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Graphene/carbon black thermoplastic resin master batch with high dispersibility and preparation method thereof

A thermoplastic resin, high dispersion technology, applied in the field of graphene masterbatch and its preparation, can solve the problems of difficult processing, uneven powder dispersion, dust pollution, etc., and achieve the effect of solving the difficulty of feeding and avoiding agglomeration

Active Publication Date: 2014-03-19
XIAMEN KNANO GRAPHENE TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining the obtained composite powder with resin to prepare a masterbatch can also solve many problems caused by graphene powder in the practical application of modified plastics: graphene powder is fluffy, difficult to process directly by extrusion, and consumes energy Large; difficulty in powder feeding, uneven dispersion of powder in plastic, unstable product performance, dust pollution

Method used

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Effect test

preparation example Construction

[0042] A kind of preparation method of the graphene / carbon black thermoplastic resin masterbatch with high dispersibility disclosed by the present invention, concrete steps comprise:

[0043] Step 1, the preparation of graphene / carbon black composite: carry out surface modification treatment to graphene with surfactant, regulate the electrification of graphene surface, obtain the graphene of surface positive charge property and disperse, dispersion time is 0.5 -20 hours; add graphene coated with active agent on the surface to the carbon black solution, after uniform dispersion, press filter and dry to obtain the graphene / carbon black electrostatic self-assembly compound, the dispersion time is 0.5-20 hours;

[0044] Step 2, the preparation of graphene / carbon black / thermoplastic resin:

[0045] solution blending

[0046] ①Configure the polymer mixed solution: control the proportion of the solvent, dissolve the masterbatch carrier in the solvent to make a mixed solution, and th...

Embodiment 1

[0080] A kind of preparation method of graphene / carbon black thermoplastic resin masterbatch with high dispersibility adopts solution blending method, realizes by following steps:

[0081] Step 1. Adjust the surface electrical properties of graphene: add 10g of cetyltrimethylammonium bromide, 5kg of water and 200g of graphene to a sand mill, and after sanding for 3 hours, filter to obtain graphene with a positive surface Uniform dispersion. The graphene is dispersed in water and hydraulically filtered, dried, and dispersed to obtain graphene coated with a surfactant.

[0082] Step 2. Preparation of graphene / carbon black composite: 125g of carbon black was added to 5000ml of water to form a carbon black solution. Slowly add the positively charged graphene on the surface prepared above to the carbon black solution in a sand mill, and electrostatically adsorb to form a graphene / carbon black composite. After sanding for 2 hours, press filter, dry, and disperse Graphene / carbon bl...

Embodiment 2

[0088] A kind of preparation method of graphene / carbon black thermoplastic resin masterbatch with high dispersibility, adopts in-situ polymerization method, realizes by following steps:

[0089] Step 1. Adjust the surface electrical properties of graphene: Add 16g of octadecyltrimethylammonium bromide, 5kg of water and 200g of graphene into a sand mill, and after sanding for 4 hours, filter to obtain graphene with a positive surface charge Uniform dispersion. The graphene is dispersed in water and hydraulically filtered, dried, and dispersed to obtain graphene coated with a surfactant.

[0090] Step 2. Preparation of graphene / carbon black composite: 50 g of carbon black was added to 5000 ml of water to form a carbon black solution. Slowly add the above-mentioned positively charged graphene on the surface to the carbon black solution in the sand mill, electrostatic adsorption forms a graphene / carbon black composite, after sanding for 5 hours, press filter and dry to disperse g...

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Abstract

The invention discloses a graphene / carbon black thermoplastic resin master batch with high dispersibility and a preparation method thereof. The graphene / carbon black compound in the master batch is formed in an electrostatic self-assembly manner, and comprises 10-50% of graphene, 5-20% of carbon black, 0.5-10% of surfactant, 10-65% of carrier resin and 2-10% of assistant. The preparation method comprises the following steps: (1) compounding and dispersing graphene by adopting the surfactant to control the positive electricity of the graphene surface; (2) forming a stable graphene / carbon black compound from the modified graphene and carbon black with positive electricity through electrostatic incorporation in a self-assembly manner; (3) preparing the graphene / carbon black thermoplastic resin master batch with high dispersibility by matching with a solution blended process, a melt-blending method and an in-situ polymerization method; (4) adding the assistant to extrude and pelletize, so as to prepare the graphene / carbon black / thermoplastic resin master batch particles after processing the master batch. By adopting the obtained master batch, the problems of difficult charging of graphene powder, uneven dispersion, dust pollution, unstable product performance and the like are solved.

Description

technical field [0001] The invention relates to a graphene masterbatch used in thermoplastic material processing and its preparation technology, in particular to a highly dispersed graphene / carbon black thermoplastic resin masterbatch and its preparation method. Background technique [0002] Since 2004, Andre Geim and Konstantin Novoselov of the University of Manchester in the United Kingdom successfully obtained graphene for the first time through micromechanical exfoliation in experiments, graphene has become a material. It is one of the research hotspots in interdisciplinary fields such as science, information science, new energy, and chemistry. The strength of graphene is the highest among the tested materials, reaching 130Gpa, more than 100 times that of steel (Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene, Science, 2008, 321:385-388), and has very high electrical conductivity rate and thermal conductivity, respectively up to 6000S / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L55/02C08L69/00C08L23/12C08L23/06C08L27/06C08K9/10C08K3/04C08J3/22
Inventor 赵立平洪江彬江龙迎方崇卿邱淑璇
Owner XIAMEN KNANO GRAPHENE TECH CORP
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