Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating

A technology of silane coupling agent and micro-arc oxidation, which is applied in the direction of surface coating liquid device, coating, anodic oxidation, etc., can solve the problems of poor biocompatibility, low bonding strength of coating and substrate, etc., and achieve improvement The effect of binding strength, promoting uniform distribution and transport of electrolytes, and improving the quality of bone repair

Inactive Publication Date: 2014-02-05
JIAMUSI UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low bonding strength and poor biocompatibility between the coating and the substrate in the bioactive coating composite material obtained by the existing preparation method, and provide magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling Preparation method of multi-stage composite bioactive coating

Method used

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  • Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating
  • Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating
  • Preparation method of magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating

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specific Embodiment approach 1

[0026] Embodiment 1: In this embodiment, the method for preparing magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multi-stage composite bioactive coating is implemented according to the following steps:

[0027] 1. Use a micro-drilling machine to drill a round hole on the top of the pure magnesium sample, use sandpaper to roughly grind the surface of the pure magnesium sample, and then place it in acetone and distilled water for 15-25 minutes, and then dry it naturally Finally, tie the aluminum wire at the drilled hole, put the pure magnesium sample tied with the aluminum wire into a sealed bag and seal it for later use;

[0028] 2. Mix 13-17g of Na 2 SiO 3 Dissolve in 0.5L distilled water to obtain electrolyte A, dissolve 8~12g of KOH in 0.5L distilled water to obtain electrolyte B, respectively put electrolyte A and electrolyte B on a magnetic stirrer and stir until the electrolyte is completely dissolved , then pour the electrolyte A into the ele...

specific Embodiment approach 2

[0033] Embodiment 2: This embodiment differs from Embodiment 1 in that in step 3, the ultrasonic oscillation frequency of the ultrasonic processing equipment is controlled to be 30-60 KHz. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that step 3 adjusts the distance between the anode and cathode to 40 mm. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a preparation method of a magnesium surface ultrasonic micro-arc oxidation-HF-silane coupling agent multistage compound bioactive coating, relates to a method for preparing a pure magnesium bioactive coating composite material, and aims to solve the problems of low bonding strength and poor biocompatibility of a coating and a base in a bioactive coating composite material. The method comprises the following steps: 1, roughly grinding and cleaning a pure magnesium sample; 2, preparing an Na2SiO3 electrolyte A and a KOH electrolyte B, mixing the two electrolytes, and adding KF to obtain a micro-arc oxidation electrolyte; 3, regulating parameters of micro-arc oxidation equipment, and performing micro-arc oxidation on the sample to prepare a coating composite material; and 4, sequentially soaking the rinsed coating composite material in an HF solution and a silane coupling agent, thus completing preparation of the bioactive coating. According to the invention, the bonding strength of the coating and the base in the obtained bioactive coating is high; and meanwhile, magnesium fluoride and magnesium silicate in the oxidation layer ensure favorable biocompatibility.

Description

technical field [0001] The invention relates to a method for preparing pure magnesium bioactive coating composite material. Background technique [0002] With the increase of trauma such as bone injury and bone defect and the improvement of human living standards, the requirements for biomaterials such as hard tissue replacement, bone fixation and repair are getting higher and higher. At the same time, problems such as bacterial infection caused by their implantation are also gradually causing people's attention. [0003] Traditional hard tissue replacement and bone fixation materials such as stainless steel and other metal materials have poor biocompatibility, and their elastic modulus is very different from that of human bone, which is prone to stress shielding effect, which can reduce bone strength and slow healing; while polylactic acid and other polymer materials Poor performance, it is difficult to bear a large load. Titanium alloys that have been successfully used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/30B05D7/24
Inventor 李慕勤刘江马臣
Owner JIAMUSI UNIVERSITY
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