Unlock instant, AI-driven research and patent intelligence for your innovation.

Conductive polymer composite material and 3D printing molding method thereof

A technology of conductive polymers and polymer materials, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, additive processing, processing and manufacturing, etc., can solve problems such as increasing the viscosity of polymer melts and 3D printing processing difficulties. Achieve the effect of saving filler and improving mechanical properties

Active Publication Date: 2019-12-31
QINGDAO UNIV OF SCI & TECH
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a large amount of filler needs to be added during the preparation process to make the filler form a network structure in the polymer matrix and realize the function of the filler. However, a high concentration of filler will increase the viscosity of the polymer melt and cause difficulties in 3D printing processing.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive polymer composite material and 3D printing molding method thereof
  • Conductive polymer composite material and 3D printing molding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Thermoplastic polyurethane (TPU) is used as the printing substrate. During the printing and forming process, one layer of conductive silver paste is applied for every two layers of printing, and the thickness of each layer of conductive silver paste is 1.2 wedge-shaped grooves. A total of 8 layers were printed and 3 layers of silver glue were applied;

[0020] 2) finally form a cuboid spline with a length of 8 cm, a width of 1 cm, and a thickness of 0.08 cm;

[0021] 3) Using Keithley 2450 touch-type digital source meter, the resistance measured in the length direction of the spline is 3.22Ω, the resistance in the width direction is 2.46Ω, and the resistance in the thickness direction is infinite, showing excellent two-dimensional orientation conduction; connected in the circuit In, can make the small light bulb glow, such as attached figure 2 Shown; test its magnetic shielding effect in the X-band is 15dB;

[0022] 4) Using MU3001B tensile machine to test the ten...

Embodiment 2

[0024] 1) Thermoplastic polyurethane (TPU) is used as the printing substrate. During the printing and forming process, a layer of conductive silver paste is applied for every 4 layers of printing, and the thickness of each layer of conductive silver paste is 1.2 wedge-shaped grooves. A total of 8 layers were printed and 1 layer of silver glue was applied;

[0025] 2) finally form a cuboid spline with a length of 8 cm, a width of 1 cm, and a thickness of 0.08 cm;

[0026] 3) Using Keithley 2450 touch-type digital source meter, the measured resistance of the sample in the length direction is 4.97Ω, the resistance in the width direction is 3.82Ω, and the resistance in the thickness direction is infinite, showing excellent two-dimensional orientation conductivity; In the circuit, it can make the small light bulb glow;

[0027] 4) Using MU3001B tensile machine to carry out tensile performance test on the sample: compared with the sample without silver glue coating, the tensile str...

Embodiment 3

[0029] 1) Thermoplastic polyurethane (TPU) is used as the printing substrate. During the printing process, a thin layer of carbon nanotube ink is coated for every 2 layers printed, and the thickness of each layer of carbon nanotube ink is 1.2 wedge-shaped grooves Thickness, a total of 8 layers are printed in sequence, and 3 layers of carbon nanotube ink are coated;

[0030] 2) finally form a cuboid spline with a length of 8 cm, a width of 1 cm, and a thickness of 0.08 cm;

[0031] 3) Using Keithley 2450 touch-type digital source meter, the measured resistance in the length direction of the sample is 3.49Ω, the resistance in the width direction is 2.5Ω, and the resistance in the thickness direction is infinite, showing two-dimensional orientation conductivity; The direction is connected in the circuit, which can make the small bulb glow; the magnetic shielding effect of the X-band is 32dB;

[0032] 6) Using MU3001B tensile machine to test the tensile properties of the sample: ...

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
Login to View More

PUM

PropertyMeasurementUnit
electrical resistanceaaaaaaaaaa
electrical resistanceaaaaaaaaaa
electrical resistanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel conductive polymer composite material and a 3D printing molding method thereof. The main technical feature is the combination of 3D printing and physical coating. Specifically, a polymer material capable of being used for 3D printing is taken as a substrate, during 3D printing molding, a conductive filler is coated on the inner layer of a print sample, so that the filler forms a network on the inner layer surface of the polymer substrate to obtain the polymer composite material with a conductive function for application in the fields such as static resistance, electrical conductivity, electromagnetic shielding. According to the novel conductive polymer composite material and the 3D printing molding method thereof, the biggest advantage is that the maximum functionalization of the composite material can be achieved by using very few conductive fillers, the cost is saved, and the mechanical properties of the composite material is improved on the original basis; and in addition, because the filler forms the network inside the substrate, changes in the external environment do not affect the function and application of the composite material.

Description

technical field [0001] The invention belongs to the technical field of functional materials, relates to the technical field of conductive polymer composite materials and their preparation, in particular to the field of 3D printing of polymer materials, and the technical field of preparation of conductive polymer composite materials formed by 3D printing. Background technique [0002] With the rapid development of society and the rapid prototyping of new materials, 3D printing is born with the times. Its strong innovation and experimentation will surely become the core and main processing technology of future product design. But at present, there are very few materials designed and formed by 3D printing technology (CN201711141801.X; CN201711345348.4; CN201510922362.0), which has seriously affected the development process of 3D printing technology. Therefore, designing new products using 3D printing technology is a 3D printing technology development needs. [0003] In additio...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/10H01B1/22H01B1/24G01D21/02B33Y10/00
CPCB29C64/10H01B1/22H01B1/24G01D21/02B33Y10/00
Inventor 聂华荣贺爱华韩小龙
Owner QINGDAO UNIV OF SCI & TECH