3-苯基-1,1-二甲基脲；潜伏性有机脲环氧树脂促进剂；苯基二甲基脲

产品描述：

OMICURE® U-405, an aromatic substituted urea, is intended for use as a latent accelerator for the dicyandiamide cure of epoxy resins. The addition of OMICURE
U-405 to these formulations produces shelf-stable one-part products that cure in shorter times and/or at lower temperatures. OMICURE U-405M represents the
micronized grade of OMICURE U-405.
Of the CVC Thermoset Specialties substituted ureas, OMICURE U-405 is mostsimilar in structure to monuron and diuron. However, OMICURE U-405 does not
contain any chlorine and is, therefore, safer to use than monuron or diuron. When substituting OMICURE U-405 for either of these products, the formulator should
use approximately 30%-50% less 94 to achieve similar degrees of acceleration. Suggested use levels of OMICURE U-405 are<5 phr. At 100 °C, cures can be
obtained in about one hour and in less than four minutes at temperatures >150 °C.
Cure times are dependent on the composition of the formulated product and your particular end application. Some of the factors that can effect shelf life are formulation ingredients and compounding parameters. Ingredients in which OMICURE U-405 is insoluble at processing and storage temperatures will enhance overall storage stability. 

OMICURE U-405 can be incorporated into your formulation concurrent with the dicy addition.

性能特点：

• 电绝缘性能

• 与沥青的混溶性

• 高固含量

• 水解稳定

• 良好的耐水性

• 低透湿性

• 耐水性酸和碱

• 低温柔性

• 对各种基材具有优异的附着力

典型物理和化学特性：

建议应用：

As a latent accelerator in the dicyandiamide cure of epoxy resins used in:

• Adhesives
• Powder coatings
• Prepregs
• Encapsulation
• Reinforcements