RTV Silicone Raw Material for Mold Making

Advantages of RTV silicone raw material for mold making

A. Shore A from 15 to 40 hardness

B. Good fluidity and good operability and good for pouring method.

C. Excellent mechanical properties, in particular tear strength and tensile strength.

D. Excellent flexibility and it is easy to demould.

E. High temperature resistance, high duplication times and repeated use.

F. There are a range of catalysts/curing agent/hardener allows the Liquid rtv silicone rubber to fulfill requirements for various applications and various requirements on the operation time and curing time.

Why RTV-2 Molding Silicone Rubber?
Economic Use
As the most stable polymer available, silicones offer superior reliability, excellent service life and reduced production costs.
Versatile Application
Silicone rubbers cure in deep sections as needed for electrical potting and encapsulating, casting rubber parts, arts restoration, general handy crafts, lost wax casting process, plaster forms, seals, stage decorations, statuettes and many more.
Chemical Resistance
Silicones resist acids, bases, solvents, chemicals, oils and water.

How to making silicone rubber molds with rtv silicone rubber ?

a.deal with the orignal sculpture 

b.sprayed on release agent 

c.weigh correct molding silicone rubber according to the instruction 

d.stir two part molding silicone compound evenly 

e.vacuum pumping about 5 min 

f.poured on or brushed on the orignal sculpture

g.curing 2-4 hours 

h.demould and apply to casting

 About the shrinkage, Leah have some other suggestion on how to reduce it for you.

1) control the addition of catalyst. Usually, more catalyst would be added if you want to cured fast, but still we can adjust the working time and the curing time as you require.

2) do not remould so fast, and pls let the silicone mold cured completely, which would take about 24 hours, then remould.

3) when you produce the products, pls put the mold flatly, then pour the plater or other materials into it smoothly. When you do not usually the mold, you should store it flatly, not fold it,and you also can pour the plaster into it and not remould the fisinished plaster products, leaving it in the mold to keep the mold in original shape.

Any questions about Silicone Rubber, Leah is at your service.

TEL: 086-755-89212382

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