SikaBiresin® CR122
(formerly Biresin® CR122)
Composite resin system for hand lay-up process with Tg up to 145 °C
SikaBiresin® CR122 is an epoxy resin system suitable for the production of high performance fiber reinforced composite parts and molds with thermal properties up to 145 °C by hand lay-up process.
- LBA approval (German Aeronautics Federal Office) for gliders and power gliders with SikaBiresin® CH122-3, -5 and -9
- DNV GL approved with SikaBiresin® CH122-3 and -5. Certificate No. TAK00001YB
- Excellent impregnation and good non-draining properties
- Wide range of processing times
- With SikaBiresin® CH122-1, -3 and -5 demolding after room temperature cure possible
PRODUCT BENEFITS
- LBA approval (German Aeronautics Federal Office) for gliders and power gliders with SikaBiresin® CH122-3, -5 and -9
- DNV GL approved with SikaBiresin® CH122-3 and -5. Certificate No. TAK00001YB
- Excellent impregnation and good non-draining properties
- Wide range of processing times
- With SikaBiresin® CH122-1, -3 and -5 demolding after room temperature cure possible
Areas of Application
SikaBiresin® CR122 is especially suited for the hand lay-up process due to the optimized viscosity. It can be used for the production of general industrial composite parts as well as composite tools with the demand for an increased temperature resistance. This product is suitable for experienced professional users only. Tests under actual processing conditions and with additional materials such as fibers and release agents must be performed to proof material compatibility.Product Details
| Properties |
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| Chemical base |
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| Color |
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| Density | liquid cured |
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| Mixing ratio | by weight by volume |
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| Viscosity (CQP029-4) |
mixed |
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| Pot life (CQP021-3 / Gel Timer TECAM) |
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| Curing conditions | 8 hours |
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| Tensile strength (CQP036-2 / ISO 527) |
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| Tensile modulus (CQP036-2 / ISO 527) |
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| Tensile elongation (CQP036-2 / ISO 527) |
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| Flexural strength (CQP027-2 / ISO 178) |
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| Flexural modulus (CQP027-2 / ISO 178) |
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| Compressive strength (CQP028-5 / ISO 604) |
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| Shore D hardness (CQP023-1 / ISO 868) |
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| Impact resistance (CQP038-2 / ISO 179) |
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| Glass transition temperature (CQP301-5 / ISO 11357) |
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| Heat deflection temperature (CQP030-1 / ISO 75B) |
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| Shelf life |
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| CQP = Corporate Quality Procedure |
Application
Application
The resin system is optimized for processing temperatures between 18 °C – 25 °C. Consider the change in processing parameters if the resin system is processed at different temperatures. The curing must be performed at temperature ≥ 18 °C.
Information regarding reactivity and viscosity development of different combinations of SikaBiresin® CR122 are shown in the diagrams below.
Diagram 1: Reactivity at 23 °C in a 100 ml insulated cup
Diagram 2: Viscosity development at 25 °C
Prior to application, check both components for crystallization. The crystallization process can be reversed by heating the product to 60 °C – 70 °C until the crystals are no longer visible.
Containers must be closed tightly immediately after each use to prevent moisture ingress.
Removal
Uncured SikaBiresin® CR122 can be removed from tools and equipment with Sika® Reinigungsmittel 5 or another suitable solvent. Once cured, the material can only be removed mechanically. Hands and exposed skin shall be washed immediately using industrial hand cleaner and water.
Do not use solvents on skin.
STORAGE CONDITIONS
All components must be stored between 15 °C – 30 °C.
Prior to use check the material for homogeneity and crystallization and make sure to temper it to processing temperature.