Additive manufacturing process for compositions comprising poly-aryl-ether-ketone(s)

A polyaryl ether ketone, additive manufacturing technology, applied in the direction of manufacturing tools, additive processing, additive manufacturing, etc., can solve the problem of not equipped with a system

Pending Publication Date: 2022-02-11
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, heated extrusion nozzles on printers are not equipped with systems designed to achieve high enough temperatures to handle many conventionally available polyaryletherketone compositions

Method used

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  • Additive manufacturing process for compositions comprising poly-aryl-ether-ketone(s)
  • Additive manufacturing process for compositions comprising poly-aryl-ether-ketone(s)
  • Additive manufacturing process for compositions comprising poly-aryl-ether-ketone(s)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0152] The filaments of Example 2 and Example 3 were successfully extruded. The tensile test data of Type IV specimens according to ASTM D638 are shown in Table 1 below:

[0153]

[0154] Table 1

[0155] The sample of Example 2 not according to the invention showed some visible signs of warping, as the surface of the sample did not appear to be perfectly flat. In contrast, the sample of Example 3 according to the invention did not show any signs of warping to the naked eye, since the surface of the sample appeared to be completely flat. From the tensile data in Table 1, it can be seen that the specimens from Example 3 have better tensile strength than Example 2 along the X / Y or Z directions, as indicated by higher values ​​of maximum stress, yield strain, and break strain. mechanical properties.

[0156] The currently used PEKK copolymer with a T:I ratio of 60:40 is particularly advantageous because it has a melt temperature of about 305°C, a half-time crystallization o...

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Abstract

The invention relates to an additive manufacturing process by extrusion for forming a three-dimensional part in an additive manufacturing machine having a build environment, the process comprising: i) providing a composition comprising at least one poly-aryl-ether-ketone (PAEK) having a melt viscosity from about 200 Pa.s to about 1500 Pa.s, according to ASTM D3835-16, measured at a temperature of 320 DEG C and at a shear rate of 100 s-1, by capillary rheology using a 1 mm diameter, 15 mm long die; ii) extruding the composition in the build environment at an extrusion temperature equal to 330 DEG C or less, to form an extruded part section; and, iii) cooling the extruded part section in the build environment. The invention also relates to a filament and its use in said additive manufacturing process and the corresponding object obtainable from said additive manufacturing process.

Description

technical field [0001] The present invention relates to material extrusion additive manufacturing processes, including fused filament fabrication, which can be used to manufacture improved parts, devices and prototypes using compositions comprising one or more polyaryletherketones. Background technique [0002] Material Extrusion Additive Manufacturing is a process that can be used to manufacture devices, components and prototypes. Material extrusion additive manufacturing includes fused filament fabrication ("FFF") processes and material extrusion processes, which are used interchangeably herein unless otherwise stated. [0003] Fused filament fabrication is a widely adopted additive manufacturing technique. Part of the appeal of fuse fabrication is the relative simplicity of its implementation. A basic printer only needs a few motors and a heated nozzle. There is a wide range of fused filament fabrication or other extrusion printers currently available on the market, fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B33Y10/00B33Y80/00B33Y70/00B29K71/00B29K105/00
CPCB29C64/118B33Y10/00B33Y80/00B33Y70/00B29K2071/00B29K2105/0094B29C64/314B29C64/364B29C64/245B33Y30/00B33Y40/00B33Y40/20
Inventor R.雷伯D.刘E.费希尔
Owner ARKEMA FRANCE SA
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