Method for enhancing interface properties of metal/epoxy resin composite material by using dendrimers

A technology of epoxy resin and composite materials, which is applied in the direction of surface coating liquid device, pretreatment surface, coating, etc., can solve the problems of poor stability of metal/epoxy resin composite materials, etc., and achieve unique rheological properties, The effect of enhancing interface performance and improving interface strength

Inactive Publication Date: 2012-03-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor stability of the metal / epoxy resin composite material produced by the existing method, the present invention provides a method for enhancing the interface performance of the metal / epoxy resin composite material

Method used

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  • Method for enhancing interface properties of metal/epoxy resin composite material by using dendrimers
  • Method for enhancing interface properties of metal/epoxy resin composite material by using dendrimers
  • Method for enhancing interface properties of metal/epoxy resin composite material by using dendrimers

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specific Embodiment approach 1

[0009] Specific embodiment one: the method for enhancing the interfacial properties of metal / epoxy resin composite materials in this embodiment is carried out according to the following steps: one, cleaning the substrate; two, mechanically processing the cleaned substrate; three, mechanically processing the The substrate is oxidized and dried in vacuum; 4. Cover the surface of the substrate treated in step 3 with 0.5 to 4th generation polyamide-amine (PAMAM) dendrimers by soaking, pulling or spin coating, and then React at 20-100°C for 0.5-12h; 5. Alternately wash the substrate treated in step 4 with deionized water and solvent, and then dry it under vacuum at 70-90°C to obtain a metal substrate; 6. Epoxy The resin cured body is coated on the surface of the metal substrate, and under the condition of a pressure of 0.3-0.6MPa, the temperature is raised to 60-80°C and kept for 1-2h, and then the temperature is raised to 120-150°C for 3-6h, and it is strengthened. post-metal / epox...

specific Embodiment approach 2

[0019] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the substrate in step 1 is made of aluminum or titanium. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0020] Specific embodiment 3: The difference between this embodiment and specific embodiments 1 to 2 is that the method for cleaning the substrate in step 1 is to put the substrate into an organic solvent and process it for 5 to 30 minutes under the condition of an ultrasonic frequency of 0.5 to 100 kHz. , wherein the organic solvent is composed of one or more of acetone, methanol or ethyl acetate. Other steps and parameters are the same as those in Embodiments 1 to 2.

[0021] In this embodiment, the surface of the metal substrate is cleaned to remove pollutants on the surface of the substrate.

[0022] In this embodiment, when the organic solvents are a mixture, the organic solvents can be mixed in any ratio.

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Abstract

The invention discloses a method for enhancing interface properties of a metal / epoxy resin composite material, which relates to a method for enhancing interface properties of a metal / epoxy resin composite material. The invention solves the problem of poor stability of the metal / epoxy resin composite material manufactured by the prior method. The method comprises the following steps: (1) rinsing the substrate; (2) mechanically treating the substrate; (3) carrying out oxidation treatment on the substrate, and drying; (4) coating generation polyamide-amine dendrimers on the surface of the substrate; (5) alternately rinsing the substrate with de-ionized water and solvent, and drying to obtain the metal base; (6) and coating an epoxy resin curing agent on the surface of the metal base, and curing at constant temperature to obtain the enhanced metal / epoxy resin composite material. The interface shear strength of the metal / epoxy resin composite material manufactured by the method is 20.7-35.8 MPa, and the stability of the metal / epoxy resin composite material is high.

Description

technical field [0001] The invention relates to a method for enhancing the interfacial properties of metal / epoxy resin composite materials. Background technique [0002] Metals such as aluminum and titanium have the advantages of light weight and corrosion resistance, and have been widely used in various industries. In particular, the urgent need for lightweighting of cars, electronic equipment, and spacecraft has promoted a large number of applications of aluminum alloys and titanium alloys. Layered metal / resin matrix composites, which combine the common advantages of resin matrix composites and metals, also emerged in response to the needs of aerospace. Typical applications of this material are various pressure vessels required in spacecraft and automobiles to store high-pressure liquids and gases. The huge cost of spacecraft launch and possible technical risks require continuous improvement of space pressure vessels in terms of reliability, pressure tolerance, light wei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/16B05D3/00B05D3/12B05D3/10B05D3/02
Inventor 赫晓东梅蕾李宜彬王荣国彭庆宇
Owner HARBIN INST OF TECH
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