| 摘要 |
The invention relates to thermo-curable structural adhesives having multi-phase polymer morphology characterized in that the binding agent matrix of the cured reaction adhesive contains: (a) a continuous phase consisting of an optionally cross-linked polymer P1 having a glass transition temperature of higher than 100 DEG C, preferably higher than 120 DEG C; (b) a heterodisperse phase consisting of individual continuous areas of a thermoplastic or elastomeric polymer P2 having a glass transition temperature of lower than -30 DEG C and an average particle size ranging from 0.5 to 50 mu m that, itself, contains separated phases of another thermoplastic or elastomeric polymer P3 having a glass transition temperature of lower than -30 DEG C and a size ranging from 1 mu m to 100 mu m, which can aggregated, in part, to from large agglomerates, and (c) an additional heterodisperse phase, which is embedded in the continuous phase and consists of areas of a thermoplastic or elastomeric polymer P3 having a glass transition temperature of lower than 30 DEG C that have, at least in part, an average particle size ranging from 1 mu m to 50 mu m, whereby P3 is not identical to P2. These multi-phase structural adhesives are suited for use a high-strength and shock-resistant structural adhesive in vehicle manufacturing, aircraft construction or railway vehicle manufacturing as well as for inner reinforcements of cavities in vehicle manufacturing and for producing reinforcing coatings for thin-walled metal sheets or plastic components. |
