Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Reinforcement Form
- Reinforcement Material
- 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
• Peak Tg 138°C : 1 hour 120°C : DMA
• Controlled flow system
• Out life 60 days at 20°C
• 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
RP542-4 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 120°C at 1-2°C/minute and then dwell for 1 hour. Part should then be allowed to cool naturally before demoulding. Alternative cure temperatures are in testing.
Properties
- Physical Form
- Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Tensile Strength (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 1961 | MPa | ISO 527-4 |
| Tensile Modulus (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 125 | GPa | ISO 527-4 |
| Strain At Failure (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 1.55 | % | ISO 527-4 |
| Compressive Strength (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 1204 | MPa | ISO 14126 |
| Compressive Modulus (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 109 | GPa | ISO 14126 |
| Flexural Strength (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 1.3 | GPa | ISO 14125 |
| Flexural Modulus (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 97 | GPa | ISO 14125 |
| ILSS (Unidirectional Epoxy Prepreg 300g/m2 34-700 12K) | 82 | MPa | ISO 14130 |
| Interlaminar Shear Strength (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 61.6 | MPa | ISO 14130 (1997) |
| Flexural Strength (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 890 | MPa | ASTM D790-02 |
| Flexural Modulus (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 55.5 | GPa | ASTM D790-02 |
| Compressive Strength (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 538 | MPa | ISO 14126 |
| Compressive Modulus (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 55.6 | GPa | ISO 14126 |
| Tensile Strength (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 770 | MPa | ISO 527-4/3/2 |
| Tensile Modulus (Epoxy Prepreg 200gsm 2x2 Carbon Twill TR30S 12K) | 56.1 | GPa | ISO 527-4/3/2 |
Technical Details & Test Data
- Cure Cyle
Laminates with honeycomb core
Elevate temperatures at 2 - 5°C per minute up to 120°C. Hold the final temperature for 1 hour 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 120°C, hold for 1 hour then allow the component to cool naturally inside the oven/autoclave before demoulding.
Press molded monolythic laminates
RP-542-4 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
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.