Effect of Nano SiO2 on Pyrolytic Reaction of Phenol-Formaldehyde Resin

Phenol-formaldehyde resin is used as the most adhesive to produce waterproof plant-based composite. However, this product contains phenol and formaldehyde which can be easily released to pollute air. Based on the single-factor method, the effect of nano SiO₂ on situation of pyrolytic reaction of PF resin was studied by Py-GC/MS. The results were shown that the components of PF by Py-GC-MS analysis were carbon dioxide(83.54%), D,.alpha.-tocopherol (12.55%), 1,3-bis(trimethylsilyl) benzene (1.96%), phenol(1.95%). And the results were shown that the main components of PF/SiO₂ composite by Py-GC-MS analysis were as follow: carbon dioxide (60.37%), 2-butanamine (14.41%), fluoxetine (12.09%), 2,6,10-dodecatrien-1-ol, 3,7,11-trimethyl-, acetate, (E,E)- (3.38%), bis(2-ethylhexyl) phthalate(3.35%), phenol, 2-methyl-(3.12%), phenol(2.39%), 2-propanamine(0.89%). The result showed that nano SiO₂ could effectively delay the pyrolysis of PF resin.