| 摘要 |
The invention concerns a plastic laminate containing an outer layer of paper impregnated with amino-formaldehyde resin and an inner layer of paper, which contains fire retarding agent and is impregnated with phenol- formaldehyde resin. The fire retarding agent is a product obtained by reaction of aluminium or copper compounds with phosphoric acid and nitrogen bases, and this agent has the following composition: total P2O5, 37-63 wt.percent water-soluble P2O5, 0-6 wt.percent NH3, 3.5-11 wt.percent MO, 18-43 wt.percent where MO means at least one metal oxide. The plastic laminate has the following composition: paper in the outer layer, 9-26 wt.percent paper in the inner layer, 26-49 wt.percent phenol-formaldehyde resin, 16-30 wt. percent amino-formaldehyde resin, 5-26 wt. percent fire protection agent, 4-8 wt. percent. |
