Structure and properties of boron-containing bisphenol-A formaldehyde resin

The boron-containing bisphenol-A formaldehyde resin from bisphenol-A, formaldehyde and boric acid was synthesized. The mechanism of synthesis and curing reaction were investigated by infrared spectroscopy and chemical analysis method. The kinetics of thermal degradation and thermal stability were determined by thermal analysis. The results show that the resin has higher heat resistant property and oxidative resistance than common phenol–formaldehyde resin. In addition, the fiberglass-reinforced laminate has good mechanical and electric properties.