Phenol-formaldehyde-bonded particle board, properties

In order to achieve results comparable to phenol-formaldehyde bonded particle boards which had densities in the range of. 71 to. 79 g/cc, densities of boards crosslinked with HDA were varied from. 77 to. 88 g/cc. Thus, using the same weight of flakes, boards prepared using the activated substrates exhibited similar properties but slightly higher densities. 

Table II. Some Properties of 1,6-Hexanediamine (HMDA) and Phenol—Formaldehyde-Bonded Particle Board...

Phenolic Resins. PhenoHc resins [9003-35 ] (qv) are thermosets prepared by the reaction of phenol with formaldehyde, through either the base-cataly2ed one-stage or the acid-cataly2ed two-stage process. The Hquid intermediate may be used as an adhesive and bonding resin for plywood, particle board, ftberboard, insulation, and cores for laminates. The physical properties for typical phenoHc laminates made with wood are Hsted in Table 1. 

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