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

Long-carbon-chain polyamide/carbon nanotube composite material and preparation method thereof, and applications in FDM

A technology of carbon chain polyamide and carbon nanotubes, applied in heat exchange materials, chemical instruments and methods, additive processing, etc., can solve the problems of carbon nanotube agglomeration, less complexes, poor dispersion effect, etc.

Active Publication Date: 2020-04-10
INST OF CHEM CHINESE ACAD OF SCI
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this scheme disperses carbon nanotubes in a liquid medium and then mixes them with nylon resin, the final dispersion effect is not good because the nylon resin is not dispersed, so that the carbon nanotubes in the composite material are partially agglomerated
However, the solution precipitation method used needs to dissolve all the nylon and settle it. Under the same scale of solvent dissolution, the prepared complexes are less
At the same time, the whole process of this method requires better control of temperature, pressure and cooling rate to complete, and the process conditions are relatively complicated.

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
  • Long-carbon-chain polyamide/carbon nanotube composite material and preparation method thereof, and applications in FDM
  • Long-carbon-chain polyamide/carbon nanotube composite material and preparation method thereof, and applications in FDM
  • Long-carbon-chain polyamide/carbon nanotube composite material and preparation method thereof, and applications in FDM

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] In this embodiment, the powder masterbatch of long carbon chain polyamide / carbon nanotubes is first prepared, including the following steps:

[0066] (1) Dissolve 10g of PA12 resin in 100ml of a mixed solvent of dichloromethane and formic acid (1:1), stir in a constant temperature water bath at 30°C at a rate of 400r / min for 12h to obtain a milky white solution;

[0067] (2) Disperse 1 g of multi-walled unmodified carbon nanotubes in a mixed solvent (1:1) of 100 ml of dichloromethane and formic acid, stir for 12 h at a rate of 500 r / min, then ultrasonicate in a water bath for 60 min, and stir again for 5 h to prepare get a suspension;

[0068] (3) Add the suspension obtained in step (2) into the solution obtained in step (1) under stirring conditions, continue to stir at a rate of 500r / min for 6h, then ultrasonicate in a water bath for 60min, and stir again for 5h to obtain mixture;

[0069] (4) Settling the mixture obtained in step (3) in water, and mechanically agit...

Embodiment 2

[0075] In this embodiment, the powder masterbatch of long carbon chain polyamide / carbon nanotubes is first prepared, including the following steps:

[0076] (1) Dissolve 10g of PA12 resin in 100ml of a mixed solvent of dichloromethane and formic acid (1:1), stir in a constant temperature water bath at 30°C at a rate of 400r / min for 12h to obtain a milky white solution;

[0077] (2) Disperse 1 g of multi-walled unmodified carbon nanotubes in a mixed solvent (1:1) of 100 ml of dichloromethane and formic acid, stir for 12 h at a rate of 500 r / min, then ultrasonicate in a water bath for 60 min, and stir again for 5 h to prepare get a suspension;

[0078] (3) Add the suspension obtained in step (2) into the solution obtained in step (1) under stirring conditions, continue to stir at a rate of 500r / min for 6h, then ultrasonicate in a water bath for 60min, and stir again for 5h to obtain mixture;

[0079] (4) Settling the mixture obtained in step (3) in water, and mechanically agit...

Embodiment 3

[0085] In this embodiment, the powder masterbatch of long carbon chain polyamide / carbon nanotubes is first prepared, including the following steps:

[0086] (1) Dissolve 10g of PA12 resin in 100ml of a mixed solvent of dichloromethane and formic acid (1:1), stir in a constant temperature water bath at 30°C at a rate of 400r / min for 12h to obtain a milky white solution;

[0087] (2) Disperse 1 g of multi-walled unmodified carbon nanotubes in a mixed solvent (1:1) of 100 ml of dichloromethane and formic acid, stir for 12 h at a rate of 500 r / min, then ultrasonicate in a water bath for 60 min, and stir again for 5 h to prepare get a suspension;

[0088] (3) Add the suspension obtained in step (2) into the solution obtained in step (1) under stirring conditions, continue to stir at a rate of 500r / min for 6h, then ultrasonicate in a water bath for 60min, and stir again for 5h to obtain mixture;

[0089] (4) Settling the mixture obtained in step (3) in water, and mechanically agit...

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

No PUM Login to View More

Abstract

The invention discloses a long-carbon-chain polyamide / carbon nanotube composite material and a preparation method thereof, and applications in FDM. The composite material comprises the following components in percentage by mass: 85-99% of long-carbon-chain polyamide, 0.1-12% of carbon nanotubes and 0.1-3% of an antioxidant, and comprises a powder master batch formed by compounding long-carbon-chain polyamide and carbon nanotubes, wherein the composite material obtained after melt blending of the powder master batch and long-carbon-chain polyamide is characterized by SEM, the carbon nanotubes are uniformly distributed on any cross section with the area of 25 [mu]m<2>, and the number of the carbon nanotubes is positively correlated with the addition amount of the carbon nanotubes in the composite material. By adding the carbon nanotubes, the tensile modulus, the tensile strength, the thermal conductivity, the electrical conductivity, the dimensional precision and the interface bonding ofthe long-carbon-chain polyamide can be obviously improved, and the variety and the application field of FDM printing wires are widened.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a long carbon chain polyamide / carbon nanotube composite material, its preparation method and its application in FDM. Background technique [0002] 3D printing, scientifically known as additive manufacturing (AM), is a general term for a class of technologies that create objects by accumulating materials layer by layer based on a three-dimensional digital model. The layer-by-layer processing method endows 3D printing technology with sufficient structural design freedom, and shows great technical advantages in the integrated molding of complex structures, lightweight structure design and manufacturing. Compared with traditional material processing and molding methods, 3D printing does not require molds and uses less materials, which greatly reduces the development cycle and production costs of new products. Among them, Fused Deposition Modeling (FDM) is a 3...

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
IPC IPC(8): C08L77/02C08L77/06C08K3/04C08K5/13C08K5/18C08K5/134C09K5/14B33Y70/10
CPCB33Y70/00C08K3/04C08K5/13C08K5/1345C08K5/18C08K2201/001C08K2201/011C08L2201/04C09K5/14C08L77/02C08L77/06
Inventor 苏允兰戚顺新董侠王笃金高霞
Owner INST OF CHEM CHINESE ACAD OF SCI