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RTV-2 Silicone Rubber for Polyester Mold Making

RTV-2 Silicone Rubber for Polyester Mold Making

Place of Origin : China
Brand Name : MC silicone
Model Number : RTV2025
Certification : REACH
Price : 6.5USD/KG
Packaging Details : 25KG/Pail
Delivery Time : 2-5 working days after payment
Payment Terms : TT% in advance
Supply Ability : 8000KG/DAY
MOQ : 100KG
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Description of RTV-2 Silicone Rubber for Polyester Mold Making

MC RTV2015-2030 mold making silicone rubber is a two-component material, this kind of silicone rubber consists of Part A base silicone and Part B CA30 curing agent, and Part A base silicone and Part B curing agent can cure at room temperature by a condensation reaction. These materials can be cast into the cured silicone molds: Plaster polyurethane, PU, GRC, cement, resin, polyester, wax etc...
Features of RTV-2 Silicone Rubber for Polyester Mold Making

1. Good flowability 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
Applications of RTV-2 Silicone Rubber for Polyester Mold Making

RTV2015-2030 silicone rubber is suited for reproduction of middle size cement molds, concrete stones, artificial stones, plaster molds, figures, art objects, decoration molds, GRC products, gypsum products, resin products, PU molds. etc...
Technical datasheet of RTV-2 Silicone Rubber for Polyester Mold Making

Base and Curing Agent Mixture in 25C (77F) testing
Item : RTV 2025
Color : off-white
Curing agent : CA30
Mixing ratio : 100: 2
Mixed viscosity : 24000-25000 cps
Working time : 30-40 mins
Curing time : 4-6 Hours
Hardness : 23-25 Shore A
Tear Strength : 30 N/mm
Tensile Strength : ≥ 3.8 Mpa
Shrinkage : ≤ 0.3%
Relative density : 1.11-1.15g/cm3
Elongation at break : 500%
How to make the silicone mold?
1. Preparing
The surface of the original objects should be clean and free of loose material. If your products have thin flower patterns, and especially have porous substrates, please use a suitable mold release agent such as soap water, detergent, Vaseline or petroleum jelly.
2. Mixing
Please weigh Part A silicone base and part B CA30 Curing Agent with ratio of 100: 2 into a clean container. Stir Part A base silicone thoroughly before use, then Mix Part A and Part B evenly until the curing agent completely dispersed in the silicone base. Manual or mechanical mixture can be used, but do not last much time or allow the temperature to exceed 35C (95F). It's suitable to mix small quantities to ensure thorough mixture of silicone base and curing agent.
Note: It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mixture to completely expand and then collapse. After a further 1 to 2 minutes under vacuum, the mixture 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.
3. Pouring the mixture and curing
Pour the mixed Part A base silicone and CA-30 curing agent as soon as possible onto the original object, 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 of RTV-2 Silicone Rubber for PU Mold Making
Part A base silicone: 20kg/drum, 25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 0.25kg/bottle, 1kg/bottle and 10kg/bottle
Storage of RTV-2 Silicone Rubber for PU Mold Making
When the silicone rubber is stored at or below 30 C (85F) in the original unopened containers, SILASTIC RTV2030 Base and CA30 Curing agent have a usable life of 9 months from the date of production.
Note of RTV-2 Silicone Rubber for PU Mold Making
SILASTIC RTV2015-2030 silicone rubber is an industrial product and must not be used in food molding, dental human skin molding applications.

Product Tags:

RTV-2 Mold Making Silicone


Mold Making Silicone


Silicone for PU Castings

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