| 摘要 |
1. Non-flammable rigid foam on the basis of phenolic resin and furane resin containing aluminium hydroxide and further components as filler having a weight ratio of filler:resin body of at least 2,5:1 and the bulk density is from 50 kg/m**3 to 450 kg/m**3 , and the resin component was obtained by reacting 50 to 62 weight parts resolic resin 0 to 15 weight parts furanic resin 25 to 40 weight parts furfuryl alcohol 0,5 to 5 weight parts foam stabiliser with 14 to 17 weight parts per 100 weight parts resin component and filler of a curing agent mixture comprising 40 to 50 weight parts phosphoric acid 12 to 17 weight parts boron hydrofluoric acid as well as either 5,5 to 7 weight parts p-toluene sulphonic acid and 29,5 to 35 weight parts water or 6 to 7 weight parts p-phenol sulphonic acid and 32 to 35 weight parts water characterized in that the filler consists of 40 to 55 weight parts aluminium hydroxide a portion of which may be replaced by acid activated bentonite, montmorillonite or zeolite or by magnesium- or zinc aluminate of the general formula Me**II Al2 O4 , natural spinels, ground blast furnace slag or natural perlites, 10 to 20 weight parts boric acid 2 to 4 weight parts sodium tetraborate 7 to 25 weight parts cryolite, and 1 to 3 weight parts copper II oxide, where the weight ratio of borate:boric acid is 1:5. |
