Study on Preparation and Properties of Water-Soluble High-Temperature-Resistant Epoxy Resin-Type Carbon Fiber Sizing Agent 


Vol. 25,  No. 9, pp. 3415-3426, Sep.  2024
10.1007/s12221-024-00677-3


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  Abstract

In order to improve the infiltration and adhesion of epoxy resin to CFs and enhance the interfacial properties of CFs/EP composites, the water-soluble epoxy resin prepared by in-situ blending phosphorylation modification was compounded into a high-temperature-resistant carbon fiber sizing agent, and the CFs/EP composites were prepared by vacuum-assisted resin transfer forming method. The results showed that the prepared sizing agent contained epoxy resin, aliphatic ester, polyoxyethylene and other active oxygen-containing groups. It had good water solubility, small particle size, good stability, and could be dissolvable with water at room temperature in any proportion. The average particle size of 1% sizing agent emulsion was 17.7 nm, and it was stable at 4000 rpm for 30 min. The initial decomposition temperature of the sizing agent is 313 ℃, the mass residue rate is 65.60% at 400 ℃, and the mass residue is 20% at 600 ℃, which has excellent high-temperature resistance. The sizing agent can also significantly improve the surface energy of CFs, and increase its surface interface bonding and mechanical properties. When the content of sizing agent on the surface of CFs is 7.88 mg/g, the surface energy is 47.38 mN/m, and the breaking strength is 777.91 MPa, which is 24.42 and 29.29% higher than that of desizing CFs. The bend strength and shearing strength of the prepared CFs/EP composites are 107.38 MPa and 9.83 MPa, which are increased by 81.91 and 20.17% compared with the desizing products.

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  Cite this article

[IEEE Style]

N. Wang, L. Wu, S. Li, Z. Qiao, C. Zhou, "Study on Preparation and Properties of Water-Soluble High-Temperature-Resistant Epoxy Resin-Type Carbon Fiber Sizing Agent," Fibers and Polymers, vol. 25, no. 9, pp. 3415-3426, 2024. DOI: 10.1007/s12221-024-00677-3.

[ACM Style]

Nana Wang, Ling Wu, Shanshan Li, Zihang Qiao, and Cun Zhou. 2024. Study on Preparation and Properties of Water-Soluble High-Temperature-Resistant Epoxy Resin-Type Carbon Fiber Sizing Agent. Fibers and Polymers, 25, 9, (2024), 3415-3426. DOI: 10.1007/s12221-024-00677-3.

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