silicone rubber for mold making, RTV-2 liquid silicone rubber, RTV silicone rubber for molding

RTV-2 liquid  silicon rubber for  Molding 

Specifications of RTV-2 liquid  silicon rubber for  Molding :

RTV-2 liquid  silicon rubber for  Molding :

1. non deformation
2. low shrinkage
3. high tear strength
4. good tension

Appilication of  RTV-2 liquid  silicon rubber for  Molding :

RTV-2 liquid  silicon rubber for  Molding  is used for the mold making of poly resin crafts, PU crafts, PU resin crafts ,gypsum crafts ,unsaturated resin crafts, lighting and candles crafts ,plastic toy , stationery gifts crafts industry, a large statue Buddha, furniture, furniture decorative materials, statues Buddha, artifacts copied, building decoration materials, large-scale cement mold, artificial fossils Factory, Europe component factory, simulation landscapes, animals and plants sculpture, sandstone crafts and so on.

 RTV-2 liquid  silicon rubber for  Molding   features description

RTV-2 silicon rubber is white or red flowing liquid with general hardness of 22-50A°after curing. RTV-2 silicon rubber is a kind elastic silicon rubber mold which features with resistance to deformation, high-temperature, acid-alkali and expansion as well as high reproduction times, good tensile strength, tear strength and elongation.

Datesheet of    RTV-2 liquid  silicon rubber for  Molding  

 RTV-2 liquid  silicon rubber for  Molding   operations

If the customer wants to make large products and large size molds, the mold should be made of silicon rubber with high hardness. On the contrary, if the mold with fine and precision patterns, it should be made of silicon with low hardness. The amount of the curing agent depends on the actual requirements of the customer. If molds requiring fast drying and demold, more curing agent is needed; contrarily, if molds requiring slower drying and demold, less curing agent is needed.

(Note: our company does not recommend you to add silicone oil. If a special soft silicone mold or fine detailed and complex patterns products are required, 5%-10% silicone oil can be added to soften the mold for easy demold.)

Frequently asked questions of  RTV-2 liquid  silicon rubber for  Molding    

Why does the silicone rubber mold have few molding times?

The silicone rubber mold has few molding times is due to follwoing reasons: adding too much silicone oil which will destroy the molecular of silicone rubber; making the mold for small and fine detailed products with higher hardness silicone rubber which is easy to break; making the mold for large products with soft silicone rubber which will reduce the tensile and tear strength of the mold, and the mold will have deformation. Thus, we should take the proper silicone rubber to make the mold for suitable products. 

What should we do when the air bubbles appeared in the process of mold making ? 

To handle this situation depends on different cases. Under the condition of an available vacuum pumping machine, mix the silicon rubber and curing agent evenly and then take it to vacuum chamber to deair . If without a vacuum pumping machine, reduce the amount of the curing agent properly. For example, change the mixing ratio of the silicon rubber and the curing agent from former 4% to 1%-2%. In this way, the pre- crosslinking time of silicon rubber will slow down, so the air in the mold will be eliminated gradually to reduce the air bubbles.

 Picturers of  RTV-2 liquid  silicon rubber for  Molding