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TECHNICAL DATA SHEET
SILICONE RTV- 828
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Base products |
RTV-828 |
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Applications |
The follow features make RTV-2 mold making rubber used for manufacturing the replications of decorations and crafts made by polyester,epoxy or PU foam resin. It also suitable for manufacturing artistic candles and gypsum, as well as molds for manufacturing furniture and electronic components |
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Characteristic |
Good flow and low viscosity Excellent thermal resistance Hight tear resistance |
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Color of base |
Pale white |
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Density( 25oC) |
1.12 |
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Viscosity( 25oC) |
55,000 ~ 65,000 CPS |
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Catalyst |
T-31 |
R-97 |
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Color of catalyst |
Colorless |
Colorless |
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Viscosity |
6 CPS |
6 CPS |
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Mixing ratio(wt=wt) |
1.5 ~ 2.0 % |
3.5 ~ 4.5% |
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Pot life |
10 ~ 20 minutes |
35 ~ 45 minutes |
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Tack free time |
1 hr 10 minutes |
2 hours |
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Demold time |
3 ~ 4 hours |
5 ~ 6 hours |
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Hardness |
15 ± 20A |
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Tensile Strength |
35 ± 2 kgf/cm2 |
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Elogation |
450 ± 100 % |
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Tear |
25 ± 2 kgf/cm |
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Linear Shrinkage |
0.2 % |
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Add silicone oil |
0 ~ 20 % |
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OPERATION PROPRESS.
Choose containers with a volume of more than 3-4 times the volume of silicone needed.
Clean the surface of the container, weighing silicone oil, silicone and suitable catalyst.
Mix the silicone 1 ~ 2 minutes speed 100 ~ 200 rpm.
Mix Silicone and silicone oil together 1 ~ 2 minutes speed 100 ~ 200 rpm.
Adding catalyst into the mixture (silicone and silicone oil) mix speed at 100 ~ 200 rpm from 1 ~ 2 minutes
Vacuum-mixed (silicone oil, silicone and catalyst) for 2 minutes.
Then the mixture is poured into molds to let it flow naturally.
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