The effect of isosorbide based multi-functional polyol in bio-based polyurethane for structural adhesives
발표자
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초록
내용
A series of bio-based polyurethanes (bio-PUs) was successfully synthesized by varying the hard/soft segment ratio from 9/1 to 5/5, isosorbide-based multi-functional polyol was used to improve the properties of structural adhesives. A series of bio-PUs was synthesized polyol as the soft segment and isosorbide (ISB) and isophorone diisocyanate (IPDI) as the hard segment, all with molecular weights of about 15,000 to 20,000 g/mol. Multi-functional polyol acted as an increase in molecular weight and significantly affected mechanical properties. The structure of the bio-PU series was analyzed by FT-IR (Fourier transform infrared spectroscopy) and GPC (gel permeation chromatography), and the shear strength was measured using UTM (Universal Testing Machine). In addition, hydroxyl-terminated polybutadiene (HTPB) was used for the core, which is to improve impact strength, and polyurethane acrylate (PUA) was used for the shell, successfully synthesized polyurethane-based core-shell rubber (CSR).