Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Reinforcement Form
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Main Features
• Excellent surface finish
• Core bondable
• Standard Cure 80°C - 120°C
• Service Temperature up to 120°C
• Tg onset 117°C, Midpoint 126°C with post cure
• Controlled flow system
• Out life 40 days at room temperature
• Available on most of PRF’s reinforcement fabrics
Applications & Uses
- Applications
- Composites Processing Methods
- Applications
• Aerospace
• Automotive
• Motorsport Components
• Marine
• Defense- Processing Methods
• Vacuum bag
• Autoclave
• Press molding
• Tube rolling
• Pressure bag- Processing
RP542-1 prepreg resin system may be processed at room temperature using established prepreg molding techniques on properly prepared molds. The cure cycle depends on the construction of the component and processing method. If honeycomb core is used in the part, the temperature ramp should be increased at a slower rate to enable a controlled flow of the resin to form a filet between the core and skin. Recommended cure cycle is to ramp from ambient to 110°C at 1-2°C/minute and then dwell for 2 hours. Part should then be allowed to cool naturally before demoulding. Alternative cure temperatures and times are given in the table below:
Temperature Cure Time Tg (DSC - ASTM D7426-08)
°C Hours Initial cure (°C)*
80 12 97 90 6 102 100 4 111 110 2 120 120 1 120
Properties
- Physical Form
- Mechanical Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Thermogravimetry (DSC) | 125 | °C | — |
| Tensile Strength | 84 | MPa | ISO 527-2 |
| Tensile Modulus | 2.9 | GPa | ISO 527-2 |
| Poisson Ratio | 0.36 | — | ISO 527-2 |
| Flexural Strength | 127 | MPa | ISO 178 |
| Flexural Modulus | 3 | GPa | ISO 178 |
| Value | Units | Test Method / Conditions | |
| Cure Temperature | 80 –120 | °C | — |
Technical Details & Test Data
- Cure Cyle
Laminates with honeycomb core
Elevate temperatures at 2 - 5°C per minute up to 110°C. Hold the final temperature for 2 hours then allow the component to cool naturally inside the oven/autoclave before demoulding.
Vacuum bagged monolythic laminates
Elevate temperature at 3 - 5°C per minute up to 110°C, hold for 2 hours then allow the component to cool naturally inside the oven/autoclave before demoulding.
Press molded monolythic laminates
RP-542-1 system may be applied directly to hot press molds at temperatures up to 130°C. The cure time at the highest temperature will be approximately 45 minutes. The mold and component temperatures should be cooled to below 80°C before demouding. It is important, when manufacturing honeycomb sandwich panels without the use of adhesive films, to increase the resin content on the fabric plies being used as the first layers against the honeycomb. This ensures enough resin is available for the formation of the resin filet between the honeycomb and the skins.Post cure cycle
Temperature (°C) 120 Time (hours) 1 Tg (°C) 125 A post cure can be carried out if the maximum Tg is required. The recommended post cure cycle is to ramp the temperature to 120°C at 1-2°C/minute and hold for 1 hour. Tg after this time will be 120-125°C (measured by DSC).
Storage & Handling
- Storage
This product should be stored in refrigerated conditions.
Shelf life is 6 months at below -5°C or 12 months at below -18°C.