Duplicating Silicones
Rhein A B Silicone
Type:
Addition-curing 1 : 1 duplicating silicone DIN EN ISO 14356, Type 2 – irreversible duplicating material
Technical Data:
| Composition | Organosilicone |
| Mixing ratio A (white) : B (pink) | 1:1 |
| Mixing under vacuum | 40 seconds |
| Working time at 23 °C | > 5 min. |
| Curing time at 23 °C | 30-45 min. |
| Tensile strength | approx. 2.2 MPa |
| Elongation at break | approx. 310 % |
| Tear strength | > 6.5 N/mm |
| Shore A hardness after 60 minutes: | 24 |
Application:
Rhein A B Silicone is suitable for the flaskless duplicating system. Models to be duplicated should be at room temperature and should not be soaked. Duplicating tape is placed round the model and a suitable stabilizing plate selected. The retention holes in the plate should almost cover the dental arch and should not come into contact at all with the duplicating tape.
The stabilizing plate is secured in the fixation device. Mix Rhein A B Silicone under vacuum and pour it from a height of approx. 40 cm onto the center of the model. Do not pour directly onto the contours of the model. Pour until the top of the model is completely covered. Set the model under the fixation device, place the stabilizing plate in position and secure it approx. 5 mm above the dental arch.
The fixation device should not be moved again until the silicone is cured. After approx. 30 minutes remove the model from the duplicating mold using compressed air and remove any feather edges with scissors.
Chemical characterization:
Polymerized dimethyl polysiloxane filler mixture.
Dangerous reactions:
No known dangerous reactions, if stored and used properly.
Toxicity:
None known
Directions:
Store containers tightly sealed in a well-ventilated place. Keep containers dry. Keep away from water, alkalis, strong acids and oxidizing agents.
Ecological information:
Present experience suggests that there is no detrimental effect on the environment, if it is used properly and current regulations are observed. It is non-biodegradable and insoluble in water when cured. It can be easily separated from water by filtering.
Please note:
Cured silicone is not harmful to the environment and can be disposed of along with domestic waste, as long as this does not contravene local bye-laws.
Technical recommendations are based on tests and findings from work in our development laboratory and can only be regarded as guidelines. Rhein Feigen products are subjected to strict quality controls. We reserve the right to make technical changes.
Incompatible materials:
The following materials can produce a negative reaction with addition-curing silicones: soft polyvinyl chloride, polysulphide MIL-S-8516, Mystik® 6207 adhesive tape, Mystik® 6215 adhesive tape, Scotch® cellophane strips, Scotch® 360 adhesive tape, Permacel® masking tape, Pliobond® adhesive, Neoprene rubber, Buna N rubber, Vitron®A rubber, colophony-based soldering flux, acid-based soldering flux, disinfectant, ISOLIT, cyanoacrylate glue, amino-hardened epoxy, Humiseal® 6215 adhesive tape, vinyl insulating tape, latex vacuum hoses, GRS rubber, natural gum, certain types of silicone and RTV rubber, SUPER-SEP, milling oils, sulphur compounds such as thiols, sulphides, sulphates, sulphites, thiourea and nitrogen compounds such as amines, amides, imides, acids.
If there is any doubt, we recommend testing the material before use.