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Method for preparing anti-oxidation anti-wear ultrahigh molecular weight polyethylene composite material

A technology of ultra-high molecular weight and composite materials, applied in the field of polymer materials, can solve the problems of reducing the crosslinking degree of composite materials and reducing the wear resistance of composite materials, so as to increase wear resistance, prevent oxidation process, increase Antioxidant and Biocompatibility Effects

Inactive Publication Date: 2016-06-29
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the UHMWPE composites used clinically are mainly radiation crosslinked VE / UHMWPE / GO composites, however, the addition of VE reduces the degree of crosslinking of the composites, thereby reducing the wear resistance of the composites. wear performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the anti-oxidation and wear-resistant ultra-high molecular weight polyethylene composite material, the specific steps are:

[0027] (1) Treatment of ultra-high molecular weight polyethylene: use pharmaceutical-grade ultra-high molecular weight polyethylene powder as the base material, with a particle size range of 4.3-200 μm, and dry the ultra-high molecular weight polyethylene powder at 100°C for 12 hours to remove ultra-high molecular weight polyethylene powder. Moisture content of polyethylene powder;

[0028] (2) Preparation process of mixed powder:

[0029] a. Take 0.3 parts of single-layer graphene oxide and add it to 400 parts of solvent, stir and disperse thoroughly, and then use 200W ultrasonic treatment for 2h;

[0030] b. Add 99 parts of ultra-high molecular weight polyethylene obtained in step (1) to the above solution, and then magnetically stir for 90 minutes and then 200W ultrasonic stripping for 2 hours to obtain mixed powder; ...

Embodiment 2

[0038] The preparation method of the anti-oxidation and wear-resistant ultra-high molecular weight polyethylene composite material, the specific steps are:

[0039] (1) Treatment of ultra-high molecular weight polyethylene: use pharmaceutical-grade ultra-high molecular weight polyethylene powder as the base material, with a particle size range of 4.3-200 μm, and dry the ultra-high molecular weight polyethylene powder at 100°C for 12 hours to remove ultra-high molecular weight polyethylene powder. Moisture content of polyethylene powder;

[0040] (2) Preparation process of mixed powder:

[0041] a. Take 0.7 parts of single-layer graphene oxide and add it to 500 parts of solvent, stir and disperse thoroughly, and then use 400W ultrasonic treatment for 0.5h;

[0042] b. Add 99.6 parts of ultra-high molecular weight polyethylene obtained in step (1) to the above solution, and then magnetically stir for 90 minutes and then 200W ultrasonic stripping for 2 hours to obtain mixed powd...

Embodiment 3

[0050] The preparation method of the anti-oxidation and wear-resistant ultra-high molecular weight polyethylene composite material, the specific steps are:

[0051](1) Treatment of ultra-high molecular weight polyethylene: use pharmaceutical-grade ultra-high molecular weight polyethylene powder as the base material, with a particle size range of 4.3-200 μm, and dry the ultra-high molecular weight polyethylene powder at 100°C for 12 hours to remove ultra-high molecular weight polyethylene powder. Moisture content of polyethylene powder;

[0052] (2) Preparation process of mixed powder:

[0053] a. Take 0.5 parts of single-layer graphene oxide and add it to 450 parts of solvent, stir and disperse thoroughly, and then use 100W ultrasonic treatment for 1h;

[0054] b. Add 99.3 parts of ultra-high molecular weight polyethylene obtained in step (1) to the above solution, and then magnetically stir for 60 minutes and then 300W ultrasonic stripping for 1 hour to obtain mixed powder; ...

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Abstract

The invention specifically relates to a method for preparing an anti-oxidation and wear-resistant ultra-high molecular weight polyethylene composite material, which belongs to the technical field of polymer materials. It selects medical-grade ultra-high molecular weight polyethylene UHMWPE powder as the basic material, and combines it with single-layer graphene oxide GO to make a mixed powder. The mixed powder is added to the mold, and the UHMWPE / GO composite material is prepared by hot pressing. ; Subsequently, it is subjected to γ-ray irradiation crosslinking treatment, and then it is soaked with vitamin-E solution to finally obtain an anti-oxidation and wear-resistant ultra-high molecular weight polyethylene composite material. The present invention cross-links the UHMWPE / GO composite material through γ-ray irradiation with excellent wear resistance, and the two-dimensional structure of GO and excellent mechanical properties and biocompatibility not only reduce wear, reduce the amount of wear debris, but also reduce The degree of cellular adverse reaction caused by wear debris is reduced, and the addition of vitamin-E makes the composite material have excellent anti-oxidation and anti-aging properties.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a preparation method of an anti-oxidation and wear-resistant ultra-high molecular weight polyethylene composite material, which belongs to the technical field of polymer materials. Background technique [0002] Medical ultra-high molecular weight polyethylene (English name abbreviation: UHMWPE) is currently a widely used hip joint socket material. At present, the UHMWPE composites used clinically are mainly radiation crosslinked VE / UHMWPE / GO composites, however, the addition of VE reduces the degree of crosslinking of the composites, thereby reducing the wear resistance of the composites. Wear performance. In addition, the mechanical properties of composite materials need to be further improved compared with pure UHMWPE. Therefore, further improving its performance in terms of mechanics and wear resistance has great significance for medical applications. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J3/28C08J3/24C08L23/06C08K3/04B29C35/08B29C35/02
CPCC08J7/00B29C35/02B29C35/0866C08J3/24C08J3/28C08J2323/06C08K3/04C08L2201/08C08L2207/068C08L2312/06
Inventor 倪自丰段为朋陈国美李广飞
Owner JIANGNAN UNIV
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