A preparation method of 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: 2020-02-07
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

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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. preparation method

Method used

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

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Effect test

Embodiment 1

[0042] This embodiment provides a method for preparing a long-chain nylon composite material for 3D printing, comprising the following steps:

[0043] Prepare the following raw materials in parts by weight: 100 parts of long-chain nylon, 5 parts of kevlar chopped fiber, 10 parts of wollastonite, 0.2 part of coupling agent, 3 parts of toughening agent, 0.5 part of hyperbranched resin, and 0.2 part of antioxidant; The kevlar chopped fiber has a length of 2 mm and a diameter of 12 μm; the aspect ratio of the wollastonite needle-like fiber is above 15; the long-chain nylon is PA11; the coupling agent is a silane coupling agent, and the structural formula is 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;

[0044] Prepare the coupling agent solution with ethanol, and adjust its pH value to between 4-5.5;

[0045] Spray the wollastonite into the atomized ...

Embodiment 2

[0050] This embodiment provides a method for preparing a long-chain nylon composite material for 3D printing, comprising the following steps:

[0051] Prepare the following raw materials in parts by weight: 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, and 0.4 part of antioxidant; The kevlar chopped fiber has a length of 3 mm and a diameter of 10 μm; the aspect ratio of the wollastonite needle-like fiber is above 15; the long-chain nylon is PA1012; the coupling agent is a silane coupling agent, structural formula for NH 2 (CH 2 ) 3 Si(OCH 3 ) 3 ; The toughening agent is maleic anhydride grafted EPDM rubber; the hyperbranched resin is Hyper H402; the antioxidant is antioxidant 330;

[0052] Prepare the coupling agent solution with water, and adjust its pH value to between 4-5.5;

[0053] Spray the wollastonite into the atomized coupling agen...

Embodiment 3

[0058] This embodiment provides a method for preparing a long-chain nylon composite material for 3D printing, comprising the following steps:

[0059] Prepare the following raw materials in parts by weight: 100 parts of long-chain nylon, 8 parts of kevlar chopped fiber, 15 parts of wollastonite, 0.3 part of coupling agent, 3 parts of toughening agent, 0.7 part of hyperbranched resin, and 1 part of antioxidant; The kevlar chopped fiber has a length of 2.5 mm and a diameter of 12 μm; the aspect ratio of the wollastonite needle-like fiber is above 15; the long-chain nylon is PA1212; the coupling agent is a silane coupling agent, the structural formula for The toughening agent is maleic anhydride grafted EPDM rubber; the hyperbranched resin is Hyper H401; the antioxidant is antioxidant 1790;

[0060] Prepare the coupling agent solution with ethanol, and adjust its pH value to between 4-5.5;

[0061] Spray the wollastonite into the atomized coupling agent solution while stirring...

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Abstract

The invention relates to a preparing method of a long-chain nylon compound material for 3D printing. The preparing method comprises the following steps of preparing, by weight, 100 parts of long-chainnylon, 5-10 parts of kevlar chopped fiber, 5-15 parts of wollastonite, 0.1-0.3 part of coupler, 3-8 parts of flexibilizer, 0.5-1 part of hyperbranched resin and 0.2-1 part of antioxygen; spraying a coupling agent solution while stirring wollastonite, and conducting drying and cooling; uniformly mixing coupling-agent-modified wollastonite, the long-chain nylon, the kevlar chopped fiber, the flexibilizer, hyperbranched resin and antioxygen; adding a premixed raw material into a double-screw extruder for extrusion pelleting to obtain modified particles; adding the dried modified particles into asingle screw extruder to extrude out a plastic melt, and conducting hot water and cold water treatment to obtain wires. The preparing method is suitable for large-batch production, the prepared printing product has no obvious exposed fiber, the stretching strength, the bending strength and the thermal deformation temperature are high, and the size is stable.

Description

technical field [0001] The invention relates to a method for preparing a long-chain nylon composite material for 3D printing, and belongs to the technical field of material preparation 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L77/10C08L51/04C08L23/08C08K9/06C08K7/10C08K5/134B29C48/92B33Y70/00
CPCB29C48/92B29C2948/92704B33Y70/00C08K2201/016C08L77/02C08L77/06C08L2201/08C08L2205/035C08L2205/16C08L77/10C08L51/04C08L51/003C08L23/0869C08K9/06C08K7/10C08K5/1345
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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