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Method for preparing graphene enhanced master batch by electrostatic spinning and stretching

A technology of electrospinning and reinforced masterbatch, which is applied in the manufacture of rayon, textiles and paper, and single-component polyolefin artificial filaments, etc. It can solve the problems of difficulty in uniform dispersion of graphene, complicated process, and high cost, and achieve cost-effective Low cost, simple operation, uniform dispersion effect

Inactive Publication Date: 2017-12-01
CHENDU NEW KELI CHEM SCI CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing graphene-reinforced masterbatch by electrospinning and stretching, which can solve the difficulty of uniformly dispersing graphene in the polymer matrix by traditional methods, and the general method for solving such problems has a technical The disadvantages of complexity and high cost, the most important thing is that the creative application of electrospinning for stretching can ensure the uniform dispersion of graphene while ensuring the high quality and high efficiency of graphene-enhanced masterbatch

Method used

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  • Method for preparing graphene enhanced master batch by electrostatic spinning and stretching

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Embodiment 1

[0028] A method for preparing a graphene reinforced masterbatch by electrospinning stretching, the specific process of preparing the reinforced masterbatch is as follows:

[0029]First, add 0.08 kg of flake graphite to 1 L of a mixed solution of N,N-dimethylacetamide and deionized water with a volume concentration of 50%, ultrasonically treat it for 5 minutes, and then add 0.4 kg of sodium bisulfite while stirring magnetically. , raise the temperature to 90°C, react for 4 hours, filter, wash and dry for use. Mix 20kg of treated graphite with 200kg of low-density polyethylene masterbatch, place in a high-speed mixer, heat up to 90°C, and mix for 20min at a speed of 100r / min. Then, an electrospinning device with heating function was used to adjust the spinning distance to 11 cm. Heat the barrel to 320°C. After the temperature rises stably, put the mixture of graphite and low-density polyethylene masterbatch into the barrel, heat for 10 minutes, until the molten material starts ...

Embodiment 2

[0032] First, add 0.1 kg of flake graphite to 1 L of a mixed solution of N,N-dimethylacetamide and deionized water with a volume concentration of 60%, ultrasonically treat it for 10 minutes, and then add 0.5 kg of sodium bisulfite while stirring magnetically , raise the temperature to 95°C, react for 3 hours, filter, wash and dry for use. Mix 15kg of treated graphite with 200kg of low-density polyethylene masterbatch, place in a high-speed mixer, heat up to 85°C, and mix for 25min at a speed of 100r / min. Then, an electrospinning device with heating function was used to adjust the spinning distance to 14 cm. Heat the barrel to 330°C. After the temperature rises stably, put the mixture of graphite and low-density polyethylene masterbatch into the barrel, heat for 15 minutes, until the molten material starts to drip, and adjust the inclination of the nozzle until the molten material just does not fall drop. Then turn on the high-voltage power supply and apply a 50KV high-voltag...

Embodiment 3

[0035] First, add 0.12 kg of flake graphite to 1 L of a mixed solution of N,N-dimethylacetamide and deionized water with a volume concentration of 70%, ultrasonically treat it for 5 minutes, and then add 0.6 kg of sodium bisulfite while stirring magnetically , raise the temperature to 100°C, react for 2.5 hours, filter, wash and dry for use. Mix 10kg of treated graphite with 200kg of polypropylene masterbatch, place in a high-speed mixer, heat up to 80°C, and mix for 30min at a speed of 100r / min. Then, an electrospinning device with heating function was used to adjust the spinning distance to 16 cm. Heat the barrel to 350°C. After the temperature rises stably, put the mixture of graphite and polypropylene masterbatch into the barrel and heat for 10 minutes until the molten material starts to drip. Adjust the inclination of the nozzle until the molten material just stops dripping. Then turn on the high-voltage power supply and apply a 60KV high-voltage electric field to it, an...

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Abstract

The invention belongs to the technical field of graphene reinforced masterbatch preparation and provides a method for preparing graphene reinforced masterbatch by electrospinning and stretching. In this method, graphite is exfoliated into graphene through repeated electrospinning and stretched, and dispersed in a polymer resin to form a graphene-reinforced masterbatch. Integrating the preparation and dispersion of graphene, the obtained graphene-reinforced masterbatch graphene has high quality and uniform dispersion, and can be widely used in the reinforcement of plastics and rubber. The preparation of the graphene masterbatch by the method causes little damage to the graphene, so that the interface enhancement function of the graphene can be fully brought into play. Compared with the traditional method, the invention has simple process and low cost, and can ensure the high quality and uniform dispersion of graphene in the graphene-enhanced masterbatch.

Description

technical field [0001] The invention relates to the field of preparation of graphene-reinforced masterbatch, in particular to a method for preparing graphene-reinforced masterbatch by electrospinning and stretching. Background technique [0002] Graphene is a new carbonaceous material with a two-dimensional honeycomb lattice structure formed by sp2 hybridized carbon atoms, and its thickness can be single layer or several layers. In 2004, British scientists Geim and Novoselov et al. theoretically confirmed the existence of graphene single crystals, and used the method of stripping highly oriented graphite with adhesive tape to obtain two-dimensional graphene sheets that can truly exist independently, thus setting off scientific research on graphene. And the upsurge of engineering applications. Its thickness is only one carbon atom, and it is the thinnest, hardest and most ductile material known in the world. Graphene has high strength, and the strong force between carbon at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L23/06C08L23/12C08K3/04C08J3/22D01F6/46D01F1/10
CPCC08L55/02C08J3/226C08J2355/02C08J2423/06C08L2207/066D01F1/10D01F6/46
Inventor 陈庆王镭迪曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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