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Preparation method of zirconium-oxide/carbon composite fiber modified epoxy coating

A technology of fiber modification and epoxy coating, which is applied in the field of material chemistry, can solve problems such as difficulty in fully exerting performance and difficult control of composite material structure, and achieve enhanced mechanical properties and corrosion resistance, fewer material structural defects, and uniform size Effect

Inactive Publication Date: 2018-07-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used methods for preparing zirconia / carbon composite fibers mainly include: sol-gel method, hydrothermal method, etc.; however, the structure of the composite material prepared by the above methods is not easy to control, making it difficult to give full play to its excellent performance

Method used

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  • Preparation method of zirconium-oxide/carbon composite fiber modified epoxy coating
  • Preparation method of zirconium-oxide/carbon composite fiber modified epoxy coating
  • Preparation method of zirconium-oxide/carbon composite fiber modified epoxy coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a zirconia / carbon composite fiber modified epoxy coating comprises the following steps.

[0028] (1) Preparation of zirconia / carbon fiber.

[0029] First, add 15g of zirconium acetate (15%) solution into a vial containing a mixed solution of 2mL N,N-dimethylformamide (DMF) and 2mL of absolute ethanol, stir for 2 hours, and then add 0.7g of polyvinylpyrrolidone (PVP) powder, continue to stir at 25°C for 12 hours to obtain a transparent and uniform PVP / zirconium acetate composite precursor solution; put the precursor solution into a 10mL glass syringe , and install a flat needle with an inner diameter of 0.32mm, add a positive voltage of 20Kv, a negative voltage of -1.5Kv, set the distance between the needle and the spinning receiver at 17cm, and then spin at a speed of 1mL / h to obtain PVP / Zirconium acetate composite nanowires. The product was first dried in a vacuum oven at 60°C to ensure that the solvent was fully volatilized; then, the obtaine...

Embodiment 2

[0037] (1) Preparation of pure carbon fibers.

[0038]First, add 0.7 g of polyvinylpyrrolidone (PVP) powder into a vial containing a mixed solution of 6 mL of N,N-dimethylformamide (DMF) and 6 mL of absolute ethanol, and stir at 25 °C for 12 hours Finally, a transparent and uniform PVP solution is obtained. Put the solution into a 10mL glass syringe and install a flat needle with an inner diameter of 0.32mm. Apply a positive voltage of 20Kv and a negative voltage of -1.5Kv. The needle and the spinning receiver The distance was set to 17cm, and then spinning was carried out at a propulsion speed of 1mL / h to obtain PVP nanowires. The product was first dried in a vacuum oven at 60°C to ensure that the solvent was fully evaporated; then, the obtained PVP nanowires were heated at 400 Calcined for 2 hours, then heated up to 600°C at a rate of 1°C / min, held for 3 hours, and then cooled naturally to obtain pure carbon fibers. The whole process of calcination was carried out under the ...

experiment example

[0046] The present invention uses zirconium acetate and polyvinyl pyrrolidone as base materials to prepare zirconia-carbon composite fibers (ZrO 2 -CNF), the obtained fiber has the characteristics of uniform fiber size, less material structural defects and uniform distribution of zirconia. After organic modification, it has good compatibility and dispersion when added to epoxy coating properties, which can effectively improve the mechanical properties and corrosion resistance of epoxy coatings. The results of XRD analysis, scanning electron microscope analysis and component analysis of the samples in Example 1 show that the experiment successfully prepared zirconia-carbon composite fibers, and the oxidation Zirconium is uniformly dispersed on the carbon fiber; at the same time, tensile tests, microhardness tests, and EIS experiments were carried out on these samples to study the mechanical properties and corrosion resistance of nano-zirconia-carbon fiber composite coatings. The...

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Abstract

The invention discloses a preparation method of a zirconium-oxide / carbon composite fiber modified epoxy coating. The preparation method comprises the following steps of: (1) preparation of zirconium-oxide / carbon fiber: stirring mixed solution of 15g of zirconium acetate solution, 2mL of N,N-dimethyl formamide (DMF) and 2mL of absolute ethyl alcohol for 2 hours, then adding 0.7g of polyvinylpyrrolidone (PVP) powder, then continuously stirring for 12 hours at temperature of 25 DEG C, and obtaining precursor solution of a PVP / zirconium acetate compound; then adopting an electrostatic-spinning method to prepare nanowires with uniform size and zirconium-oxide dispersion, and finally calcining the nanowires under the protection of argon atmosphere to prepare ZrO2-CNF composite fiber; (2) preparation of modified zirconium-oxide / carbon fiber (ZrO2-CNF); (3) adding the prepared modified zirconium-oxide / carbon fiber into an epoxy coating. The preparation method disclosed by the invention has thebeneficial effect that the mechanical property and the corrosion resistance of the epoxy coating are effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a preparation method of a zirconia / carbon composite fiber modified epoxy coating. Background technique [0002] Carbon fiber has the characteristics of high specific strength, low thermal expansion rate, good dimensional stability, good thermal conductivity, excellent weather resistance and good thermal stability. It is regarded as one of the most advanced and mature materials in this century, and is known as The black revolution of the 21st century, and will have important application value and broad application prospects in various high-tech fields in the future; while zirconia has high compressive strength, and its compressive strength can reach 2100MPa under normal temperature conditions , under high temperature conditions (1000°C), its compressive strength can still reach 1190MPa; at the same time, it has the characteristics of high density and impact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08D01F9/21D01F1/10
Inventor 何毅陈春林卿大咏钟菲何腾何泽伍友清殷祥英
Owner SOUTHWEST PETROLEUM UNIV
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