Жидкий RTV2 резиновый силикон для изготовления

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Liquid RTV2 Rubber Silicone for Artificial Rocks Mold Making

 

1. Application of liquid rtv2 rubber silicone for mold making
Besides to make artificial rocks moulds, this kind of liquid rtv2 silicone can also used to make molds of
1. Resin crafts, unsaturated resin crafts
2. Poly resin crafts, candle crafts, plastic crafts
3. Making molds forgypsum, GRC, artificial stone products, wax casting
4. Decoration building, furnitures
5. Lighting & candles crafts, stationery gifts, crafts industry
6. Casting for Statue, Buddha, Christmas ornaments, sculptures, figures, etc

2. Advantages of liquid rtv2 rubber silicone for artificial rocks mold making
1. Two part of liquid fluid: liquid white silicone and curing agent
2. Cure at room-temperature
3. Good fluidity and excellent operation
4. Good resistance to weather, temperature, aging, acid
5. Excellent tear strength, comfortable duplication times
 silicone rtv liquid mold rubber casting material
3. Data sheet of liquid rtv2 rubber silicone for artificial rocks mold making

Model NO·	XB-730	XB-735
Mixing Ratio (by weight)	100:3	100:3
Appearance/Color	Translucent/White	Translucent/White
Hardness (Shore A)	30±2	35±2
Mixed viscosity(mPa·s)	20000±500	20000±500
Working Time(at 23℃/75℉, MINS)	30~40	30~40
Curing Time(at 23℃/75℉, HRS)	3~5	3~5
Tensile strength, Mpa	≥4.0	≥4.0
Tear strength, KN/m	≥25.2	≥19.5
Shrinkage, %	<0.2	<0.2
Elongation at break,%	≥480	≥480

 

4. Using instructions of rtv2 silicone rubber for making mould
Step 1: Prepare and clean the prototype.
You must make sure your original molds perfect, fix the original mold on a board, then using some assistant material (like cardboard) to make a frame for to surround the prototype. The frame is no need, if we make the mold by brushing way.

Step 2: Take the silicone and catalyst as the ratio 100:3 by weight, mix the silicone rubber and catalyst evenly. silicone rtv liquid mold rubber casting material

Notes: rtv silicone rubber is a kind of flowing liquid and it contains two parts. Part A is a kind of flowing liquid and part B is the curing agent. Remember to mix part A and part B evenly, otherwise the silicone rubber will be partly solidified and this will bring troubles for your final operation. What's more, the finishes molds will have a short life. All of these will cause a waste of silicone rubber.

Step 3: Vacuum pumping.
After mixed the silicone evenly, it is better to release the bubble by vacuum pumping.

Step 4: Pouring cast or brushing cast.
After released the bubble, we can pour/brush the silicone rubber on the prototype.

Notes: Please finishes all the steps within the operation time. If not, it will cause cross linking reaction, and no more further steps will be available. So, we have to pay attention to the pot life and curing time.

 

  silicone rtv liquid mold rubber casting material