Abstract
Wetting characteristics of binder resins used in the production of mineral fiber thermal insulations are examined. Contact angles for droplets of phenol-formaldehyde and sodium silicate resins on glass and mineral fibers were de termined under process conditions using a technique developed by Carroll. It is shown that these solutions give consistently low contact angles (θ < 20°) over all concentrations studied. Time-dependent contact angles are also discussed to com pare cure characteristics of the two resin systems.
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