Preparation method of special graphene master batch for automobile engineering plastic

A technology of automotive engineering and graphene, which is applied in the field of preparation of graphene masterbatch for automotive engineering plastics, can solve problems such as poor fluidity and difficulty in graphene dispersion, solve dispersion problems, easily realize large-scale industrial production, and good processing The effect of mobility

Active Publication Date: 2017-08-08
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, automotive engineering plastics usually have poor fluidity, and it is more difficult for graphene to disperse in them

Method used

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  • Preparation method of special graphene master batch for automobile engineering plastic

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Blend and shake 10 parts by weight of calcium carbonate microspheres with a particle size of 5 μm, a pore size of 250 nm, and a sphericity greater than 0.85 and 0.3 parts by weight of polyamide wax, and set the vibration frequency to 10 Hz, and then modify the surface The porous calcium carbonate microspheres are subjected to conventional centrifugation screening, the centrifugal speed is 300 rpm, the microspheres broken by vibration are removed, and the surface-modified calcium carbonate microspheres with a sphericity greater than 0.85 are obtained;

[0036](2) Add surface-modified calcium carbonate microspheres into the pressure vessel, add 50 parts by weight of graphene slurry, the solvent is water, the mass concentration is 10%, and the solute graphene is single-layer graphene and Multi-layer graphene mixed powder, the particle size of the powder is 100nm, the thickness is less than 1.6nm, stir evenly, let stand for 10-30 min, add static pressure 20 MPa to the li...

Embodiment 2

[0041] (1) Blend and shake 15 parts by weight of barium sulfate microspheres with a particle size of 10 μm and a pore size of 250 nm and a sphericity greater than 0.85 and 0.5 parts by weight of polyamide wax evenly, set the vibration frequency to 35 Hz, and then modify the surface The porous microspheres are conventionally screened by centrifugation at a rotational speed of 130 rpm to remove the broken microspheres and obtain intact surface-modified barium sulfate microspheres;

[0042] (2) Add surface-modified barium sulfate microspheres into the pressure vessel, add graphene slurry with a weight part of 60, the solvent is water, and the graphene slurry with a solute mass concentration of 15%, wherein the solute graphene is Reduced graphene oxide powder, the particle size of the powder is less than or equal to 100nm, the thickness is 0.4nm, stir evenly, let it stand for 30 minutes, apply a static pressure of 10 MPa to the liquid at a pressurization speed of 0.05 MPa / min, and ...

Embodiment 3

[0047] (1) Blend and shake 12 parts by weight of silica microspheres with a particle size of 5 μm, a pore size of 200 nm, and a sphericity greater than 0.9 and 1 part by weight of phthalate, and set the vibration frequency to 35 Hz. Then carry out conventional centrifugation screening on the surface-modified silica porous microspheres, the centrifugation speed is 250 rpm, remove the microspheres broken by vibration, and obtain intact surface-modified silica microspheres;

[0048] (2) Add surface-modified silica microspheres into the pressure vessel, add 70 parts by weight of graphene slurry, the solvent is water, and the graphene slurry with a mass concentration of 18%, wherein the solute graphene is graphite Graphene nanoribbon and graphene nanosheet mixed powder, the particle size of the powder is less than or equal to 100nm, the thickness is 1.0nm, stir evenly, let it stand for 25 minutes, and apply a static pressure of 10 MPa to the liquid at a pressurization speed of 0.05M...

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Abstract

The invention provides a preparation method of a special graphene master batch for automobile engineering plastic. The preparation method comprises the following steps of enabling graphene slurry to pre-compound with porous microspheres, enabling the porous microspheres to carry graphene, adding silane-terminated polyurethane prepolymer, and performing high-pressure spraying and polymerizing connection; dispersing into carrier resin, and granulating, so as to obtain the graphene master batch. The preparation method has the advantages that the technical defect of failure to effectively improve dispersion property in the production, processing and use process of the automobile engineering plastic in the prior art is overcome, the good dispersion effect in the automobile engineering plastic is realized, the high-strength reduction function in the automobile engineering plastic is realized, and the graphene master batch is the key material for the automobile engineering plastic; in particular, the graphene master batch has high fluidity due to existence of microsphere with high degree of sphericity, is especial for the automobile engineering plastic, and can overcome the defect of difficulty in flowing and dispersion of the conventional graphene master batch; the preparation technology is simple, and the scaled industrialized production can be easily realized.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a method for preparing graphene masterbatch special for automotive engineering plastics. Background technique [0002] With the rise of automobile lightweight, the use of automotive plastic parts is increasing. Developed countries regard the amount of plastic used in automobiles as an important indicator to measure the level of automobile design and manufacturing. German automobile plastics account for 15% of the overall material. In recent years, my country's automobile industry has developed rapidly. At present, the annual output of automobiles exceeds 4 million. Referring to foreign trends, the annual use of modified plastics in the automobile industry will exceed 500,000 tons, of which engineering plastics account for a large proportion. kinds of parts. However, in the face of the development trend of lightweight and high-strength automobiles, the modification of existing e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L75/04C08L77/00C08L55/02C08L91/00C08L23/12C08K9/12C08K7/24C08K9/06C08K3/04C08K7/26
CPCC08K3/04C08K7/24C08K7/26C08K9/08C08K9/12C08L55/02C08L69/00C08L75/04C08L77/00C08L2205/03C08L91/00C08L23/12
Inventor 陈庆王镭迪曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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