Preparation method of conductive 3D printing supplies by using double screw extruder

A twin-screw extrusion and 3D printing technology, which is applied in the field of 3D printing consumables, can solve the problems of material brittleness, large amount of nano-conductive agent, and poor ductility, so as to achieve good electrical conductivity and mechanical properties and reduce material costs. , the effect of preventing the resin from becoming brittle

Active Publication Date: 2016-05-04
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the amount of nano-conductive agent needed to prepare conductive printing consumables is often large, which will make the material brittle and poor in ductility
In addition, the price of nano-conductive materia

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] (1) Weigh 4g of multi-walled carbon nanotubes and place them in a 100ml beaker, add 50ml of acetone, stir while adding, mix evenly into ink, and prepare multi-walled carbon nanotubes acetone dispersion.

[0015] (2) take by weighing 96g acrylonitrile-butadiene-styrene copolymer (ABS) particle and add in the airtight stirring tank, in stirring process, the multi-walled carbon nanotube acetone dispersion liquid that step (1) makes is equably Spray on the surface of the ABS particles, after the dispersion solution is sprayed, continue to stir for 10 minutes to prepare the ABS particles coated with the multi-walled carbon nanotube dispersion solution.

[0016] (3) The ABS particles coated with the multi-walled carbon nanotube dispersion liquid obtained in step (2) are put into a constant temperature drying oven and dried at 80° C. for 5 hours, then directly added to the feed bin of a twin-screw extruder, and the double-screw extruder is opened. Screw extruder, controlled he...

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PUM

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Abstract

The invention discloses a preparation method of conductive 3D printing supplies by using a double screw extruder. The method is as below: dispersing multi-walled carbon nanotubes in acetone, mixing uniformly into an ink-like state; adding a thermoplastic resin particles in a stirring tank, uniformly spraying the multi-walled carbon nanotube acetone dispersion liquid on the surface of the resin particles in the stirring process, and continuing stirring; taking out the thermoplastic resin particles coated by the multiple-walled carbon nanotube dispersion liquid, putting in a constant temperature drying box, and drying at the temperature of 60-80 DEG C for 2-6 h; directly adding the dried multi-walled carbon nanotube / resin composite particles into the hopper of a double screw extruder, extruding continuously and uniformly, and adjusting the traction force and traction speed to control the diameter of an extrudateat 1.75mm or 3.0mm, so as to finally obtain the conductive 3D printing supplies. The method of the present invention is simple to operate, and the obtained conductive 3D printing supplies have both good conductivity and mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of 3D printing consumables, in particular to a method for preparing conductive 3D printing consumables by using a twin-screw extruder. Background technique [0002] Different from traditional material processing methods, additive manufacturing is mainly based on 3D CAD model data. By adding materials and manufacturing layer by layer, a 3D physical entity that is completely consistent with the corresponding mathematical model is directly produced, commonly known as "3D printing" or "3D printing". . Because it can automatically, directly, quickly and accurately transform design ideas into prototypes with certain functions or directly manufacture parts, it provides a high-efficiency and low-cost implementation method for parts prototype production and verification of new design ideas. 3D printing is widely used in the fields of electronic products, automobiles, aerospace, medical treatment, military industry, ...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L67/04C08L23/06C08L27/06C08L25/06C08L77/00C08L59/00C08L69/00C08L71/12C08L81/06C08K7/24
CPCC08K7/24C08K2201/001C08K2201/011C08K2201/013C08L55/02
Inventor 罗鲲诸葛祥群郭珺罗志虹杨超徐旭
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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