Verwendung von bei niedrigen Temperaturen schäumbaren Epoxidharzen in Hohlraumstrukturen

摘要

A method for reinforcing a substrate having a hollow structure or for fixing an insert in such a substrate comprises introducing a one- or two-component expandable and curable preparation based on epoxy resin into a selected part of the hollow structure to be reinforced. The preparation cures by being heated to a temperature in the range from 20 to 100° C. or above, while being expanded. An epoxy resin prepolymer and an organic ammonium carbamate, which at a temperature in the range from 20° to 100° C. or above releases at least 25% of the CO2 bound as carbamate.