The Effect of the pH Value of Wood on the Curing Reaction of Low Toxic Urea-Formaldehyde Resin
The differential scanning calorimetry(DSC) was used to study the curing reaction of low toxic UF resin with poplar, birch, larch powder in different pH value. The results showed that the effect of different wood flour and its pH value on the curing reaction of UF resin was not the same. Along with the increase of the pH, the peak temperature and the onset temperature was raised; the peak temperature and the onset temperature of poplar was higher than that of the birch. The tempera- ture of the curing reaction of UF resin modified by melamine was higher than the UF resin without modification.
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
L. B. Zhu et al., "The Effect of the pH Value of Wood on the Curing Reaction of Low Toxic Urea-Formaldehyde Resin", Advanced Materials Research, Vols. 150-151, pp. 1263-1266, 2011