Preparation and using method for post-treatment solution of TPU powder selectivity laser sintering product

A post-processing solution and laser sintering technology, which is applied in the direction of manufacturing tools, additive manufacturing, metal processing equipment, etc., can solve the problems that the surface and internal powder cannot be completely cleaned, the surface is rough, etc., and achieve performance improvement, low material cost, and easy availability Effect

Inactive Publication Date: 2019-03-08
河北英曼卡科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the problems of rough surface of existing TPU powder selective laser sintering products, surface and internal powder cannot be cleaned completely, and provide a post-processing method for TPU powder selective laser sintering products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific embodiment one: the mixed solution of the post-treatment method of this embodiment is formed by mixing tetrahydrofuran solution and methyl ethyl ketone solution at 20-30°C according to the volume ratio of (2.5-3.5):2;

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of the THF solution is 90-98%, and the others are the same as Embodiment 1;

specific Embodiment approach 3

[0015] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the concentration of the tetrahydrofuran solution is ≥ 99%, and the others are the same as Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a preparation method and a using method for a post-treatment solution of a TPU powder selectivity laser sintering product. The invention solves the problem that the powder on the surface and interior of the current TPU powder selectivity laser sintering product cannot be completely removed due to a rough surface. In the invention, the post-treatment solution of the TPU powder selectivity laser sintering product is formed by mixing an industrial tetrahydrofuran solution and a butanone solution according to ration. The method is as follows: distilling and purifying the butanone and tetrahydrofuran to obtain the butanone solution and the tetrahydrofuran solution with high concentration; mixing the tetrahydrofuran solution with the butanone solution under a certain temperature, uniformly stirring the mixture by a glass rod; spraying the TPU powder selectivity laser sintering product after loaded in a high-pressure watering can; centrifuging and drying so as to finishthe post treatment of the TPU powder selectivity laser sintering product. Under the condition of ensuring the size precision of a formed piece, the method provided by the invention can improve the mechanical property greatly. The post-treatment solution of the TPU powder selectivity laser sintering product provided by the invention is used in the post-treatment field of the TPU powder selectivitylaser sintering product.

Description

technical field [0001] The invention relates to a method for preparing and using a TPU powder selective laser sintering product post-treatment solution. Background technique [0002] Selective laser sintering technology is a common method of additive manufacturing. It uses a laser as an energy source, and the powder material is rapidly melted and solidified by laser beam irradiation to process a molded object. TPU is a flexible material. Using TPU powder as the raw material for selective laser sintering can produce flexible moldings that other polymer materials do not have, such as medical organ models, sports shoe soles, etc. In the prior art, a layer of floating powder is often attached to the surface of the TPU powder selective laser sintering product, especially the interior is more difficult to clean, resulting in powder falling off the printed product, and the effect is not good enough to be used directly. The invention provides a post-treatment solution and a treatme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/35B29C64/379B29C71/00B33Y40/00
CPCB29C64/35B29C64/379B29C71/0009B33Y40/00
Inventor 董泽天刘晨孟德宇郭帅
Owner 河北英曼卡科技有限公司
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