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Manufacturing method for composite member

A manufacturing method and technology for composite parts, applied in the field of composite parts manufacturing, can solve problems such as interface peeling and inability to bond

Inactive Publication Date: 2019-06-14
SUMITOMO RIKO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the state where there is a carbide film on the surface of the aluminum die-casting part, even if it is bonded to the polymer part, the polymer part will delaminate at the interface, and the two cannot be bonded sufficiently

Method used

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  • Manufacturing method for composite member
  • Manufacturing method for composite member
  • Manufacturing method for composite member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Prepare the organosilicon material in the following manner. To 100 parts by mass of liquid silicone rubber (vinyl group-containing dimethyl polysiloxane: manufactured by Gelest, "DMS-V35"), add 1 part by mass of p-styryltrimethoxy as an adhesive component. base silane (manufactured by Shin-Etsu Chemical Co., Ltd.), and mixed for 30 minutes by a planetary mixer. To this mixture, 4 parts by mass of a hydrosilane crosslinking agent (hydrosilyl group-containing dimethylpolysiloxane: manufactured by Gelest, "HMS-151") was added and further mixed for 30 minutes, and then the pressure was reduced. Degassing, thereby preparing a liquid silicone material.

[0059] (2) A rectangular plate-shaped member (aluminum die-casting member) produced by die-casting ADC12 of an Al—Si—Cu-based alloy was prepared. The size of the plate-shaped member was 60 mm on the long side, 45 mm on the short side, and 2.0 mm in thickness.

[0060] First, laser processing was performed on the entire...

Embodiment 2

[0064] A test piece was produced in the same manner as in Example 1 with respect to the entire one surface of the same plate-shaped member as in Example 1, except that the conditions were changed and secondary laser processing was performed. The conditions for the first laser treatment are moving speed: 400mm / sec, laser irradiation density: 0.8J / mm 2 , the conditions for the second laser treatment are moving speed: 100mm / sec, laser irradiation density: 5.0J / mm 2 . The first laser treatment corresponds to the removal process in the present invention, and the second laser treatment corresponds to the melting process in the present invention.

[0065] In Example 2, a plurality of similarly laser-processed plate-shaped members were produced, and immediately after and after laser-processing (melting process) was performed using the above-mentioned plurality of plate-shaped members, as described later. The water contact angle of the laser-processed surface was measured every time ...

Embodiment 3

[0067] In the same manner as in Example 2, a test piece was prepared in the same manner as in Example 1, except that the entire one surface of the plate-shaped member was subjected to secondary laser processing, and then microwave plasma treatment was further performed in a vacuum. Microwave plasma treatment was performed as follows. First, the plate-shaped member is arranged in a vacuum container, and the inside of the vacuum container is brought into a reduced pressure state of 0.5 Pa or less. Next, oxygen gas was supplied into the vacuum vessel to form an oxygen atmosphere at a pressure of 10 Pa. In this state, microwave plasma was generated at a frequency of 2.45 GHz and an output of 2 kW, and irradiated for 10 seconds on the entire one surface of the plate-shaped member that had undergone laser processing. In this way, the one surface is activated to generate hydroxyl groups on the surface. The microwave plasma treatment in Example 3 corresponds to the modification proc...

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Abstract

Provided is a manufacturing method for a composite member in which an aluminum die-cast member and a polymer member are strongly bonded as a result of removing a carbide film from the surface of the aluminum die-cast member to produce a homogenized superficial layer. The manufacturing method for a composite member obtained by complexing an aluminum die-cast member and a polymer member, comprises:a melting step for irradiating, with laser light, a joining surface of the aluminum die-cast member to be joined with the polymer member so as to melt a superficial layer of the joining surface; and acomplexing step for integrally molding a polymer material to the joining surface. The manufacturing method for a composite member may include, prior to the melting step, a removal step for removing acarbide film present on the joining surface by irradiating the joining surface with laser light, and may include, after the melting step, a modification step for imparting hydroxyl groups on to the joining surface by irradiating the joining surface with plasma.

Description

technical field [0001] The present invention relates to a method for manufacturing a composite part in which an aluminum die-cast part and a polymer part are composited. Background technique [0002] For housings of electronic control devices such as engine control units mounted in automobiles, composite parts are used in which polymer parts made of silicone rubber or the like are bonded to a case that is an aluminum die-cast part. As an aluminum alloy for die casting (die casting), ADC12 of Al—Si—Cu-based alloy, etc. are known. However, there is a problem that an aluminum die-cast part obtained by die-casting an aluminum alloy such as ADC12 has poor adhesion to a polymer part. [0003] Various factors such as organic fouling can be considered as factors that hinder adhesion, and among them, the presence of a carbide film formed on the surface of an aluminum die-cast part becomes a problem. It is considered that the carbide film is formed by the residue of a release agent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29C65/70
CPCB23K26/0006B29C45/14311B29K2083/00B29K2705/02B23K26/354B23K26/3568B23K26/355B23K2103/10B23K2103/42B23K31/12B23K26/324B23K26/402B23K26/323B23K26/244B23K26/60B23K2101/36B23K2103/18B23K26/361B23K2101/34B23K31/125B29C45/0001B29C45/14B29C2045/14877B29C2045/14885G01N23/22
Inventor 冈下胜巳林翔太三轮恭之篠崎卓宏石熊祐子
Owner SUMITOMO RIKO CO LTD
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