OMICURE U-24M
OMICURE U-24M
OMICURE U-24M is an aromatic substituted urea that is intended for use as a latent accelerator for the dicyandiamide cure of epoxy resins. The addition of OMICURE® U-24M to epoxy/dicy formulations reduces the time and/or temperature required to cure these shelf-stable one-part products.
Compared to the other CVC Thermoset Specialties substituted ureas, toluene bis dimethyl urea provides the greatest degree of acceleration to epoxy/dicy formulations. OMICURE U-24M, at concentrations required to provide an equal degree of acceleration, will produce the least effect on cured properties. Suggested use levels of this product are < 5 phr. Curing can be accomplished in about 50 minutes at 100°C and in less than 3 minutes at temperatures 150°C. Cure times are dependent on the composition of the formulated product and your particular end application.
Room temperature shelf lives (time to double viscosity) of > 3 months can be obtained when < 1 phr OMICURE U-24M is used with DGEBA/dicy. Some of the factors that can affect shelf life are formulation ingredients and compounding parameters. Ingredients in which OMICURE U-24M is insoluble at processing and storage temperatures will enhance overall storage stability. It can be incorporated into your formulation concurrent with the dicy addition.
Applications for OMICURE U-24M
- Adhesives
- Powder coatings
- Prepregs
- Encapsulation
- Reinforcements
Properties
Check out other OMICURE Curing Agents, Accelerators, and Catalysts in the CVC Product Brochure!
