Aqueous carbon fiber sizing agent and preparation method of same

A technology of carbon fiber and hydrophilic emulsifier, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc. It can solve the problems of long synthesis cycle, affecting the surface interface performance of carbon fiber, and affecting the mechanical properties of composite materials, etc.

Inactive Publication Date: 2019-03-01
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon fiber sizing agent prepared by the chemical synthesis method has the advantages of high storage stability and excellent performance; the disadvantages are: the synthesis cycle is long, the requirements for production equipment are high, and the reaction process requires the use of highly toxic catalysts, which is environmentally friendly sexual problems unresolved
Therefore, the performance of the externally emulsified epoxy resin emulsion is limited, and it can only be compensated by adding other types of emulsions, such as synthetic polyurethane emulsions.
In addition, for the epoxy resin emulsion prepared by physical means, the emulsifier is easy to dissociate to the surface of the coating film during the drying process, thereby affecting the interfacial properties of the carbon fiber surface, and in the process of composite material preparation, it is easy to affect the composite resin with the carbon fiber surface. Combination, thus affecting the mechanical properties of composite materials

Method used

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  • Aqueous carbon fiber sizing agent and preparation method of same
  • Aqueous carbon fiber sizing agent and preparation method of same
  • Aqueous carbon fiber sizing agent and preparation method of same

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Embodiment approach

[0066] According to a typical embodiment of the present invention, a water-based carbon fiber sizing agent is provided. This water-based carbon fiber sizing agent is made of the following components by weight:

[0067]

[0068] The water-based carbon fiber sizing agent of the present invention is a water-based carbon fiber sizing agent combined by heat curing and light curing. The carbon fiber after the sizing can be dried by high-temperature heat drying, and then cured by light curing, so that the carbon fiber The performance of the sizing agent is further improved; the combination of thermal curing and light curing provided by the present invention improves the production efficiency of the carbon fiber sizing agent, enhances the clustering of the fiber bundles, and is not easy to shed crumbs during the weaving process, and can be combined with the ring Perfect combination with epoxy resin prepreg.

[0069]Preferably, the added amount of epoxy resin is 22 to 35 parts by w...

Embodiment 1

[0102] The carbon fiber sizing agent of this embodiment is made by the following components (table 4) by weight after curing and photocuring:

[0103] Table 4

[0104]

[0105] The preparation method is as follows:

[0106] Add 24 parts of 0161 (E-54) (Bluestar Nantong Xingchen Synthetic Material), 6 parts of N-740 (Bluestar Nantong Xingchen Synthetic Material), and 1 part of propylene glycol methyl ether solvent into a mixing bucket with a condenser. Raise the temperature to 90°C, stir and disperse for 1 hour, and the stirring speed is 800r / min, so that the epoxy resin is mixed evenly. Then, under the condition of uniform stirring, slowly add 8 parts of BOM-25 into the above epoxy resin system to make it uniformly dispersed in the epoxy resin, stirring time is 1 hour, stirring speed is 1000r / min. Then, lower the temperature to 80°C, add 0.35 parts of wetting and dispersing agent ANTI-TERRA-250 to make it evenly dispersed in the system. Then, lower the temperature to 65°...

Embodiment 2

[0108] The carbon fiber sizing agent of this embodiment is made by the following components (Table 5) by weight after curing and photocuring:

[0109] table 5

[0110]

[0111] The preparation method is as follows:

[0112] Add 23 parts of WSR618 (E-51) (Bluestar Nantong Xingchen Synthetic Materials) and 0.7 parts of oleic acid amide into a mixing tank with a condenser, raise the temperature to 150°C, stir for 1 hour, and the stirring speed is 600r / min . Lower the system temperature to 90°C, add 6 parts of N-740S (Bluestar Nantong Xingchen Synthetic Material) and 1 part of propylene glycol methyl ether solvent, stir and disperse for 1 hour, and the stirring speed is 800r / min, so that the epoxy resin is mixed evenly. Then, lower the temperature to 80°C, and slowly add 8.5 parts of BOM-25 to the above epoxy resin system under uniform stirring to make it evenly dispersed in the epoxy resin. The stirring time is 1 hour and the stirring speed is 1000r / min. . Then, lower the ...

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Abstract

The invention discloses an aqueous carbon fiber sizing agent and a preparation method of same. The aqueous carbon fiber sizing agent is composed of, by weight, 20-40 parts of epoxy resin, 2-15 parts of a hydrophilic emulsifier, 0-20 parts of an aqueous polyurethane emulsion, 0-5 parts of higher fatty acid amide, 0.1-3 parts of a photo-initiator, 0.05-5 parts of an aqueous wetting dispersant, 0.1-5parts of a thickener, 0.2-5 parts of a solvent, and 30-70 parts of deionized water. The aqueous carbon fiber sizing agent integrates thermal curing and photo-curing, which can be firstly dried in a high temperature drying manner and then cured in a photo-curing manner, so that the performances of the sizing agent are further improved.

Description

technical field [0001] The invention relates to the technical field of carbon fiber sizing agents, in particular to a water-based carbon fiber sizing agent and a preparation method thereof. Background technique [0002] At present, sizing agents play an extremely important role in the application of high-performance carbon fiber and fiber-reinforced resin composites. After sizing treatment on the surface of carbon fiber, it can improve the properties of carbon fiber such as clustering, smoothness, wear resistance and processability, and meet the requirements of carbon fiber in subsequent manufacturing processes such as weaving and processing. [0003] The sizing agents used in the existing market are mainly divided into two categories: oily sizing agents and water-based sizing agents. As the country's requirements for environmental protection are getting higher and higher, the proportion of water-based sizing agents in the market is getting higher and higher. The water-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/55D06M15/564D06M15/53D06M13/41D06M13/402D06M101/40
CPCD06M13/402D06M13/41D06M15/53D06M15/55D06M15/564D06M2101/40
Inventor 王友东王海龙丁清华
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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