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Composition for use in additive manufacturing processes

A composition, polymer technology, used in the manufacture of tools, additive processing, additive manufacturing, etc., to solve problems such as the inability to maintain size

Pending Publication Date: 2020-06-30
EOS ELECTRO OPTICAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, in the case of shaped bodies made from such polymer systems, the desired dimensions are often not maintained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0097] Preparation of the composition according to the invention:

[0098] 0.15% by weight of an anti-agglomeration agent (Aerosil R 812, Evonik, Germany, based on the final weight of the composition to be prepared) was sieved through a vibrating sieve (company Retsch, mesh size 245 μm) and then mixed in a tumbler A machine (Turbula T2F type, Willy A. Bachofen AG, 70 U / min to 80 U / min) was mixed with 100 g of the polymer system (Elastollan EXP SP 9415, BASF) for 5 to 20 minutes. The mixture was then mixed with 2 kg of the polymer system in a concrete mixer (BM 140, Atika GmbH, inclination angle 30°) over a period of about 5 to 20 minutes and then packed in cardboard boxes with inner film bags.

example 2

[0100] Prepare the composition according to the invention in the same manner as in Example 1, only so that the first mixture of the polymer (Elastollan EXP SP 9415) and the first anti-agglomeration agent (HDK H20, Wacker Chemie, Germany) is prepared in the above-mentioned manner. mixture, and in a second step a mixture of a second anti-agglomeration agent (Aerosil R 812, Evonik, Germany) and a polymer (Elastollan EXP SP 9415) was prepared in the manner described above. The first mixture was then mixed similar to Example 1 into the total amount of polymer (Elastollan EXP SP 9415). The second mixture was then incorporated into the polymer and packaged (as described in Example 1). In this case, the final concentration of the first anti-agglomeration agent in the total mixture is 0.05% by weight and the final concentration of the second anti-agglomeration agent is 0.15% by weight.

example 3

[0102] The bulk density of the compositions according to the invention according to Examples 1 and 2 was determined below using an apparatus according to DIN EN ISO 60:2000-01.

[0103] The funnel is fixed vertically with its lower opening 20 to 30 mm above the graduated cylinder (volume: 100 ml, inner diameter 45±5 mm, with polished inner surface) so that the axis of the funnel coincides with that of the graduated cylinder.

[0104] 110 to 120 ml of the composition according to the invention (according to example 1 or example 2) are given through a funnel whose lower opening is closed by a metal plate. The metal plate is then quickly opened, allowing the composition according to the invention to flow out into the graduated cylinder. Excess composition according to the invention was stripped from the cylinder by means of a rod, and the cylinder was then weighed on a scale (Kern, Germany) taking into account its tare weight. The bulk densities determined in this case are shown...

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Abstract

The present invention relates to a composition comprising at least one polymer system and at least one anti-agglomeration agent, wherein the polymer system is selected from at least one thermoplasticpolymer, wherein the bulk density of the composition is more than 300 g / l. The present invention further relates to a method for producing the composition according to the invention and to the use thereof.

Description

technical field [0001] The present invention relates to a composition comprising at least one polymer system and at least one anti-agglomeration agent, wherein the polymer system is selected from at least one thermoplastic polymer, the bulk density of the composition is greater than 300 g / l. Furthermore, the invention also relates to processes for the preparation of the compositions according to the invention and their use. Background technique [0002] The provision of prototypes as well as industrial manufacturing of components is becoming more and more important. Particularly suitable are additive manufacturing methods which work on powdered materials and in which the desired structure is produced in layers by selective melting and solidification or by applying adhesives and / or adhesives. [0003] Additive manufacturing methods enable the manufacture of plastic objects. The process is also known as "additive manufacturing", "digital manufacturing" or "three-dimensiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06
CPCC08K9/06B33Y70/00C08L75/04B33Y10/00B29C64/135B29K2075/00B29K2101/12B29K2105/0008C08K3/36C08K5/56
Inventor M·盖斯勒S·帕特诺斯特D·弗尔池
Owner EOS ELECTRO OPTICAL SYST