Reasons for embrittlement:
1. The material is not sufficiently crosslinked. This can occur by processing at too low temperatures. The processing temperature should always be between 20 – 25 ° C. Resin and hardener as well as the mold must be brought to this temperature. Some materials also request a post tempering to obtain the mechanical values from the data sheet. The appropriate tempering can be found in the technical data sheets.
2. Early demoulding: Some materials have a so-called brittle phase during curing. At this stage, the material is very fragile. Therefore, components should not be demolded early. The demolding times can also be found in the technical data sheets.