Mechanical and Thermal Properties of Epoxy Resins Modified by a Novel Thermoplastic-polyimide 


Vol. 22,  No. 1, pp. 205-212, Jan.  2021
10.1007/s12221-021-9142-x


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  Abstract

In this paper, a novel polyimide with trifluoromethyl group (PIS) was synthesized successfully and used to improve the toughness of epoxy resins. Five modified epoxy resins (5, 7.5, 10, 12.5 and 15 wt%) were prepared and investigated, respectively. The structure, thermal properties, tensile properties, viscoelastic properties, toughness and morphology of modified epoxy resins were studied by Fourier Transform Infrared Spectroscopy (FT-IR), thermogravimetric analysis (TGA), Instron 5967, Dynamic Mechanical Analysis (DMA), and Scanning Electron Microscopy (SEM). The results showed that the epoxy resins modified with PIS exhibited good thermal stability which the glass transition temperatures increased from 135.9 oC to 146.4 oC. Tensile strength of modified epoxy resins increased from 40.4 MPa to 92.3 MPa. The KIC values increased from 0.86 MPa

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  Cite this article

[IEEE Style]

Y. Ji, Y. Zhang, P. Wang, Y. Li, J. Sui, "Mechanical and Thermal Properties of Epoxy Resins Modified by a Novel Thermoplastic-polyimide," Fibers and Polymers, vol. 22, no. 1, pp. 205-212, 2021. DOI: 10.1007/s12221-021-9142-x.

[ACM Style]

Yu Ji, Yan Zhang, Ping Wang, Yuanyuan Li, and Jianhua Sui. 2021. Mechanical and Thermal Properties of Epoxy Resins Modified by a Novel Thermoplastic-polyimide. Fibers and Polymers, 22, 1, (2021), 205-212. DOI: 10.1007/s12221-021-9142-x.

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