High-strength flexible wear-resistant bionic composite joint material and preparation method thereof

A composite joint and bionic technology, applied in the intersection of biomedicine and material science, to achieve a wide range of clinical application prospects, good biological activity and biological safety, and avoid stress shielding effects.

Active Publication Date: 2022-03-25
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there is no relevant report on the high-strength, flexible and wear-resistant aluminum oxynitride / polyphenylene sulfide bionic composite joint material prepared by using engineering plastic PPS as the matrix and wear-resistant high-toughness aluminum oxynitride as the filling material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation of aluminum oxynitride / polyphenylene sulfide biomimetic composite joint material comprises the following steps:

[0041] 1) Preparation of aluminum oxynitride ceramics: prepared by carbothermal reduction method, measure 200ml of absolute ethanol and pour it into a nylon ball mill jar (there are Φ10mm and Φ5mm Al in the jar) 2 o 3 Balls are used together as grinding balls), then weigh 100g of carbon black and add it to a nylon tank for horizontal ball milling at a speed of 400-800r / m for 1-3 hours, and weigh 100g of γ-Al 2 o 3 Add it into a nylon ball mill tank, and carry out horizontal ball milling and mixing for 8-10 hours to obtain γ-Al 2 o 3 And the uniform slurry of carbon black is poured out and dried. After drying, sieve with 200 meshes, then agglomerate the powder, and then sinter. The sintering process is treated in two steps. First, keep it at 1500°C for 3-5 hours, then raise the temperature to 1760°C for 3-5 hours, and finally sinter the po...

Embodiment 2

[0049] The preparation of aluminum oxynitride / polyphenylene sulfide biomimetic composite joint material comprises the following steps:

[0050] (1) Preparation of aluminum oxynitride ceramics: with example 1

[0051] (2) Preparation of high-purity medical grade polyarylene sulfide: add 2500ml NMP, 21g (0.525mol) NaOH, 650g sodium sulfide in a 5L reactor, heat to 200°C under nitrogen protection, fractionate 300ml of water, add p-dichloro Benzene 661.5g, 143.6g 4,4-dichlorodiphenyl sulfone (different from Example 1), react at 220°C for 3 hours, the first stage reaction is completed; heat up to 260°C for 3 hours, cool to 150°C and slowly add Ionized water, filtered, washed. Then use water for injection to extract and purify through a Soxhlet extractor at 100°C. The extraction and purification time is 36 hours to remove inorganic substances and small organic molecules, and then vacuum-dry at 120°C for 24 hours; obtain high-purity, pyrogen-free medical grade polymer Arylsulfide. ...

Embodiment 3

[0058] The preparation of aluminum oxynitride / polyphenylene sulfide biomimetic composite joint material comprises the following steps:

[0059] (1) Preparation of aluminum oxynitride ceramics: same as Example 1

[0060] (2) Preparation of high-purity medical-grade polyarylene sulfide: same as Example 1

[0061] (3) Preparation process of aluminum oxynitride / polyphenylene sulfide biomimetic composite joint material: Take 100g of nano-aluminum oxynitride ceramic powder and 300g of medical grade polyphenylene sulfide in dichloromethane to form a uniform slurry. After drying at ℃, mechanical specimens and composite materials were obtained by Haake rheometer and extrusion at 320 ℃; by burning at 800 ℃ for 6 hours, the proportion of residual inorganic substances in the composite material was measured: the content was 25.5%, Consistent with the ingredient ratio, the density of the composite material is: 1.89g / cm 3 .

[0062] Performance Testing:

[0063] The aluminum oxynitride / p...

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Abstract

The invention relates to a high-strength flexible wear-resistant aluminum oxynitride / polyphenylene sulfide bionic composite joint material and a preparation method thereof, and belongs to the crossing field of biomedical science and material science. The invention provides a wear-resistant bionic composite joint material. The composite joint material comprises the following raw materials in parts by weight: 35-90 parts of polyphenylene sulfide and 10-65 parts of aluminum oxynitride. According to the invention, PPS and AlON are compounded for the first time to prepare the bionic composite joint material, and the obtained composite joint material is low in density and has high strength, high toughness and excellent wear resistance.

Description

technical field [0001] The invention relates to a high-strength, flexible, wear-resistant aluminum oxynitride / polyphenylene sulfide bionic composite joint material and a preparation method thereof, belonging to the interdisciplinary field of biomedicine and material science. Background technique [0002] Joints are the core tissue of the human body's support and movement system. They have the characteristics of high strength, flexibility, hardness, wear resistance and long-term load. These characteristics are concentrated in the hip joints and leg joints. Intense exercise, fatigue, disease, and osteoporosis can cause joint damage, destruction, and loss of its normal function. Therefore, a large number of joint repairs and replacements require materials that match their biomechanics, have good biocompatibility, and have stable structures and properties. At present, the mainstream materials for joint replacement are stainless steel and titanium alloy, whose stability and ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/44A61L27/50A61L27/54C01B21/082C08G75/0281
CPCA61L27/446A61L27/50A61L27/54C01B21/0825C08G75/0281C01P2006/80A61L2430/24A61L2300/412C08L81/02
Inventor 卢奕杉
Owner SOUTHWEST UNIV
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