Synthesis and application of hyperbranched unsaturated resins

doi:10.19936/j.cnki.2096-8000.20220728.012

Abstract

Abstract: A core-shell hyperbranched unsaturated polyester was designed and synthesized. The hyperbranched polyester formed by trimethylolpropane and 2,2-bis(hydroxymethyl)propionic acid as the core. The adduct of 2-hydroxyethyl methacrylate and isophorone diisocyanate was used as the outer shell. The product was characterized and analyzed by fourier infrared (FT-IR), nuclear magnetic resonance (¹H NMR), and thermogravimetric analysis (TG). Finally, the obtained hyperbranched unsaturated resin is modified to linear unsaturated polyester. The results show that when the addition amount of hyperbranched unsaturated resin is 3% and it can enhance the toughness of unsaturated polyester and maintain other mechanical properties. At the same time, the effect of the shell-core hyperbranched unsaturated polyester on the viscosity system of the unsaturated polyester was also studied.

Key words: hyperbranched, unsaturated polyester, composite material, modify, toughness

CLC Number:

TB332

HUAN Sheng-min, HUANG Xiao-bo, YANG Run-miao, XIANG Meng. Synthesis and application of hyperbranched unsaturated resins[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(7): 75-80.

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