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Sizing agent for graphene fibers and preparation method of sizing agent

A graphene fiber and graphene technology, which is applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of weak interfacial bonding, achieve the effect of increasing mechanical interlocking effect, easy batch preparation, and improved matching

Active Publication Date: 2019-11-19
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the outer layer of graphene fiber is a graphite structure, and the fiber surface has few active functional groups, which is chemically inert, resulting in weak interfacial bonding between graphene fiber and resin matrix when preparing composite materials.

Method used

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  • Sizing agent for graphene fibers and preparation method of sizing agent

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Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the sizing agent for graphene fibers of the present embodiment specifically comprises the following steps:

[0026] Step 1. Take 45 parts of liquid bisphenol A epoxy resin, add 45 parts of alkylphenol polyoxyethylene ether (hydroxyl value 40mgKOH / g), heat to 105°C and mix evenly, vacuumize to remove residual moisture, and then cool down to 80 , ℃ began to add 10 parts of chain extender diphenylmethane diisocyanate and then keep warm for 6 hours to obtain epoxy resin emulsifier;

[0027] Step 2. After mixing 50 parts of liquid bisphenol A epoxy resin and 10 parts of epoxy resin emulsifier, start to add 10 parts of deionized water, and when the phase transition of the mixed system begins, continue stirring and add deionized water at the same time 30 parts, obtain epoxy resin emulsion;

[0028] Step 3, adding the graphene aqueous solution into the epoxy resin emulsion, adding deionized water and stirring fully at the same time to prepare a sizing...

Embodiment 2

[0031] The preparation method of the sizing agent for graphene fibers of the present embodiment specifically comprises the following steps:

[0032] Step 1. Take 50 parts of liquid bisphenol A epoxy resin, add 40 parts of alkylphenol polyoxyethylene ether (hydroxyl value 50mgKOH / g), heat to 105°C and mix evenly, vacuumize to remove residual moisture, and then cool down to 80°C , ℃ began to add 10 parts of chain extender and then keep it warm for 6 hours to obtain epoxy resin emulsifier;

[0033] Step 2. After mixing 45 parts of liquid bisphenol A epoxy resin and 10 parts of epoxy resin emulsifier evenly, start adding 10 parts of deionized water. When the phase transition of the mixed system begins, continue stirring and add deionized water at the same time 30 parts, obtain epoxy resin emulsion;

[0034] Step 3, adding 1 mg / ml graphene aqueous solution into the epoxy resin emulsion, adding deionized water while fully stirring to prepare a sizing agent for graphene fibers. Whe...

Embodiment 3

[0036] The preparation method of the sizing agent for graphene fibers of the present embodiment specifically comprises the following steps:

[0037] Step 1. Take 55 parts of liquid bisphenol A epoxy resin, add 35 parts of alkylphenol polyoxyethylene ether (hydroxyl value: 60mgKOH / g), heat to 105°C and mix evenly, vacuumize to remove residual moisture, and then cool down to 80°C , ℃ began to add 10 parts of chain extender and then keep it warm for 6 hours to obtain epoxy resin emulsifier;

[0038] Step 2. After mixing 40 parts of liquid bisphenol A epoxy resin and 8 parts of epoxy resin emulsifier according to a certain ratio, start to add 15 parts of deionized water, and when the mixed system begins to undergo phase transition, continue stirring and add 35 parts in deionized water, obtain epoxy resin emulsion;

[0039] Step 3, adding the graphene aqueous solution into the epoxy resin emulsion, adding deionized water and stirring fully at the same time to obtain a sizing agent...

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Abstract

The invention belongs to the technical field of sizing agents, and particularly relates to a sizing agent for graphene fibers and a preparation method of the sizing agent.The preparation method comprises the following steps: step 1, taking liquid bisphenol A epoxy resin, adding an emulsifier, heating to 105 DEG C and mixing uniformly, vacuumizing to remove residual moisture, then cooling to 80 DEGC, starting to add a chain extender, and then preserving heat for 6 h to obtain an epoxy resin emulsifier; step 2, mixing the liquid bisphenol A epoxy resin and the epoxy resin emulsifier according to a certain ratio and stirring uniformly, then starting to add deionized water, and continuing to stir when phase transformation begins to occur in a mixed system and adding deionized water at the same time to obtain an epoxy resin emulsion; step 3, adding a graphene aqueous solution to the epoxy resin emulsion, and adding deionized water and fully stirring at the same time to prepare the sizing agent for the graphene fibers.The sizing agent involved in the invention is used for protecting the graphene fibers, optimizing the physicochemical structure of the surface of the graphene fibers, andimproving the interfacial property of the graphene fibers and a polymer matrix material.

Description

technical field [0001] The invention belongs to the technical field of sizing agents, and in particular relates to a sizing agent for graphene fibers and a preparation method thereof. Background technique [0002] Graphene is a carbon atom with sp 2 Hybrid two-dimensional carbon nanostructure materials, due to their unique crystal and electronic structure, have ultra-thin and ultra-strong characteristics, and at the same time have good chemical stability, excellent electronic conductivity, large specific surface area and excellent mechanical properties , are widely used in the fields of electronics and optics, energy storage, electrocatalysis, chemical sensing, and functional textiles. [0003] In recent years, the emergence of graphene fibers may have played an important role in promoting the macroscopic application of graphene. Graphene fiber is a new type of carbon fiber self-assembled from highly ordered graphene sheets. The preparation of graphene fibers mainly inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/55D06M101/40
CPCD06M15/55D06M2101/40D06M2200/40
Inventor 俞来明董余兵傅雅琴
Owner ZHEJIANG SCI-TECH UNIV
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