Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Biresin® CR172 has an optimized viscosity designed for with good impregnation and non-draining properties.
- The system can be used in hand lay-up and injection
- Glass transition temperatures up to 175°C can be achieved depending on curing conditions
Applications & Uses
- Markets
- Composites End Use
- Composites Processing Methods
- Application
Biresin® CR172 can be used in many areas incuding high temperature composite mouldmaking and in general industrial composites.
- 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 | — | — |
| Density at 25°C | 1.16 | g/ml | — |
| Viscosity at 25°C | ~ 6,000 | 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
10 kg
Storage & Handling
- Storage
- Minimum shelf life of Biresin® CR172 resin (A) is 24 months and of Biresin® CH170-3 hardener (B) and Biresin® CH172-6 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 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.