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Forming method and product of polyetheretherketone biophilic metal porous bone implant

A polyether ether ketone and metal porous technology, which is applied in prosthesis, tissue regeneration, additive manufacturing, etc., can solve the problems of poor powder spreading effect, unclear outline, and difficult powder cleaning, etc., and achieves strong reproducibility and contour Clear, silky line resolution

Active Publication Date: 2021-12-17
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the gap in the prior art, the present invention provides a forming method of polyetheretherketone / biophilic metal porous bone implant, which successfully solves the poor powder spreading effect when printing polyether ether ketone / biophilic metal porous structure , Unclear contours, difficulty in cleaning powder, which leads to difficulty in forming, etc.

Method used

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  • Forming method and product of polyetheretherketone biophilic metal porous bone implant
  • Forming method and product of polyetheretherketone biophilic metal porous bone implant
  • Forming method and product of polyetheretherketone biophilic metal porous bone implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of the mixed powder, 475 g of PEEK powder is mixed with 25 g Ta together, and the planetary ball mill is used in 300 r / min.

[0047] (2) Powder pretreatment, (A1) put the composite powder in the formation of the powder chamber and the molded chamber of the HT-SLS additive manufacturing equipment, open the 3DP process software, and set the pretreatment powder temperature of 250 ° C, pretreatment pre-paving The starting temperature is 290 ° C, the pretreatment pre-paving temperature is 300 ° C, the pre-paved time interval 15S, the powdering chamber heating power is 2500W, the infrared radiation efficiency is 0.5, the shaped cavity heating power is 2,300 W, the forming efficiency is 0.6; (a2) into argon Protective gas, heat the powder chamber, the molding chamber; (A3) After the release of the powder, the temperature remains at 300 ° C continues to continue drying 2h, shutting down the system, making the powder naturally cooled to room temperature;

[0048] (...

Embodiment 2

[0051] The present embodiment is mainly different from the first embodiment in that the weight percentage of the PEEK powder is different, and the pre-shutdown temperature and the processing temperature are different, the pre-shutdown temperature is 310 ° C, the processing temperature is 320 ° C, which is specifically as described below.

[0052] (1) Preparation of the mixed powder, 475 g of PEEK powder is mixed with 25 g Ta together, and the planetary ball mill is used in 300 r / min.

[0053] (2) Powder pretreatment, (A1) put the composite powder in the formation of the powder chamber and the molded chamber of the HT-SLS additive manufacturing equipment, open the 3DP process software, and set the pretreatment powder temperature of 250 ° C, pretreatment pre-paving The starting temperature is 290 ° C, the pretreatment pre-paving temperature is 300 ° C, the pre-paved time interval 15S, the powdering chamber heating power is 2500W, the infrared radiation efficiency is 0.5, the shape...

Embodiment 3

[0057] The present embodiment is mainly different from the first embodiment in that the weight percentage of the PEEK powder is different, and the pre-shutdown temperature and processing temperature are different, the pre-shutdown temperature is 305 ° C, the processing temperature is 315 ° C, which is specifically as described below.

[0058] (1) Preparation of the mixed powder, 475 g of PEEK powder is mixed with 25 g Ta together, and the planetary ball mill is used in 300 r / min.

[0059] (2) Powder pretreatment, (A1) put the composite powder in the formation of the powder chamber and the molded chamber of the HT-SLS additive manufacturing equipment, open the 3DP process software, and set the pretreatment powder temperature of 250 ° C, pretreatment pre-paving The starting temperature is 290 ° C, the pretreatment pre-paving temperature is 300 ° C, the pre-paved time interval 15S, the powdering chamber heating power is 2500W, the infrared radiation efficiency is 0.5, the shaped ca...

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Abstract

The invention belongs to the field of advanced manufacturing technology, and in particular relates to a forming method and product of polyetheretherketone biophilic metal porous bone implants. The method of the present invention comprises the following steps: (1) uniformly mixing polyether ether ketone and biophilic metal to obtain a composite powder; (2) performing pretreatment on the composite powder, the pretreatment including performing infrared radiation heat treatment on the powder layer by layer; (3) After the pretreatment, laser selective sintering printing is performed, the printing model is a porous model, the printing strategy is contour optimization, and the spot compensation is zero; (4) The printed part is sandblasted, ultrasonically cleaned, and dried. Get the finished product. The invention fills up the blank of the polyether ether ketone / biophilic metal porous structure high-temperature laser selective sintering forming method, and the prepared porous bone implant can greatly improve the strength and elasticity of the implant after adding BM to PEEK Modulus, so that it is closer to the value of human cortical bone, the process is simple, and the application prospect is broad.

Description

Technical field [0001] The present invention belongs to the field of advanced manufacturing techniques, and more particularly to a polyether ether ketone affinity method and a product of a metal porous bone planting body. Background technique [0002] SINTERING, SLS) is a kind of additive manufacturing technology, which uses the thermoplastic polymer powder as a raw material, by the lifting of the workbench, using the thermal action of the laser, sintering the solid powder material layer, Finally realize the manufacture of three-dimensional solid components. [0003] In general, the preheating temperature of SLS is mostly below 200 ° C, such as conventional SLS material nylon 12 powder SLS formation, and therefore, it is simple and difficult to form. However, the polyether ether ketone (PEEK) is used as a special engineering plastic with excellent performance, and the melting point is higher than that of ordinary engineering plastics, and the processing temperature is more than 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F10/28B22F10/66B22F3/11B22F5/10A61L27/56A61L27/18A61L27/04A61L27/50B33Y10/00B33Y70/10B33Y80/00
CPCB22F3/11B22F3/24B22F5/10A61L27/56A61L27/18A61L27/047A61L27/50B33Y10/00B33Y70/10B33Y80/00A61L2430/02C08L61/16
Inventor 闫春泽蔡昊松陈鹏伍宏志王浩则苏瑾史玉升王从军王明哲
Owner HUAZHONG UNIV OF SCI & TECH
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