Abstract:The compactness of resin was studied by the moisture adsorption method in the paper. The research process
was explained by six kinds of resins, including S-157 phenol resin, Q-913 phenol resion and boron modified phenol resin
etc. Six kinds of resins were decomposed to get different residual chars under the protection of nitrogen atmosphere. The re鄄
sidual chars were transferred and placed under a laboratory with the controlled humidity and temperature. The weight chan鄄
ges of several residual chars were weighed up by a balance with the precision of 0.001 milligram. The compactness of resid鄄
ual chars were compared by their increment after adsorption balance of moisture. The relation of the mass change with in鄄
crement of six residual chars was gotten after a interval of 200 minute moisture adsorption. The microscope structure of resid鄄
ual char was observed by electron scanning microscope, and the compactness in microstructure is in accordance with the a鄄
bility of moisture adsorption.
