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Flame retardant polyamides and copolyamides for 3D printing

A 3D printing, copolyamide technology, used in 3D object support structures, additive manufacturing, processing and manufacturing, etc., can solve problems such as harmful dimensional stability of parts

Pending Publication Date: 2021-11-02
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ammonium polyphosphate is not responsible for the large uptake of water by the parts (parts) comprising it, which is detrimental to the dimensional stability of the parts in the case of changing humidity levels

Method used

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  • Flame retardant polyamides and copolyamides for 3D printing
  • Flame retardant polyamides and copolyamides for 3D printing
  • Flame retardant polyamides and copolyamides for 3D printing

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Embodiment Construction

[0019] powder bed fusion

[0020] So understood, a method by powder bed fusion is an additive manufacturing method in which an object or component is obtained by selective fusion of certain regions of a bed of powder according to the invention.

[0021] Preferably, the method according to the invention is a 3D printing method and the powder is a powder for 3D printing. More preferably, the method according to the invention is a 3D printing method by laser or infrared sintering of the powder.

[0022] The terms "3D printing" or "additive manufacturing" are understood within the meaning of the present invention to mean any method for the mass production (volume manufacturing) of components by layer-by-layer addition or agglomeration of powders. The agglomeration of the powder by melting (hereinafter "sintering") is caused, for example, by radiation such as a laser beam (laser sintering), infrared radiation, UV radiation or any source of electromagnetic radiation such that the p...

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Abstract

The invention relates to a method for producing flame retardant parts by means of powder bed fusion, wherein the powder comprises at least one polyamide and at least one flame retardant agent in the form of a cyclic phosphonate ester.

Description

technical field [0001] The invention relates to a method for producing flame-retardant components by powder bed fusion and also to corresponding powders, wherein the powders comprise at least one polyamide and / or copolyamide and at least one flame retardant. Background technique [0002] The main industrial challenges for making flame-retardant (flame-retardant) polyamide or copolyamide powders that can be used for additive manufacturing by any powder bed fusion technique (especially layer-by-layer) can be Summed up in four points, namely: [0003] (i) achieving the desired level of fire resistance at a relatively low cost; [0004] (ii) in the context of sustainable development, especially with environmentally friendly flame retardant additives; [0005] (iii) preserve as much as possible the mechanical properties of the polyamide; and [0006] (iv) Obtain good processability of these materials in 3D machinery. [0007] The flame retardancy of polymers is conventionally...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B29C64/314B33Y70/10C08K5/5357C08K5/00
CPCC08K5/5357B29C64/153B33Y70/00C08K5/0066B33Y10/00B29K2077/00C08L77/02
Inventor J-J.弗拉特B.布鲁尔O.佐维J-C.杜兰德
Owner ARKEMA FRANCE SA