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A kind of polymer piezoelectric composite material and its preparation method and application

A piezoelectric composite material and polymer technology, applied in medical science, prosthesis, tissue regeneration, etc., can solve problems such as the application of piezoelectric composite materials has not been reported yet, the rehabilitation effect of artificial ligament implantation surgery is poor, and there is no such problem. , to achieve the effect of reasonable composition and proportion, excellent piezoelectric performance and strong biocompatibility

Inactive Publication Date: 2019-03-08
XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the current artificial ligament is that it does not have the function of simulating the proprioceptors contained in the ligament to sense the proprioception—to generate bioelectric impulses—to upload. The lack of this function is the key reason for the poor rehabilitation effect of artificial ligament implantation surgery.
[0006] At present, there is no report on the application of piezoelectric composite materials in artificial ligaments

Method used

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  • A kind of polymer piezoelectric composite material and its preparation method and application
  • A kind of polymer piezoelectric composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Preparation of the polymer piezoelectric composite material of the present invention (1)

[0031] Mix PVDF, DMF and acetone in a mass ratio of 2:5:5, and stir at room temperature for 48 hours until PVDF is completely dissolved to obtain a PVDF solution; then add BNT with a mass of 48 wt% PVDF to the PVDF solution and stir at room temperature for 60 hours. The PVDF mixed solution with uniformly dispersed BNT is obtained and granulated.

Embodiment 2

[0032] Example 2 Preparation of the polymer piezoelectric composite material of the present invention (2)

[0033] Mix PVDF, DMF and acetone in a mass ratio of 2:5:5, and stir at room temperature for 48 hours until PVDF is completely dissolved to obtain a PVDF solution; then add BNT with a mass of 65 wt% PVDF to the PVDF solution, and stir at room temperature for 60 hours. The PVDF mixed solution with uniformly dispersed BNT is obtained and granulated.

Embodiment 3

[0034] Example 3 Preparation of the polymer piezoelectric composite material of the present invention (3)

[0035] Mix PVDF, DMF and acetone in a mass ratio of 2:5:5, and stir at room temperature for 48 hours until PVDF is completely dissolved to obtain a PVDF solution; then add BNT with a mass of 55 wt% PVDF to the PVDF solution, and stir at room temperature for 60 hours. The PVDF mixed solution with uniformly dispersed BNT is obtained and granulated.

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Abstract

The invention relates to a macromolecule piezoelectric composite material as well as a preparation method and the application thereof. The macromolecule piezoelectric composite material comprises the following steps: mixing polyvinylidene fluoride, N,N-dimethyl formamide and acetone according to a mass ratio of (1-3):(4-6):(4-6), stirring for 24-72 hours at a room temperature till the polyvinylidene fluoride is completely dissolved so as to obtain a polyvinylidene fluoride solution; adding a piezoelectric functional body which accounts for 2-80wt% of the mass of the polyvinylidene fluoride into the polyvinylidene fluoride solution, stirring for 48-72 hours at a room temperature so as to obtain a polyvinylidene fluoride mixed liquid in which the piezoelectric functional body is uniformly dispersed, and pelleting, so as to obtain the macromolecule piezoelectric composite material. The macromolecule piezoelectric composite material is of a nano grade, has electric potential, is very excellent in piezoelectric property, has the effects that joint deformation can be sensed by an artificial ligament made of the material, biological electricity can be generated and current is conducted upwards to nervus centralis from residual nerve endings of the ligament, and moreover is non-toxic and harmless and good in biocompatibility.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polymer piezoelectric composite material and a preparation method and application thereof. Background technique [0002] In terms of performance, materials can be divided into structural materials and functional materials. Structural materials are based on their mechanical properties such as strength, toughness, hardness, and elasticity. Functional materials are based on their electrical, magnetic, optical, acoustic, thermal, etc. Based on physical properties, it is used to make devices with special functions. Piezoelectric materials are functional materials that realize the mutual conversion of mechanical energy and electrical energy. They are a class of electronic materials that are sensitive to machinery, electricity, sound, light, and heat. They are currently widely used in industrial sectors and high-tech fields. [0003] Piezoelectric materials are divided into piezoe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/16C08K3/24A61L27/44A61L27/50
CPCA61L27/446A61L27/50A61L2430/10C08K3/24C08K2201/014C08L2203/02C08L27/16
Inventor 师东良李华蔡奇勋沈品泉齐燕张春梅薛文超
Owner XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE