| 摘要 |
<p>A sprayable, foam-forming, phenolic resin composition having the combination of properties of: (i) a viscosity suitable for spraying, (ii) a cure rate suitable for spraying to prevent running or sagging of sprayed foam, (iii) which when suitably cured provides a foam having a high temperature resistance, and (iv) the cured foam produces substantially non-toxic fumes when burned. The sprayable, foam-forming, phenolic resin composition is made from a phenol-aldehyde resin; optionally a phenol compound; a catalyst for catalyzing a curing reaction of said phenol-aldehyde resin; and a gas-generating compound which generates a gas during said curing reaction of said phenol-aldehyde resin. The invention also provides a method for making a phenolic-resin foam layer and a sprayed phenolic-resin foam layer.</p> |
