Werkstoff und Verfahren zu seiner Herstellung

摘要

A combustion resistant material which will not produce toxic gases when subjected to heat, and which can be formed by moulding or by coating it onto a receiving surface while its constituents are reacting is produced by reacting a mixture of: 62 to 76: percent by weight aluminium oxide or hydroxide 12 to 16: percent by weight phenol resin 11.5 to 17.5: percent by weight furfuryl alcohol with sulphonic acid which serves as hardener, the proportion by weight of the sulphonic acid being from one-tenth to one-twentieth of the amount of aluminium oxide. The viscosity of the reaction mixture can be adjusted by addition of thinners such as butanol or butylglycol, or of thickeners such as chalk, particulate silicic acid, talc or magnesium oxide.