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Graphene modified carbon fiber emulsion sizing agent and preparation method thereof

A technology of graphene modification and carbon fiber, which is applied in the fields of carbon fiber, fiber treatment, textiles and paper making, etc. It can solve the problems of serious environmental pollution in the workshop, achieve simple process, optimize interface performance and macroscopic performance, and improve the effect of interface performance

Inactive Publication Date: 2011-10-05
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since solvent-based sizing agents require a large amount of organic solvents, and the workshop environment is seriously polluted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] step (1) at 30 o Under C, dissolve 10 kg of epoxy resin (grade 601) in 3 kg of acetone to form an organic resin solution;

[0018] Step (2) After the organic resin solution is down to normal temperature, 0.2 kilogram of emulsifier polyoxyethylene sorbitan monooleate (Tweer81), 0.05 kilogram of lubricant fatty alcohol polyoxyethylene ether (O-10) and 1 kilogram Deionized water is mixed evenly and added to the organic resin solution, and stirred with a dispersing emulsifier until the phase transfer occurs in the mixed system. The rotating speed of the dispersing emulsifier is 10000rpm; after continuing to stir for 30 minutes, add deionized water until the solid content of the mixed system is 50%, and the obtained Organic resin emulsion.

[0019] Step (3) Slowly add 5 grams of single-layer graphene into the organic resin emulsion, stir evenly; then continue to add deionized water, dilute the mixed system to a solid content of 5%, and obtain a graphene-modified sizing agen...

Embodiment 2

[0022] step (1) at 40 o Under C, 10 kilograms of epoxy resins (grades 618 and AG-80) were dissolved in 4 kilograms of acetone to form an organic resin solution, wherein the mass ratio of epoxy resins 618 and AG-80 was 50:50.

[0023] Step (2) After the organic resin solution is lowered to normal temperature, 0.2 kg of emulsifier polyoxyethylene sorbitan trioleate (Tweer85), 0.1 kg of lubricant higher fatty alcohol (octadecan-9-enol) and 1 Mix one kilogram of deionized water evenly into the organic resin solution, and stir with a dispersing emulsifier until the phase transfer occurs in the mixed system. The rotating speed of the dispersing and emulsifying machine is 12000rpm; after continuing to stir for 50min, add deionized water until the solid content of the mixed system is 40%. Obtain organic resin emulsion.

[0024] Step (3) Slowly add 50 grams of single-layer graphene oxide with polar groups such as hydroxyl, epoxy and carboxyl groups on the surface into the organic resi...

Embodiment 3

[0026] step (1) at 40 o C, 10 kg of epoxy resins (grades 601 and 618) were dissolved in 3 kg of 2-butanone to form an organic resin solution, wherein the mass ratio of epoxy resins 601 and 618 was 60:40.

[0027] Step (2) After the organic resin solution is lowered to normal temperature, 1 kg of emulsifier alkylphenol polyoxyethylene ether (Igegal CA-630), 0.2 kg of lubricant advanced fatty amine (octadecylamine primary amine) and 3 kg of Mix the ionic water evenly and add it to the organic resin solution, and stir it with a dispersing emulsifier until the phase transfer occurs in the mixed system. resin emulsion.

[0028]Step (3) 20 grams of single-layer butanediamine-modified graphene with amine polar groups on the surface are slowly added to the organic resin emulsion, and stirred evenly; then continue to add deionized water, and the mixed system is diluted to solid The content is 0.5%, and the graphene modified sizing agent is prepared.

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Abstract

The invention relates to a graphene modified carbon fiber emulsion sizing agent and a preparation method thereof. The conventional solvent sizing agent is not environment-friendly. The sizing agent is a mixed system consisting of organic resin, an emulsifying agent, a lubricating agent, graphene, an organic solvent and deionized water, wherein the emulsifying agent, the lubricating agent, the graphene and the organic solvent are respectively 2 to 14 percent, 0.5 to 2 percent, 0.05 to 1 percent and 30 to 200 percent based on the mass of the organic resin; and the solid content of the mixed system is 0.1 to 5 percent. The preparation method of the sizing agent comprises the following steps of: dissolving the organic resin in the organic solvent to form organic resin solution, adding the emulsifying agent, the lubricating agent and the deionized water into the organic resin solution, and stirring until the mixed system is subjected to phase transfer; adding the deionized water until the solid content is 30 to 50 percent to obtain organic resin emulsion; and adding the graphene into the organic resin emulsion, and adding the deionized water to dilute the mixed system until the solid content is 0.1 to 5 percent so as to obtain the graphene modified sizing agent. The method is simple and reliable, and the prepared graphene modified sizing agent can well protect carbon fibers and effectively improve the interface property of the carbon fibers and matrix resin.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a functional carbon fiber sizing agent and a preparation method thereof. The sizing agent can effectively improve the performance of the carbon fiber, and can also improve the interfacial performance between the carbon fiber and the matrix resin. Background technique [0002] Carbon fiber has a series of excellent properties such as high specific strength, high specific modulus, and high temperature resistance, and has been widely used in fiber-reinforced resin-based composite materials. However, carbon fiber is a brittle material, and it is easy to cause wool and monofilament to break during production and processing, which reduces the strength of carbon fiber and affects the mechanical properties of composite materials. In addition, carbon fiber has a graphite turbostratic structure with high surface inertness and few chemically active functional groups, resulting in...

Claims

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Application Information

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IPC IPC(8): D06M15/55D06M15/59D06M15/53D06M15/564D06M11/74D06M101/40
Inventor 张笑晴范欣愉丁江平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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