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RTV-2 Silicone Rubber for Polyester Mold Making

China RTV-2 Silicone Rubber for Polyester Mold Making, Find details about China Silicone Rubber, Silicone from RTV-2 Silicone Rubber for Polyester Mold Making

Model NO.
MCSIL2015-2030 Silicone rubber
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
Elongation at Break
500%
Trademark
MC SILICONE
Transport Package
20kg/Drum, 25kg/Drum or 200kg/Drum
Specification
REACH, MSDS, SGS
Origin
Dongguan, China
HS Code
39100000
Model NO.
MCSIL2015-2030 Silicone rubber
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
Elongation at Break
500%
Trademark
MC SILICONE
Transport Package
20kg/Drum, 25kg/Drum or 200kg/Drum
Specification
REACH, MSDS, SGS
Origin
Dongguan, China
HS Code
39100000
Description of RTV-2 Silicone Rubber for PU Mold Making

MCSIL2015-2030 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 PU 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 PU Mold Making

MCSIL2015-2030 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 PU Mold Making
Base and Curing Agent Mixture in 25C (77F) testing

Item MCSIL-2025
Coloroff-white
Curing agentCA30
Mixing ratio100: 2
Mixed viscosity24000-25000 cps
Working time 30-40 mins
Curing time 4-6 Hours
Hardness23-25 Shore A
Tear Strength30 N/mm
Tensile Strength≥ 3.8 MPa
Shrinkage≤ 0.3%
Relative density 1.11-1.15g/cm3
Elongation at break500%

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 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

RTV2 silicone rubber is an industrial product and must not be used in food molding, dental human skin molding applications.

Need more information, please feel free to contact us .


 
ItemMCSIL-2025
Coloroff-white
Curing agentCA30
Mixing ratio100:2
Mixed viscosity24000-25000 cps
Working time 30-40 mins
Curing time 4-6  Hours
Hardness23-25 Shore A
Tear Strength30 N/mm
Tensile Strength≥3.8 Mpa
Shrinkage≤0.3%
Elongation at break500%
Relative density 1.11-1.15g/cm3

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