| 摘要 |
The invention provides a composition for forming an intumescent material which upon heating decomposes into gas and a solid foam residue, comprising: a water-dispersible melamine formaldehyde resin which when cured is hydrophobic; a setting agent which hardens in the presence of water thereby to cause the composition to set; a cross-linking agent for curing the resin, the cross-linking agent being a polyamido compound; an ammonium phosphate; polyvinyl acetate; a solid polyhydroxy compound; and reinforcing fibrous material. To form the intumescent material, the composition is caused to set and the melamine resin is cured. The intumescent material has improved anti-cracking properties.
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