RTV2 liquid silicone rubber for plaster concrete resin mold
RTV2 liquid silicone rubber for plaster concrete stone resin decorative mold making
1.Description of RTV2 liquid silicone rubber for plaster concrete stone resin decorative mold making
C820 Silicone rubber is condensation cure silicone rubber for mold making. The silicone rubber will be cured under room temperature, It’s two-components, the mixing ratio is 100:2 . Part A is a flowable liquid silicone , part B is the catalyst. It has an exceptional fluidity and good operability.
2.Characteristics of RTV2 liquid silicone rubber for plaster concrete stone resin decorative mold making
*An exceptional fluidity and good operability, easy to demold
*Good tensile strength and tear strength
*soft hardness
*copy detailed pattern
*good flexibility
*eco-friendly
*long shelf-time &lifetime
3.Application of RTV2 liquid silicone rubber for plaster concrete stone resin decorative mold making
C820 silicone rubber is perfect molding material., it is suitable to make mold for concrete stone, cement casting , gypsum decocations, plaster product, resin craft, soap,candle, bronze casting, wax, crystal, tyre mold ,shoe mold ,clay casting ,soap mold,ceramic casting ,etc..
C820 Silicone rubber is mainly suitable for small or middle sized product with delicate pattern by pouring operation.
4.Datesheet of RTV2 liquid silicone rubber for plaster concrete stone resin decorative mold making
| Item No. | Appearance | Hardness (shore A°) | Viscosity (CPS) | Tensile-strength( kgf /cm2 ) | Tear-strength (kgf /cm2 ) | Elongation-break(%) | Mixing ratio | operation time (25 ℃ ) | Curing time( 25 ℃) | shrinkage |
| C820 | White | 20±1 | 14000±2000 | ≥36 | ≥20 | ≥400 | 100:3 | 20-30 mins | 2~3 h | ≤0.3% |
5. Using instructions of RTV2 liquid silicone rubber for plaster concrete stone resin decorative mold making
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 cardpaper) 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 100:2 (silicone:catalyst=100:2) ,mix the silicone rubber and catalyst evenly.
*Notes: Molding silicon 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 silicon rubber will be partly solidified and this will bring troubles for your final operation. What’s more, the finished molds will have a short life. All of these will cause a waste of silicon 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 finished all the steped 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.
Attentions:
1. The curing speed of this product is closely related to the ambient temperature,high temperature fast curing, on the contrary, low temperature curing slow. Users can appropriately adjust the amount of curing agent to obtain the desired cure speed according to the ambient temperature level.
2. If the copying original models are ceramic, resin, ABS material, wood, metal and other materials, the original models surface need use a release agent or baking mold method then reperfusion mold for avoiding sticky mold phenomenon.
3. Two parts of this series of products should be stored separately sealed, placed in a cool place, avoid the sun and rain.
4. If viscosity is increased or it has precipitation in silicone at storage period, can be used after mixing evenly, its performance unchanged.
5. This product is non-dangerous goods, if skin contacts the curing agent, can be cleaned with the suitable detergent and water; if splashed into the eyes, immediately wash with clean water at least 15 minutes, and consult a doctor.
♦ Package
- Small size:5kg/jar,10kg/jar
- General size:20kg/pail,25kg/pail,200kg/pail
♦ Delivery Time
- Depends on the express you choose and the destination
- Via Express:General 3-7 business days worldwide
♦ Shipping Cost
- Based on the weight of the goods and the destination
♦ Tracking No.
- The tracking No. will be sent to you the next day after shipping
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