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Polyether-ether-ketone composite powder capable of being used for laser selective sintering and preparation method of polyether-ether-ketone composite powder

A technology of polyether ether ketone and composite powder, which is applied in the field of selective laser sintering powder preparation, and can solve the problem of high preheating temperature

Active Publication Date: 2022-05-06
重庆交通大学绿色航空技术研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a polyether ether ketone composite powder that can be used for laser selective sintering and its preparation method in view of the above-mentioned problems. Laser irradiation activates rare earth ions, thereby generating high energy and realizing high-temperature melting of polyetheretherketone, so that polyetheretherketone products can be laser sintered at a lower preheating temperature, which overcomes the limitations of existing polyetheretherketone powders. Existing preheating temperature is too high

Method used

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  • Polyether-ether-ketone composite powder capable of being used for laser selective sintering and preparation method of polyether-ether-ketone composite powder
  • Polyether-ether-ketone composite powder capable of being used for laser selective sintering and preparation method of polyether-ether-ketone composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] S1. Weigh 1500 g of polyether ether ketone, 360 g of carbon nanotubes, 20 g of 2,6-di-tert-butyl-4-methyl-phenol, and 20 g of fumed silica, and stir and ball-mill in a high-energy ball mill for 6 hours;

[0027] S2. Weigh 100g of rare earth oxide Yb 2 o 3 , continue stirring ball milling in a high-energy ball mill for 8h to obtain a mixture;

[0028] S3. Pass the mixture through a 100-mesh sieve, and dry at 80°C for 4 hours in a vacuum drying oven;

[0029] S4. Perform selective laser sintering. The equipment parameters during laser sintering are: preheating temperature 205°C, laser power 50W, scanning speed 15m / s, sintering distance 0.1mm, sintering layer thickness 0.1mm, laser sintering is successful, and pull Tensile and impact test specimens.

Embodiment 2

[0031] S1. Weigh 1500g of polyether ether ketone, 360g of nano-graphene, 20g of 2,6-di-tert-butyl-4-methyl-phenol, and 20g of fumed silica, and stir and ball mill in a high-energy ball mill for 6 hours;

[0032] S2. Weigh 100g of rare earth oxide Yb 2 o 3 , continue stirring ball milling in a high-energy ball mill for 8h to obtain a mixture;

[0033] S3. Pass the mixture through a 100-mesh sieve, and dry at 80°C for 4 hours in a vacuum drying oven;

[0034] S4. Carry out selective laser sintering. During laser sintering, the equipment parameters are set as follows: preheating temperature 205°C, laser power 50W, scanning speed 15m / s, sintering distance 0.1mm, sintering layer thickness 0.1mm, laser sintering is successful, and pull Tensile and impact test specimens.

Embodiment 3

[0036] S1. Weigh 1500 g of polyetheretherketone powder, 360 g of carbon nanotubes, 20 g of 2,6-di-tert-butyl-4-methyl-phenol, and 20 g of fumed silica, and stir and ball mill in a high-energy ball mill for 6 hours;

[0037] S2. Weigh 100g of rare earth oxide La 2 o 3, continue stirring ball milling in a high-energy ball mill for 8h to obtain a mixture;

[0038] S3. Pass the mixture through a 100-mesh sieve, and dry at 80°C for 4 hours in a vacuum drying oven;

[0039] S4. Perform selective laser sintering. The equipment parameters during laser sintering are: preheating temperature 205°C, laser power 50W, scanning speed 15m / s, sintering distance 0.1mm, sintering layer thickness 0.1mm, laser sintering is successful, and pull Tensile and impact test specimens.

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Abstract

The invention discloses polyether-ether-ketone composite powder capable of being used for laser selective sintering and a preparation method of the polyether-ether-ketone composite powder, and the polyether-ether-ketone composite powder is prepared from the following components in parts by weight: 60-90 parts of polyether-ether-ketone powder, 5-20 parts of carbon, 0.3-20 parts of rare earth oxide, 0.1-2 parts of an antioxidant and 0.2-3 parts of a flow promoter. By redesigning the proportion, catalytic active elements and the like, when the obtained polyetheretherketone composite powder is irradiated by laser, rare earth ions in the composite powder are activated to generate high energy, so that a polyetheretherketone product can be sintered by laser under the condition of lower preheating temperature, and the production cost is reduced. The problem that the laser sintering preheating temperature of existing polyether-ether-ketone powder is too high is solved; tests show that the tensile strength, the tensile elongation, the fracture impact strength and other strength properties of the polyether-ether-ketone product prepared by selective laser sintering all meet the strength requirements of the polyether-ether-ketone product, and the polyether-ether-ketone product has industrial feasibility.

Description

technical field [0001] The invention relates to the technical field of selective laser sintering powder preparation, in particular to a polyether ether ketone composite powder which can be used for laser selective sintering and a preparation method thereof. Background technique [0002] Selective laser sintering (SLS) is a 3D printing technology that uses infrared lasers (such as CO 2 Laser and fiber laser) as the energy source, the laser beam is selectively sintered under the control of the computer according to the layered section information during processing, and the next layer is sintered after one layer is completed. [0003] Polyetheretherketone (PEEK) is a special polymer material with good properties such as high temperature resistance, chemical corrosion resistance, high mechanical strength, impact resistance, and fatigue resistance. It can be used as high temperature resistant structural materials and electrical insulation materials. A large number of application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08K3/04C08K3/22C08K5/13C08K7/26
CPCC08K3/04C08K3/042C08K3/041C08K3/22C08K5/13C08K7/26C08K2003/221C08K2201/011C08L61/16Y02P10/25
Inventor 李玉福聂祥樊杨大祥邓方行王强成莹张鑫杨文元蔺诗韵
Owner 重庆交通大学绿色航空技术研究院