Typical Formulation Ingredients
Ingredient
Parts by weight
Powdered phenolic (two-step resin)
Liquid phenolic (one-step resin)
Furfural / cresylic acid (3/2)
(Source: Petrie, E.M., “Phenolic Resin Adhesives and Modifiers”, SpecialChem, February 11, 2009.)
Typical Properties
Phenolic resin is a heat-cured plastic formed from a reaction of a carbon-based alcohol and a chemical called aldehyde. The resin is hard, heat resistant, and can be mixed with a wide range of materials for industrial and residential uses. The high cross
Resulting Properties
For grinding wheels and other abrasives, particles such as aluminum oxide or silicon carbide are bound with a phenolic resin. The binder consists of a powdered phenolic resin, either alone or with a liquid wetting agent such as a phenolic one-step resin or furfural. Other fillers such as cryolite (Na3AlF6), potassium fluoroborate, and potassium sulfate are usually included as part of the adhesive formulation. The fillers act as lubricants. This bond is used in wheels designed for rapid high speed cutting and removal of large amounts of metal. For heavy duty grinding operations, where heat is generated at a rapid rate, phenolic resins with high heat resistance are used.