Silicone rubber for making GRC molds

Various Application of  silicone rubber for making grc molds  

A: Cultural relic duplication, architectural decoration, statues
B: Resin crafts
C: Lighting ornaments, candles
D: Plaster, Gypsum,Cement,Concrete decorations
F: Model design, product exploitation, etc.

Instruction of silicone rubber for making grc molds :

RTV2 Silicone rubber is a premium grade silicone mold-making material that cures at room temperature to from a tough flexible rubber in approximately 24 hours. It offers excellent detail reproduction with high tear strength for long lasting molds.  

Frequently asked questions of Silicone rubber for making GRC molds :

1. Why should the silicone mold be reused only for a few times?
It can be due to the following reasons:
a. Adding too much silicone oil in to silicon rubber. Silicon oil is an additive which destroies the molecular weight of silicone rubber and reduce the tension and tear strength.
b. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs and the silicon rubber with a low hardness to makes molds for large sized products with simple designs.

Features of silicone rubber for making grc molds:

(1)high tensile & tear strength
(2) Low linear shrinkage
(3)free Curing agent
(4)brushing & pouring
(5) high duplication times