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A kind of ultra-high molecular weight polyethylene composite material and preparation method thereof

A technology of ultra-high molecular weight and composite materials, which is applied in the field of ultra-high molecular weight polyethylene composite materials and its preparation, and can solve problems such as poor lubrication performance, limited application, and simple structure

Active Publication Date: 2017-02-01
SHANGHAI JIESHI MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the strong hydrophobicity of ultra-high molecular weight polyethylene makes its lubricity poor and its structure simple, which limits its application in the field of biomedical materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The present invention also provides a method for preparing the above ultra-high molecular weight polyethylene composite material, comprising the following steps: A) mixing the bioceramic material and ultra-high molecular weight polyethylene in an alcohol solvent, drying and removing the alcohol solvent to obtain a mixed Raw materials; B) put ultra-high molecular weight polyethylene into the lower layer of the mold, then put the mixed raw material into the upper layer of the mold, and heat press to obtain a double-layer structure sample; C) use the surface of the mixed raw material layer of the double-layer structure sample The inorganic acid solution is used for corrosion to obtain ultra-high molecular weight polyethylene composite materials.

[0030] The bioceramic material and the ultrahigh molecular weight polyethylene are mixed in an alcohol solvent, and the alcohol solvent is removed by drying to obtain a mixed raw material. The type of the bioceramic material is t...

Embodiment 1

[0037] 1.1 Mix hydroxyapatite (HA) powder (150-300 μm) with ultra-high molecular weight polyethylene (UHMWPE) particles, in which HA is 10% of the raw material mass, use absolute ethanol as the dispersion medium, stir evenly at room temperature and put Remove absolute ethanol in a vacuum drying oven to obtain dry mixed raw materials.

[0038] 1.2 Put the ultra-high molecular weight polyethylene particles into the lower layer of the mold, put the mixed raw materials obtained in 1.1 into the upper layer, and heat press molding. The parameters are set as pressure 5KN, temperature 180°C, heating time 15min, cooling time 10min, and the upper layer is obtained as The lower layer of the HA / UHMWPE hybrid material is a double-layer structure sample of pure UHMWPE.

[0039] 1.3 Use 1.0mol / L hydrochloric acid to corrode the surface of the double-layer structure sample obtained in 1.2. The HA on the surface of the HA / UHMWPE mixed material layer is corroded to form a porous structure. The th...

Embodiment 2

[0042] 2.1 Mix hydroxyapatite (HA) powder (150-300 μm) with ultra-high molecular weight polyethylene (UHMWPE) particles, in which HA is 30% of the raw material mass, use absolute ethanol as the dispersion medium, stir well at room temperature and put Remove absolute ethanol in a vacuum drying oven to obtain dry mixed raw materials.

[0043] 2.2 Put the ultra-high molecular weight polyethylene particles into the lower layer of the mold, put the mixed raw materials obtained in 2.1 into the upper layer, and heat-press molding. The parameters are set as pressure 5KN, temperature 180°C, heating time 15min, cooling time 10min, and the upper layer is obtained as The lower layer of the HA / UHMWPE hybrid material is a double-layer structure sample of pure UHMWPE.

[0044] 2.3 Use 1.0mol / L hydrochloric acid to corrode the surface of the double-layer structure sample obtained in 2.2. The HA on the surface of the HA / UHMWPE mixed material layer is corroded to form a porous structure. The th...

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Abstract

The invention provides an ultra-high molecular weight polyethylene composite material. The ultra-high molecular weight polyethylene composite material comprises three layers of structures namely a surface porous layer, a composite layer and an ultra-high molecular weight polyethylene layer; the surface porous layer is formed by compounding ultra-high molecular weight polyethylene with biological ceramic material and then corroding through an inorganic acid solution; the composite layer is formed by compounding ultra-high molecular weight polyethylene with biological ceramic material. Compared with the prior art, the ultra-high molecular weight polyethylene is compounded with the biological ceramic material, and a porous structure is formed through treatment by the inorganic acid solution on the surface, so that the hydrophilicity of the material can be greatly improved; moreover, the ultra-high molecular weight polyethylene on the bottom layer can maintain the mechanical properties of the material, so that the ultra-high molecular weight polyethylene composite material simultaneously has good mechanical property, hydrophilicity and biocompatibility.

Description

technical field [0001] The invention belongs to the technical field of biological materials, and in particular relates to an ultra-high molecular weight polyethylene composite material and a preparation method thereof. Background technique [0002] Biomedical materials, also known as biomaterials, are materials for diagnosing, treating, and replacing damaged tissues and organs or improving their functions. According to the material composition and properties, it is divided into medical metal materials, medical polymer materials, bioceramic materials, biomedical derivative materials, tissue engineering materials and biomedical composite materials. [0003] Among them, medical polymer materials are the earliest biomedical materials, the most widely used materials, and the most widely used materials, and they are also the fastest-growing biomedical materials in recent years. According to the nature, it can be divided into two categories: non-degradable and biodegradable. Non-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/40A61L31/12
Inventor 赵洪兵胡园园陈宇辉赵世玺
Owner SHANGHAI JIESHI MEDICAL TECH