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Graphene/dual-phase calcium phosphate composite material and preparation method thereof

A technology of biphasic calcium phosphate and composite materials, which is applied in the field of graphene/biphasic calcium phosphate composite materials and its preparation, can solve the problems of limited application and poor mechanical properties, and achieve simple equipment, low cost and good application prospects Effect

Inactive Publication Date: 2012-10-31
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, but due to its mechanical properties Poor, limiting its use in weight-bearing bone replacement

Method used

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  • Graphene/dual-phase calcium phosphate composite material and preparation method thereof
  • Graphene/dual-phase calcium phosphate composite material and preparation method thereof
  • Graphene/dual-phase calcium phosphate composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Using graphene nanosheets as the tough phase and biphasic calcium phosphate as the matrix, the composite material was prepared by hot pressing and sintering. First, weigh 0.0015g of cetyltrimethylammonium bromide, 0.15g of graphene nanosheets, and 29.85g of biphasic calcium phosphate with an electronic balance. Add cetyltrimethylammonium bromide and graphene nanosheets into 100 ml of distilled water, and disperse them ultrasonically for 1 hour. Add the dispersed solution and the weighed biphasic calcium phosphate into the planetary ball mill tank, and ball mill for 8 hours at 300r / min. The mixed slurry after ball milling was put into a drying oven, dried at 120° C. for 4 hours, and passed through a 100-mesh sieve. Put the mixed powder in a graphite mold with a diameter of 42mm, use argon as a protective atmosphere in a multifunctional hot-press sintering furnace, raise the temperature to 1150°C at 20°C / min, pressurize 30MPa for hot-press sintering, and keep the pressur...

Embodiment 2

[0028] Using graphene nanosheets as the tough phase and biphasic calcium phosphate as the matrix, the composite material was prepared by hot pressing and sintering. First, weigh 0.0030 g of cetyltrimethylammonium bromide, 0.30 g of graphene nanosheets, and 29.70 g of biphasic calcium phosphate with an electronic balance. Add cetyltrimethylammonium bromide and graphene nanosheets into 100 ml of distilled water, and disperse them ultrasonically for 1 hour. Add the dispersed solution and the weighed biphasic calcium phosphate into the planetary ball mill tank, and ball mill for 8 hours at 300r / min. The mixed slurry after ball milling was put into a drying oven, dried at 120° C. for 4 hours, and passed through a 100-mesh sieve. Put the mixed powder in a graphite mold with a diameter of 42mm, use argon as a protective atmosphere in a multifunctional hot-press sintering furnace, raise the temperature to 1150°C at 20°C / min, pressurize 30MPa for hot-press sintering, and keep the pres...

Embodiment 3

[0030] Using graphene nanosheets as the tough phase and biphasic calcium phosphate as the matrix, the composite material was prepared by hot pressing and sintering. First, weigh 0.0045g of cetyltrimethylammonium bromide, 0.45g of graphene nanosheets, and 29.55g of biphasic calcium phosphate with an electronic balance. Add cetyltrimethylammonium bromide and graphene nanosheets into 100 ml of distilled water, and disperse them ultrasonically for 1 hour. Add the dispersed solution and the weighed biphasic calcium phosphate into the planetary ball mill tank, and ball mill for 8 hours at 300r / min. The mixed slurry after ball milling was put into a drying oven, dried at 120° C. for 4 hours, and passed through a 100-mesh sieve. Put the mixed powder in a graphite mold with a diameter of 42mm, use argon as a protective atmosphere in a multifunctional hot-press sintering furnace, raise the temperature to 1150°C at 20°C / min, pressurize 30MPa for hot-press sintering, and keep the pressur...

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Abstract

The invention discloses a graphene / dual-phase calcium phosphate composite material and a preparation method thereof. The composite material is prepared by performing hot pressing and sintering, taking a graphene nano-sheet as a tough phase, taking biphasic calcium phosphate as a substrate, taking hexadecyl trimethyl ammonium bromide as a dispersing agent of the graphene nano-sheet and adopting an ultrasonic ball-milling dispersing process, wherein the mass ratio of the graphene nano-sheet to the biphasic calcium phosphate is (0.5-2.5):(97.5-99.5). The preparation method has the advantages of simple equipment, low cost and stable preparation process; and the prepared composite material has the advantages of uniform dispersion of the tough phase, high bonding property between the tough phase and the interface of the substrate, high mechanical property, bending strength and fracture toughness being up to 151.82MPa and 1.74MPa.m<1 / 2>, being increased by 55 percent and 76 percent respectively in comparison to biphasic calcium phosphate, and good application prospect.

Description

technical field [0001] The invention relates to a graphene / two-phase calcium phosphate composite material and a preparation method thereof, and belongs to the technical field of improving the mechanical properties 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] Biphasic calcium phosphate is a mixture of hydroxyapatite and beta-tricalcium phosphate. 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-tric...

Claims

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Application Information

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IPC IPC(8): C04B35/447C04B35/622
Inventor 孙康宁赵琰王宇翔王伟礼梁延杰孙晓林孙晓宁炊鹏飞
Owner SHANDONG UNIV
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