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Nylon/carbon nano-tube composite material and preparation method thereof

A carbon nanotube and composite material technology, which is applied in the field of nylon composite materials, can solve the problems of sintered forming parts forming shrinkage rate and mechanical properties difference, the fluidity of composite powder is decreased, and the aspect ratio is large, so as to solve the compatibility problem. , The effect of improving mechanical properties and uniform distribution

Active Publication Date: 2017-01-11
GUANGDONG SILVER AGE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of the above-mentioned fiber materials needs to reach about 30 wt % of the nylon material to have an obvious reinforcing effect, and the above-mentioned fiber materials have a large aspect ratio, and the fluidity of the composite powder will decrease after a large amount of addition, and produce obvious anisotropy. There are obvious differences in the forming shrinkage and mechanical properties of sintered parts in different directions, which affects the application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]The raw materials of the nylon / carbon nanotube composite powder material in this embodiment include the following parts by weight: 100 parts of nylon 12, 1000 parts of organic solvent (the volume ratio of ethanol: methyl ethyl ketone is 97:3), 0.5 parts of carbon nanotubes , 0.14 parts of sodium dodecylbenzene sulfonate, 0.01 parts of emulsifier OP, 0.3 parts of flow aid silica, 0.9 parts of antioxidant 1010, 0.1 part of antioxidant 168.

[0034] The preparation method of above-mentioned nylon / carbon nanotube composite powder material comprises the following steps:

[0035] (1) Weigh 0.5 parts of carbon nanotubes, 0.14 parts of sodium dodecylbenzenesulfonate, and 0.01 parts of emulsifier OP, add them to 200 parts of organic solvents, and ultrasonically disperse them in a constant temperature water bath at 50°C for 6 hours. Finally, a carbon nanotube dispersion with good dispersion effect was obtained.

[0036] (2) The carbon nanotube dispersion in step (1) is added in t...

Embodiment 2

[0038] The raw materials of the nylon / carbon nanotube composite powder material in this embodiment include the following parts by weight: 100 parts of nylon 12, 1000 parts of organic solvent (the volume ratio of ethanol: methyl ethyl ketone is 97:3), 1.0 parts of carbon nanotubes , 0.14 parts of sodium dodecylbenzene sulfonate, 0.01 parts of emulsifier OP, 0.3 parts of flow aid silica, 0.9 parts of antioxidant 1010, 0.1 part of antioxidant 168.

[0039] The preparation method of the above-mentioned nylon / carbon nanotube composite powder material is the same as that of Example 1, and will not be repeated here.

Embodiment 3

[0041] The raw materials of the nylon / carbon nanotube composite powder material in this embodiment include the following parts by weight: 100 parts of nylon 12, 1000 parts of organic solvent (volume ratio of ethanol: methyl ethyl ketone is 97:3), 2.0 parts of carbon nanotubes , 0.14 parts of sodium dodecylbenzene sulfonate, 0.01 parts of emulsifier OP, 0.3 parts of flow aid silica, 0.9 parts of antioxidant 1010, 0.1 part of antioxidant 168.

[0042] The preparation method of the above-mentioned nylon / carbon nanotube composite powder material is the same as that of Example 1, and will not be repeated here.

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Abstract

The invention relates to the technical field of nylon composite materials, and particularly relates to a nylon / carbon nano-tube composite material and a preparation method thereof. The nylon / carbon nano-tube composite powdered material for selective laser sintering (SLS) is prepared from the following components: nylon resin, solvent, carbon nano-tubes, a carbon nano-tube dispersing agent, a flow promoting agent and an antioxidant. The nylon / carbon nano-tube composite powdered material has excellent mechanical performance, the carbon nano-tube has excellent dispersibility, the molded part prepared by sintering SLS has excellent molding effect and excellent size accuracy, and the material is simple in preparation process, environment-friendly and pollution-free.

Description

technical field [0001] The invention relates to the technical field of nylon composite materials, in particular to a nylon / carbon nanotube composite material and a preparation method thereof. Background technique [0002] Selective laser sintering (Selective laser sintering, SLS) technology is a rapid prototyping (Rapid Prototyping, RP) method. SLS applies the idea of ​​layered manufacturing, sintering powder layer by layer by laser and superimposing shaped parts. SLS does not require molds and machining, and can directly process parts of any shape according to the designed 3D model, and SLS can form a variety of materials, including polymers, metals and ceramics. Today, SLS has been widely used in many fields, specifically in high-end fields such as mold manufacturing, medical treatment, construction, automobiles, electrical appliances, aerospace and weaponry. [0003] Nylon is a semi-crystalline polymer with good sintering properties and low melt viscosity. It can be dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L71/02C08K13/06C08K9/04C08K9/02C08K7/24C08K5/42C08K3/36C08K3/22C08K5/134C08K5/526
CPCC08K2201/003C08K2201/004C08K2201/011C08L77/02C08L77/06C08L2201/08C08L2205/02C08L71/02C08K13/06C08K9/04C08K9/02C08K7/24C08K5/42C08K3/36C08K5/1345C08K5/526C08K2003/2227C08K2003/2206
Inventor 汪艳彭梦飞史玉升闫春泽傅轶刘洁魏青松
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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