Effect of multifunctional hydroxyl phenyl epoxy modified epoxy resin on thermal and bonding properties of composites

doi:10.19936/j.cnki.2096-8000.20230828.005

Abstract

Abstract: With self-made epoxy resin as the matrix, a multifunctional hydroxyl phenyl epoxy as modifier, a new self-adhesive epoxy resin was prepared by melt-mixing method. The glass fiber reinforced epoxy resin composite was prepared using this resin. The effect of different contents of modifier on thermal and bonding properties of epoxy composites was investigated. The results indicate that the addition of multifunctional hydroxyl phenyl epoxy is beneficial to the increase of glass-transition temperature and decrease of the drum peel strength in the meantime. When the weight ratio of multifunctional hydroxyl phenyl epoxy is 20%, the glass-transition temperature increases from 151.9 ℃ to 172.6 ℃ and the drum peel strength decreases from 56.88 (N·mm)/mm to 39.5 (N·mm)/mm, which can meet the design index requirements of honeycomb sandwich structures and has good engineering application prospects.

Key words: epoxy, composite, thermal property, bonding property

CLC Number:

TB332

YAN Hongchen, SHI Fenghui, ZHANG Baoyan, MA Zhaodan, WANG Tingting. Effect of multifunctional hydroxyl phenyl epoxy modified epoxy resin on thermal and bonding properties of composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(8): 34-38.

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