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Dongguan Mingcheng Electronic Technology Limited
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Description of silicone mold making
RTV2 Silicone Rubber is a kind of two-component material. The silicone rubber is made up of Part A base silicone and Part B curing agent. The Part A base silicone and Part B CA curing agent can cure at room temperature by a condensation reaction, after full cure, it become a cured silicone mold. The silicone mold can be cast the following materials for reproduction: plaster, polyurethane, PU, GRC, cement, resin, polyester, wax etc...
Characteristics of silicone mold making
1. Good flow ability and long working time
2. Medium hardness
3. High tear and tensile strength
4. Easy de-mould from complex replica parts
5. Acid and alkali-resistance
6. Low linear shrinkage
Technical parameter of silicone mold making
P Item NO. | Characteristics before curing | Curing | ||||||
Part A | Part B | Part A+ Part B | Pot life at 250C mins | De-molding Time at 250C | ||||
Appearance
| Ratio | Viscosity (after mixed) cps | ||||||
B225 | Liquid white | Liquid clear | 100:2 | 30000-32000 | 30-40 | 4-6 H | ||
| B230 | Liquid white | Liquid clear | 100:2 |
31000-32000
| 30-40 | 4-6 H | ||
| Characteristics after curing 24 hours | |||||||
Hardness Shore A | Tear strength (N/mm) | Tensile Strength(Mpa) | Elongation break (%) | Linear Shrinkage | ||||
B225 | 18-20 | 28 | ≥3.8 | 550 | 0.3 % | |||
B230 | 23-25 | 32 |
≥3.8
| 500 | 0.3% | |||
Applications of silicone mold making
RTV2 Silicone rubber 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.
Storage of silicone mold making
When the RTV2 Silicone Rubber is stored at or below 30 C (85F) in the original unopened containers, Silicone Base and CA30 Curing agent have a usable life of 12 months from the date of production.
The information above is just for reference, if you're interesting or have any questions, please don't hesitate to contact Berry:
Web:www.mcsilicone.com
E-mail: berry(at)mcsilicone(dot)com
Skype:berryszmc
MSN: berryszmc(at)hotmail(dot)com