Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Product Highlights
- 4 hardeners (B) with just one mixing ratio by weight, give a wide range of processing times
- The reactivity can be adapted by mixing the hardeners
- Biresin® CR82 systems have optimized viscosity and thus good impregnation and non-draining properties.
- All systems are Germanischer Lloyd approved. Certifi cate No. WP 1620020 HH (attached)
- Glass transition temperatures up to 80°C can be achieved dependent on curing conditions
- Hardeners (B) Biresin® CH80-2 and CH80-6 are also available in blue
Applications & Uses
- Applications
- Composites End Use
- Composites Processing Methods
- Application
Biresin® CR82 is especially suitable for the hand lay-up process and can be used in many areas incuding marine and general industrial composite.
- Processing
- The material and processing temperatures should be from 18 to 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.
- To clean brushes or tools immediately Sika Reinigungsmittel 5 is recommended.
- Additional information is available in “Processing Instructions for Composite Resins”.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Mixing Ratio, parts by Weight | 100 | — | — |
| Viscosity at 25°C | ~1,600 | mPa.s | — |
| Density at 25°C | 1.11 | 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 specific postcure should be adapted to the required technical and economic requirements.
- With hardeners (B) Biresin® CH80-1 and CH80-2 demoulding after room temperature cure is possible.
- With hardeners (B) Biresin® CH80-6 and CH80-10 curing at 45°C before demoulding is required dependent on components.
Storage & Handling
- Storage
- Minimum shelf life of Biresin® CR82 resin (A) is 24 month and of Biresin® CH80-1, CH80-2, CH80-6 and CH80-10 hardener (B) is 12 months 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 at least 60°C.
- Containers must be closed tightly immediately after use. The residual material needs to be used up as soon as possible.