Urea button (commonly known as Euly / electric jade buckle), derived from urine aldehyde resin.
Basic performance
Phenolic resin is also called bakelite, also known as bakelite powder. The original colorless or brownish transparent material, the market sales often add coloring agent and showed red, yellow, black, green, brown, blue and other colors, there are particles, powder. Resistant to weak acids and weak bases, the case of strong acid decomposition occurs, the case of strong alkali corrosion. Insoluble in water, soluble in acetone, alcohol and other organic solvents, phenol and formaldehyde condensation derived.
Classification and use
Including: novolak resin, thermosetting phenolic resin and oil-soluble phenolic resin. Mainly used in the production of pressure plastic powder, laminated plastics; manufacturing lacquer or insulation, corrosion-resistant coatings; manufacturing daily necessities, decorations; manufacturing noise insulation materials.
Common high-voltage sockets, furniture, plastic handles, etc. Phenolic resin appearance phenolic resin, referred to as PF. Phenolic resin is a yellow, transparent, amorphous block material, due to the presence of free molecules and reddish, specific gravity 1.25 ~ 1.30, soluble In alcohol, insoluble in water, stable to water, weak acid, weak alkali solution. Resin made by polycondensation of phenol and formaldehyde under catalyst conditions, neutralization, and water washing.
Because of the choice of catalysts, they can be divided into two categories, thermosetting and thermoplastic. Phenolic resin has good acid resistance, mechanical properties, heat resistance, widely used in anti-corrosion engineering, adhesives, flame retardant materials, grinding wheel manufacturing and other industries.
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