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Method for treating adhesive before coating and aluminium alloy part

A technology for adhesives and metal parts, applied in the field of aluminum alloy parts, can solve problems such as difficult to conform, extremely high bonding strength and bonding durability

Inactive Publication Date: 2006-05-24
JAPAN BRAKE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this metal surface pretreatment agent composition is used for the purpose of pretreatment of adhesive coating, it is difficult to meet the application that requires extremely high adhesive strength and adhesive durability in the treatment using only silane compounds

Method used

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  • Method for treating adhesive before coating and aluminium alloy part
  • Method for treating adhesive before coating and aluminium alloy part
  • Method for treating adhesive before coating and aluminium alloy part

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0057] Production Example 1 Preparation of Surface Treatment Liquid

[0058]Add 23.7gBTSE (1,2-bis(trimethoxysilyl)ethane) to the mixed solution of 9.7g ethanol, 0.075g acetic acid and 36.61g deionized water, and stir at room temperature for 3 days to obtain a transparent solution ( a). Next, 11.63gAPS (3-aminopropyltriethoxysilane: KBE-903 manufactured by Shin-Etsu Chemical Co., Ltd.) was added to a mixed solution of 165.2g deionized water and 2.95g acetic acid, and stirred at room temperature for 2 hours to obtain a solution ( b). The above solution (a) and solution (b) were mixed and stirred for 1 hour to obtain a surface treatment solution.

Embodiment 1

[0060] A brake shoe (aluminum die-casting) manufactured by Nippon Brake Co., Ltd. was used as the object to be processed. Using a 2% by mass solution of SURFCLEANER 53 (a degreasing agent manufactured by Nippon Paint Co., Ltd.), the brake shoe was dipped at 50° C. for 2 minutes. After washing with tap water, use H containing 200 ppm Zr 2 ZrF 6 , pH of 4.0 chemical treatment solution, immersion treatment for 2 minutes. After washing with tap water, immersion treatment was performed four times for 30 seconds each using a 20% by mass solution of the surface treatment liquid obtained in Production Example 1 whose pH was adjusted to 6. The obtained brake shoe was dried at 160° C. for 5 minutes. Zr and Si contained in the film obtained from the surface treatment liquid were respectively measured using a fluorescent X-ray apparatus (manufactured by Rigaku). The results are shown in Table 1.

[0061] The two pre-treated brake shoes and the friction lining A and friction lining B ...

Embodiment 2 and 3

[0064] Except for changing the number of immersion treatments with the surface treatment liquid shown in Table 1, brake shoes were prepared in the same manner as in Example 1, and evaluated.

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Abstract

The invention provides a pretreatment method for adhesive coating, which does not use harmful heavy metals such as chromium, can improve the adhesiveness of the subsequent coated adhesive and metal, and can improve the adhesion between the metal and other parts to be bonded strength and bond durability. The present invention relates to a pretreatment method for adhesive coating of metal parts, the method comprising the following steps (I) and (II), in the step (I), using at least one zirconium fluoro complex and / or Or the chemical treatment solution of titanium fluoride complex to treat the object to be treated; in the process (II), the surface treatment solution containing the hydrolyzed polycondensate of (A) and (B) is coated, and the (A) is based on At least one crosslinking silane coupling agent represented by formula (1) or its hydrolyzed polycondensate; (B) is at least one adhesion-promoting silane coupling agent represented by formula (2) on the right or its hydrolyzed condensation polymer.

Description

technical field [0001] The present invention relates to an adhesive (adhesive) coating pretreatment method and an aluminum alloy component. Background technique [0002] Metal-to-metal, or metal-to-nonmetal bonding is usually bonded with an adhesive. For example, a brake shoe used in a drum brake of an automobile, a bicycle, etc. is formed by bonding a brake shoe main body and a friction lining (brake lining) with an adhesive. The material of the main body of the brake shoe is usually metal. As a friction lining, a material formed by mixing non-metallic filaments and a thermosetting resin binder (binder) is usually used, and the two are bonded together by an adhesive to form a product. hooves. [0003] The bonded part of the brake shoe is repeatedly subjected to extremely heavy loads, and is exposed to heat generated by friction, wind and rain, etc. Since it is used in a harsh environment, it is required to have bonding strength and bonding durability. [0004] When using...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J5/02
Inventor 蓬原正伸岛仓俊明桥本爱季坂田隆夫柿沼贤司福田利一
Owner JAPAN BRAKE IND CO LTD
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