SikaBiresin® CR83
(formerly Biresin® CR83)
Composite resin system for vacuum infusion process with Tg up to 84 °C
SikaBiresin® CR83 is an epoxy resin system suitable for the production of high performance fiber reinforced composite parts and molds with thermal properties up to 84 °C by vacuum infusion process.
- Very fast infusion of fabrics and non-wovens
- Wide range of processing times
- DNV GL approved. Certificate No. TAK000019Z
- Resin component (A) has a low tendency to crystallize
PRODUCT BENEFITS
- Very fast infusion of fabrics and non-wovens
- Wide range of processing times
- DNV GL approved. Certificate No. TAK000019Z
- Resin component (A) has a low tendency to crystallize
Areas of Application
SikaBiresin® CR83 is especially suited to infusion and injection processes. With its very low viscosity it is designed for large parts that require a fast infusion. For example in marine or wind applications. 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.Packaging
SikaBiresin® CR83 (A)
| Pail | 10 kg |
| Drum | 200 kg |
| IBC | 1000 kg |
SikaBiresin® CH83-2 (B)
| Can | 3 kg |
| Hobbock | 20 kg |
| Drum | 180 kg |
| IBC | 900 kg |
SikaBiresin® CH83-6 (B)
| Can | 3 kg |
| Hobbock | 20 kg |
| Drum | 180 kg |
| IBC | 900 kg |
SikaBiresin® CH83-10 (B)
| Can | 3 kg |
| Hobbock | 20 kg |
| Drum | 180 kg |
| IBC | 850 kg |
Product Details
| Properties |
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| Chemical base |
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| Color |
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| Mixing ratio | by weight by volume |
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| Density | liquid cured |
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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 by DSC (CQP301-5 / ISO 11357) |
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| Heat deflection temperature (CQP030-1 / ISO 75A) |
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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® CR83 are shown in the diagrams below.
Diagram 1: Reactivity at 23 °C in a 100 ml insulated cup
Diagram 2: Viscosity development
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.
Parts produced with SikaBiresin® CR83 must undergo a pre-curing of at least 4 hours at 40 °C before removing from the mold.
Containers must be closed tightly immediately after each use to prevent moisture ingress.
Removal
Uncured SikaBiresin® CR83 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.