| 摘要 |
<p>Fire-retardant material in shaped form which retains its structural integrity after degradation of its organic content in a fire is made by curing a shaped mass of curable elastomer (e.g. an ethylene/vinyl acetate copolymer) in which are dispersed (i) a mixture of glass-formers ('frits') melting progressively over a range of several hundred degrees C and containing components which devitrify in the upper part of the range, (ii) aluminium hydroxide and (iii) a magnesium compound (e.g. Mg(OH)2) endothermically decomposable to magnesium oxide. The mixture of frits preferably forms less than 15 % by weight of the material.</p> |
