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Acrylate adhesive for 180-DEG-C finished-automobile electrophoretic process

An acrylic and adhesive technology, applied in the direction of adhesives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc., can solve the problems of reduced bonding strength and inapplicability of products, and achieve good bonding strength Effect

Active Publication Date: 2015-06-10
GUANGZHOU HUITIAN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gradually, a variety of new alloy materials and polymer materials began to be applied in large quantities in the vehicle industry. However, the old-fashioned welding and rivets can no longer meet the current development trend, so people began to use adhesive bonding to replace the past process, and acrylic Ester adhesives attract attention due to their excellent adhesion to various materials
However, the vehicle needs to undergo electrophoresis at 180 °C after the frame is assembled, and the temperature resistance limit of conventional acrylic is 120 °C to 150 °C, and the bonding strength of the product after vehicle electrophoresis is significantly reduced; thus, conventional acrylic adhesives are not suitable In the automotive industry, it is still an urgent technical problem to seek an acrylic adhesive with high temperature resistance and high bonding strength after electrophoresis

Method used

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  • Acrylate adhesive for 180-DEG-C finished-automobile electrophoretic process
  • Acrylate adhesive for 180-DEG-C finished-automobile electrophoretic process
  • Acrylate adhesive for 180-DEG-C finished-automobile electrophoretic process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Table 1:

[0025]

[0026] In this example, the oxidizing agent component and the reducing agent component were prepared at a volume ratio of 1:10 to prepare an acrylate adhesive.

[0027] 1. Preparation method:

[0028] (1) Oxidant component: put the acrylate monomer methyl methacrylate into the reaction kettle, add the elastomer MBS and stir until the elastomer is completely dissolved, then add epoxy resin and stabilizer oxalic acid and stir until the mixture is uniform; Finally, the initiator cumene hydroperoxide is added and stirred until the mixture is uniform, and the preparation is completed after vacuuming.

[0029] (2) Reducing agent component: put acrylate monomer methyl methacrylate, 2-hydroxyethyl methacrylate phosphate, and methacrylic acid into the reaction kettle, add elastomer chlorosulfonated polyethylene and MBS, and carry out Stir until completely dissolved; then add accelerator diethylamine, transition metal org...

Embodiment 2

[0037] Table 2:

[0038]

[0039] The preparation method and performance test of this example are the same as those of Example 1; in this example, the acrylate adhesive is prepared with a volume ratio of the oxidizing agent component and the reducing agent component being 1:10.

Embodiment 3

[0041] table 3:

[0042]

[0043] The preparation method and performance test of this example are the same as those of Example 1; in this example, the acrylate adhesive is prepared with a volume ratio of the oxidizing agent component and the reducing agent component being 1:10.

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PUM

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Abstract

The invention relates to an acrylate adhesive for a 180-DEG-C finished-automobile electrophoretic process. The adhesive is a double-component adhesive: (1) an oxidizing agent consists of the following components by weight percent: 25 to 60 percent of acrylate monomer at least comprising one vinyl group, 5 to 50 percent of elastomer, 0.5 to 20 percent of initiator, 0.1 to 5 percent of stabilizing agent and 0 to 30 percent of epoxy resin; (2) a reducing agent comprises the following components by weight percent: 25 to 60 percent of acrylate monomer at least comprising one vinyl group, 0 to 25 percent of methacrylic acid, 0 to 50 percent of elastomer, 1 to 10 percent of accelerant, 0.1 to 5 percent of stabilizing agent, 0.01 to 2 percent of transitional metal organic salt and 5 to 25 percent of modified additive; the volume ratio of the oxidizing agent component to the reducing agent component is 1:10. According to the acrylate adhesive, by optimizing the formula and adding modified additive into the formula, the acrylate adhesive can tolerate 180-DEG C high-temperature electrophoresis for 30 minutes, and the bonding strength after the electrophoresis is still good.

Description

technical field [0001] The invention relates to the technical field of two-component acrylic adhesives, in particular to an acrylic adhesive used in the electrophoresis process of a whole vehicle at 180°C. Background technique [0002] Today, as the smog problem is getting worse, people are paying more and more attention to the importance of environmental protection. Vehicle exhaust emissions are a major cause of smog. Therefore, low fuel consumption and low emissions have become the development trend of the vehicle industry. Gradually, a variety of new alloy materials and polymer materials began to be applied in large quantities in the vehicle industry. However, the old-fashioned welding and rivets can no longer meet the current development trend, so people began to use adhesive bonding to replace the past process, and acrylic Ester adhesives attract attention for their excellent adhesion to various materials. However, the vehicle needs to undergo electrophoresis at 180 ...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J4/06C09J11/06
Inventor 刘苏宇史襄桥张银华
Owner GUANGZHOU HUITIAN FINE CHEM