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Table 1. Performance requirements for physical properties of phenol and phenol-resorcinol resin adhesives for wood (High-temperature curing)
Property Unit Requirement
Insoluble material % ≤ 20 by mass
Amylaceous matter No indication of the presence of amylaceous matter
pH of cured film ≥ 2.5
Plywood shear strength (dry) kPa ≥ 2 500 average shear strength
Plywood shear strength (cold soak) kPa ≥ 2 500 average shear strength
Plywood shear strength (boil) kPa ≥ 2 500 average shear strength
Liquid working life at 21°C to 24°C hours ≥ 3 Footnote (1)
Storage life – after three months at 21°C to 24°C Meets the requirements of CSA O112.6 Footnote (2)