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Carbon fiber composite artificial bone and its preparation method

A composite material and carbon fiber technology, applied in the field of artificial bone, to achieve strong designability, enhanced deformation recovery ability, and good fatigue resistance

Active Publication Date: 2017-12-29
HUNAN TANKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the existing artificial bone prepared by carbon / carbon composite materials, an object of the present invention is to provide a light weight, good biocompatibility, good mechanical properties, no artifacts in medical images, and especially high elasticity Deformation and good toughness, which can realize the function of cartilage and bending shape of carbon fiber composite artificial bone

Method used

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  • Carbon fiber composite artificial bone and its preparation method
  • Carbon fiber composite artificial bone and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1) First twist the 12k polyacrylonitrile-based carbon fiber into a carbon fiber rope, and then weave three 12k carbon fiber ropes into a carbon fiber braid, and the carbon fiber braid is tightly wound in a D-shaped cross-section in a clockwise direction (the size of the cross-section is the same as that of a human rib). The same) carbon material mold to form a spring-like carbon fiber prefabricated body.

[0052] 2) The tubular carbon fiber preform is placed in a natural gas atmosphere, and chemical vapor deposition is carried out at a temperature of 1100°C for 200 hours, and the density of the green body is 1.2g / cm 3 , to obtain the carbon fiber spring-like skeleton body;

[0053] 3) After the carbon fiber spring-shaped skeleton body is removed from the rod-shaped mold, it is placed in an argon protective atmosphere, heated to 2200° C., and the holding time is 10 hours for purification treatment to obtain a carbon fiber spring-shaped skeleton;

[0054] 4) The carbon f...

Embodiment 2

[0058] 1) Twist 12k polyacrylonitrile-based carbon fiber and 6k polyacrylonitrile-based carbon fiber into carbon fiber ropes respectively, one 12k polyacrylonitrile-based carbon fiber rope and two 6k polyacrylonitrile-based carbon fiber ropes are woven into carbon fiber braids, and the two Carbon fiber braids are tightly wound clockwise on a carbon material mold with a rectangular cross-section (the size of the cross-section is similar to that of a human rib), forming a spring-like carbon fiber prefabricated body.

[0059] 2) The carbon fiber spring-like carbon fiber prefabricated body uses phenolic resin as the impregnating agent, and undergoes densification processes such as vacuum pressure impregnation, curing treatment, and carbonization. The main parameters are: impregnation pressure 3.0MPa, time 5 hours; curing at 200°C for 20 hours; carbonization at normal pressure for 4 hours at 1000°C. After 3 cycles, the green body density is 1.5g / cm 3 ; That is, the carbon fiber sp...

Embodiment 3

[0065] 1) First twist three 3k polyacrylonitrile-based carbon fibers into carbon fiber ropes, then weave five carbon fiber ropes into carbon fiber braids, and wind the three carbon fiber braids counterclockwise in parallel and tightly on a carbon material mold with a rectangular cross-section (cross-section about the size of a human rib), forming a spring-like carbon fiber prefab.

[0066] 2) The tubular carbon fiber prefabricated body first uses propylene as a carbon source and nitrogen as a dilution gas, and conducts chemical vapor deposition at a temperature of 900° C. for 120 hours. Then use phenolic resin as impregnant, after vacuum pressure impregnation, curing treatment, carbonization and other densification processes, the main parameters are: impregnation pressure 4.0MPa, time 3 hours; curing at 220°C for 15 hours; temperature at 950°C , normal pressure carbonization for 6 hours, liquid phase impregnation for 2 cycles, and the density of the prepared green body is 1.8g...

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Abstract

The invention discloses a carbon fiber composite artificial bone and its preparation method. The artificial bone includes a carbon fiber composite spring-shaped skeleton or includes a carbon fiber composite spring-shaped skeleton and a carbon fiber composite pin piece; the carbon fiber composite pin piece is arranged at one end or two ends of an empty cavity of the spring-shaped skeleton in an inserted mode or arranged in an empty cavity of the carbon fiber composite spring-shaped skeleton. The preparation method uses carbon fibers as raw materials, a spring-shaped carbon fiber prefabricated body is prepared through the knitting technology, and through density increasing, high-temperature purification and preparation of a wear-resistant coating, the carbon fiber composite spring-shaped skeleton is then obtained; the carbon fiber composite spring-shaped skeleton is combined with the carbon fiber composite pin piece, and an artificial bone is obtained. The artificial bone has the advantages of being light, good in biocompatibility, good in mechanical property and the like, especially the artificial bone is high in elastic deformation and good in toughness, can achieve the partial function of the cartilage, bending and shaping, and the practicability is high.

Description

technical field [0001] The invention relates to an artificial bone, in particular to a carbon fiber composite material artificial bone and a method for preparing the carbon fiber composite material artificial bone by using carbon fiber weaving technology and profiling technology, and belongs to the field of biomedical materials. Background technique [0002] Bone defects caused by trauma, tumors, infections, and abnormal development have always been a difficult problem for medical scientists. Artificial bone grafting is a common method for the treatment of clinical bone defects. At present, the artificial bone biomaterials clinically used in the field of orthopedics mainly include metal materials, ceramics, and polymer materials, and there are many literature reports in this regard. For example, the patent (application number CN02807099.2) applied by Japan in China discloses a porous ceramic artificial bone material formed by β-calcium phosphate, which can be implanted into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61L27/08A61L27/30
CPCA61L27/08A61L27/303A61L27/50A61F2/28A61F2/30942A61F2002/3006A61F2002/2835A61L2430/02A61L27/443A61L27/306A61F2002/30563A61F2310/00161A61F2310/00574A61F2/30965D04C1/04D10B2509/00C08L33/20A61F2002/30113A61F2002/30154A61F2002/30187A61F2002/30433D03D1/00D10B2101/12
Inventor 谭周建易旭
Owner HUNAN TANKANG BIOTECH CO LTD
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