RESEARCH ON TOUGHENING METHODS OF RTM COMPOSITIES

doi:10.19936/j.cnki.2096-8000.20210528.013

Abstract

Abstract: In-situ and Ex-situ are the main toughening methods to improve the toughness of composites, which are also widely used in RTM composite. This paper concentrates on In-situ and Ex-situ toughening design for EH301 resin, comparing the advantages and disadvantages of two toughening methods used in RTM composite by analyzing manufacturability, thermal properties, CAI and other mechanical properties. Meanwhile, the improval effect of tackified process on the mechanical properties of Ex-situ toughened composite was studied with the SEM morphology of PA veil. The results show that the Ex-situ method has better processibility and remarkable toughening effect which is more suitable for toughening RTM composite. Simultaneously, the negative effect of compression strength and interlaminar shear strength caused by Ex-situ toughening can be improved by increasing the time and temperature of tackified process.

Key words: RTM composite, toughening, CAI, tackified process

CLC Number:

TB332

GUO Cong-cong, WANG Yi-min, SHAN Rui-jun, MENG Meng, LI Zhi-tao, MAO Hui-wen. RESEARCH ON TOUGHENING METHODS OF RTM COMPOSITIES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(5): 86-91.

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