1.Good flowability and long working time 2. Medium hardness 3. High tear and tensile strength 4. Easy de-mould
APPLICATIONS
MC Silicone RTV2 series are suited for reproduction of cement molding, concrete stones, artificial stones, plaster molding, figures, art objects, decoration molding, GRC products, gypsum products, resin products, PU molds. Etc.
| P series good for pouring mold making | |||||||
| Base and Curing Agent Mixture(100:2 by weight) in 25 C(77F) testing | |||||||
| Characteristical before curing | Curing | ||||||
| P Item NO. | Part A | Part B | Part A+ Part B | Pot life at 250C | De-molding Time at 25°C | ||
| Appearance | Appearance | Ratio | Viscosity | mins | hours | ||
| RTV2015 | White/ Translucent | Clear | 100:2 | 20000 | 30 | 6 | |
| RTV2020 | White/ Translucent | Clear | 100:2 | 21000 | 30 | 6 | |
| RTV2025 | White/ Translucent | Clear | 100:2 | 22000 | 30 | 6 | |
| RTV2030 | White/ Translucent | Clear | 100:2 | 30000 | 30 | 6 | |
| RTV2040 | White/ Translucent | Clear | 100:2 | 30000 | 30 | 6 | |
| Characteristical after curing 24 hours | |||||||
| Hardness | Tear strength | Tensile Strength(Mpa) | Elongation break (%) | Linear Shrinkage | |||
| Shore A | (N/mm) | ||||||
| RTV2015 | 15±1 | 26±2 | 29±2 | 600 | ≤0.2% | ||
| RTV2020 | 20±1 | 28±2 | 30±2 | 550 | ≤0.2% | ||
| RTV2025 | 25±1 | 32±2 | 34±2 | 500 | ≤0.2% | ||
| RTV2030 | 30±1 | 34±2 | 36±2 | 450 | ≤0.2% | ||
| RTV2040 | 40±1 | 31±2 | 33±2 | 400 | ≤0.2% | ||
| B series with high viscosity good for brushing | |||||||
| Base and Curing Agent Mixture(100:2 by weight) in 25 C(77F) testing | |||||||
| Characteristical before curing | Curing | ||||||
| P Item NO. | Part A | Part B | Part A+ Part B | Pot life at 250C | De-molding Time | ||
| Appearance | Appearance | Ratio | Viscosity | at 250C | |||
| B230 | White | Clear | 100:2 | 40000 cps | 30 mins | 6 hours | |
| B225 | White | Clear | 100:2 | 35000 cps | 30 | 6 Hours | |
| mins | |||||||
| RTV2028 | White | Clear | 100:2 | 38000cps | 30 mins | 6 hours | |
| Characteristical after curing 24 hours | |||||||
| Hardness | Tear strength | Tensile Strength(Mpa) | Elongation break (%) | Linear Shrinkage | |||
| Shore A | (N/mm) | ||||||
| B230 | 30±1 | 46 | 45 | 380% | ≤0.2% | ||
| B225 | 25±1 | 45 | 47 | 380% | ≤0.2% | ||
| RTV2028 | 28±1 | 45--47 | 50 | 500% | ≤0.2% | ||
How to make the silicone mold?
The surface of the original should be clean and free of loose material. If your products with thin flower patterns, and especially with porous substrates, please use a suitable mold release agent such as soap water, detergent, Vaseline or petroleum jelly.
Mixing
Please weight 100 Part A base and 2 parts of CA30 Curing Agent in a clean container. Thoroughly stir Part A base silicone before use, as filler separation may occur upon prolonged storage. Mixing Part A and Part B evenly until the CA30 completely dispersed in the base. Hand or mechanical mixing can be used, but do not for an extended period of time or allow the temperature to exceed 35C (95F). Mix suitably small quantities to ensure thorough mixing of base and curing agent.
It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mix to completely expand and then collapse. After a further 1-2 mins under vacuum, the mix should be inspected and can be used if free of air bubbles. A volume increase of 3-5 times will occur on vacuum de-airing the mixture. So a suitably large container should be chosen.
Pouring the mixture and curing
Pour the mixed Part A base silicone and CA-30 curing agent as soon as possible onto the original, avoiding air entrapment. The catalyzed material will cure to a flexible rubber within 6 hours (or faster by different mixing ratio or room temperature),we advice you de-mold after 24 hours ,it is will improve the replicate times of silicone mold.
Packing
20kg/drum,25kg/drum or 200kg/drum of Part A base silicone
0.25kg/bottle,1kg/bottle and 10kg/bottle of Part B CA30 Curing Agent
Note:
RTV2015/RTV2040 is an industrial product and must not be used in food molding, dental human skin molding applications.
Certificate: SGS,RoHS,MSDS,REACH
The information above is just for reference, if you're interested or have any questions, please feel free to contact Nicole:
Tel: 86-15874272919
Web:www(dot)mcsilicone(dot)com
E-mail:nicole(at)mcsilicone(dot)com
Skype:nicoleszmc
MSN: nicoleszmc (at)hotmail(dot)com
Liquid rtv silicone rubber
