Application of liquid silicone rubber RTV
liquid silicone rubber RTV are used for mold duplication and delicate mold making for poli crafts,resin crafts lighting and candle crafts
Models of liquid silicone rubber RTV
Model: 638# silicone rubber RTV
Appearance: white
Viscosity (cs): 25000
Hardness (A): 20-22
Tensile strength(kgf/cm2 ) ≥35
Tear strength (kgf /cm):≥25
Elongation break(%):≥500
Retractility (%):≤0.2
Curing agent mixed rate (%):2-3
Operate time (min): 30
Curing time (hours): 2-4
Model: 728# silicone rubber RTV
Appearance: white
Viscosity (cs): 18000
Hardness (A): 25
Tensile strength(kgf/cm2 ) ≥35
Tear strength (kgf /cm):≥22
Elongation break(%):≥320
Retractility (%):≤0.2
Curing agent mixed rate (%):2-3
Operate time (min): 30
Curing time (hours): 2-4
Model: 788# silicone rubber RTV
Appearance: white
Viscosity (cs): 12000-15000
Hardness (A): 28-32
Tensile strength(kgf/cm2 ) ≥35
Tear strength (kgf /cm):≥20
Elongation break(%):≥470
Retractility (%):≤0.2
Curing agent mixed rate (%):2-3
Operate time (min): 30
Curing time (hours): 2-4
Features of liquid silicone rubber RTV for polyresin angel moulding:
A. a low cost way to make moulds
B. a mould is built using a layer process
C. more time and fairly lengthy process to make your mould
D. easy to use
E. amazing elongation to break
silicone rubber RTV instruction:
1. Component A is white flowing liquid and component B is the curing agent.
2. For example, take silicone rubber of 100g and add 2g curing agent for mixing evenly (silicone rubber and curing agent must be measured accurately).
3. After the silicone rubber and the curing agent are completely mixed, put the silicon into a vacuum machine for deairing to remove the bubbles.
4. After deaired, pouring the liquid silicone rubber into the product to be duplicated or into the mold frame. If you don't have vacuum machine, please add 1.2% or 1.5% curing agent so that the bubbles can bubble itself.
5. Since the less curing agent you add, the slower the mould will curdle, the bubbles will bubble out itself.
