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Preparation of highly phenol substituted bio‐oil–phenol–formaldehyde adhesives with enhanced bonding performance using furfural as crosslinking agent
Author(s) -
Cheng Yanyan,
Sui Guanghui,
Liu Huan,
Wang Xiaofeng,
Yang Xiaomin,
Wang Zichen
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46995
Subject(s) - adhesive , furfural , phenol , formaldehyde , curing (chemistry) , materials science , bonding strength , ultimate tensile strength , composite material , chemical engineering , polymer chemistry , chemistry , organic chemistry , catalysis , layer (electronics) , engineering
Highly phenol substituted bio‐oil–phenol–formaldehyde (BPF) adhesives were prepared via the phenolization‐copolymerization method, in which furfural was used as a novel crosslinking agent to improve the bonding performance. The effects of bio‐oil percentage, furfural content, curing temperature, and pressure on the performance of BPF adhesives have been studied in detail. A BPF adhesive with 75% bio‐oil percentage and 15% furfural loading (named 75BPF_15) was synthesized, which was cured at 180 °C and 4 MPa. Compared to the conventional phenol–formaldehyde adhesive, the wet tensile strength of 75BPF_15 adhesive reached 2.84 MPa, which was significantly higher than the 1.54 MPa of PF. A possible mechanism of BPF adhesives crosslinked with furfural is proposed. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 46995.