RTV liquid condensation silicone rubber for artificial stone 

RTV silicone could be mainly used for making concrete stones, precision molds, PU molds, resin molds, gypsum casting, candle molding,for life casting, fabric finishing, seal for electronic components and solar circuit board, trademark decoration. etc.

Descriptions of  RTV liquid condensation silicone rubber for artificial stone rocky mould making

Silicone is generally named two-components silicone rubber, Part A and part B. It features an exceptional fluidity and good operability. The mixing ratio is 1:1,mainly be suitable for making molds application.

OPERRATING INSTRUCTION  :

1. Stir part A and part B with right mixing ratio (1:1) evenly. And get the mixture for vacuum-pumping. (If there is no vacuumizer, you can just pour the mixture slowly from the corner so that less bubbles caused)

2. Enclose the product (the original model) with four plastic plates or wooden plates.

3. Clean your products and brush a layer of release agent(detergent or soap water) on your product.

4. Pour the mixture with correct mixing ratio into the model frame.

After about 2-4 hours, when the silicone cured, get out the original model, and there you get a finished addition cured silicone mold .

SHELF LIFE:

 Twelve (12) months from date of shipment when stored at 24°C in original unopened packages.

Datasheet:

Operation instructions
Step 1: prepare the original molds
Make sure your original molds perfect. fix it on a board. And fix the original mold on a board , then used four piece of board to enclose the original molds .

Step 2: Take 100 G parts A and add 3G parts B and mix them evenly. 
*Notes: Mold making silicon rubber is a kind of flowing liquid ,it contains two parts. Part A is a kind of flowing white liquid and part B is the curing agent or catalyst .Pls follow the step strictly:
         1.Weigh the two part exactly by electronic weight.. 
If not , for example add two much catalyst , the operation time will be too fast to operate ,which will cause inconvinience to operate . 
         2.Mix part A and part B evenly. 
Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What's more, the finished molds will meet a short life. All of these will cause a waste of silicon rubber.
Step 3: Vacuum pumping
Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available. 

Step 4: Pouring casting or Brush operation
*Notes:1. For simple pattern products we suggest use pouring operation way , which will be very easy to operate and demould. Pourable silicone require light viscosity which will be easy to flow smoothly and easy to de-air . 
        2.For delicate pattern products we suggest use brushing operation way , which can copy the pattern exactly . Brushable silicone require high viscosity which won't be easy to flow away and easy to brush .  
        3. We sugges to set the silicone mold for another 12 hours after demould before put into large production .

Shelf life

1. Twelve(12) months when stored under dry and cool place by original package under 25ºC

Package
25KG/drum vacuum packing for part A +1kg/ bottle catalyst for part B 
200KG/drum packing for part A +1kg/ bottle catalyst for part B 

More information , pls feel free to contact Ms Lisa: