Zone electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating material

A composite coating and zone electrophoresis technology, which is applied in the application field of composite coating material science, can solve the problem that HA composite coating materials do not have gradient distribution characteristics, and achieves improved negative charge properties, improved ionization degree, and simple operation process. Effect

Inactive Publication Date: 2021-07-13
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation methods of various HA composite coatings have no obvious gradient distribution characteristics in the prepared HA composite coating materials.

Method used

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  • Zone electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating material
  • Zone electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating material

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Experimental program
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Embodiment 1

[0031] See attached figure 1 , a kind of zonal electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating material, specifically comprises the following steps:

[0032] (1) Preparation of HA suspension: the mixture of HA and chitosan, metal oxide fine particles, metal oxide fine particles such as MgO, ZnO, SrCO 3 , SiO 2 , Fe 2 o 3Add it to the n-butanol dispersion medium, and add triethanolamine as a synergistic dispersant at the same time, ultrasonically disperse for 1 hour and then leave it to age for 24 hours to obtain a HA suspension; wherein, the amount of triethanolamine added is 1% of the volume of n-butanol ; In the present embodiment, the mixture includes 100 parts by weight of HA, 5 parts of chitosan, 1 part of ZnO particles and 1 part of SiO 2 particles;

[0033] (2) Pretreatment of the titanium sheet substrate: after polishing the pure titanium sheet with 800 mesh emery, use a mixed solution of hydrofluoric acid with a m...

Embodiment 2

[0040] See attached figure 1 , a kind of zonal electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating material, specifically comprises the following steps:

[0041] (1) Preparation of HA suspension: the mixture of HA and chitosan, metal oxide fine particles, metal oxide fine particles such as MgO, ZnO, SrCO 3 , SiO 2 , Fe 2 o 3 etc. were added to the n-butanol dispersion medium, and triethanolamine was added as a synergistic dispersant at the same time, and the HA suspension was obtained after ultrasonic dispersion for 0.5h and standing for 30h; wherein, the addition amount of triethanolamine was 1% of the volume of n-butanol %; In the present embodiment, the mixture includes 110 parts by weight of HA, 4 parts of chitosan, 2 parts of ZnO particles and 1 part of SrCO 3 particles;

[0042] (2) Pretreatment of the titanium sheet substrate: polish the pure titanium sheet with 800 mesh emery, etch for 4 minutes with a mixed solution o...

Embodiment 3

[0048] A zonal electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating materials, specifically comprising the following steps:

[0049] (1) Preparation of HA suspension: the mixture of HA and chitosan, metal oxide fine particles, metal oxide fine particles such as MgO, ZnO, SrCO 3 , SiO 2 , Fe 2 o 3 Add it to the n-butanol dispersion medium, and add triethanolamine as a synergistic dispersant at the same time, ultrasonically disperse for 0.5-1h, and then stand and age for 24-30h to obtain a HA suspension; wherein, the amount of triethanolamine added is n-butanol 1% by volume; in the present embodiment, the mixture includes 90 parts by weight of HA, 6 parts of chitosan, 2 parts of ZnO particles and 2 parts of MgO particles;

[0050] (2) Pretreatment of the titanium sheet substrate: after polishing the pure titanium sheet with 800 mesh emery, use a mixed solution of hydrofluoric acid with a mass fraction of 4% and a mixed solution of ...

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Abstract

The invention discloses a zone electrophoresis and electrophoretic deposition method for preparing an HA gradient composite coating material. The method specifically comprises the following steps: (1) preparation of HA turbid liquid: adding 3-4 different fine particulate matters which are subjected to screening pretreatment and contain HA into a dispersion medium according to a certain mass ratio, adding a synergistic dispersant, and standing and aging after ultrasonic dispersion; (2) pretreatment of a titanium sheet substrate; (3) zone electrophoresis distribution of HA turbid liquid: using two pre-treated titanium sheets as a positive electrode and a negative electrode of zone electrophoresis to be placed in the HA turbid liquid in parallel, applying a direct-current constant voltage, and forming zone distribution by electrophoresis of the fine particles; (4) inserting a third pretreated titanium sheet as a negative electrode, and connecting a conversion electrode for electrophoretic deposition; and (5) depositing on the surface of the third pretreated titanium sheet to obtain the HA gradient composite coating material. The HA composite coating material realizes obvious gradient distribution in the normal direction by adopting a physical electrophoretic deposition method, the required equipment is simple and convenient, the operation is simple, and the adhesive force of the composite coating is moderate.

Description

technical field [0001] The invention relates to a zone electrophoresis and electrophoretic deposition method for preparing HA gradient composite coating materials, and belongs to the application technical field of composite coating material science. Background technique [0002] Gradient composite coating material refers to a kind of heterogeneous composite coating material whose composition structure and properties change continuously or quasi-continuously in the direction of material thickness or length, from one dimension, two dimension or three dimension of the material to another direction It is a new type of functional composite coating material that changes continuously so that the performance and function of the material present a gradient change. From the perspective of material structure, gradient composite coating materials are different from uniform materials and composite materials. It selects two (or more) materials with different properties, and slowly and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/02C25D13/20C25D15/00
CPCC25D13/02C25D13/20C25D15/00
Inventor 黄紫洋赵梦阳钟欣
Owner FUJIAN NORMAL UNIV
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