Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Product Highlights
- Fast infusion and good wet-out of fabrics and non-wovens due to low viscosity and good wetting characteristics
- All systems Germanischer Lloyd approved. Certifi cate No. WP 1620034 HH (attached)
- Glass transition temperatures of up to 120°C depending on curing conditions
- 2 hardeners (B) give a range of processing times
- Uniform mixing ratio of 100:30 gives processing fl exibility
- The reactivity can be adapted by mixing the hardeners
Applications & Uses
- Markets
- Composites End Use
- Composites Processing Methods
- Application
Biresin® CR120 is especially suited to the infusion and injection processes due to its low viscosity range. It can be used in the production of general industrial composites as well as in the production of composite tooling by infusion where higher temperature performance is needed.
- Processing
- The material and processing temperatures should be in the range 18 - 35°C.
- The mixing ratio must be followed accurately to obtain best results. Deviating from the correct mix ratio will lead to lower performance.
- The fi nal mechanical and thermal values are dependent on the applied postcuring cycles.
- It is recommended to clean brushes or tools immediately after use with Sika Reinigungsmittel 5.
- Additional information is available in “Processing Instructions for Composite Resins”.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Mixing Ratio, parts by Weight | 100 | — | — |
| Mixing Ratio, parts by Volume | 100 | — | — |
| Viscosity at 25°C | ~900 | mPa.s | — |
| Density at 25°C | 1.13 | g/ml | — |
Technical Details & Test Data
- Postcuring
The suitable cure cycle and the attainable mechanical and thermal values depend on various factors, such as laminate thickness, fi bre volume, reactivity of the resin system etc.
An appropriate cure cycle could look as follows:- Heat-up rate of ca. 0.2°C/Minute until approx. 10°C below the required glass transition temperature (Tg)
- Followed by a dwell at that temperature of between 2 and 12 hours.
- Part(s) should then be cooled at ~0.5°C per minute
The specifi c postcure should be adapted to the required technical and economic requirements. To measure the mechanical performance of the resin system a SikaAxson standard cycle is used to ensure that the full Tg potential of the system in question is reached.
Packaging & Availability
- Packaging
1000. net weight, 10 (kg)
Storage & Handling
- Storage
- Minimum shelf life of Biresin® CR120 resin (A) is 24 month and of hardeners (B) Biresin® CH120-3 and CH120-6 is 12 month under room conditions (18 - 25°C), when stored in original unopened containers.
- After prolonged storage at low temperature, crystallization of resin (A) may occur. This is easily removed by warming up for a suffi cient time to a minimum of 60°C.
- Containers must be closed tightly immediately after use. The residual material needs to be used up as soon as possible.