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Carbon fiber composite material bone fracture plate and preparation method thereof

A technology of composite materials and composite material layers, which is applied in the direction of chemical instruments and methods, outer plates, phosphorus compounds, etc., can solve problems such as large differences in thermal expansion coefficients, poor mechanical properties, and weak connection strength, so as to improve bonding strength and improve Comprehensive mechanical properties, the effect of avoiding falling off

Active Publication Date: 2019-12-20
HUNAN TANKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some obvious technical problems in the carbon fiber composite bone plate designed in the prior art: as disclosed in the Chinese patent (CN108171798A), the chopped carbon fibers in the carbon ceramic composite bone plate are distributed on the structural frame in a uniform or non-uniform manner. The inner and surface are coated with resin carbon, short carbon fiber, discontinuous long fiber, poor mechanical properties
In addition, the hydroxyapatite on the surface of the carbon fiber-reinforced carbon composite bone plate in the prior art has weak connection strength with the matrix, and the direct contact is easy to crack or delaminate due to the large difference in thermal expansion coefficient.

Method used

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  • Carbon fiber composite material bone fracture plate and preparation method thereof
  • Carbon fiber composite material bone fracture plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1) First twist 4 bundles of 3k carbon fibers into a carbon fiber rope with a twist of 180 twists / m; then weave 12 twisted carbon fiber ropes into a strip-shaped continuous fiber braid.

[0046] 2) Using needles to make the area density 30g / m 2 The carbon fiber nonwoven fabric is riveted on the continuous fiber braid, and the riveting density is 12 points / cm 2 , to obtain a carbon fiber preform.

[0047] 3) The carbon fiber prefabricated body is placed in a vacuum furnace. At a temperature of 1150 ° C, the gas source (trichloromethylsilane, hydrogen as the carrier gas and dilution gas) is introduced, and the flow ratio of trichloromethylsilane to hydrogen is 1: 5) After pyrolysis, the chemical vapor phase is infiltrated into the carbon fiber blank, and after 50 hours, a carbon fiber composite material blank is prepared.

[0048] 4) Electrochemical deposition is used to generate hydroxyapatite on the green body treated in 3), and part of hydroxyapatite penetrates into t...

Embodiment 2

[0052] 1) First twist 3 bundles of 1k carbon fibers into a carbon fiber rope with a twist of 320 twists / m; then weave 15 twisted carbon fiber ropes into a strip-shaped continuous fiber braid.

[0053] 2) Using needles to make the area density 40g / m 2 The carbon fiber non-woven fabric is riveted on both sides of the continuous fiber braid to form a sandwich structure, and the riveting density is 10 points / cm 2 , to obtain a carbon fiber preform.

[0054] 3) The carbon fiber preform undergoes densification processes such as silicon-containing precursor (PCS) vacuum pressure impregnation, curing treatment, and cracking. The impregnation pressure is 2.0MPa, the impregnation time is 5 hours; the curing temperature is 180°C, the curing time is 30 hours, the cracking temperature is 1000°C, the time is 5 hours; the ceramicization temperature is 1400°C, the time is 5 hours, and the carbon fiber is prepared Composite body.

[0055] 4) Plasma spraying is used to generate hydroxyapatit...

Embodiment 3

[0059] 1) First twist 2 bundles of 6k carbon fibers into a carbon fiber rope with a twist of 250 twists / m; then weave 24 twisted carbon fiber ropes into a strip-shaped continuous fiber braid.

[0060] 2) Using needles to make the area density 40g / m 2 The carbon fiber non-woven fabric is riveted on both sides of the continuous fiber braid to form a sandwich structure, and the riveting density is 10 points / cm 2 , to obtain a carbon fiber preform.

[0061] 3) The carbon fiber prefabricated body first generates silicon carbide through liquid impregnation-cracking, and then deposits the carbon matrix through vapor phase. Deposition of silicon carbide process: After vacuum pressure impregnation of silicon-containing precursor (PMS), curing treatment, cracking and other densification processes. The impregnation pressure is 1.0MPa, the impregnation time is 3 hours; the curing temperature is 220°C, the curing time is 10 hours, the cracking temperature is 1000°C, the time is 5 hours; ...

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Abstract

The present invention provides a carbon fiber composite material bone fracture plate and a preparation method thereof. The bone fracture plate is composed of a continuous carbon fiber braided composite material layer and a carbon fiber nonwoven fabric composite material layer in a superposed manner; carbon fibers between the continuous carbon fiber braided composite material layer and the carbon fiber nonwoven fabric composite material layer are filled with a silicon carbide matrix or a silicon carbide-carbon matrix and hydroxyapatite. The composite material has characteristics of light weight, good biocompatibility, good chemical stability, mechanical properties close to human body bones, good fatigue, strong designability, no artifacts, etc., and besides, surface pores and surfaces are stably adhered with the hydroxyapatite which can improve biological activity of the composite material, promotes bone growth and induces bone proliferation.

Description

technical field [0001] The invention relates to a bone plate material, in particular to a carbon fiber composite material bone plate and a preparation method thereof, belonging to the field of biomedical materials. Background technique [0002] The traditional bone plate is mainly made of metal, which has many clinical application problems, such as postoperative complications such as osteoporosis, fracture and rejection caused by stress shielding caused by mismatched mechanical properties, and the ions dissolved by corrosion are toxic. Artifacts are not conducive to postoperative diagnosis, necessary secondary surgery, etc. The non-metallization of osteosynthetic materials has become a development trend, and carbon materials have good biocompatibility. Among them, carbon fiber, pyrolytic carbon, carbon nanotubes and their composites have been applied in many aspects of biomedicine. Carbon fiber composite material is a carbon-based material composed of carbon fiber and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/12A61L31/02A61L31/14A61B17/80C01B25/32C04B35/52C04B35/571C04B35/622C04B35/624
CPCA61L31/122A61L31/028A61L31/14A61B17/80C04B35/571C04B35/622C04B35/52C04B35/624C01B25/325
Inventor 谭周建
Owner HUNAN TANKANG BIOTECH CO LTD
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