Silicone for Concrete(gypsum,plaster)Mold Making

Silicone for Concrete(gypsum,plaster)Mold Making 

 1.Silicone for Concrete(gypsum,plaster)Mold Making usages

         RTV Silicone Rubber for plaster products molding  is primarily intended for mold making of gypsum, concrete, poly resin ,PU resin, unsaturated resin crafts, lighting and candles crafts , plastic toys , stationery gifts crafts industry, large statue, Buddha, relievo furniture, furniture decorative materials, statues Buddha, artifacts copied, building decoration materials, large-scale cement mold, artificial fossils Factory, European  buildings, simulation landscapes, animals and plants sculpture, sandstone crafts and so on.

2. Silicone for Concrete(gypsum,plaster)Mold Making   main features:

1.Good characteristics of easy-operation 

2. Light viscosity and good flowability

3. Low shrinkage

4. Excellent tensile and tear strength

5. Favorable hardness

6. High temperature resistance, acid and alkali-resistance and ageing resistance

7. High duplication times

3. Silicone for Concrete(gypsum,plaster)Mold Making  discription

     RTV Silicone Rubber for plaster products molding is a kind of flowable liquid silicone, the quality has nothing to do with the color. It consists of two components. Part A is a flowable liquid silicone rubber, part B is the curing agent. Firstly, after your previous work of dealing with the original model, take some liquid silicone rubber , add 2%-3% curing agent of the amount of silicon, and mix them evenly. Then after vacuum-pumping the mixture, you can pour it into the mold frame. The silicone mold will cured in 2-4 hours.

And more curing agent is needed; contrarily, if molds requiring slower drying and demould, less curing agent is needed.

Silicone for Concrete(gypsum,plaster)Mold Making ---frequently asked question:

  Why does the liquid silicone rubber mold have few molding times?
The silicone rubber castine stone molds 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. 

Why does the Silicone for Concrete(gypsum,plaster)Mold Making mold get burnt out?

This consequence happens only because you have left out the important notes when using unsaturated resin materials to produce your products. The unsaturated resin produces great heat when added the curing agent. So you must demould the product within 3 minutes to avoid this problem.