PROCESS FOR TREATING CELLULOSIC FIBRES, AS WELL AS FIBROUS CEMENT PRODUCTS AND COMPOSITIONS FOR THEIR PRODUCTION

摘要

A process is proposed for the treatment of cellulosic fibres, in particular cellulose pulp, in an aqueous suspension with finely dispersed, preferably condensed silica, which is above all characterised in that the cellulosic fibres are suspended in an alkaline solution, silica is added and, after distribution of the latter in the suspension, is fixed on and, if appropriate, in the fibres by addition of a polyelectrolyte; fibre cement products or mixtures for the manufacture thereof produced from cellulose fibres treated in this way are also proposed.