SR 121

Epoxy resin

SR 121

Product description:

The SR 121 system is a two-component epoxy resin specially designed for the production of prepregs.
Its low viscosity allows for manual or mechanical impregnation of fabrics, yarns, braids, and stitched assemblies.
It is also suitable for filament winding.

SR 121 offers excellent storage stability (at least 1 year before mixing) and ensures safe processing thanks to a formulation free of solvents, reactive diluents, and CMR substances.

The service temperature reaches a maximum of 90 °C, with the possibility of post-curing from 80 °C to 150 °C depending on production conditions.

Technical datasheets

SR 121 / KTA 31x

Sectors

Hardeners

KTA 311

Very slow hardener.

Suitable for prepregs requiring longer storage before processing, it ensures excellent stability and optimal control of curing cycles.

Mixing ratio 100/22 by volume.
T_g max = 105 °C.

KTA 313

Slow hardener.

Recommended for applications requiring extended working time, particularly on thick fabrics or complex stitched assemblies.

Mixing ratio 100/22 by volume.
T_g max = 112 °C.

KTA 315

Fast hardener.

Suitable for standard prepreg production, offering a good balance between working time and curing speed.

Mixing ratio 100/22 by volume.
T_g max = 116 °C.

Hardeners

KTA 311

Very slow hardener.

Suitable for prepregs requiring longer storage before processing, it ensures excellent stability and optimal control of curing cycles.

Mixing ratio 100/22 by volume.
T_g max = 105 °C.

kta 315

Fast hardener.

Suitable for standard prepreg production, offering a good balance between working time and curing speed.

Mixing ratio 100/22 by volume.
T_g max = 116 °C.

kta 313

Slow hardener.

Recommended for applications requiring extended working time, particularly on thick fabrics or complex stitched assemblies.

Mixing ratio 100/22 by volume.
T_g max = 112 °C.

Complementary products

Reinforcements

SICOMIN has been involved for several decades in the development and optimization of woven and multi-axial reinforcements based on glass, carbon and aramid fibers, or natural fibers such as flax.

Discover