Graphene/nylon composite material and its preparation method and application

A nylon composite material and graphene technology, which is applied in the field of graphene/nylon composite material and its preparation, can solve the problem of small graphene texture sheet size, achieve uniform particle size distribution, improve mechanical strength performance, and good 3D printing effect Effect

Active Publication Date: 2016-09-28
SUISHEN TEC (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that graphene is too light and the sheet diameter is too small, it is difficult to directly use this material for molding and manufacturing in existing 3D printing technology.

Method used

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Examples

Experimental program
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Embodiment

[0030] A kind of graphene / nylon composite material of the present invention, comprises the component of following mass fraction:

[0031] Nylon powder 97.5%,

[0032] Graphene 0.5%,

[0033] Silica 1.5%,

[0034] Titanium dioxide 0.3%,

[0035] Antioxidant 2246 0.2%.

[0036] In this embodiment, the graphene / nylon composite material has an initial melting point of 180° C., a melting range of 2° C. to 4° C., a bending strength of 70 MPa, a tensile strength of 75 MPa, and a hardness of 87 HV.

[0037] In this embodiment, the nylon powder is prepared from nylon 12 (ie, PA12) pellets, and the nylon powder is in a regular spherical shape with a particle size ranging from 40 μm to 70 μm.

[0038] In this embodiment, the performance parameters of graphene are: the sheet diameter is 2.6 microns, the light absorption rate is 2.3%, the thermal conductivity is 5300W / (m K) (higher than diamond and carbon nanotubes), and the electron mobility at room temperature >15000cm 2 / (V·s) (hig...

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Abstract

The invention discloses a graphene / nylon composite material and a preparation method thereof. The composite material comprises the following components in mass fraction: 97.5%-98.5% of nylon powder, 0.4%-0.6% of graphene, 0.7%-1.8% of a flow aid and 0.2%-0.5% of an antioxidant. The preparation method comprises the steps of (1) carrying out heat treatment on a nylon raw material to obtain a treated nylon material; (2) immersing the treated nylon material in a solvent, distilling to remove water, adding a catalyst and an activator and treating to obtain nylon powder; and (3) placing the flow aid, antioxidant, nylon powder and graphene in a sealed stirrer and carrying out high speed stirring to obtain the graphene / nylon composite material. The composite material disclosed by the invention has the advantages of relatively high hardness, tensile strength and bending strength and can be well applied in 3D printing, a physical doping method can be adopted in the preparation method to avoid the damage to the material caused by the chemical doping and the environmental friendliness is achieved.

Description

technical field [0001] The invention relates to a 3D printing material and a preparation method thereof, in particular to a graphene / nylon composite material, a preparation method thereof and an application in 3D printing. Background technique [0002] 3D printing is a kind of "additive manufacturing technology", which has obvious advantages such as low manufacturing cost and short production cycle, and is known as "the most iconic production tool of the third industrial revolution". Different from the traditional material removal processing technology, 3D printing turns multi-dimensional manufacturing into a simple bottom-up two-dimensional superposition, which greatly reduces the complexity of design and manufacturing. However, it is also due to the forming principle of 3D printing that the lateral force of the formed object is often greatly reduced. In addition, the 3D printing polymer powder material needs to be formed by laser sintering, and unevenness and voids will in...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/02C08L77/06C08K3/04C08K3/34C08K3/36C08K3/22C08K5/13
CPCC08K3/04C08K13/02C08K2201/003C08L77/02
Inventor 刘原纲彭孜杨贺轩肖珂
Owner SUISHEN TEC (BEIJING) CO LTD
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