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
CN108047708BActive Publication Date: 2020-02-07诺思贝瑞新材料科技(苏州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
诺思贝瑞新材料科技(苏州)有限公司
Publication Date
2020-02-07

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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