| Customization: | Available |
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| Material: | Organic Silicone |
| Application: | Industrial, DIY Art |
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Highly Transparent Rapid Prototyping Urethane Casting Mold Making RTV-2 Silicone Rubber
Transparent casting silicone is an excellent used in rapid prototyping and batch manufacturing of parts at lower costs and speedier turnaround. It is a two component elastomer cross-linking at room temperature. The polymerization can be accelerated by heat.
The silicone components are delivered as liquids, which once mixed and cured transform into a transparent, plastic and resistant material. Polymerization occurs without formation of heat.
transparent casting Silicone also can be used for:
Rapid Prototyping Vacuum Casting Clear Liquid Silicone Technical Data Sheet
| Typical general characteristics |
Inspection Method |
Model code | |||
|
Product data (catalyzed A+B) |
OTT-K730 | OTT-G738 | OTT-J840 | OTT-J850 | |
| Hardness | Shore A | 30 | 38 | 40 | 50 |
| Mix ratio | A:B | 1:1/10:1 | 1:1/10:1 | ||
| Color | / | Clear | Translucent | ||
| Pot life | 25ºC(77F) | 20-40 mins | 120mins | 20-40 mins | |
| Curing time | 25ºC(77F) | 3-5 hours | 12 hours | 3-5 hours | |
| Viscosity | mPa.s | 15000 | 60000 | 8000 | 12000 |
| Tear strength | KN/m | / | / | 18 | 12 |
| Tensile strength | MPa | 5.0 | 5.0 | 7.8 | 7.0 |
| Elongation | % | 500 | 350 | 400 | 400 |
| Shrinkage | % | 0.1 | |||
Features:
1.Almost nil shrinkage
2.Good fluidity, operability and excellent operation
3.Good resistance to weather, temperature, aging, acid
4.Excellent tear strenght, comfortable duplcation times
5.High chemical resistance to aggressive components of some types of resins
6.Food grade silicone(environmental, odorless and nontoxic
7.High resistance to high temperature and aging(resist -60 to 200ºC)
How to make a vacuum mold?
1.Making the master pattern
Urethane casting process begins with using computer-aided design to precision CNC machine a master pattern and printing the master pattern in either 3D printing SLS or SLA to provide a precise part that meets the master pattern's specifications.
2.Creation of Silicone mold
Casting molds made from liquid silicone are poured into a vacuum encasing the master pattern. Once the mold cures and solidifies, it is "surgically" cut into distinct halves, and the master pattern is removed, leaving a hollow cavity in the precision of the master pattern.
3.Manufacturing Parts
The cavity created after liquid silicone mold cures is used for casting the end product. Polyurethane resins are mixed and left to preheat about 40°C before use. The resins are poured into the mold in the vacuum chamber. It is then left in the oven for about 1-5 hours (depending on the size of parts) to cure. Once cured, the resin part is removed from the silicone mold tool, leaving an accurate and consistent copy. Silicone molds can make about 20 to 25 pieces, after which they should be replaced.
4.Final Finishes
This is the final step in the urethane casting process. Once cured, created prototypes can be cleaned, painted, polished, and coated as directed by clients to be made ready for the target market. The finishing process continues until the project is completed. Premium Parts provide high-quality parts with finishing and treatment options after the production of your urethane casting parts.
1.high quality similar to global big brand
2.18 months shelf life
3.50-1000 duplication time decided by product sizes
4.silicone non toxic, environment friendly
5.fast delivery within 4-6 days
6.shipment by air or by sea is available
7.24h after sales service
8.professional R&D team
Guangzhou OTT New Materials Co., Ltd. is a leading professional manufacturer of RTV liquid silicone in China. We are a science and technology manufacturer, professionally focus on R&D for liquid RTV silicone, and provide a serial services of silicone such as molding, insoles, sexy dolls, electronics, relative silicone materials and latest developed products, etc.
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