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A long-chain nylon composite material for 3D printing

A long-chain nylon and composite material technology, applied in the direction of additive processing, etc., can solve problems such as poor strength, low heat resistance temperature, and large shrinkage rate, and achieve high thermal deformation temperature, lower melt viscosity, and low thermal deformation. Effect

Active Publication Date: 2020-03-06
诺思贝瑞新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a long-chain nylon composite material for 3D printing in order to solve the technical problems of poor strength, low heat-resistant temperature, and large shrinkage of existing nylon materials for 3D printing.

Method used

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  • A long-chain nylon composite material for 3D printing
  • A long-chain nylon composite material for 3D printing

Examples

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Effect test

Embodiment 1

[0037] This embodiment provides a long-chain nylon composite material for 3D printing, comprising the following components by weight:

[0038] 100 parts of long-chain nylon, 5 parts of kevlar chopped fiber, 10 parts of wollastonite, 0.2 parts of coupling agent, 3 parts of toughening agent, 0.5 part of hyperbranched resin, 0.2 part of antioxidant; 2mm and 12μm in diameter; the aspect ratio of the wollastonite needle-like fibers is above 15; the long-chain nylon is PA11; the coupling agent is a silane coupling agent with a structural formula of NH 2 (CH 2 ) 3 Si(OC 2 h 5 ) 3 The toughening agent is maleic anhydride grafted EPDM rubber; the hyperbranched resin is Hyper C100; the antioxidant is antioxidant 1076.

Embodiment 3

[0039] The preparation method of the long-chain nylon composite material for 3D printing in this embodiment comprises the following steps:

[0040] Prepare the coupling agent solution with ethanol, and adjust its pH value to between 4-5.5;

[0041] Spray the wollastonite into the atomized coupling agent solution while stirring at a speed of 100r / min, continue stirring for 5 minutes after spraying the coupling agent, and then put the wollastonite soaked with the coupling agent on the surface of the obtained wollastonite at 120 Bake at ℃ for 2.5 hours and cool to room temperature to obtain wollastonite modified by coupling agent;

[0042] Stir and mix long-chain nylon, toughening agent, hyperbranched resin, antioxidant, kevlar chopped fibers and coupling agent modified wollastonite for 15 minutes at a speed of 100r / min to obtain a premixed raw material;

[0043] The premixed raw materials are added from the main feeding port at the first zone of the twin-screw extruder, and the...

Embodiment 2

[0046] This embodiment provides a long-chain nylon composite material for 3D printing, comprising the following components by weight:

[0047] 100 parts of long-chain nylon, 7 parts of kevlar chopped fiber, 5 parts of wollastonite, 0.1 part of coupling agent, 7 parts of toughening agent, 0.7 part of hyperbranched resin, 0.4 part of antioxidant; 3mm and a diameter of 10μm; the aspect ratio of the wollastonite needle-like fibers is above 15; the long-chain nylon is PA1012; the coupling agent is a silane coupling agent with a structural formula of NH 2 (CH 2 ) 3 Si(OCH 3 ) 3 The toughening agent is maleic anhydride grafted EPDM rubber; the hyperbranched resin is HyperH402; the antioxidant is antioxidant 330.

[0048] The preparation method of the long-chain nylon composite material for 3D printing in this embodiment comprises the following steps:

[0049] Prepare the coupling agent solution with water, and adjust its pH value to between 4-5.5;

[0050] Spray the wollastonit...

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Abstract

The invention relates to a long-chain nylon composite material for 3D printing. The long-chain nylon composite material for 3D printing comprises, by weight, 100 parts of long-chain nylon, 5-10 partsof kevlar short-cut fibers, 5-15 parts of wollastonite, 0.1-0.3 part of a coupling agent, 3-8 parts of a toughening agent, 0.5-1 part of hyperbranched resin and 0.2-1 part of an antioxidant. Wires andprinted products have no obvious fiber exposure, and the printed products also have the advantages of high tensile strength, high bending strength, high thermal deformation temperature and stable sizes.

Description

technical field [0001] The invention relates to a long-chain nylon composite material for 3D printing, belonging to the technical field of materials for 3D printing. Background technique [0002] 3D printing technology is profoundly changing the process of modern manufacturing. It does not require traditional tools, fixtures and machine tools, but is based on digital model files, using powdered metal or plastic and other bondable materials, through layer-by-layer printing. The technology of constructing objects by printing, which is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and There are applications in other fields. [0003] Fused deposition (FDM) technology is a commonly used technology in 3D printing. This technology uses thermoplastic polymers to be extruded from the printing nozzle in a molten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L77/10C08L51/04C08L23/08C08L101/00C08K9/06C08K7/10B33Y70/10
CPCB33Y70/00C08K2201/003C08K2201/004C08K2201/016C08L77/02C08L77/06C08L2201/08C08L2205/02C08L2205/035C08L2205/16C08L77/10C08L51/04C08L101/005C08K9/06C08K7/10C08L51/003C08L23/0869
Inventor 李振茅伟华王立根颜岩梁雪娇
Owner 诺思贝瑞新材料科技(苏州)有限公司
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