Study of Phase Transition, Structure Modulation, and Thermal Properties of Si/B-modified Bisphenol a Phenolic Resin Ceramicizable Materials.

Phenolic resin (PF) is thermosetting resin with excellent overall performance, including good mechanical properties, high heat resistance, good carbon retention ability, excellent electrical insulation, and high mechanical strength. Compared to tar and asphalt, PF (phenolic resin) binders offer several advantages, including superior bonding properties, excellent wetting capabilities, high thermal hardness, high curing strength, high carbon yield, and environmental friendliness. PF is important binder for refractory ceramics. In this work, new PF, namely Si/B-modified PF, was prepared through in situ polymerization of boric acid using 25% glutaraldehyde (GA) aqueous solution, n-butanol, and bisphenol A (BPA) as raw materials to synthesize BPA–GA PF. Furthermore, when dimethyldiethoxysilane is introduced into BPA-GA, the modified PF exhibits excellent yield and thermal resistance when an appropriate amount of the modifying element is added. X-ray photoelectron spectroscopy, scanning electron microscopy, and thermogravimetric analysis indicate that the novel Si/B-modified PF possesses superior antioxidant properties and higher yields compared to the original PF. This modified PF has promising applications in bioengineering, aerospace industry, energy storage devices, and other fields. [ABSTRACT FROM AUTHOR]