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Identification & Functionality
- Chemical Family
- Technologies
Features & Benefits
- Labeling Claims
- Materials Features
- Properties
RECKLI PUR-Elastomer A_x001d_45 is a solvent-free, rubbery-elastic, liquid, twocomponent polyurethane, cold-curing, almost shrinkage-free, after curing sliceable and grindable. It shows high chemical resistance against aqueous alkali, especially concrete.
Applications & Uses
- Markets
- Compatible Polymers & Resins
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Applications
RECKLI PUR-Elastomer A_x001d_45 is used for manufacturing flexible models, fittings, formliners and molds ensuring exact reproduction of surface contours and textures even in cases of undercuts or higher structure depth. Easy stripping of castings is enabled by using suitable RECKLI release agents. RECKLI PUR-Elastomer A_x001d_45 is particularly suitable for making durable formliners for the manufacture of structured exposed concrete.
- Processing
Each contact with moisture must strictly be avoided. Before processing, the base component has to be stirred up thoroughly. Add the hardener (B) to the base
component (A) and mix them homogenously. Transfer the mixture into a second receptacle and stir it up again. Thereby the incorporation of larger amounts of air should be avoided. Once mixed the processing of the material must be completed within the pot life (15 - 20 minutes). The shortest demoulding time is 24 hours.
Properties
- Color
- Typical Properties
Value | Units | Test Method / Conditions | |
Hardener | For PUR-Elastomer A45, A60,SR 30 | — | — |
Hardener | For PUR-Elastomer A45, A60,SR 30 | , SR | — |
Mixing ratio (base : hardener) | 9:1 | — | (according to weight) |
Workable temperature | -15 | °C | — |
Viscosity of base component | 2500 | mPa.s | ISO 2555 |
Pot life (200-g mixture at +21°C) | 15-20 | minutes | — |
Earliest demoulding (at +21°C): | 24 | hours | — |
Full chemical and mechanical loading after: | 7 - 10 | days | — |
Density | 1.3 | g/cm³ | — |
Hardness | 45 | Shore A | DIN 53505 |
Tensile Strength | 3.1 | N/mm² | DIN 53504 - 52 |
Elongation at Break | 650 | % | DIN 53504 - 52 |
Tear Resistance | 11 | N/mm | ASTM D 624-B |
Heat Resistance (Dry Heat) | 65 | °C | — |
Heat Resistance (Under Concrete) | 60 | °C | — |
Linear Shrinkage | 0.1- 0.2 | % | — |
Technical Details & Test Data
- Surface Preparation
- The model surface must be dry and clean. Absorbing surfaces should be sealed to facilitate the subsequent demoulding and to avoid inaccurate curing. For this, RECKLI PUR-Sealant can be used if the surface is solvent-resistant. Otherwise, especially if the surface has to be recovered in the original state, RECKLI Si- Stripping Lacquer can be applied and removed with water along with all residues after completing the molding works. Afterwards, 2– 3 layers of RECKLI Mold Wax are applied. Each layer has to dry completely.
- When applying several layers of elastomer, the preceding layer should be still slightly sticky but sufficiently cured to bear the load of the following application. If the surface is completely cured, it must be roughened by grinding before further material can be applied.
Safety & Health
- Safety
- Protect skin and eyes from material splashes. Provide sufficient ventilation in the working place. Please consult the relevant safety data sheet and attend to the indications on the label of the package regarding the Dangerous Goods Regulation.
- RECKLI PUR-Elastomer A_x001d_45 exclusively consists of components that are registered according to regulation 1907/2006_x001e_/EU (REACH) or exempt from registration. It is free from contents according appendix XIV (SVHC) and mercury compounds.
- This pamphlet is intended solely as an application directive. It does not claim to be binding and valid for all modes of application. A preliminary test under operation conditions is highly recommended.
- This pamphlet replaces all previously published pamphlets concerning RECKLI PUR-Elastomer A_x001d_45, stating them as no longer being valid.
Packaging & Availability
- Packaging Sizes
- Double drums: 20 kg | 10 kg;
- Double cans:1 kg.
- The hardener is enclosed in the lid.
Storage & Handling
- Storage
Store in a dry place at room temperature. RECKLI PUR-Elastomer A_x001d_40 amp; is storable for _x001e_6 months from delivery when kept in the closed original packaging at about 18°C. Opened drums must be closed airtight right after use.