Plaster molding silicone for middle size products
The definition of RTV silicone for decorative plaster moulding
RTV silicone for decorative plaster moulding is room temperature vulcanized silicone rubber, which is a kind of liquid fluidity rubber. RTV silicone is different from natural rubber, for RTV silicone is an kind of artificial organic silicone rubber. RTV silicone rubber is a new materials which is applicable for many fields, such as moulding, printing pad, sealant. etc.
Other using area of RTV silicone for decorative plaster moulding
RTV silicone for moulding can also used in poly resin PU, gypsum, unsaturated resin, lighting and candles crafts molding, stationery gifts crafts industry, a large statue Buddha, relievo furniture, furniture decorative materials, statues Buddha, artifacts copied, building decoration materials, large-scale cement mold, artificial fossils Factory and so on.
The features of RTV silicone for decorative plaster moulding
RTV silicone for decorative plaster moulding is a kind elastic silicon rubber mold which features as below:
Resistance to deformation,
High-temperature resistance
Acid-alkali resistance
Expansion as well as high reproduction times,
Good tensile strength,
Strong Tear strength
Good elongation
Low shrinkage
Long shelf time which can reach at least 1 years
RTV silicone for RTV silicone for decorative plaster moulding operations
During operate the RTV silicone for decorative plaster moulding three impotant thing to pay attention:
1. Weigh theliquid silicone rubber and curing agent exatly.
2. Stir theliquid silcone rubber and curing agent evenly.
3. We shouldchoose the right hardness to making diffirent size of product mold.
FAQ of RTV silicone for decorative plaster moulding
Why is the RTV silicone for moulding oily?
The RTV silicone for moulding itself doesnt contain any oil, so it wont be oily. If the mold is oily, it may be because you add the compound silicone oil( the compound of silicon oil and white oil). The white oil is not silicon oil but a kind of petrochemicals.
| Model | 625# |
| Appearance | white |
| Mixing proportion of curing agent (%) | 4% |
| Operating time (mins 25 0C ) | 30~50 |
| Curing time(hours 25 0C) | 4-5 |
| Hardness (A°) | 24~26 |
| Density ( g/cm 3 ) | 1.08 |
| Viscosity (mPas -25 0C) | 20000-25000 |
| Tensile-strength(kgf /cm2 ) | 42~45 |
| Tear-strength (kgf /cm ) | ≥27 |
| Elongation-break(%) | ≥ 450 |
| Retractility(%) | ≤0.25 |