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Carbon fiber reinforced resin powder material for selective laser sintering

A technology of laser sintering and resin powder, which is applied in the field of materials, can solve problems such as low strength and rigidity, unsatisfactory reinforcement effect, and failure to meet the performance requirements of the mechanical performance test of molded parts, etc., to achieve good molding effect, light weight, and high strength. and the effect of high modulus

Active Publication Date: 2014-07-30
HUNAN FARSOON HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength and rigidity of this type of material are low, and the products formed by SLS technology cannot meet the mechanical performance test requirements of some molded parts or the performance requirements for direct use as final products.
[0004] In order to meet the mechanical performance requirements of resin SLS parts used directly as end products, a variety of reinforcement methods have appeared, such as glass fiber and mineral fiber to reinforce resin-based materials, but due to the mechanical properties of glass fiber and mineral fiber and the The problem of surface morphology makes the enhancement effect not particularly ideal, and cannot meet the application requirements of some SLS molded parts very well.

Method used

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  • Carbon fiber reinforced resin powder material for selective laser sintering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Below, the embodiment of the present invention is described, but the present invention is not limited thereto:

[0022] (1) Accurately weigh each component according to the following data: carbon fiber, 1Kg, with an average diameter of 7 microns and a length range of 201-300 microns; nylon 12 powder, 8.8Kg, with a particle size range of 20-100 microns; Silicon oxide, 100g; Dispersant graphite powder, 20g; Antioxidant 1098, 80g;

[0023] (2) Use a 2.5L high-speed stirrer to break up the agglomerated fumed silica;

[0024] (3) Stir and mix about 1Kg of nylon 12 powder with crushed fumed silica, antioxidant 1098 and graphite powder to obtain the powder, and mix in 3 times;

[0025] (4) Sieve the carbon fiber with an 80-mesh sieve to remove the agglomerated parts and impurities in the carbon fiber;

[0026] (5) Put the powder, the sieved carbon fiber and the remaining nylon 12 powder into the V-shaped stirring device and stir for 40-60 minutes;

[0027] (6) The material ...

Embodiment 2

[0029] (1) Accurately weigh each component according to the following data: carbon fiber, 2Kg, with an average diameter of 7 microns and a length range of 201-300 microns; nylon 12 powder, 7.8Kg, with a particle size range of 20-100 microns; Silicon oxide, 90g; Dispersant graphite powder, 30g; Antioxidant 1098, 80g;

[0030] (2) Use a 2.5L high-speed stirrer to break up the agglomerated fumed silica;

[0031] (3) Stir and mix about 1Kg of nylon 12 powder with crushed fumed silica, antioxidant 1098 and graphite powder to obtain the powder, and mix in 3 times;

[0032] (4) Sieve the carbon fiber with an 80-mesh sieve to remove the agglomerated parts and impurities in the carbon fiber;

[0033] (5) Put the powder, the sieved carbon fiber and the remaining nylon 12 powder into the V-shaped stirring device and stir for 40-60 minutes;

[0034] (6) The material stirred in step (5) is the target material.

Embodiment 3

[0036] (1) Accurately weigh each component according to the following data: carbon fiber, 3Kg, with an average diameter of 7 microns, and a length range of 250-350 microns; nylon 12 powder, 6.8Kg, with a particle size range of 25-120 microns; gas phase oxidation Aluminum, 80g; Dispersant EBS powder, 50g; Antioxidant 9228, 70g;

[0037] (2) Stir and mix about 1Kg of nylon 12 powder with fumed alumina, antioxidant 9228 and EBS powder to obtain primer powder, and mix in 3 times;

[0038] (3) Sieve the carbon fiber with an 80-mesh sieve to remove the agglomerated parts and impurities in the carbon fiber;

[0039] (4) Put the powder, the sieved carbon fiber and the remaining nylon 12 powder into the V-shaped stirring device and stir for 40-60 minutes;

[0040] (5) The material stirred in step (4) is the target material.

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Abstract

The invention relates to a carbon fiber reinforced resin powder material for selective laser sintering (SLS). The powder material comprises 48-88 parts by mass of resin powder, 10-50 parts by mass of carbon fibers, 0.5-1.2 parts by mass of antioxidants, 0.2-1 part by mass of flow promoting agent and 0.2-0.6 parts by mass of dispersant per 100 parts by mass of the reinforced material. The carbon fiber reinforced resin powder material for selective laser sintering is obtained by configuring the each component sequentially according to a certain process. The strength and modulus of SLS molded parts made of the resin powder material disclosed by the invention, compared with SLS molded parts made of the matrix resin material, are greatly enhanced and the requirements on the mechanical performance of the molded parts directly as end products can be met better.

Description

technical field [0001] The invention relates to the field of materials, in particular to a carbon fiber reinforced resin powder material for selective laser sintering. Background technique [0002] Selective Laser Sintering (SLS for short) is a widely used rapid prototyping technology at present. The principle of its forming process is: first establish a computer 3D model of the target part, and then use layered software to process the 3D model. Slicing processing, to obtain the data information of each processing level, under the control of the computer, according to the slice level information, use the laser beam to scan and sinter the heat-fusible powder material layer by layer, and finally complete the processing and manufacturing of the target parts. SLS technology can be applied to a wide range of materials, including polymers, metals and ceramics. [0003] In the selective laser sintering process, the powder material is a key factor affecting the performance of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L23/12C08K13/06C08K9/02C08K9/06C08K7/06C08J5/06
CPCC08J5/042C08J5/06C08J2377/02C08J2377/06C08K3/04C08K3/22C08K3/36C08K7/06C08K9/02C08K13/04C08K13/06C08K2003/2227C08K2201/003C08K2201/004C08L77/02C08L77/06
Inventor 苏婷冯晓宏陈礼许小曙
Owner HUNAN FARSOON HIGH TECH CO LTD
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