@Article{jrm.2020.012374,
AUTHOR = {Jinxing Li, Jun Zhang, Yunxia Zhou, Zhaoling Zhou, Hisham Essawy, Xiaojian Zhou, Guanben Du},
TITLE = {Preparation of an Abrasive Grinding Wheel Based on Tannin Resin CrossLinked by Furfuryl Alcohol, Urea and Glyoxal},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {9},
PAGES = {1019--1032},
URL = {http://www.techscience.com/jrm/v8n9/39615},
ISSN = {2164-6341},
ABSTRACT = {Simple bio-based abrasive grinding wheel based on thermosetting resin
matrix was developed starting with condensed tannin and furfuryl alcohol, which
are mainly derived from forest and agricultural products like tree barks, wheat and
crops. Fourier transform infrared spectra (FTIR) signified the acidic conditions are
quiet efficient for the reaction of furfuryl alcohol, urea and glyoxal all together
and the -CH<sub>2</sub>-NH- and -CH<sub>2</sub>-O-CH(OH)- groups are predominating in cross-linking of the tannin-furfuryl alcohol-urea-glyoxal (TFUG) resin. The strengthening
contribution of the tannin was also confirmed by the preservation of its distinct
crystallinity using X-ray diffraction (XRD). Differential scanning calorimetry
(DSC) and thermogravimetric analysis (TGA) ensured that TFUG resin can be
cured at low temperature and offer higher heat resistance compared with phenol-formaldehyde (PF) resin. The high hardness and excellent compressive
strength revealed by the corresponding investigations such as Brinell hardness,
compression resistance, and grinding tests suggested a strong abrasive ability
using the new grinding wheel compared with lab-made grinding wheel based
on PF resin. This could be ascribed to the absence of cracks and low content
of formed holes as confirmed using scanning electron microscopy (SEM) and
balanced reaction conditions that leads to network structure with regular local
reinforcements and homogeneous crosslink density.},
DOI = {10.32604/jrm.2020.012374}
}