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Two-phase calcium phosphate composite material adopting graphene and carbon nano-tube as synergistic toughening phases and preparation method of composite material

A dual-phase calcium phosphate and carbon nanotube technology, applied in the field of bioceramic composite materials, can solve problems such as poor mechanical properties and limited application, and achieve the effects of low cost, simple equipment and excellent mechanical properties

Inactive Publication Date: 2013-06-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biphasic calcium phosphate bioceramic has been deeply studied and widely used as a bone repair material for a long time. It has the high biological activity and stability of hydroxyapatite and the absorption and degradation characteristics of β-tricalcium phosphate. Due to the controllable degradation Compared with single calcium-phosphorus ceramics in terms of sex and osteogenesis, it has attracted people's attention, but its application in load-bearing bone replacement is limited due to its poor mechanical properties.

Method used

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  • Two-phase calcium phosphate composite material adopting graphene and carbon nano-tube as synergistic toughening phases and preparation method of composite material
  • Two-phase calcium phosphate composite material adopting graphene and carbon nano-tube as synergistic toughening phases and preparation method of composite material
  • Two-phase calcium phosphate composite material adopting graphene and carbon nano-tube as synergistic toughening phases and preparation method of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Using graphene and carbon nanotubes as the tough phase and biphasic calcium phosphate as the matrix, a composite material was prepared by hot pressing and sintering.

[0027] First weigh 0.03g graphene, 0.15g carbon nanotube, 29.82g biphasic calcium phosphate with an electronic balance, then weigh 0.003g and 0.0015g hexadecyltrimethylammonium bromide, respectively for dispersing graphene and carbon nanotubes. Graphene and carbon nanotubes were respectively added to 100 ml of distilled water containing a corresponding mass of cetyltrimethylammonium bromide, and ultrasonically dispersed for 1 hour. Add the dispersed solution and the weighed biphasic calcium phosphate into the planetary ball mill tank, and ball mill at 300r / min for 8 hours. The mixed slurry after ball milling was put into a drying oven for drying at 120° C. for 4 hours, and passed through a 100-mesh sieve. Put the dried and sieved mixed powder into a graphite mold with a diameter of 42 mm, use...

Embodiment 2

[0029] Example 2: Using graphene and carbon nanotubes as the tough phase and biphasic calcium phosphate as the matrix, a composite material was prepared by hot pressing and sintering.

[0030] Weigh 0.06g graphene, 0.15g carbon nanotubes, 29.79g biphasic calcium phosphate with an electronic balance, and then weigh 0.006g and 0.0015g hexadecyltrimethylammonium bromide, respectively for dispersing graphene and carbon nanotube. Graphene and carbon nanotubes were respectively added to 100 ml of distilled water containing a corresponding mass of cetyltrimethylammonium bromide, and ultrasonically dispersed for 1 hour. Add the dispersed solution and the weighed biphasic calcium phosphate into the planetary ball mill tank, and ball mill at 300r / min for 8 hours. The mixed slurry after ball milling was put into a drying oven for drying at 120° C. for 4 hours, and passed through a 100-mesh sieve. Put the dried and sieved mixed powder into a graphite mold with a diameter of 42 mm, use a...

Embodiment 3

[0032] Example 3: Using graphene and carbon nanotubes as the tough phase and biphasic calcium phosphate as the matrix, a composite material was prepared by hot pressing and sintering.

[0033]Weigh 0.06g graphene, 0.3g carbon nanotubes, 29.64g biphasic calcium phosphate with an electronic balance, and then weigh 0.006g and 0.003g hexadecyltrimethylammonium bromide, respectively for dispersing graphene and carbon nanotube. Graphene and carbon nanotubes were respectively added to 150 ml of distilled water containing a corresponding mass of cetyltrimethylammonium bromide, and ultrasonically dispersed for 1.5 hours. Add the dispersed solution and the weighed biphasic calcium phosphate into the planetary ball mill jar, and ball mill at 350r / min for 10 hours. The mixed slurry after ball milling was put into a drying oven for drying at 130° C. for 4 hours, and passed through a 100-mesh sieve. Put the dried and sieved mixed powder into a conventional graphite mold, use argon as a pr...

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Abstract

The invention discloses a two-phase calcium phosphate composite material adopting graphene and carbon nano-tube as synergistic toughening phases. A weight ratio of graphene to the carbon nano-tube to the two-phase calcium phosphate in the composite material is (0.1-0.5):(0.5-2.5):(97.0-99.4). Graphene and carbon nano-tube are adopted as synergistic toughening phases; the two-phase calcium phosphate is adopted as a substrate; hexadecyl trimethyl ammonium bromide is adopted as a dispersing agent for the graphene and carbon nano-tube; and an ultrasonic process is combined with a ball-milling dispersion process to prepare the two-phase calcium phosphate composite material through hot-pressing sintering. According to the two-phase calcium phosphate composite material and the preparation method of the composite material disclosed by the invention, the selected devices are simple; the cost is low, the preparation process is stable; the toughening phases in the prepared composite material are uniformly dispersed; the toughening phases are well combined with the substrate interface, so that the composite material is excellent in mechanical performances; the bending strength and the breaking toughness respectively reach 166 MPa and 2.13 Mpa.m1 / 2, which are respectively improved by 69% and 115% as compared with those of the two-phase calcium phosphate compositebiological ceramics; and the application prospect is good.

Description

technical field [0001] The invention relates to a two-phase calcium phosphate composite material synergistically strong and tough with graphene and carbon nanotubes and a preparation method thereof, belonging to the technical field of bioceramic composite materials. Background technique [0002] Graphene has excellent electronic, mechanical, thermal and other properties. Its elastic modulus and tensile strength are as high as 1.1TPa and 125GPa. The strength of ideal graphene is about 100 times that of ordinary steel. It can be used as a typical two-dimensional toughness phase, which has potential application value in the field of composite materials. [0003] Carbon nanotubes have extremely high strength, toughness and elastic modulus. Its elastic modulus can reach 1TPa, and its tensile strength can reach 150GPa, which is far superior to any fiber material. Using carbon nanotubes as the strong and tough phase of composite materials can exhibit good strength, elasticity, fat...

Claims

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Application Information

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IPC IPC(8): C04B35/447C04B35/622
Inventor 孙康宁赵琰李爱民程福明孙晓宁孙晓林
Owner SHANDONG UNIV
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