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Polymer composite material for selective laser sintering 3D printing as well as preparation method and application thereof

A polymer material, laser sintering technology, applied in the field of materials, can solve problems such as weak interlayer bonding force, and achieve the effect of strengthening bonding force, low cost and low energy consumption

Active Publication Date: 2020-12-08
湖南创瑾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 3D printing of SLS materials in the prior art is to use lasers to melt nylon and other polymer materials layer by layer and then sinter and print them, which leads to weak interlayer bonding of the printed parts

Method used

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  • Polymer composite material for selective laser sintering 3D printing as well as preparation method and application thereof
  • Polymer composite material for selective laser sintering 3D printing as well as preparation method and application thereof

Examples

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Embodiment Construction

[0032] In order to describe the technical content, achieved objectives and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments. The test methods used in the examples are conventional methods unless otherwise specified; the used materials, reagents, etc., are commercially available reagents and materials unless otherwise specified. Relative viscosity refers to the ratio of the dynamic viscosity of fluid to the dynamic viscosity of water at the same temperature.

[0033] Embodiment 1 of the present invention is: a polymer composite material for selective laser sintering 3D printing, including the following preparation raw materials in parts by weight: 100 parts of polymer material (nylon 11), low-viscosity filler (hexa 8 parts of arm star polystyrene), 10 parts of inorganic filler (cationic starch-coated silica, particle size 90-120nm), 2 parts of light absorber (tungsten trioxide), antioxidant (mass ratio: 1:2...

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Abstract

The invention discloses a polymer composite material for selective laser sintering 3D printing as well as a preparation method and application of the polymer composite material. The polymer compositematerial is prepared from the following preparation raw materials, by weight: 100 parts of a polymer material, 3-8 parts of a low-viscosity filler, 5-10 parts of an inorganic filler, 0.1-2 parts of alight absorber, 0.05-0.15 part of an antioxidant and 0.2-1 part of a coupling agent. The relative viscosity of the low-viscosity filler is below 2.3, the low-viscosity filler is at least one of oligomers or polymers, and the surface of the inorganic filler is coated with starch. According to the scheme, the interlayer bonding force between printed parts can be effectively improved, and the prepared sintered part has good performance.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a polymer composite material for selective laser sintering 3D printing and its preparation method and application. Background technique [0002] Selective Laser Sintering (Selective Laser Sintering, SLS) refers to a rapid prototyping method that uses infrared lasers as a heat source to sinter powder materials and form three-dimensional parts in a layer-by-layer manner. It can quickly and accurately manufacture complex structures and shapes. Components. The molding principle of SLS technology is: before starting to process, it is necessary to raise the temperature of the studio filled with nitrogen and keep it below the melting point of the powder. Powder material, and then under the control of the computer, the laser beam sinters the powder where the solid part is located according to the cross-sectional profile, melting the powder and forming a solid profile. After the first...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08L25/06C08K13/06C08K9/10C08K3/36C08K3/22C08K5/544C08K5/526B33Y70/10
CPCC08L77/06C08L77/02B33Y70/10C08K2201/005C08K2003/2258C08L25/06C08K13/06C08K9/10C08K3/36C08K3/22C08K5/544C08K5/526
Inventor 岳利俞国金周佩先
Owner 湖南创瑾科技有限公司