Lightweight – Low Stretch – Negative Thermal Coefficient – High Tensile Modulus
All BMI resins feature:
- High purity
- Low thermal conductivity
- 365 day shelf life
- Maximum continuous service temp up to
- PSI ranging from 37,000 – 45,000
- 40 cPS viscosity at 275°F
- Gel time 40 min 275F
- Low viscosity during processing
- Low tack solid at room temperature
- Crushed or solids
- 325°F cure temp
- Tg temperatures above 700F
- Finished hardness.
BMI-1 is a high-temperature Bismaleimide resins with features that you may need in your application.
One feature of the BMI-2 grade from Raptor Resins, is its low-temperature cure. Most BMI resins are cured at 440-480°F. The BMI-2 version cures at 325°F, which reduces process time. Despite the lower cure, the resin has a glass-transition (Tg) temperature of 700°F., as measured by dynamic mechanical analysis. The Tg of most BMI grades is 520-530°F., Repecka claims. “The Tg temperature of BMI-2 is not only much higher than that of other BMI resins, but greater than most polyimides that are formulated for use at higher temperatures than BMI.”
These new polymers can also be used to lower the cost of making high-temperature (500ºF) composite parts, without compromising performance and actually improve performance in areas. We welcome your inquiries and can provide data on request. Call us at 931-243-6916 or email us at sales@raptorresins.com