difficult to ensure the accuracy of the pasting position in the process of pasting the solid film in this method, and it is not suitable for large-area plastic and metal bonding. At the same time, this method only refers to stainless steel and aluminum alloys, and is not applicable to magnesium alloys.
Chinese Invention Patent Application No. 91108158.5 discloses a method of depositing an extremely thin layer of metal copper on the surface of the plastic to increase the surface energy of the plastic, and then using an adhesive to achieve a tight bond between the plastic and the metal after copper plating. However, this The method still needs to use an adhesive that is harmful to the environment, and the coating and curing process of the adhesive will affect the bonding performance between plastics and metals, and this method does not specifically mention the bonding of magnesium alloys

Method used

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  • Magnesium alloy and polyphenylene sulfide plastic direct bonding method
  • Magnesium alloy and polyphenylene sulfide plastic direct bonding method
  • Magnesium alloy and polyphenylene sulfide plastic direct bonding method

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Experimental program
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Effect test

Embodiment 1

[0038] The substrate metal used for the organic coating is a Mg-Al-Zn series magnesium alloy with a size of 50×10×1 (mm).

[0039] Step 1: Organic Coating

[0040] Firstly, the magnesium alloy samples were pre-polished, then ultrasonically degreased in acetone solution for 30 minutes at a temperature of 30°C, and then organic coating was performed. The specific process conditions and steps are as follows:

[0041] 1. The organic coating adopts a three-electrode working method, the working electrode is a magnesium alloy sample, the auxiliary electrode is a stainless steel sheet, and the reference electrode is a saturated calomel electrode (SCE);

[0042] 2. The electrolyte solution used in organic coating is composed of the following substances:

[0043]

[0044] 2mmol / L triazazine organic compound salt containing the above functional groups, 1mol / L sodium borate, and the rest distilled water;

[0045] 3. The organic coating conditions are as follows:

[0046] The pH valu...

Embodiment 2

[0051] The substrate metal used for the organic coating is a Mg-Zn series magnesium alloy with a size of 50×10×1 (mm).

[0052] Step 1: Organic Coating

[0053] Firstly, the magnesium alloy samples were pre-polished, then ultrasonically degreased in acetone solution for 30 minutes at a temperature of 30°C, and then organic coating was performed. The specific process conditions and steps are as follows:

[0054] 1. The organic coating adopts a three-electrode working method, the working electrode is a magnesium alloy sheet, the auxiliary electrode is a stainless steel sheet, and the reference electrode is a saturated calomel electrode (SCE);

[0055] 2. The electrolyte solution used in organic coating is composed of the following substances:

[0056]

[0057] 10mmol / L triazazine organic compound salt containing the above functional groups, 2mol / L sodium hydroxide, and the rest are distilled water;

[0058] 3. The organic coating conditions are as follows:

[0059] The pH ...

Embodiment 3

[0064] The substrate metal used for the organic coating is a Mg-Al-Mn series magnesium alloy with a size of 50×10×1 (mm).

[0065] Step 1: Organic Coating

[0066] Firstly, the magnesium alloy samples were pre-polished, then ultrasonically degreased in acetone solution for 30 minutes at a temperature of 30°C, and then organic coating was performed. The specific process conditions and steps are as follows:

[0067] 1. The organic coating adopts a three-electrode working method, the working electrode is a magnesium alloy sheet, the auxiliary electrode is a stainless steel sheet, and the reference electrode is a saturated calomel electrode (SCE);

[0068] 2. The electrolyte solution used in organic coating is composed of the following substances:

[0069]

[0070] 12mmol / L triazazine organic compound salt containing the above-mentioned functional groups, 5mol / L sodium nitrite, and the rest are distilled water;

[0071] 3. The organic coating conditions are as follows:

[00...

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Abstract

The invention provides a method of direct bonding between magnesium alloy and polyphenylene sulfide plastic. The method organically coats film by a working type of three electrodes; electrolyte solution contains triazine-typed organic compound salt of 0.5 to 30mmol / L, supporting electrolyte of 0.1 to 5mol / L; the pH value of the coating liquid is 8 to 13; the current density is 0.5 to 5 A / m<2>; the filming time is 3 to 50 minutes; the filming temperature is 5 to 30 DEG C; the thickness of the organic coating is controllable in the range of 10 to 80nm along with the current density and the filming time change; the magnesium alloy workpiece processed through the organic filming disposal is arranged in an injection die; PPS raw material is injected by a nozzle in an enclosed die where the magnesium alloy plate is arranged in, thus obtaining the magnesium alloy / PPS butting part tightly butted. The invention has the advantages of simple process, environment protection, implementing direct and compact combination between composite magnesium alloy part and polyphenylene sulfide plastic, stable quality, and further enlarging the application range of magnesium alloy.

Description

technical field [0001] The invention relates to a bonding method and surface modification technology of metal materials and polyphenylene sulfide plastics (PPS), in particular to a method for realizing the direct bonding of magnesium alloys and engineering plastics through functional nanometer organic functional films. Background technique [0002] With today's increasingly prominent energy issues, energy conservation and environmental protection are the main directions of today's technological development. Magnesium alloy is an important lightweight metal structural material. It is considered as a green structural material in the 21st century because of its high specific strength, specific stiffness, good formability and easy recycling. At the same time, plastic is also an important lightweight material, which is widely used in people's daily life. As one of the special engineering plastics, polyphenylene sulfide (PPS) has excellent high temperature stability, flame retarda...

Claims

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Application Information

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IPC IPC(8): B29C45/14C25D9/02
Inventor 康志新叶奇简炜炜邵明李元元
Owner SOUTH CHINA UNIV OF TECH
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