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Surface treatment metal, treatment method thereof, metal resin composite body and preparing method thereof

A treatment method and surface treatment technology, applied in the direction of coating, etc., can solve the problems of insufficient depth of nano-holes, low bonding force of injection molding products, small nano-holes, etc., to solve the problem of insufficient bonding force, improve the tensile strength at break Effect

Pending Publication Date: 2019-07-12
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are mainly two methods for manufacturing metal-resin composites in the prior art. One is to use adhesives, which have poor applicability to environments such as acid, alkali and heat, and poor bonding force; the other is the integration of metal and resin compositions. Molding technology, the resin is directly injected on the surface of the surface-treated metal substrate to form a metal-resin composite
Although the second method has strong environmental adaptability, it needs to solve the problems of low bonding force and low stability of injection molding products to improve practicability
[0003] At present, anodic oxidation or electrochemical cathodic treatment is used on the surface of metals (titanium and titanium alloys as examples), and the resulting nanopores are small and the oxide film is very thin, resulting in insufficient depth of nanopores. Low power, low practicality

Method used

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  • Surface treatment metal, treatment method thereof, metal resin composite body and preparing method thereof
  • Surface treatment metal, treatment method thereof, metal resin composite body and preparing method thereof
  • Surface treatment metal, treatment method thereof, metal resin composite body and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Pretreatment: Cut a commercially available 1mm thick titanium plate into rectangular pieces of 450mm*150mm, put it into acetone solution, ultrasonically clean it for 30 minutes, and rinse it with deionized water to obtain a pretreated titanium plate.

[0058] Metal Surface Treatment:

[0059] 1. Put the pretreated titanium sheet in the polishing solution and polish it for 5 minutes. The polishing solution is a mixed acid solution of nitric acid and hydrofluoric acid;

[0060] 2. Anodize the polished titanium sheet at 40V for 15min in 0.30wt% ammonium fluoride in ethylene glycol solution. After testing, there is an oxide layer on the metal surface, such as Figure 1-2 , figure 1 It is the electron microscope picture of the front surface of the oxide layer. It can be seen that the inner diameter of the nanotube is 100nm. figure 2 It is the cross-sectional electron microscope picture of the oxide layer. It can be seen that the tube length is greater than 2um, and the ox...

Embodiment 2

[0067] Pretreatment: Cut a commercially available 1mm thick titanium plate into rectangular pieces of 450mm*150mm, put it into acetone solution, ultrasonically clean it for 30 minutes, and rinse it with deionized water to obtain a pretreated titanium plate.

[0068] Metal Surface Treatment:

[0069] 1. Put the pretreated titanium sheet in the polishing solution and polish it for 5 minutes. The polishing solution is a mixed acid solution of nitric acid and hydrofluoric acid;

[0070] 2. Anodize the polished titanium sheet in 1.00wt% ammonium fluoride ethylene glycol solution at 20V for 15 minutes. After detecting that there is an oxide layer on the metal surface, the oxide layer is removed by ultrasonication;

[0071] 3. Anodize the pre-oxidized titanium sheet in 0.50wt% hydrofluoric acid solution at 15V for 40min, and ultrasonically remove unstable deposits and adsorbates on the surface;

[0072] After detection, there are nanotube structures on the surface of the titanium su...

Embodiment 3

[0075] Pretreatment: Cut a commercially available 1mm thick titanium plate into rectangular pieces of 450mm*150mm, put it into acetone solution, ultrasonically clean it for 30 minutes, and rinse it with deionized water to obtain a pretreated titanium plate.

[0076] Metal Surface Treatment:

[0077] 1. Put the pretreated titanium sheet in the polishing solution and polish it for 5 minutes. The polishing solution is a mixed acid solution of nitric acid and hydrofluoric acid;

[0078] 2. Anodize the polished titanium sheet in 0.65wt% ammonium fluoride ethylene glycol solution at 30V for 15 minutes. After detecting that there is an oxide layer on the metal surface, the oxide layer is removed by ultrasonic;

[0079] 3. Anodize the pre-oxidized titanium sheet in 0.50wt% hydrofluoric acid solution at 17V for 40min, and ultrasonically remove unstable deposits and adsorbates on the surface;

[0080] After detection, there are nanotube structures on the surface of the titanium substra...

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Abstract

The invention discloses surface treatment metal, a treatment method thereof, a metal resin composite body and a preparing method thereof. The metal is placed in different electrolyte systems to be subjected to pre-oxidation and oxidation treatment, a regular nano tube array structure is formed on the metal surface, the efficiency of enabling resin to enter a nano structure during injection moldingis improved, the yield of the composite body is greatly improved, the metal is subjected to heat treatment, and combination force between an oxide layer and a substrate can be reinforced, the resin is subjected to direct injection molding on the metal with the surface treated, integral forming is achieved, and the metal resin composite body with the quite high combination force is obtained. The manufacturing method is efficient, reliable and solves the problems that an existing nano injection molding process with the titanium alloy as the substrate is low in composite body combination strength and poor in reliability.

Description

technical field [0001] The invention relates to a metal and a processing method thereof, and also to a metal-resin composite body and a preparation method thereof. Background technique [0002] Technology that integrates metal and resin is in great demand for applications in a wide range of industrial fields such as aerospace, automobiles, and electronics. There are mainly two methods for manufacturing metal-resin composites in the prior art. One is to use adhesives, which have poor applicability to environments such as acid, alkali and heat, and poor bonding force; the other is the integration of metal and resin compositions. Molding technology, the resin is directly injected on the surface of the surface-treated metal matrix to form a metal-resin composite. Although the second method has strong environmental adaptability, it needs to solve the problems of low bonding force and low stability of injection molding products to improve practicability. [0003] At present, ano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14
CPCB29C45/14B29C2045/14868
Inventor 陈葳瞿志超薛奇王晓亮周东山
Owner NANJING UNIV
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