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Process for auxiliary agent preparation and direct bonding of aluminum alloy and PP

An aluminum alloy and -PP technology, which is applied in the field of auxiliary agent configuration and aluminum alloy-PP direct bonding process, can solve the problems of less mechanical interlocking and low probability of polymer materials entering aluminum alloy holes, and achieve improved affinity Good waterproof performance and improved bonding strength

Pending Publication Date: 2019-07-30
JINHUA VOCATIONAL TECH COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned process, the probability of polymer material entering the aluminum alloy hole due to direct injection molding is not high, and the formation of mechanical interlock is relatively small.

Method used

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  • Process for auxiliary agent preparation and direct bonding of aluminum alloy and PP
  • Process for auxiliary agent preparation and direct bonding of aluminum alloy and PP
  • Process for auxiliary agent preparation and direct bonding of aluminum alloy and PP

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An auxiliary agent configuration and an aluminum alloy-PP direct bonding process, comprising the following steps:

[0035] Step 1: Put the 2A12 aluminum alloy specimen after surface micro corrosion treatment into the ultrasonic working tank. The initial state of the aluminum alloy specimen is as follows: figure 1 As shown, the water temperature does not exceed 25°C, the ultrasonic probe uses 1000Hz, press figure 2 The following operations are performed as shown; the frequency of the ultrasonic probe is treated for 10 minutes to remove the air bubbles in the microscopic holes on the surface of the aluminum alloy test piece, and an auxiliary agent is added to the ultrasonic working tank. The auxiliary agent components include n-octyltriethoxysilane and octyl Trimethoxysilane, the ratio of its parts by mass is 3:5, the volume ratio of the auxiliary agent to the water in the ultrasonic working tank is 1:5, the ultrasonic probe continues to work and stir according to the fr...

Embodiment 2

[0045] An auxiliary agent configuration and an aluminum alloy-PP direct bonding process, comprising the following steps:

[0046] Step 1: Put the 2A12 aluminum alloy specimen after surface micro corrosion treatment into the ultrasonic working tank. The initial state of the aluminum alloy specimen is as follows: figure 1 As shown, the water temperature does not exceed 25°C, the ultrasonic probe uses 1000Hz, press figure 2 The following operations are performed as shown; the frequency of the ultrasonic probe is treated for 10 minutes to remove the air bubbles in the microscopic holes on the surface of the aluminum alloy test piece, and an auxiliary agent is added to the ultrasonic working tank. The auxiliary agent components include n-octyltriethoxysilane and octyl Trimethoxysilane, the ratio of its parts by mass is 3: 7, the volume ratio of the auxiliary agent to the water in the ultrasonic working tank is 1: 5, and the ultrasonic probe continues to work and stir according to th...

Embodiment 3

[0056] An auxiliary agent configuration and an aluminum alloy-PP direct bonding process, comprising the following steps:

[0057] Step 1: Put the 2A12 aluminum alloy specimen after surface micro corrosion treatment into the ultrasonic working tank. The initial state of the aluminum alloy specimen is as follows: figure 1 As shown, the water temperature does not exceed 25°C, the ultrasonic probe uses 1000Hz, press figure 2 The following operations are performed as shown: the frequency of the ultrasonic probe is treated for 10 minutes, the air bubbles in the microscopic pores on the surface of the aluminum alloy specimen are removed, and additives are added to the ultrasonic working tank. The additive components include n-octyltriethoxysilane and octyl Trimethoxysilane, the ratio of its parts by mass is 1:3, the volume ratio of the auxiliary agent to the water in the ultrasonic working tank is 1:5, the ultrasonic probe continues to work and stir according to the frequency of 100...

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Abstract

The invention discloses a process for auxiliary agent preparation and direct bonding of aluminum alloy and PP. The technical scheme is that the process mainly comprises the steps that first, an aluminum alloy test piece through micro-corrosion treatment on the surface is put into a water tank, an ultrasonic probe and auxiliary agents are put into the water tank, and then a hydrophobic film is generated on the surface of the aluminum alloy test piece; second, the aluminum alloy test piece in the first step is taken out and aired, the surface is coated with a layer of octyltrimethoxysilane through micro-corrosion treatment, and then the ultrasonic probe is vibrated for 20 minutes and then wiped to dry; and third, injection molding is carried out. The auxiliary agents are n-octyltriethoxysilane and octyltrimethoxysilane, so that the affinity of PP resin to the aluminum alloy is improved; the micro holes of the aluminum alloy test piece are coated with the layer of octyltrimethoxysilane, and during injection molding, the octyltrimethoxysilane boils at high temperature; and due to the good bonding property of the octyltrimethoxysilane and PP molecules, the boiling process is favorable for drawing the PP molecules into the micro holes.

Description

technical field [0001] The invention relates to a bonding process, more specifically to an auxiliary agent configuration and an aluminum alloy-PP direct bonding process. Background technique [0002] In recent years, in the development of metal composite materials, aluminum alloy composite materials have the characteristics of light weight, small thermal expansion, high thermal stability, excellent electrical conductivity and thermal conductivity, which make them develop particularly rapidly. [0003] In order to improve the bonding strength between aluminum alloy and other materials, it is usually necessary to treat the surface. At present, an integrated molding technology of aluminum alloy and resin composition is disclosed, and the metal to be combined is treated with lye, acid, Treated with weak acid of ester amino acid, rinsed with water, dried and injected. Numerous nanometer-level pores are formed on the surface of the treated aluminum alloy, and the injected resin e...

Claims

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Application Information

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IPC IPC(8): B29C45/14C23F1/20C23G1/22
CPCB29C45/14B29C2045/14868C23F1/20C23G1/22
Inventor 徐振宇王桂峰
Owner JINHUA VOCATIONAL TECH COLLEGE
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