Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Opaque gray color
- Excellent coverage even with tight radius curved parts
- Co-curable with 121°C (250°F) or 177°C (350°F) prepregs
- Passes tape removal scribe test, initial and after 24 hours
- Excellent surfacing characteristics even under vacuum cure on thin-skin honeycomb laminates
Applications & Uses
- Markets
- Composites Processing Methods
- Recommended Applications
- Aerostructures
- Composite surfacing
- Vacuum or low pressure, or autoclave cure
- Solid laminate or honeycomb structure
Properties
- Typical Properties
- Thermal Properties
| Value | Units | Test Method / Conditions | |
| Density | 1.33 | g/cc | — |
| Gel Time at 121°C (250°F) | 6–15 | minute | — |
| Value | Units | Test Method / Conditions | |
| Dry Tg (by DMA) cured at 119°C (246°F) | 121 (250) | °C (°F) | — |
Technical Details & Test Data
- Lightning Strike Protection
Composite surfacing films are used to aid in the Applications of the relatively fragile copper, aluminum, and bronze foils. Foils are a common method that allow composites to achieve higher levels of surface conductivity for lightning strike protection. There are several weights of foils designed to meet Zone 1A-3 protection. Airplane lightning strike zones are defined by SAE Aerospace Recommended Practices (ARP) 5414. The most likely areas to be hit are nacelles, radomes, wing tips, elevators, vertical fins, and horizontal stablizers. Common lightning strike protection includes expanded foils, wire mesh, and embedded metallic wire.
Safety & Health
- Product Safety And Shelf Life
Product Safety:
Apply resin side of TC235SF-1 on tool side. Tool side should be treated prior to lay-up with a composite mold release. After cure, lightly sand (150 grit) or use a Scotch-Brite pad to remove residual release chemicals. Solvent wipe and then apply primer or paint coatings.
Shelf Life:
- Out Life: 30 days out life ≤ 21°C (70°F) and ≤ 60% RH
- Frozen Storage Life: 12 months at ≤-18°C (≤ 0°F)
Out life is the maximum time allowed at 21°C (70°F) or below and 60% or less RH before cure, after a single frozen storage cycle in the original unopened packaging at -18°C (0°F) or below for a period not exceeding the frozen storage life noted above.