Biomedical multilayer metal-based composite substrate with force-electricity and magnetic-electricity response characteristics and preparation method of biomedical multilayer metal-based composite substrate

A multi-layer metal and composite substrate technology, which is applied in the field of biomedicine to achieve the effects of improving force-electricity and magneto-electricity double-response characteristics, increasing the content of beta phase and magnetic phase, and enhancing piezoelectric performance

Pending Publication Date: 2022-05-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on PVDF to improve the piezoelectric output performance mainly focuses on the force-electric or magneto-electric response of the composite system, but there are few studies on the force-electric and magneto-electric dual responses of the composite system, and how to effectively improve the force -Electric and magnetic-electric double response is a widely concerned issue

Method used

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  • Biomedical multilayer metal-based composite substrate with force-electricity and magnetic-electricity response characteristics and preparation method of biomedical multilayer metal-based composite substrate
  • Biomedical multilayer metal-based composite substrate with force-electricity and magnetic-electricity response characteristics and preparation method of biomedical multilayer metal-based composite substrate
  • Biomedical multilayer metal-based composite substrate with force-electricity and magnetic-electricity response characteristics and preparation method of biomedical multilayer metal-based composite substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1). First, add 5% CFO particles by mass to N,N-dimethylformamide (DMF) solvent, and ultrasonically disperse them in an ultrasonic cleaner;

[0029] (2). Add P(VDF-TrFE) solid powder to DMF neutralized CFO particle solution with a mass fraction of 5%, stir under ultrasonic until the powder is completely dissolved, and obtain P(VDF-TrFE) solution and P(VDF-TrFE) ) / CFO solution;

[0030] (3). P(VDF-TrFE) or P(VDF-TrFE) / CFO particle solution film was prepared by casting method, and placed in an oven at 37℃ for 24h to form 40μm P(VDF-TrFE) or P(VDF-TrFE) ) / CFO film;

[0031] (4). The metal surface was polished with 400-grit sandpaper, and then treated with oxalic acid for 1 h to obtain a surface roughness of 1.1 μm, and the upper and lower layers of titanium metal with a thickness of 25 μm and the middle 2 layers of P (VDF-TrFE) film and P ( VDF-TrFE) / CFO thin film composed of a multi-layer metal matrix composite substrate with a total thickness of 130 μm, which was hot-p...

Embodiment 2

[0034] (1). First, add 10% Terfenol-D particles by mass to N,N-dimethylformamide (DMF) solvent, and ultrasonically disperse them in an ultrasonic cleaner;

[0035](2). Add the P(VDF-TrFE) solid powder to the DMF neutralized Terfenol-D particle solution with a mass fraction of 10%, stir under ultrasonic until the powder is completely dissolved, and obtain the P(VDF-TrFE) solution and P(VDF) -TrFE) / Terfenol-D solution;

[0036] (3). P(VDF-TrFE) or P(VDF-TrFE) / Terfenol-D film was prepared by casting method, and placed in a 37℃ oven for 24h to form 45μm P(VDF-TrFE) or P(VDF-TrFE) ) / Terfenol-D film;

[0037] (4). The metal surface was polished with 800-grit sandpaper, and then treated with hydrochloric acid for 1.5 hours to obtain a surface roughness of 2.2 μm, and the upper and lower layers of zinc metal with a thickness of 40 μm and the middle 3 layers of P (VDF-TrFE) film and P (VDF-TrFE) / Terfenol-D thin film composed of a multi-layer metal matrix composite substrate with a to...

Embodiment 3

[0040] (1). First, 15% Ni-Co alloy particles were added to N,N-dimethylformamide (DMF) solvent, and ultrasonically dispersed in an ultrasonic cleaner;

[0041] (2). P(VDF-TrFE) solid powder was added to DMF neutralized Ni-Co alloy particle solution with a mass fraction of 15%, and stirred under ultrasonic until the powder was completely dissolved to obtain P(VDF-TrFE) solution and P( VDF-TrFE) / Ni-Co alloy solution;

[0042] (3). P(VDF-TrFE) and P(VDF-TrFE) / Ni-Co thin films were prepared by casting method and placed in an oven at 40℃ for 28h to form 50μm P(VDF-TrFE)P(VDF-TrFE) / Ni-Co alloy film;

[0043] (4). The metal surface was polished with 1500-grit sandpaper, and then treated with sulfuric acid for 2 hours to obtain a surface roughness of 2.9 μm, and the upper and lower layers of tantalum metal with a thickness of 50 μm and the middle 4 layers of P (VDF-TrFE) film and P ( VDF-TrFE) / Ni-Co alloy thin film composed of a multi-layer metal matrix composite substrate with a t...

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Abstract

The invention discloses a biomedical multilayer metal-based composite substrate with force-electricity and magnetic-electricity response characteristics and a preparation method of the biomedical multilayer metal-based composite substrate. The upper layer and the lower layer of the multi-layer metal-based composite substrate are made of metal, the middle layer is formed by arranging a polyvinylidene fluoride trifluoroethylene (P (VDF-TrFE)) film and a P (VDF-TrFE)/magnetic particle film at intervals, and the preparation method comprises the steps that the multi-layer metal-based composite substrate is subjected to heat treatment in a muffle furnace to form the P (VDF-TrFE) mainly containing a piezoelectric beta crystal phase, and the piezoelectric beta crystal phase mainly containing the P (VDF-TrFE) is formed. And the piezoelectric material with the force and magnetic dual-response characteristic is obtained through polarization processing. The multilayer metal-based composite substrate provided by the invention has good force-electricity and magnetic-electricity double response characteristics, and can be applied to the biomedical field. In addition, the preparation method of the multi-layer metal-based composite substrate is simple and easy to implement.

Description

technical field [0001] The invention relates to the field of biomedicine, in particular to a biomedical multi-layer metal-based composite substrate with both force-electricity and magneto-electricity response characteristics and a preparation method thereof. Background technique [0002] Medical metal materials include titanium and titanium alloys, tantalum, stainless steel, and biodegradable metals such as magnesium and zinc. They have good mechanical strength, ductility and electrical conductivity. They are mainly used in orthopedics, dentistry and orthopedic surgery. The manufacture of implanted medical devices such as artificial prostheses has played an important role in prolonging the lifespan of patients, improving the function of affected limbs, and improving the overall quality of life of patients. With the growing medical demand, in addition to these basic advantages, medical metal materials should also provide more functions, such as osseointegration, antibacterial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/04A61L27/16A61L27/02A61L27/06A61L27/50
CPCA61L27/047A61L27/16A61L27/025A61L27/042A61L27/045A61L27/06A61L27/50A61L2400/18C08L27/16
Inventor 程逵林伟明陈作兵翁文剑
Owner ZHEJIANG UNIV
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