3D Printing Process and Properties of Continuous Carbon Fiber Reinforced Thermasetting Phenolic Resin Composites

Abstract

Abstract: In view of the technical difficulties in the 3D printing and molding process of continuous carbon fiber reinforced thermosetting phenolic resin (CCF-TSPR) composites, this paper proposes a 3D printing and molding scheme of impregnation, in-situ pre-curing and post-curing to realize 3D printing of continuous carbon fiber reinforced thermosetting phenolic resin composites. The influence of the immersion temperature on the contact angle and surface tension of the phenolic resin, as well as the printing process on the morphology and mechanical properties of the sample were studied. The results show that when the dipping temperature is 40 ℃ and the pre-curing temperature is 180 ℃, the raw material is available for molding with optimal fiber-resin interface bonding. When the printing spacing is 0.5 mm, the bending strength and modulus of the sample reach the maximum values of 660.00 MPa and 57.99 GPa respectively, and the interlaminar shear strength reaches 20.14 MPa. This integrated preparation process of CCF-TSPR composites solves the difficulty of in-situ molding of 3D printing thermosetting resins, and provides a reference for the preparation of continuous fiber reinforced thermosetting resin composites with complex structures.

Key words: 3D printing, continuous carbon fiber, thermosetting phenolic resin, composite material, printing parameter, mechanical property

CLC Number:

TB334

LIU Taoxin, BAO Chonggao, DONG Wencai, MA Haiqiang, LU Wenqi. 3D Printing Process and Properties of Continuous Carbon Fiber Reinforced Thermasetting Phenolic Resin Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(7): 2494-2501.

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