FM® 490B
FM® 490B is a modified epoxy core splice foam that may be cured at temperatures ranging from 225°F to 350°F (107°C to 177°C) by either free foaming or restrained foaming processes. This product is designed to minimize variation in cell structure induced by typical process variables such as heat-up rates and vacuum conditions. The core splice foam contains no metallic fillers, making it appropriate for applications requiring radar transparency. FM® 490B offers advantages over FM® 490A via improved expansion performance.
Typical applications of FM® 490B include honeycomb splicing, boding of inserts or edge members to core, and localized reinforcement of honeycomb core where increase shear strength is required.
Features and Benefits ·
FM® 490B is a modified epoxy core splice foam that may be cured at temperatures ranging from 225°F to 350°F (107°C to 177°C) by either free foaming or restrained foaming processes. This product is designed to minimize variation in cell structure induced by typical process variables such as heat-up rates and vacuum conditions. The core splice foam contains no metallic fillers, making it appropriate for applications requiring radar transparency. FM® 490B offers advantages over FM® 490A via improved expansion performance.
Typical applications of FM® 490B include honeycomb splicing, boding of inserts or edge members to core, and localized reinforcement of honeycomb core where increase shear strength is required.
Features and Benefits ·
- Uniform cell structure; resistant to fluid ingression ·
- Radar transparent ·
- Non-asbestos, no metallic fillers ·
- Designed for honeycomb splicing, localized reinforcement, bonding of edge members and inserts ·
- Wide curing temperature window: 225°F to 350°F (107°C to 177°C) ·
- Service temperature range from -67°F to 350°F (-55°C to 177°C) ·
- Achieves uniform expansion independent of heat-up rate 1°F – 10°F (0.6 – 5.5°C)/minute
Product variants
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Markets
| Segments | Applications | End uses |
|---|---|---|
| Defense | Next-generation aircraft | |
| Fixed Wing Aircraft | Structures | Wings and Empennages |
| Fixed Wing Aircraft | Structures | Fuselages |
| Advanced Air Mobility | Air Taxis / Heavy Goods Cargos | Structures |
Processing Method
- Autoclave
Chemical categories
| Chemical category | Chemical family | Chemical product |
|---|---|---|
| Composite materials | Thermoset composite | Epoxy |
Product Functions
- Medium Service Temperature (70°C to 150°C)
Format
| Physical form |
|---|
|
Adhesives
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Region of availability
- Africa & Middle East
- Asia Pacific
- Europe
- Latin America
- Not available in North America