Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Low mixed viscosity at processing temperature (60°C) leads to a fast and effective wetting of dry fabrics and nonwovens
- Glass transition temperatures up to 170°C are possible depending on curing conditions
Applications & Uses
- Markets
- Applications
- Composites Processing Methods
- Application
Biresin® CR170/CH170-3 is especially suited to injection processes due to its viscosity range and reactivity. The resin should be processed at elevated temperatures (60°C) and used in areas where high thermal performance is required, for example in the production of automotive parts.
- 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.
- Before demoulding precuring of at least 2 h at 60°C is recommended.
- 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 | — | — |
| Density at 25°C | 1.14 | g/ml | — |
| Viscosity at 25°C | ~13,000 | mPa.s | — |
| Potlife, 100 g / RT, approx. values | min. 90 | — | — |
| Mixed Viscosity at 25°C | 1250 | mPa.s | — |
| Mixed Viscosity at 50°C | 340 | mPa.s | — |
| Mixed Viscosity at 70°C | 120 | mPa.s | — |
| Mixed Viscosity at 90°C | 70 | mPa.s | — |
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® CR170 resin (A) is 24 month and of Biresin® CH170-3 hardener (B) 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 at 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.