Platinum cure molding rubber silicone rtv is used for prototyping and the reproduction of parts. Silicone moulds can be constructed in many different forms depending on the shape of the part you are making. In this section we will outline how to create the easiest one part flat back mould.
Why platinum cure molding rubber silicone rtv
Silicone is the first choice of material when casting 3 dimentional shapes that contain undercuts as it exhibits excellent release properties, a high level of surface detail, very good chemical and high temperature resistance.
It comes in a two-component system (base + catalyst) available in a hardness range of very soft to medium. It is available for making moulds that are poured, brushed or sprayed
Features of platinum cure molding rubber silicone rtv
1. Good characteristics of easy-operation
2. Light viscosity and good flowability
3. Low shrinkage
4. Favorable tension
5. No deformation
6. Favorable hardness
7. High temperature resistance, acid and alkali-resistance and ageing resistance
8. Food grade, non-toxic
Datasheet of platinum cure molding rubber silicone rtv
|
Model |
Color |
Mixing ratio |
Pot life (mins) |
Demouled time (hrs) |
Hardness(A0) |
Tensile-strength (kgf/cm2) |
Tear-strength (kgf/cm) |
Viscosity (cps) |
Elongation (%) |
|
RTV E625 |
translucent |
1 : 1 |
30-60 |
4±1 |
25±2 |
35±2 |
25±2 |
6000±3000 |
≥400 |
|
RTV E630 |
translucent |
1 : 1 |
30-60 |
4±1 |
30±2 |
40±2 |
23±2 |
7000±3000 |
≥395 |
|
RTV E635 |
translucent |
1 : 1 |
30-60 |
4±1 |
35±2 |
47±2 |
22±2 |
8000±3000 |
≥470 |
Operation of platinum cure molding rubber silicone rtv
RTV625 is suitable for making moulds for small size products by pouring method;
RTV630 is suitable for making moulds for small or medium size products by pouring and brushing method;
RTV638 is suitable for making moulds for large size products by brushing method.
Please do not hesitate to ask if you have any questions
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