Hebei Tianao Technology Co.,Ltd

Phenolic resin is also called bakelite, also known as bakelite powder. It is originally a colorless or yellow-brown transparent substance, and the market sales are often red, yellow, black, green, brown, blue and other colors with colorants, and there are granules and powders. It is resistant to weak acids and alkalis, decomposes in case of strong acids, and corrodes in case of strong alkalis. Insoluble in water, soluble in acetone, alcohol and other organic solvents. Phenol is obtained by polycondensation of formaldehyde. Solid phenolic resin is a yellow, transparent, amorphous lumpy substance, reddish because it contains free phenols, with a specific gravity of 1.25~1.30, easy to chemicalbook soluble in alcohol, insoluble in water, stable to water, weak acid, weak alkali solution. A resin made of phenol and formaldehyde under catalyst conditions by polycondensation, neutralization, and water washing. Due to the different catalysts, they can be divided into two categories: thermosetting and thermoplastic. Phenolic resin has good acid resistance, mechanical properties and heat resistance, and is widely used in anti-corrosion engineering, adhesives, flame retardant materials, grinding wheel manufacturing and other industries. Liquid phenolic resin is a yellow and dark brown liquid, such as: alkaline phenolic resin is mainly used as a casting binder.